Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia最新文献

{"title":"Evaluasi Jaringan Drainase Kecamatan Tanjung Kabupaten Lombok Utara","authors":"Arifal Hidayat","doi":"10.33366/rekabuana.v6i2.2693","DOIUrl":"https://doi.org/10.33366/rekabuana.v6i2.2693","url":null,"abstract":"North Lombok Regency is located north of the below of Mount Rinjani where this area consists of five sub-districts, i.e., Pemenang, Tanjung, Gangga, Kayangan, and Bayan sub-districts, with a total population of 220,412 people. Despite being the youngest district, it has many problems, one of which is environmental problems, such as flooding and inundation. During the rainy season, inundation occurs in several locations in Tanjung District. Inundation happens because the existing drainage system is not functioning correctly. Based on the background mentioned before, a study was conducted to determine the condition of the existing channel, the factors causing inundation, and appropriate actions to overcome the problem of flooding and inundation in Tanjung District, North Lombok Regency. The method used in this research is to make observations and surveys in the field. From the analysis results, it is known that the problems of flooding and inundation in Tanjung District, North Lombok Regency are influenced by natural conditions and human activities. The solution or action that can be taken is to redesign and repair the damaged canal walls and clean the drainage channels from sediment and pile of trash.ABSTRAKKabupaten Lombok Utara berada di sebelah utara kaki Gunung Rinjani. Terdiri dari lima kecamatan yakni Kecamatan Pemenang, Tanjung, Gangga, Kayangan, dan Bayan dengan total jumlah penduduk 220.412 jiwa. Meskipun menjadi kabupaten termuda, banyak permasalahan yang dihadapi, salah satunya permasalahan lingkungan, seperti banjir dan genangan. Ketika musim penghujan terjadi genangan di beberapa lokasi di Kecamatan Tanjung. Hal ini disebabkan oleh sitem drainase yang ada tidak berfungsi dengan baik. Berdasarkan latar belakang di atas, dilakukan penelitian untuk mengetahui kondisi saluran eksisting, faktor penyebab terjadinya genangan dan upaya apa yang sesuai untuk menanggulangi permasalahan banjir dan genangan di Kecamatan Tanjung Kabupaten Lombok Utara. Metode yang digunakan dalam penelitian ini adalah dengan melakukan observasi dan survey di lapangan. Hasil dari analisi diketahui bahwa permasalahan banjir dan genangan di Kecamatan Tanjung Kabupaten Lombok Utara dipengaruhi oleh kondisi alam dan aktivitas manusia. Upaya yang dapat dilakukan saat ini adalah dengan melakukan redesain dan perbaikan pada dinding-dinding saluran yang mengalami kerusakan serta membersihkan saluran drainase dari tumpukan sedimentasi dan sampah.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88810098","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":"Ekstraksi Gelatin dari Tulang Ikan Nila Merah (Oreochromis Niloticus) dengan Variasi Konsentrasi Asam Klorida (HCl)","authors":"Nurul Diah Lestari, Siti Fatimah","doi":"10.33366/rekabuana.v6i2.2704","DOIUrl":"https://doi.org/10.33366/rekabuana.v6i2.2704","url":null,"abstract":"Gelatin is a protein from animal bones, white connective tissue, or skin collagen. Every year the number of imports of gelatin from several countries is increasing. With the production of gelatin from tilapia bones on a large scale, it is hoped that it can help improve the economy in Indonesia and reduce the number of gelatin imports. The purpose of this study was to process tilapia bone into gelatin using hydrochloric acid to make it the essential ingredient for making gelatin which is halal and can be consumed to reduce the amount of tilapia bone waste. The concentrations of hydrochloric acid used were 4, 5, and 6% in 500 ml of solution. The concentration of hydrochloric acid affects the yield of gelatin. The quality of gelatin obtained has met the criteria of national gelatin quality standards to be used for food raw materials. The resulting yield ranges from 1.56 - 3.13%, while the water content ranges from 6.7 - 12.17%, ash content from 1.75 - 2.52%, and pH 4.12 - 5.04.ABSTRAKGelatin merupakan protein dari tulang hewan, jaringan ikat putih, atau kolagen kulit. Setiap tahun jumlah impor gelatin dari beberapa negara semakin meningkat. Dengan adanya produksi gelatin dari tulang ikan nila dengan skala yang besar diharapkan dapat membantu meningkatkan perekonomian di Indonesia dan mengurangi jumlah impor gelatin. Tujuan dari penelitian ini adalah mengolah tulang ikan nila menjadi gelatin dengan penggunaan asam klorida guna menjadikannya sebagai bahan dasar pembuatan gelatin yang halal dan dapat dikonsumsi sehingga dapat mengurangi jumlah limbah tulang ikan nila. Konsentrasi asam klorida yang digunakan yaitu 4, 5, dan 6% dalam 500 ml larutan. Konsentrasi asam klorida mempengaruhi hasil dari gelatin.  Kualitas gelatin yang didapatkan telah memenuhi kriteria standar mutu gelatin nasional sehingga dapat dipakai untuk bahan baku makanan. Rendemen yang dihasilkan berkisar 1,56 – 3,13 % sedangkan kadar air berkisar antara 6,7 – 12,17 %, kadar abu 1,75 – 2,52 %, dan pH 4,12 – 5,04.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84322482","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":"Evaluasi Neraca Massa Kolom Deethanizer di Unit Gas Plant","authors":"Arif Nurrahman, Z. Furqon","doi":"10.33366/rekabuana.v6i2.2682","DOIUrl":"https://doi.org/10.33366/rekabuana.v6i2.2682","url":null,"abstract":"Gas Plant Unit in company X engaged in energy in Balikpapan has a design capacity of 560 tons/day. This unit serves to produce propane gas (C3H8) and butane (C4H10) to become LPG products. The Deethanizer column is a Light End fractionation unit that separates Ethane compounds from Propane and Butane at operating temperature resulting in LPG products that meet the specifications. The researcher's goal is to obtain the actual mass balance calculation and the flow rate of the process—the method used from retrieving data on operating conditions directly to the industry and performing calculations. The Deetanizer column is composed of 40 sieve trays, the entry feed of the 20th tray operates at the mass flow rate of the Deethanizer column feed of 5949,184 kg/hour, the flow rate of LPG products is 3428,334 kg/hour, and the mass flow rate of gas overhead is 150,186 kg/hour so that there is an actual % loss of 39,84%, this is because this unit should be time to be repaired. However, this does not affect the products produced, which can be seen from laboratory tests on LPG product samples.ABSTRAKGas Plant Unit diperusahaan X yang bergerak dibidang energi di Balikpapan mempunyai kapasitas desain 560 ton/hari. Unit ini berfungsi untuk memproduksi gas propane (C3H8) dan butana (C4H10) sehingga menjadi produk LPG. Kolom Deethanizer adalah unit fraksinasi Light Ends yang berfungsi untuk memisahkan senyawa Ethana dari Propana dan Butana dengan proses destilasi bertekananan sehingga menghasilkan produk LPG yang memenuhi spesifikasi. Tujuan peneliti untuk mendapatkan perhitungan neraca massa aktual serta laju alir proses. Metode yang digunakan dari pengambilan data kondisi operasi langsung ke industri serta melakukan perhitungan. Kolom Deetanizer tersusun dari 40 buah sieve tray, umpan masuk dari tray ke-20, beroperasi pada laju alir massa umpan kolom Deethanizer sebesar 5949,184 kg/jam, laju alir produk LPG sebesar 3428,334 kg/jam dan laju alir massa overhead gas sebesar 150,186 kg/jam sehingga diperoleh % yield aktual 57.62 dan % losses aktual sebesar 39,84%, hal ini disebabkan karena unit ini seharusnya sudah waktunya untuk di perbaiki. Namun hal ini tidak berpengaruh terhadap produk yang dihasilkan, hal ini dapat dilihat dari hasil uji Laboratorium mengenai Sampel Produk LPG.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78623816","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":"STUDY TEMPERATUR PENYIMPANAN PADA PROSES PENIMBUNAN B30 GUNA MENGURANGI KOROSI","authors":"Steven Johanes, Oksil Venriza, B. Sugito","doi":"10.32493/JITK.V5I2.11468","DOIUrl":"https://doi.org/10.32493/JITK.V5I2.11468","url":null,"abstract":"Pressure Vessel is a vessel to contain both liquid and gasses. The storage tank is one of the tools to contain fluid, so it is an important factor in an industry such as chemistry, oil, and power plants. Biodiesel is an alternative fuel made from vegetable oil that is environmentally friendly and can reduce exhaust emissions in diesel engines. Biodiesel is renewable and reduces engine performance, so it can be used as a solution to overcome the reduced fossil fuel reserves. It is necessary to determine the corrosion rate of biodiesel. This research was conducted by storing biodiesel in the sample tank for 0 day, 1 day, and 4 days after that, the ASTM D-130 copper strip corrosion test was carried out for 3 hours ± 5 minutes. From the research, we know that corrosion rate at indoor had been stored for 4 days and for outdoor at day 0,1 and 4 gets greater corrosion with result 1b( dark orange).","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87330922","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 PENAMBAHAN MONOGLISERIDA MINYAK NABATI TERHADAP SIFAT MEKANIS BIOPLASTIK TAPIOKA","authors":"Permatasari Putri Benedicta, Sri Sutanti","doi":"10.32493/JITK.V5I2.8761","DOIUrl":"https://doi.org/10.32493/JITK.V5I2.8761","url":null,"abstract":"Minyak nabati adalah minyak yang berasal dari tumbuhan yang selama ini penggunaannya terbatas sebagai bahan makanan dan flavor. Contoh minyak nabati adalah minyak kelapa dan minyak sawit. Pada penelitian ini, dilakukan teknologi pengolahan lanjut dari minyak kelapa dan minyak sawit menjadi monogliserida. Monogliserida kemudian diaplikasikan pada teknologi bioplastik tapioka. Penelitian ini bertujuan untuk mengetahui apakah monogliserida dapat meningkatkan sifat mekanis bioplastik tapioka. Parameter sifat mekanis bioplastik meliputi sifat ketahanan air, kuat tarik, persen elongasi, dan morfologi. Metode penelitian dilakukan dengan Rancangan Acak Kelompok 2 faktor yaitu jenis minyak nabati untuk pembuatan monogliserida (minyak kelapa sawit dan minyak kelapa) dan presentase penambahan monogliserida (0%; 0,2%; 0,4%; 0,6%; 0,8%, dan 1%). Dari hasil penelitian, didapatkan bahwa faktor jenis dan presentase monogliserida mempengaruhi sifat mekanis bioplastik tapioka. Hasil ketahanan air terbaik BDPMK dan BDPMS pada presentase 1%, kuat tarik terbaik pada presentase 0,6%, persen elongasi terbaik pada presentase 0,8%, dan morfologi BDPMK lebih halus dibandingkan morfologi film BDPMS. Dari hasil keseluruhan dapat disimpulkan bahwa monogliserida dapat menggantikan fungsi minyak nabati, gliserol dan emulsifier secara bersamaan dengan jenis monogliserida minyak kelapa lebih dianjurkanKata kunci : BioplastiK, minyak kelapa, minyak nabati, minyak sawit, monogliserida","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91135414","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":"Yield Bioethanol From Pineapple Skin Waste With Yeast Mass And Fermentation Time","authors":"Siti Khuzaimah","doi":"10.32493/JITK.V5I2.10932","DOIUrl":"https://doi.org/10.32493/JITK.V5I2.10932","url":null,"abstract":"Buah nanas merupakan buah yang umum dimanfaatkan masyarakat Indonesia sebagai bahan makanan. Dengan besarnya produksi nanas maka jumlah limbah yang dihasilkan juga besar terutama limbah kulit nanas. Kandungan gula yang cukup tinggi dari hasil penelitian diketahui kandungan glukosa sebesar 15,6 % sehingga dapat dimanfatkan untuk menghasilkan bioethanol dengan proses fermentasi selanjutnya dengan distilasi. Tujuan dari penilitain ini untuk menentukan besarnya etanol tertingi pada variasi waktu fermentasi dan berat yeast. Proses pembuatan bioethanol tahap awal melalui proses ekstraksi dihasilkan sari kulit nanas selanjutnya tahap fermentasi pada pH 4,5 dengan menggunakan yeast dan urea agar pertumbuhan dan perkembangbiakan yeast optimal. Untuk memisahkan etanol dengan proses distilasi. Dalam penelitian ini dilakukan variasi waktu fermentasi 2,4,6,8,10 dan 12  hari dan variasi berat yeast 2,4,6,8,dan 12 gram. Hasil penelitan didapat untuk waktu fermentasi yang optimal menghasilkan yield etanol tertinggi pada 6 hari fermentasi sebesar 32,45 % sedangkan berat yeast yang digunakan untuk menghasilkan yield etanol yang optimal dengan berat 4 gram dan yield etanol sebsar 30,78%.  ","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77696636","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":"Maksimasi Produk Avtur Dengan Pengaturan Cutting Point Di Kolom Fraksinasi Unit Hydrocracking Complex","authors":"Zami Furqon","doi":"10.32493/JITK.V5I2.12069","DOIUrl":"https://doi.org/10.32493/JITK.V5I2.12069","url":null,"abstract":"Abstrak Fraksionator di Unit Hydro Cracking Complex, merupakan jenis proses distilasi atmosferis yang mengolah jenis minyak berat campuran dari berbagai sumber seperti HVGO dan HCGO di HCC Unit untuk mendapatkan produk berupa LPG, light naphta, heavy naphta, Light Kerosene, Heavy Kerosene, diesel dan Net Bottom  Fractinatotion. Perubahan Cutting Point pada produk Heavy Kerosene akan berdampak pada perubahan yield Heavy Kerosene dan kondisi operasi pada kolom fraksinasi yaitu draw tray Heavy Kerosene. Perubahan cutting point pada produk Heavy Kerosene juga akan menyebabkan perubahan sifat produk Avtur seperti density, flash point, Kuop, freezing point. Penurunan Cutting Point antara Heavy Kerosene dan Diesel sebesar 5 °F, dapat meningkatkan yield produk Heavy Kerosene hingga mencapai 0.78 % volume on crude atau sebesar 1.57 m³/jam. Perubahan cutting point akan diikuti juga dengan perubahan kondisi operasi  pada kolom fraksionatornya, yaitu didapat suhu Heavy Kerosene draw tray sebesar 224°C. Keywords : Average Boiling Point, Cutting Point, Fractionation, Hydrocracking, Kerosene.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75095458","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":"ADSORPTION OF CONGO RED DYE USING THE KENAF CORE","authors":"M. Muryanto","doi":"10.32493/JITK.V5I2.10241","DOIUrl":"https://doi.org/10.32493/JITK.V5I2.10241","url":null,"abstract":"Kenaf core is waste from the kenaf plant at fiber process. The utilization is still very limited, while the number is increasing due to the increasing number of fiber processes from kenaf plants to become rope or raw materials in the textile industry. However, the textile industry also produces dye waste which is harmful to the environment. Therefore, this study aims to utilize kenaf core as an adsorbent for the congo red dye. The adsorption of the congo red dye by the kenaf core used a variation of the initial concentration and the duration of the adsorption process. Adsorption experimental data showed a decrease in dye concentration from up to 2 ppm, with decolorization reaching 96%. This study proves that kenaf core potential to be used as dye adsorbent. ","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78723987","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 KANDUNGAN PHTHALATE PLASTISIZER DEHP (Bis (2-ethylhexyl) phthalate) PADA BOTOL MINUMAN PLASTIK DENGAN METODE EN71-5 MENGGUNAKAN GC-MS","authors":"Budhi Indrawijaya","doi":"10.32493/JITK.V5I2.11298","DOIUrl":"https://doi.org/10.32493/JITK.V5I2.11298","url":null,"abstract":"Produk-produk berbahan dasar plastik sudah menjadi kebutuhan manusia sehari-hari. Dari sekian banyak produk plastik yang beredar di pasaran, botol minuman adalah salah satunya. Dibalik warna, bentuk dan variasi ukuran yang kita temukan di pasaran, tentu kita harus tahu, jenis bahan dasar plastik yang digunakan dalam pembuatan botol minuman tersebut dan amankah produk tersebut kita gunakan. Salah satu bahaya yang mengintai kita adalah penggunaan plastisizer sebagai bahan aditif yang berfungsi meningkatkan fleksibilitas dan ketahanan material plastik. Plastisizer ini dapat mengandung zat berbahaya yaitu DEHP (Bis (2-ethylhexyl) phthalate), yang merupakan jenis ester phthalates. Studi yang telah dilakukan mendapati, phthalates dapat mempengaruhi perkembangan sistem reproduksi pria, atau mampu mengurangi tingkat hormon testosterone pria. Dan yang lebih buruk, phthalates mampu menimbulkan penyakit kanker. Analisa kadar senyawa phthalates pada bahan plastik dapat dilakukan dengan metode EN71-5. Preparasi sampel dilakukan dengan cara ekstraksi menggunakan soxhlet ekstraktor dan pelarut organic n-Hexane, kemudian sampel dianalisa dengan isntrumen GC-MS. Instrumen GC-MS (Gas Chromatography-Mass Spectrometer) dipilih karena memiliki kemampuan yang sangat baik terutama selektifitasnya dalam menganalisa senyawa-senyawa organic kompleks, baik secara kuantitatif maupun kualitatif.  Dari hasil analisa didapatkan hasil kandungan senyawa phthalates DEHP (Bis (2-ethylhexyl) phthalate) berada dibawah Limit Deteksi alat atau dapat disimpulkan senyawa tersebut Tidak Terdeteksi pada sampel, sehingga memenuhi ambang batas untuk barang yang mengandung bahan kimia berbahaya sesuai Permendag No 18 tahun 2019.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80156084","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":"SCALE UP PEMBUATAN STARTER BIOGAS: PREPARASI LUMPUR AKTIF UNTUK PRODUKSI BIO-HIDROGEN","authors":"S. I. Heriyanti, J. Prasetyo, Galuh Wirama Murti, Atti Sholihah, Arya Bhaskara Adiprabowo","doi":"10.32493/JITK.V5I2.11101","DOIUrl":"https://doi.org/10.32493/JITK.V5I2.11101","url":null,"abstract":"POME as liquid waste from palm oil processing has a high organic content so it is suitable for anaerobic digestion process to produce biogas and bio-hydrogen. This study aims to prepare activated sludge from biogas starter which will be used for bio-hydrogen production. The production of biogas starter with cow dung using POME as feed and the addition of nutrients (urea and DAP) at a certain ratio and buffer (soda ash) was carried out in a fermenter with a capacity of 1 m3 using a fed batch system. During one month of fermentation, methane concentration in biogas increased and stabilized until it reached the highest concentration at 33,7%. The fermentation process also produces hydrogen whose concentration decreases with time because hydrogen-producing microbes are dominant at the beginning of the fermentation, but then the hydrogen produced was consumed by methanogenic bacteria to produce CO2 and CH4. This confirmed that the activated sludge produced from the 1 m3 fermenter contained hydrogen-producing bacteria which were then further processed, one of which was heating at a certain temperature, to suppress the growth of methanogenic bacteria.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79463828","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}