Jurnal Sains dan Terapan Kimia最新文献

{"title":"PERSEPSI SOSIAL BUDAYA MASYARAKAT LOKAL TERHADAP PERENCANAAN EKOWISATA PEDESAAN DI KABUPATEN KERINCI","authors":"Occy Bonanza, Dyah Prabandari","doi":"10.29244/jstsv.12.khusus.81-95","DOIUrl":"https://doi.org/10.29244/jstsv.12.khusus.81-95","url":null,"abstract":"Rural areas are still the mainstay target of exploration program from various stakeholders. Local communities as owners of rural areas often do not get proper returns from these explorations. One of the reasons is that the local community lacks of knowledge and not much involved in regional development. The success of rural area development is strongly influenced by the perception of the local community. Therefore in the development planning stage, perception should be one of the indicators that must be considered, as well as for eco-rural tourism planning. The aim of the study was to analyze the perception of local communities in eco-rural tourism planning from socio-cultural aspect. The research was carried out in Kerinci District, Jambi Province, using close-ended questionnaire instrument with One Score One Indicator Scoring System assessment pattern. The results showed that the local community stated the socio-cultural aspect was relevant to be developed in accordance with the values ​​that had developed in the rural area. In addition of the interpretation that local communities were eager to jointly develop their rural areas into eco-rural tourism areas by meeting the indicators that have been formulated. This study concludes that local communities have great opportunities to develop their rural areas according to the concept of eco-rural tourism. \u0000ABSTRAKKawasan pedesaan merupakan kawasan yang sampai saat ini masih menjadi kawasan yang terus dikembangkan oleh berbagai pemangku kepentingan. Masyarakat lokal sebagai pemilik kawasan pedesaan seringkali tidak mendapatkan imbal balik yang sepadan dari eksplorasi tersebut. Salah satu sebabnya, karena masyarakat lokal masih kurang pengetahuan dan tidak banyak dilibatkan dalam pembangunan kawasan. Keberhasilan pembangunan kawasan pedesaan sangat dipengaruhi oleh persepsi masyarakat lokal itu sendiri. Sehingga dalam tahap perencanaan pembangunan sudah sepatutnya persepsi menjadi salah satu indikator yang harus dipertimbangkan, begitu juga untuk perencanaan ekowisata pedesaan. Penelitian ini bertujuan untuk menganalisis persepsi masyarakat lokal dalam perencanaan ekowisata pedesaan yang dilihat dari aspek sosial budaya. Penelitian dilaksanakan di Kabupaten Kerinci Provinsi Jambi, dengan menggunakan instrument berupa kuesioner tertutup dengan pola penilaian One Score One Indicator Scoring System. Hasil penelitian menunjukkan bahwa masyarakat lokal menyatakan aspek sosial budaya relevan untuk dikembangkan karena sesuai dengan nilai-nilai yang sudah berkembang pada kawasan pedesaan tersebut. Selain itu, Hal ini dapat dimaknai pula bahwa masyarakat lokal, mau untuk bersama-sama membangun kawasan pedesaannya menjadi kawasan ekowisata pedesaan dengan perlu memenuhi indikator-indikator yang telah dirumuskan. Studi ini menyimpulkan bahwa masyarakat lokal memiliki peluang besar dalam membangun kawasan pedesaannya sesuai dengan konsep ekowisata pedesaan.","PeriodicalId":17766,"journal":{"name":"Jurnal Sains dan Terapan Kimia","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85199396","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":"APLIKASI PENGAJUAN PENGADAAN BARANG DAN JASA BERBASIS WEB","authors":"Gema Parasti Mindara, Fachri Aldin Fansuri, Sofiyanti Indriasari, Inna Novianty, Walidatush Sholihah","doi":"10.29244/jstsv.12.khusus.103-118","DOIUrl":"https://doi.org/10.29244/jstsv.12.khusus.103-118","url":null,"abstract":"PT. Rajawali Nusantara Indonesia (PT RNI) is one of Stated-Owned Enterprises (BUMN) which is a holding company for the food industry. The primary industries of PT. RNI are agriculture and agroindustry, livestock and fisheries, as well as trade and logistics. In the internal scope of the company there is an activity, namely the submission of the procurement of goods and services, in that there is an applicant who wants to make a procurement proposal to meet the daily needs of his work.Procurement Submission at PT RNI, an employee must follow the flow with the provisions of large projects such as for example in building construction which of course have differences in terms of budget, level of urgency and method of submission. In addition, the applicant must also send a procurement request file which must go to the room unit concerned. A solution for creating a web-based internal goods and services procurement application, whose key feature is to submit a procurement request and have it validated by the verifier, can address this issue.The method used in making the application is the prototype method which consists of stages of communication, quick plan, modelling quick design, construction of prototype and deployment delivery and feedback. In addition, in making the system testing using black box testing which is centered on the functionality of the software. \u0000ABSTRAKPT. Rajawali Nusantara Indonesia (PT RNI) adalah perusahaan holding pangan milik Badan Usaha Milik Negara (BUMN). Perusahaan ini bergerak dibidang Pertanian dan Agroindustri, Peternakan dan Perikanan, serta Perdagangan dan Logistik.Salah satu kegiatan perusahaan yaitu pengajuan pengadaan barang dan jasa. Pengajuan ini akan digunakan untuk memenuhi kebutuhan harian pekerjaan.Salah satu contoh pengajuan di PT. RNI adalah pengajuan inventaris barang. Saat pihak pegawai melakukan pengajuan inventaris maka pihak pegawai harus mengisi sebuah formulir pengajuan. Formulir ini selanjutnya diberikan kepada pihak verifikator untuk dikaji dan disetujui. Proses ini menjadi sangat panjang ketika ada proyek konstruksi gedung. Untuk proyek besar memerlukan proses yang cukup panjang, perlu adanya pengkajian dari segi anggaran, tingkat urgensi dan metode pengajuan. Apabila proses ini masih dilakukan dengan menggunakan formulir pengajuan, maka akan banyak berkas yang diberikan. Pengelolaan pengajuan dengan cara seperti ini berpotensi membuat berkas menjadi tercecer, terselip bahkan hilang. Disisi lain, pihak pegawai tidak bisa melakukan pelacakan pengajuan yang dia ajukan. Permasalahan tersebut dapat diatasi dengan dibuatnya Aplikasi Pengajuan Barang dan Jasa Internal berbasis web. Aplikasi ini dapat mengurangi penggunaan kertas (paperless). Proses pengajuan diharapkan menjadi lebih cepat dan dapat memantau proses pengajuan dengan sangat baik. Pembuatan aplikasi ini menggunakan Metode Prototipe. Pembuatan aplikasi ini menggunakan framework Laravel, bahasa pemrograman PHP dan database menggunakan MySQL. ","PeriodicalId":17766,"journal":{"name":"Jurnal Sains dan Terapan Kimia","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76126475","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":"WEBSITE UNIVERSE DIGILABS DI PT SEMESTA INOVASI NUSANTARA BERBASIS KLIEN UNTUK PENINGKATAN KINERJA PERUSAHAAN","authors":"Faldiena Marcelita, Khonza Izzati, Olivia Sekar Nindia","doi":"10.29244/jstsv.12.khusus.37-50","DOIUrl":"https://doi.org/10.29244/jstsv.12.khusus.37-50","url":null,"abstract":"PT Semesta Inovasi Nusantara is a company engaged in multimedia and digital services. The business activities carried out by PT Semesta Inovasi Nusantara are offering digital services whose products are in the form of multimedia products, branding, marketing and so on. So far, the company's offering and selling of digital services is still through word of mouth. In addition, the business processes at PT Semesta Inovasi Nusantara have not been digitized and integrated or are still traditional, resulting in several obstacles. The main problem is that clients are often late paying. The bill for payment has been issued and the project results have been submitted, but the client often delays the payment, thus hampering the company's operational activities because production costs have not been covered and affect the sales target of the marketing and sales division.Based on the problems described above, the Universe Digilabs website was created at PT Semesta Inovasi Nusantara to facilitate interaction between the company and its clients through the creation of several features. Creation of the website using the Prototype method. This method is used to identify user needs that are not clear at the beginning. At the stage of system submission, testing is carried out using the black box method. The test results are successful and the system is handed over to the company. \u0000ABSTRAKPT Semesta Inovasi Nusantara merupakan perusahaan yang bergerak dalam bidang multimedia dan digital services. Kegiatan usaha yang dilakukan oleh PT Semesta Inovasi Nusantara yaitu menawarkan layanan digital yang produknya berupa produk multimedia, branding, marketing dan  sebagainya.Selama ini, penawaran dan penjualan layanan digital yang dilakukan oleh perusahaan masih melalui mulut ke mulut. Selain itu, proses bisnis pada PT Semesta Inovasi Nusantara belum terdigitalisasi dan terintegrasi atau masih tradisional sehingga muncul beberapa kendala. Kendala yang menjadi pokok permasalahan yaitu klien sering telat membayar. Tagihan pembayaran telah keluar dan hasil proyek telah diserahkan, tetapi klien seringkali menunda pembayaran sehingga menghambat kegiatan operasional perusahaan karena biaya produksi yang belum tertutup dan memengaruhi target penjualan divisi marketing and sales. Berdasarkan permasalahan yang telah diuraikan diatas, maka dibuatlah website Universe Digilabs di PT Semesta Inovasi Nusantara untuk memfasilitasi interaksi antara perusahaan dengan klien melalui pembuatan beberapa fitur. Pembuatan website menggunakan metode Prototipe. Metode ini digunakan untuk mengidentifikasi kebutuhan pengguna yang belum jelas diawal. Pada tahap penyerahan sistem dilakukan pengujian menggunakan metode black box. Hasil pengujian berhasil dan sistem diserahkan ke perusahaan.","PeriodicalId":17766,"journal":{"name":"Jurnal Sains dan Terapan Kimia","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91282347","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":"KOMUNIKASI INOVASI DALAM ADOPSI BENIH UNGGUL BARU TANAMAN PANGAN PADA KELOMPOK TANI DI KABUPATEN NAGAN RAYA","authors":"Sarah Ridwan, Putri Maulina, Yuhdi Fahrimal","doi":"10.29244/jstsv.12.khusus.165-180","DOIUrl":"https://doi.org/10.29244/jstsv.12.khusus.165-180","url":null,"abstract":"Superior seeds are one solution for improving agricultural production in Nagan Raya Regency. The main problem that occurs is the difficulty of adoption by farmers due to a lack of information regarding the benefits that will be obtained through superior seeds. Therefore, communication plays a role in the process of spreading ideas and technology so as to accelerate the process of agricultural modernization. This study aims to identify and explain the communication of innovations made between agricultural and food policymakers and farmers in Nagan Raya Regency. The method used in this research was descriptive qualitative by extracting information from agricultural policymakers in Nagan Raya Regency consisting of farmer groups, agricultural extension workers, and employees of the Department of Agriculture and Livestock in Nagan Raya Regency. The results showed that superior seed innovation in Nagan Raya Regency still focused on three types, namely, Rice, Corn, and Soybeans (Pajale) which were imported from outside the region because there were not enough supporting resources for developing superior seeds independently in Nagan Raya Regency. The communication process carried out by agricultural policymakers in disseminating superior seeds to farmer groups includes (1) introduction of target audiences based on demographic aspects and socio-economic status of farmers; (2) designing messages that are appropriate to the target group's target audience; (3) determination of methods and techniques using comparative study methods, demonstration plots, and demonstration plots; and (4) selection of communication channels that are limited to face-to-face communication and limited use of audio-visual media. \u0000ABSTRAKBenih unggul merupakan salah satu solusi bagi perbaikan produksi pertanian di Kabupaten Nagan Raya. Permasalahan utama yang terjadi adalah sulitnya adopsi dilakukan oleh petani karena kurangnya informasi terkait manfaat yang akan didapatkan melalui benih unggul. Oleh karenanya komunikasi berperan dalam proses penyebaran ide dan teknologi sehingga mempercepat proses modernisasi pertanian. Penelitian ini bertujuan untuk menemukenali dan menjelaskan komunikasi inovasi yang dilakukan antara pemangku kebijakan pertanian dan pangan dengan petani di Kabupaten Nagan Raya. Metode yang digunakan dalam penelitian ini adalah deskriptif kualitatif dengan menggali informasi dari pemangku kebijakan bidang pertanian di Kabupaten Nagan Raya yang terdiri atas kelompok tani, penyuluh pertanian, pegawai Dinas Pertanian dan Peternakan Kabupaten Nagan Raya. Hasil penelitian menunjukkan bahwa inovasi benih unggul di Kabupaten Nagan Raya masih berfokus pada tiga jenis komoditas, yaitu, Padi, Jagung, dan Kedelai (Pajale) yang didatangkan dari luar daerah karena belum cukupnya sumber daya pendukung pengembangan benih unggul secara mandiri di Kabupaten Nagan Raya. Proses komunikasi yang dilakukan oleh pemangku kebijakan bidang pertanian dalam mensosialisasikan benih unggul kep","PeriodicalId":17766,"journal":{"name":"Jurnal Sains dan Terapan Kimia","volume":"103 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83747914","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 TERPAAN BERITA DAN KREDIBILITAS PEMBERITAAN OMICRON PADA KOMPAS.COM TERHADAP PERILAKU SEHAT MAHASISWA DKI JAKARTA","authors":"Agung Pangestu, Muhammad Isnaini","doi":"10.29244/jstsv.12.khusus.154-164","DOIUrl":"https://doi.org/10.29244/jstsv.12.khusus.154-164","url":null,"abstract":"This research aims to determine how much the influence between news exposure and news credibility of omicron on Kompas.com toward DKI Jakarta students’ healthy behavior, both partially and simultaneously. This research uses a quantitative approach with an online survey method to 100 respondents as a sample. Statistical test using SPSS 25 versions. This research using uses and gratification theory as the theoretical basis. The result showed that there is a significant and positive influence between the news exposure of COVID-19 omicron variant toward student’ healthy behavior about 11.6%, otherwise there is a significant and positive influence between the news credibility of omicron on Kompas.com toward student’s healthy behavior about 22.24%, and simultaneously have a significant and positive influence between the news exposure of COVID-19 omicron variant and news credibility of omicron on Kompas.com toward student’s healthy behavior about 33.4% and 66.6% the rest is another variable that not examined in this research. In conclusion, all hypotheses in this research. Ho is rejected and Ha is accepted. Recommendations in this research were Kompas.com can be able to present news that is more trustworthy to the public so that the credibility of the media will be higher and more and more people will actively choose to use Kompas.com media as a medium to meet their information needs. \u0000ABSTRAKPenelitian ini bertujuan untuk mengetahui seberapa besar pengaruh terpaan berita dan kredibilitas pemberitaan omicron pada Kompas.com terhadap perilaku sehat mahasiswa DKI Jakarta, baik secara parsial maupun simultan. Penelitian ini menggunakan pendekatan kuantitatif dengan metode survei yang disebarkan secara daring kepada 100 responden yang menjadi sampel pada penelitian ini. Uji statistik penelitian ini menggunakan SPSS versi 25. Teori yang digunakan pada penelitian ini adalah uses and gratifications theory. Hasil penelitian menunjukkan bahwa terdapat pengaruh yang signifikan dan positif pada variabel terpaan berita sebesar 11,6% terhadap perilaku sehat, selain itu terdapat pengaruh yang signifikan dan positif pada variabel kredibilitas pemberitaan omicron pada Kompas.com sebesar 22,24% terhadap perilaku sehat mahasiswa, dan secara simultan variabel terpaan berita dan kredibilitas pemberitaan omicron pada Kompas.com terhadap perilaku sehat mahasiswa menunjukkan terdapat pengaruh sebesar 33,4% dan 66,6% sisanya merupakan variabel lain yang tidak dijelaskan dalam penelitian ini. Maka dapat disimpulkan bahwa seluruh hipotesis pada penelitian ini Ho ditolak dan Ha diterima. Rekomendasi pada penelitian ini adalah Kompas.com dapat mampu menyajikan berita-berita yang lebih dapat dipercaya oleh masyarakat sehingga kredibilitas media akan semakin tinggi dan semakin banyak masyarakat yang secara aktif memilih untuk menggunakan media Kompas.com sebagai media untuk memenuhi kebutuhan akan informasinya.","PeriodicalId":17766,"journal":{"name":"Jurnal Sains dan Terapan Kimia","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88099245","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":"Development of QSAR Model of Caffeic Acid Phenethyl Ester as Anti-Cancer HT-29","authors":"U. Santoso","doi":"10.20527/jstk.v16i2.12632","DOIUrl":"https://doi.org/10.20527/jstk.v16i2.12632","url":null,"abstract":"","PeriodicalId":17766,"journal":{"name":"Jurnal Sains dan Terapan Kimia","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84672091","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":"Antioxidant and Antibacterial Activity of The Stem Bark Extract of Sterculia Foetida L.","authors":"T. Y. Lulan","doi":"10.20527/jstk.v16i2.12040","DOIUrl":"https://doi.org/10.20527/jstk.v16i2.12040","url":null,"abstract":"","PeriodicalId":17766,"journal":{"name":"Jurnal Sains dan Terapan Kimia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85409631","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 Organic Compounds in Leachate using Precipitated Calcium Carbonate (PCC) from Ale-Ale Shells","authors":"Yulistya Vidyaning Maulidya","doi":"10.20527/jstk.v16i2.12136","DOIUrl":"https://doi.org/10.20527/jstk.v16i2.12136","url":null,"abstract":"Leachate waste from piles of garbage in the landfill (TPA) has a high concentration of Chemical Oxygen Demand (COD). High COD concentrations can cause a decrease in dissolved oxygen concentrations in the waters. Simple leachate treatment is carried out using the adsorption method with adsorbents derived from food waste. This research used Precipitated Calcium Carbonate (PCC) adsorbent from ale-ale shells. This study aims to evaluate the effect of particle size and calcination temperature variations on PCC yield and analyze the adsorption ability of PCC adsorbents in reducing COD concentrations. In addition, PCC was characterized using an infrared spectrophotometer (FTIR) and an X-ray diffractometer (XRD). Determination of COD concentration was carried out by permanganometric titration. The optimum PCC yield of 57.75% was obtained from Ale-ale shells with a particle size of 40 mesh with a calcination temperature of 800 ° C. The functional groups in PCC are C-O at wave numbers 1403 cm -1 , 873 cm -1 , and 713 cm -1 . XRD characterization showed the presence of a calcite phase with a high peak intensity at 2 𝜃 = 29.38 ° . The adsorption of organic matter on leachate by PCC (4.5 g/50 mL) with a stirring speed of 200 rpm for 240 minutes reduced the COD concentration of leachate from 1131.28 mg/L to 456.94 mg/L with an adsorption efficiency of 59.61%.","PeriodicalId":17766,"journal":{"name":"Jurnal Sains dan Terapan Kimia","volume":"107 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88953332","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":"Three Dimension Structure Modeling of The Superoxide Dismutase (SOD) of Rice (Oryza sativa) Using Fold Recognition Method Using Phyre2 Web Server","authors":"N. Komari","doi":"10.20527/jstk.v16i2.11682","DOIUrl":"https://doi.org/10.20527/jstk.v16i2.11682","url":null,"abstract":"","PeriodicalId":17766,"journal":{"name":"Jurnal Sains dan Terapan Kimia","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90270045","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":"Characteristics and Chemical Composition of Fly Ash From Pulang Pisau’s Power Plant as A Potential Material for Synthesis of Aluminosilicate Materials","authors":"R. M. Iqbal, Akhmad Damsyik, Retno Agnestisia, Siswo Siswo","doi":"10.20527/jstk.v16i2.12191","DOIUrl":"https://doi.org/10.20527/jstk.v16i2.12191","url":null,"abstract":"The Steam-Electric Power Station (PLTU) is one of the initiatives to meet the nation's current electricity requirements. The use of fuel for steam power plant is still dominated by fossil fuels such as coal. Even though domestic energy needs are met, steam power plant turns out to be a contributor to gas emissions that cause global warming, as well as a by-product in the form of fly ash which can cause environmental and ecosystem problems. Fly ash contains silica oxide (SiO 2 ) and aluminum oxide (Al 2 O 3 ) compounds which can be used as raw materials for synthesizing aluminosilicate-based materials such as geopolymers and zeolites. This study tested the characteristics and composition of chemical compounds in fly ash from Pulang Pisau’s power plant, Central Kalimantan. Characterization using X-Ray Diffraction (XRD) showed that peaks of quartz material dominated fly ash from Pulang Pisau’s power plant at 2θ=20.82°;26.61° and mullite minerals at 2θ= 31.2°;33.1°; 35.4°;39.2°;59.8°. The results of the chemical compound composition were tested using the ASTM-D3682-12 standard. Fly ash has a composition of 29.00% SiO 2 , 9.98% Al 2 O 3 , 13.75% Fe 2 O 3 , and 28.37% CaO. Fly ash from Pulang Pisau’s power plant is classified as type C fly ash, which can potentially be used as a source of aluminosilicate-based material synthesis. Characteristics and Chemical Composition...","PeriodicalId":17766,"journal":{"name":"Jurnal Sains dan Terapan Kimia","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81605340","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}