Jurnal Sains Teknologi Lingkungan最新文献

{"title":"Sintesis, Karakterisasi, dan Uji Adsorpsi Komposit Silika/Karbon dari Limbah Sekam Padi sebagai Adsorben Tembaga (II)","authors":"Haryono, A. R. Noviyanti, Engela Evy Ernawati","doi":"10.55981/jtl.2023.241","DOIUrl":"https://doi.org/10.55981/jtl.2023.241","url":null,"abstract":"Copper ion as one of the pollutants in industrial wastewater can be treated by the adsorption method. One type of adsorbent can be prepared from rice husk. Rice husk as agricultural waste contains carbon and silica which can act as metal adsorbents. The purpose of this study was to synthesize and characterize silica/carbon composites, as well as test their adsorption as adsorbent on copper (II) ion adsorption by determining the optimum composition of silica/carbon, adsorption capacity, and model of isotherm adsorption. The research method consisted of gasification of rice husks, extraction of silica from rice husk charcoal with potassium carbonate as solvent, manufacture of silica/carbon composites, and adsorption tests. The results showed that the mass ratio of silica to carbon of 2:1 was the optimum composition in the synthesis of silica/carbon composites as adsorbent for the adsorption of copper (II) ion. The silica/carbon composite adsorbent in this composition had the highest adsorption capacity for copper (II) ion and surface area is 75.88 mg/g and 233.45 m2/g, respectively. The optimum adsorption time was obtained for 40 minutes and the model of adsorption isotherm in the form of Freundlich adsorption with R2 = 0.9582.\u0000 \u0000Abstrak\u0000Ion tembaga sebagai salah satu polutan dalam air limbah industri dapat ditangani dengan metode adsorpsi. Salah satu jenis adsorben dapat disiapkan dari sekam padi. Sekam padi sebagai limbah pertanian mengandung karbon dan silika yang dapat berperan sebagai adsorben logam. Tujuan dari penelitian ini adalah melakukan sintesis dan karakterisasi komposit silika/karbon, serta uji adsorpsinya sebagai adsorben pada adsorpsi ion tembaga (II) melalui penentuan komposisi optimum dari silika/karbon, kapasitas adsorpsi, dan model adsorpsi isoterm. Metode penelitian terdiri dari gasifikasi sekam padi, ekstraksi silika dari arang sekam padi dengan pelarut kalium karbonat, pembuatan komposit silika/karbon, dan uji adsorpsi. Hasil penelitian menunjukkan bahwa rasio massa silika terhadap karbon sebesar 2:1 merupakan komposisi optimum pada sintesis komposit silika/karbon sebagai adsorben untuk adsorpsi ion tembaga (II). Adsorben komposit silika/karbon pada komposisi tersebut memiliki kapasitas adsorpsi terhadap ion tembaga (II) dan luas permukaan paling tinggi yaitu berturut-turut sebesar 75,88 mg/g dan 233,45 m2/g. Waktu optimum adsorpsi diperoleh selama 40 menit dan dengan model adsorpsi isoterm berupa adsorpsi Freundlich dengan nilai R2 = 0,9582.","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"99 1-4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83361836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identifikasi Potensi Asap Akibat Kebakaran Hutan terhadap Rencana Pembangunan Tapak PLTN Kabupaten Bengkayang","authors":"Dian Rahayu Jati, Y. Fitrianingsih, Kiki Prio Utomo, Ai Sulastri","doi":"10.55981/jtl.2023.245","DOIUrl":"https://doi.org/10.55981/jtl.2023.245","url":null,"abstract":"Land and forest fires in West Kalimantan have been going on for a long time and in recent years it has gotten  worse with the increasing number of hotspots which has reduced visibility due to haze. This decrease in visibility reaches a considerable distance from the source of the forest fire. This condition has an impact on health problems, transportation, and population density. Bengkayang Regency was chosen as the location for the prototype site for the West Kalimantan nuclear power plant prototype which is planned to be built in 2024. The location that has been determined is Gosong Beach, Sungai Raya Islands District, with coordinates 108o 051'30” W – 108o 05' 23'' East and 00o 43 ' 50'' N – 00o 41' 15” South. This study aims to predict the distribution of PM10 due to forest fires at prospective site locations within a radius of 25 km based on hotspot point data during 2010–2020 using The American Meteorology Society Environmental Protection Agency Regulatory Model (AERMOD) method. The results showed that the number of hotspots around the location was 2,873 points in a period of 10 years. Four locations experience repeated events throughout the year within a radius of 25 km with the closest point as far as 5.34 km from the site location. Based on AERMOD modeling using 2020 meteorological data, the fastest possible distribution directly from the 4 points follows the south to west direction and does not go to the site location, but the closest distance to the site is 3.08 km.ABSTRAK\u0000Kebakaran lahan maupun hutan di Kalimantan Barat telah terjadi sejak lama dan beberapa tahun terakhir semakin parah dengan meningkatnya jumlah titik hotspot yang berdampak pada turunnya jarak pandang akibat kabut asap. Penurunan jarak pandang ini sampai pada jarak yang cukup jauh dari sumber terjadinya kebakaran hutan. Kondisi ini berdampak pada masalah kesehatan, transportasi, dan mobilitas penduduk. Kabupaten Bengkayang dipilih sebagai lokasi calon tapak prototipe Pembangkit Listrik Tenaga Nuklir (PLTN) Kalimantan Barat yang rencananya akan dibangun pada tahun 2024. Lokasi yang telah ditentukan adalah Pantai Gosong Kecamatan Sungai Raya Kepulauan, dengan koordinat 108o 051’30” BB – 108o 05’ 23’’ BT dan 00o 43’ 50’’ LU – 00 41’ 15”LS. Penelitian ini bertujuan untuk memprediksi sebaran PM10 akibat kebakaran hutan pada calon lokasi tapak pada radius 25 km berdasarkan data titik hotspot sepanjang tahun 2010-2020 dengan menggunakan metode The American Meteorology Society Environmental Protection Agency Regulatory Model (AERMOD). Hasil penelitian menunjukkan jumlah titik hotspot yang terdapat pada sekitar lokasi sebanyak 2.873 titik dalam kurun sepuluh tahun. Terdapat 4 lokasi yang mengalami kejadian yang berulang sepanjang tahun dalam radius 25 km dengan titik terdekat sejauh 5,34 km dari lokasi tapak. Berdasarkan pemodelan AERMOD yang menggunakan data meteorologi tahun 2020, arah sebaran asap dari 4 titik tersebut mengikuti arah Selatan menuju Barat dan tidak menuju lo","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75264583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Uji Kinerja Insinerator dan Alat Pengendali Pencemaran Udara untuk Meminimalkan Dampak Limbah B3","authors":"Ninin Gusdini, Nadya Mediana, Ratih Pratiwi","doi":"10.55981/jtl.2023.248","DOIUrl":"https://doi.org/10.55981/jtl.2023.248","url":null,"abstract":"The purpose of this study was to analyze the performance of the incinerator based on indicators: combustion efficiency, gas residence time, destruction level, hazardous waste removal, and quality of air emissions. The measured emission parameters were particulates, CO and CO2, heavy metals, opacity, SO2, NO2, HF, HCl, and total hydrocarbon. The method used was a field experiment, which was a direct test of the incinerator's combustion process, observing the process that occurs and calculating the parameters that are indicators of the incinerator’s performance. The results showed that the combustion efficiency at 80% (500 kg/hour) feeding load was 99.9999% and 100% (700kg/hour) was 99.9997%. The average residence time for 80% feeding load is 6.05 seconds and for 100% is 6.42 seconds. The destruction and removal efficiency at 80 and 100%  feeding loads was 99.9998%. The emission quality as measured by the particulate parameters, gas composition, heavy metals (As, Cd, Cr, Pb, Hg, Tl) and opacity from the incinerator stack all meet the quality standard of Minister of Environment and Forestry Regulation No 6/2021. Based on the test results, it is shown that the incinerator has good performance when using 100% feeding load.\u0000Abstrak\u0000Tujuan penelitian ini adalah menganalisis kinerja insinerator yang digunakan berdasarkan indikator: tingkat efisiensi pembakaran, waktu tinggal gas, tingkat penghancuran dan penghilangan limbah B3 (Bahan Berbahaya dan Beracun), serta mengukur kualitas emisi udara. Emisi yang diukur meliputi partikulat, gas CO dan CO2, logam berat, opasitas, SO2, NO2, HF, HCl dan total hidrokarbon. Metode yang digunakan adalah eksperimen lapangan, yaitu melakukan uji coba langsung pada proses pembakaran di insinerator dan mengamati proses yang terjadi dan menghitung parameter-parameter yang menjadi indikator kinerja insinerator. Hasil uji lapangan diperoleh bahwa efisiensi pembakaran pada beban pengumpanan 80% (500 kg/jam) adalah 99,9999% dan 100% (700 kg/jam) adalah 99,9997%. Rerata waktu tinggal untuk beban pengumpanan 80% adalah 6,05 detik dan 100% adalah 6,42 detik. Efisiensi penghancuran dan penghilangan pada beban pengumpanan 80 dan 100% adalah 99,9998%. Kualitas emisi yang diukur dari parameter partikulat, komposisi gas, logam berat (As, Cd, Cr, Pb, Hg, Tl) dan opasitas dari cerobong insinerator semuanya memenuhi baku mutu Peraturan Menteri Lingkungan Hidup dan Kehutanan No. 6 Tahun 2021. Hasil uji tersebut menunjukkan bahwa proses pengolahan limbah B3 pada insinerator yang digunakan memiliki kinerja  yang baik pada saat penggunaan beban pengumpanan 100%.","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82503152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pemilihan Lokasi TPA Limbah Padat Menggunakan Metode Analisis Keputusan Multi Kriteria Berbasis Sistem Informasi Geografis: Sebuah Usul Modifikasi SNI 03-3241-1994","authors":"Darman Ferianto Saragih","doi":"10.55981/jtl.2023.237","DOIUrl":"https://doi.org/10.55981/jtl.2023.237","url":null,"abstract":"The selection of the landfill location in Indonesia is regulated in SNI 03-3241-1994, where three stages are set in succession, namely regional, elimination, and determination. The first two stages are considered relatively long and less flexible, where the first stage produces a binary location suitability map, which only shows two types of areas, namely feasible and not feasible. This article aims to create and propose a more practical and flexible alternative landfill site selection model as a modification of the SNI model and create a continuous location suitability map based on the proposed model. The first objective is achieved by integrating the stages of the SNI model in an alternative model, called the SNI-A model, using a multi-criteria decision analysis method based on geographic information systems (GIS-MCDA). The SNI-A model was applied to a case study to achieve the second objective with six main analytical steps, namely determining criteria/factors, collecting data/maps, standardizing maps, creating factor maps, weighting factors, and combining factor maps. Sixteen factors that were determined from the literature study were involved in this GIS-MCDA model. Data processing and analysis was completed using IDRISI-Selva software version 17, where the final result was a location suitability map. The suitability map obtained has four levels of suitability, namely low, medium, high and very high, where the area with a very high level of suitability reaches 59,596.740 ha or 6.585% of the total area reviewed. The results of this study can be used as input for decision makers in terms of site selection, especially the location of urban solid waste landfill.\u0000ABSTRAK\u0000Penentuan lokasi TPA di Indonesia diatur dalam SNI 03-3241-1994 yang menetapkan tiga tahapan secara berurutan, yaitu regional, penyisih, dan penetapan. Kedua tahapan yang pertama dianggap relatif panjang dan kurang fleksibel, khususnya karena tahapan pertama tersebut menghasilkan sebuah peta kesesuaian lokasi yang bersifat biner, yang hanya menunjukkan dua jenis area yaitu layak dan tidak layak. Artikel ini bertujuan untuk membuat sekaligus mengusulkan model pemilihan lokasi TPA alternatif yang lebih praktis dan fleksibel sebagai modifikasi model SNI tersebut dan membuat peta kesesuaian lokasi yang bersifat kontinu berdasarkan model yang diusulkan tersebut. Tujuan pertama dicapai dengan mengintegrasikan tahapan model SNI dalam sebuah model alternatif, yang disebut model SNI-A menggunakan metode analisis keputusan multikriteria berbasis sistem informasi geografis (AKMK-SIG). Model SNI-A diaplikasikan pada sebuah studi kasus untuk mencapai tujuan kedua dengan enam langkah analisis utama yaitu penentuan kriteria/faktor, pengumpulan data/peta, standardisasi peta, pembuatan peta faktor, pembobotan faktor, dan kombinasi peta faktor. Enam belas faktor yang ditentukan berdasarkan studi literatur dilibatkan dalam model AKMK-SIG ini. Pengolahan dan analisis data diselesaikan menggunakan pe","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89232382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pengaruh Suhu dan Waktu Pengukusan pada Sludge IPAL Industri Makanan sebagai Alternatif Pakan Maggot","authors":"Arifudin, R. N. Sopiah, T. Suryati, Setiyono, S. Herlina, H. Ambarsari, S. Suyanti, Atang, Sabudin","doi":"10.55981/jtl.2023.240","DOIUrl":"https://doi.org/10.55981/jtl.2023.240","url":null,"abstract":"Food industry sludge waste from the coagulation-flocculation process has a fairly high nutrient content so that it has the potential as an alternative source for BSF (black soldier fly) maggot feed. On the other hand, this sludge has a very strong odor as a result of the decomposition process of organic sludge by anaerobic bacteria during the waiting period for the pickup process by trucks. The purpose of this study was to determine the effect of temperature and steaming time on the odor and protein content of cake sludge used for BSF maggot feed. To eliminate odors before being used as maggot feed, treatment is carried out first, namely by steaming with temperature variations of 85, 100, and 121 ºC; and variations in steaming time of 10 minutes, 15 minutes and 20 minutes. Each treatment was repeated three times. The main responses observed were the parameters of protein content and odor. Based on the results of odor measurements on samples of cake sludge that have been steamed with temperature treatment and steaming time in general, it can reduce the odor value and protein content of cake sludge. The lowest odor value was obtained at the increased temperature of 121 ºC with a steaming time of 15 minutes, while the highest odor value occurred at a temperature treatment of 85 ºC and a steaming time of 10 minutes.\u0000 \u0000Abstrak\u0000Limbah sludge industri makanan dari proses koagulasi-flokulasi memiliki kandungan nutrisi yang cukup tinggi sehingga berpotensi sebagai sumber alternatif untuk pakan maggot BSF (black soldier fly). Di sisi lain, sludge ini memiliki bau yang sangat menyengat sebagai akibat proses dekomposisi bahan organik sludge oleh bakteri anaerobik selama masa tunggu proses pengambilan oleh truk. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh suhu dan lama pengukusan terhadap bau dan kandungan protein cake sludge yang digunakan untuk pakan maggot BSF. Untuk menghilangkan bau sebelum digunakan sebagai pakan maggot, maka dilakukan perlakuan terlebih dahulu yaitu dengan melakukan pengukusan pada variasi suhu 85, 100, dan 121 ºC; dan variasi waktu lama pengukusan 10 menit, 15 menit dan 20 menit. Setiap perlakuan diulang sebanyak tiga kali. Respon utama yang diamati adalah parameter kadar protein dan bau. Berdasarkan hasil pengukuran, bau pada contoh cake sludge yang telah dikukus dengan perlakuan suhu dan lama pengukusan secara umum dapat menurunkan nilai bau dan kadar protein dari cake sludge. Nilai bau terendah diperoleh pada perlakuan penambahan suhu 121 ºC dengan lama pengukusan 15 menit, Sedangkan nilai bau tertinggi terjadi pada perlakuan suhu pada suhu 85 ºC dan lama pengukusan selama 10 menit.","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"132 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79055910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Penentuan Status Mutu Air dan Status Trofik di Perairan Danau Maninjau","authors":"Astried Sunaryani","doi":"10.55981/jtl.2023.246","DOIUrl":"https://doi.org/10.55981/jtl.2023.246","url":null,"abstract":"Lake Maninjau has been establihed as one of the National Priority Lakes that is used for hydroelectric powerplant, tourism, fisheries and aquaculture. The rapid increase of floating net fishery (FNF) - aquaculture hassome negative impacts on the pollutant loads. In order to preserve the Lake Maninjau ecosystem, continuousmonitoring of water quality is required. This study aims to determine the water quality status andtrophicclassification of Lake Maninjau using the STORET method and trophic classification based on the Regulationof The Minister of Environmental Number 28 of 2009. The results show that over the last ten years (2011–2020), the water quality status of Lake Maninjau were increasingly polluted until it was classed as heavilypolluted, especially in areas with FNF activities. Additionally, the trophic classifications of lake maninjauareeuthropic to hypereutrophic at several FNF locations. Information on the water quality status andtrophicclassification is expected to be taken into consideration in making decisions regarding the management of theLake Maninjau ecosystem.ABSTRAK\u0000Danau Maninjau sebagai salah satu Danau Prioritas Nasional berfungsi sebagai pembangkit tenagalistrik, pariwisata, perikanan tangkap, dan perikanan budidaya. Peningkatan aktivitas kerambajaring apung (KJA) yang intensif memberikan dampak buruk terhadap beban pencemar di perairandanau. Sebagai upaya untuk melestarikan ekosistem Danau Maninjau, diperlukan pemantauankualitas air yang dilakukan secara kontinu. Penelitian ini bertujuan untuk menentukan status mutuair dan status trofik di perairan Danau Maninjau dengan menggunakan metode STORETdanklasifikasi status trofik berdasarkan Peraturan Menteri Negara Lingkungan Hidup Nomor 28Tahun2009. Dari hasil penelitian kualitas air selama sepuluh tahun terakhir (2011–2020), terlihat bahwastatus mutu air Danau Maninjau semakin tercemar hingga kelas cemar berat khususnya di areadengan aktivitas KJA. Demikian pula untuk status trofik Danau Maninjau yang berada padakondisi eutrofik hingga hipereutrofik pada beberapa lokasi KJA. Informasi status mutu air dan status trofikini diharapkan dapat dijadikan bahan pertimbangan dalam pengambilan keputusanterkaitpengelolaan ekosistem Danau Maninjau.","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"148 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89425429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Control of Indoor Pollution in The Bedroom of Tuberculosis Patients Using Cl2","authors":"Sri Puji Ganefati, Sarjito Eko Windarso, Agus Kharmayana Rubaya, Herman Santjoko, Sri Muryani","doi":"10.55981/jtl.2023.235","DOIUrl":"https://doi.org/10.55981/jtl.2023.235","url":null,"abstract":"Tuberkulosis (TB) adalah penyakit yang disebabkan oleh Mycobacterium tuberculosis yang ditularkan melalui udara pernapasan. Sumber penularan TBC adalah melalui penderita TBC BTA positif saat batuk atau bersin, menyebarkan kuman ke udara berupa percikan dahak dalam waktu yang lama di udara. Air garam merupakan bahan yang digunakan untuk pengawetan (anti/membunuh kuman). Bahan aktif dalam garam berfungsi sebagai anti bakteri berupa unsur klorin (Cl), karena bersifat diatomik. Proses pelepasan unsur Cl dari molekul garam meja NaCl, kemudian Cl dengan ikatan Cl lainnya membentuk gas Cl2 dengan metode elektrolisis air garam. Fungsi reaksi elektrolisis air garam merusak ikatan NaCl sehingga logam natrium (Na) dan gas klorin (Cl2) menyebar ke udara. Penelitian ini dilakukan di rumah pasien TB yang menjadi obyek penelitian di Wilayah Kerja Puskesmas Gamping II Kabupaten Sleman Yogyakarta. Penelitian ini menghasilkan waktu paparan optimal 15 menit menghasilkan gas Cl2 sebesar 0,2067 ppm dan waktu kontak optimal 15 menit dengan penurunan jumlah kuman 56,22%.\u0000 \u0000Abstract\u0000Tuberculosis (TB) is a disease caused by Mycobacterium tuberculosis which is transmitted through respiratory air. The source of TB transmission is through smear-positive TB patients when coughing or sneezing, spreading germs into the air in the form of phlegm splashes for a long time in the air. Saltwater is an ingredient used for preservation (anti/kills germs). The active ingredient in salt functions as an anti-bacterial in the form of elemental chlorine (Cl), because it is diatomic. The process of releasing Cl elements from NaCl table salt molecules, then Cl with other Cl bonds to form Cl2 gas by the salt water electrolysis method. The brine electrolysis reaction function damage the NaCl bond to metallic sodium (Na) and chlorine gas (Cl2) spread into the air. This research was conducted at the home of TB patients as the object of research in the Gamping II Health Center Work Area, Sleman Regency, Yogyakarta. This study resulted in an optimal exposure time of 15 minutes producing Cl2 gas of 0.2067 ppm and an optimal contact time of 15 minutes with a reduction in the number of germs of 56.22%.","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85181230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pra-Studi Analisis Paparan Konsentrasi PM2,5 dan CO2 di dalam Rumah","authors":"I. Chandra, Sherly Liana Putri, R. Salam, Lulu Millatina Rachmawati, N. A. Hasmul, Muhammad Fajri Hadi Syahputra","doi":"10.55981/jtl.2023.236","DOIUrl":"https://doi.org/10.55981/jtl.2023.236","url":null,"abstract":"In this COVID-19 pandemic period, the majority of people do their activities indoors. A high number of activities could increase indoor pollution. Some of the pollutants easily found in the house include particulate matter with sizes of <2.5 micrometers (PM2.5) and carbon dioxide (CO2). Both types of these pollutants can enter the body and interfere with health. This study aims to measure the concentration of pollutants in the house and estimate daily exposure and risk level. This study measured the concentration of PM2.5 and CO2 in two houses, house A located in a housing complex in Bandung Regency, and house B, located on the side of Garut City main road. The measuring instruments are placed in 3 points: kitchen, family room, and outdoors. The concentration of PM2.5 in the neighborhood of house A is higher than the concentration of PM2.5 in the neighborhood of house B due to the high construction activity. Large ventilation in house A causes the PM2.5 concentration to follow the outdoor concentration pattern. As for house B, the concentration of PM2.5 is much influenced by the source from the kitchen. The activities much influence the concentration of CO2 for both houses in each room. The relative risk of PM2.5 for cardiovascular and cardiopulmonary disease in each house differed depending on the duration of exposure. Calculation of the relative risk of PM2.5 was conducted on normal people in house A and house B, and the chef in house B. The highest relative risk was obtained by the chef in house B, followed by normal people in house B and house A. The level of relative risk for the chef at house B is 30% for cardiovascular disease and 34% for cardiopulmonary disease.\u0000ABSTRAK\u0000Di masa pandemi COVID-19, mayoritas masyarakat melakukan kegiatannya di dalam rumah. Aktivitas yang tinggi dapat menyebabkan polutan dalam rumah meningkat. Beberapa jenis polutan dapat dengan mudah ditemukan di dalam rumah di antaranya adalah partikulat berukuran <2,5 mikrometer (PM2,5) dan karbon dioksida (CO2). Kedua jenis polutan tersebut dapat masuk ke dalam tubuh dan mengganggu kesehatan. Penelitian ini bertujuan untuk mengukur konsentrasi polutan dalam rumah dan mengestimasi paparan harian dan tingkat risikonya. Penelitian ini mengukur konsentrasi PM2,5 dan CO2 di dua tipe rumah, yaitu rumah A yang terletak di perumahan Kota Bandung, dan rumah B, terletak di samping jalan utama kota Garut. Alat ukur diletakan pada tiga ruangan, yaitu dapur, ruang keluarga, dan luar ruang. Lingkungan rumah A memiliki konsentrasi polutan PM2,5 yang lebih tinggi dari rumah B karena tingginya aktivitas pembangunan permukiman dan jalur kereta cepat. Ventilasi yang besar pada rumah A menyebabkan konsentrasi PM2,5 cenderung mengikuti pola luar ruang. Sementara itu untuk rumah B, tingginya aktivitas di dapur mempengaruhi konsentrasi polutan PM2,5 dalam rumah. Konsentrasi CO2 untuk kedua rumah pun berbeda untuk tiap ruang. Rata-rata sumber CO2 pada tiap ruang di masing-masing dipengaruhi oleh","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"292 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83437862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pemanfaatan Limbah Sedotan Plastik sebagai Media Lekat dalam Proses Anammox","authors":"Zulkarnaini, Annisa Aulia Rasyidah, Ridwan","doi":"10.55981/jtl.2023.239","DOIUrl":"https://doi.org/10.55981/jtl.2023.239","url":null,"abstract":"Anaerobic ammonium oxidation (anammox) bacteria tend to settle in the reactor due to self-granulation capability. Carrier is used to enhancing nitrogen removal by anammox biofilm. This study analyzed nitrogen removal using plastic straws as carriers and compared nitrogen removal at different heights of the reactor. The study was conducted using an up-flow anaerobic sludge blanket (UASB) reactor with a volume of 300 mL with three sampling points of 8, 16, and 24 cm and operated for 72 days continuously. The artificial wastewater containing 70 mg-N/L ammonium and nitrite was continuously delivered into the reactor with a hydraulic retention time (HRT) of 6 hours and 3 hours. Cultivated anammox bacteria from Lake Koto Baru, Indonesia, was inoculated into the reactor to start the experiment. The nitrogen removal performance was calculated based on the influent and effluent concentrations of ammonium, nitrate, and nitrite. The nitrogen removal performance achieved a nitrogen removal rate (NRR) of 0.96 kg-N/m3·d, nitrogen removal efficiency (NRE) of 74.62%, and ammonium conversion efficiency (ACE) of 87%. This study shows that nitrogen removal can be optimized by using plastic straws as the carrier. The nitrogen removal mainly occurred in the bottom of the reactor where the average nitrogen removal at 1/3, 2/3, and top of reactor height was 60, 30, and 10%, respectively.\u0000 \u0000Abstrak\u0000Bakteri anaerobic ammonium oxidation (anammox) cenderung mengendap di dasar reaktor karena kemampuannya untuk membentuk granular. Media lekat sering digunakan untuk meningkatkan penyisihan nitrogen berupa biofilm anammox. Penelitian ini bertujuan untuk menganalisis penyisihan nitrogen menggunakan sedotan plastik sebagai media lekat dan membandingkan penyisihan nitrogen pada ketinggian reaktor. Penelitian dilakukan menggunakan reaktor up-flow anaerobic sludge blanket (UASB) bervolume 300 mL dengan 3 titik sampling yaitu pada ketinggian 8, 16, dan 24 cm yang dioperasikan selama 72 hari. Bakteri anammox yang telah dikultivasi dari Telaga Koto Baru, Kabupaten Tanah Datar, Sumatra Barat, diinokulasikan ke dalam reaktor untuk memulai percobaan. Air limbah artifisial yang mengandung 70 mg-N/L amonium dan nitrit dialirkan ke dalam reaktor secara kontinu dengan hydraulic retention time (HRT) 6 jam dan 3 jam. Kinerja penyisihan nitrogen dihitung berdasarkan konsentrasi amonium, nitrit dan nitrat. Penyisihan nitrogen maksimal mencapai nitrogen removal rate (NRR) 0,96 kg-N/m3.h, nitrogen removal efficiency (NRE) 74,62%, dan ammonium conversion efficiency (ACE) 87%. Penelitian ini menunjukkan bahwa penyisihan nitrogen dapat dioptimalkan dengan menggunakan sedotan plastik sebagai media. Penyisihan nitrogen terutama terjadi di bagian bawah reaktor di mana rata-rata penyisihan nitrogen pada 1/3, 2/3, dan paling atas ketinggian reaktor masing-masing adalah 60, 30, dan 10%.","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"3 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90220982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis Sebaran Lindi di Sekitar Kawasan TPA Batu Layang Berdasarkan Nilai Resistivitas","authors":"Fitriana Meilasari, H. Sutrisno, Budhi Purwoko","doi":"10.55981/jtl.2023.247","DOIUrl":"https://doi.org/10.55981/jtl.2023.247","url":null,"abstract":"Open dumping activities at the Batu Layang TPA can potentially cause leachate pollution to the environment. Leachate that seeps into the ground can contaminate groundwater. Most people around the Batu Layang TPA use groundwater for MCK (bath, wash, toilet) purposes. If the groundwater is contaminated with leachate and used sustainably by the community, it will impact health problems. Therefore, it is necessary to manage the distribution of leachate. One of the leachate management systems is modeling the potential distribution of leachate below the soil surface. The purpose of this research is to analyze the distribution of subsurface leachate around the Batu Layang landfill area based on the resistivity value. They are modeling the potential distribution of leachate below the ground surface in this study using the Wenner configuration geoelectric method. Processing of geoelectrical measurement data using Res2DInv software so that the potential distribution of leachate under the soil surface is obtained in 2 Dimensional forms. The result of this research is the resistivity value <10 m is interpreted as leachate, with an error rate (RMS error) of 7.7–11.3%. The geology of the study area is composed of peat soil, where the constituent rocks have high porosity (83.43–92.92%) and increased permeability (2.97×10-5–8.31×10-5 m/s). Porosity and permeability affect the infiltration of leachate into the soil. The topography of the study area is relatively flat, so it is estimated that the velocity of leachate distribution horizontally and vertically under the soil surface is moderate.\u0000ABSTRAK\u0000Kegiatan open dumping di TPA Batu Layang dapat berpotensi menyebabkan pencemaran lindi ke lingkungan. Lindi yang merembes ke dalam tanah dapat mencemari air tanah. Sebagian besar masyarakat di sekitar TPA Batu Layang memanfaatkan air tanah untuk keperluan MCK (mandi, cuci, kakus). Jika air tanah tersebut tercemar lindi dan dimanfaatkan secara berkesinambungan oleh masyarakat maka akan berdampak pada gangguan kesehatan. Oleh karena itu, perlu adanya pengelolaan sebaran lindi. Satu di antara sistem pengelolaan lindi adalah pemodelan potensi sebaran lindi di bawah permukaan tanah. Tujuan penelitian adalah analisis sebaran lindi bawah permukaan tanah di sekitar kawasan TPA Batu Layang berdasarkan nilai resistivitas. Pemodelan potensi sebaran lindi di bawah permukaan tanah pada penelitian ini menggunakan metode geolistrik konfigurasi Wenner. Pengolahan data hasil pengukuran geolistrik menggunakan software Res2DInv sehinggga didapatkan potensi sebaran lindi di bawah permukaan tanah dalam bentuk 2 Dimensi. Hasil dari penelitian ini adalah nilai resistivitas <10 Ωm diinterpretasi sebagai lindi, dengan tingkat kesalahan (error RMS) sebesar 7,7–11,3%. Geologi daerah penelitian tersusun oleh tanah gambut, dimana batuan penyusunnya memiliki porositas tinggi (83,43–92,92%) dan permeabilitas tinggi (2,97×10-5–8,31×10-5 m/s). Porositas dan permeabilitas mempengaruhi daya infiltrasi ","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81861014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}