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All Journal Jurnal Bahan Alam Terbarukan KOVALEN: Jurnal Riset Kimia Jurnal Kimia Riset Wikrama Parahita : Jurnal Pengabdian Masyarakat FLUIDA Indonesian Journal of Chemical Analysis (IJCA) J-Dinamika: Jurnal Pengabdian Kepada Masyarakat Industrial Research Workshop and National Seminar
Nancy Siti Djenar
Jurusan Teknik Kimia, Politeknik Negeri Bandung
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Journal : FLUIDA

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Penyisihan Kadar Amoniak dalam Limbah Cair Industri Pupuk Menggunakan Sequencing Batch Reactor Robby Sudarman; Herawati Budiastuti; Nancy Siti Djenar; Efniarsi S. Panggalo; Ajie Nurhasyim
Fluida Vol 13 No 2 (2020): FLUIDA
Publisher : Jurusan Teknik Kimia, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v13i2.2264

Abstract

ABSTRAK Sifat toksik nitrogen amoniak dalam limbah cair berbahaya bagi kehidupan sehingga perlu untuk dihilangkan. Pada penelitian ini penyisihan kadar amoniak yang tinggi dalam limbah cair industri pupuk dilakukan melalui proses nitrifikasi dan denitrifikasi menggunakan Sequencing Batch Reactor (SBR). Dua reaktor SBR digunakan dimana pada reaktor pertama (R1) dilakukan pengadukan dan pada reaktor kedua (R2) dilakukan aerasi. Hasil penelitian menunjukkan bahwa pada pembebanan 0,787 mg amoniak/L/hari dan Hydraulic Retention Time (HRT) 20 hari, efisiensi penyisihan kadar amoniak mampu dicapai pada kisaran 71,26%-90,91% (R1) dan 62,32% -92,21% (R2). Pengukuran pH pada HRT 20 hari berada pada rentang 8,25-8,65 pada R1 dan pH 8,34-8,73 pada R2. Pada HRT 15 hari, efisiensi penyisihan kadar amoniak efluen pada R1 menurun yaitu dari 90,89 % menjadi 86,81% dan pada R2 menurun dari 90,59% menjadi 40,99 %. Pada HRT 15 hari, efisiensi penyisihan kadar amoniak pada R1 lebih baik dibandingkan pada R2 yang disebabkan adanya penambahan aerasi pada R1 di akhir penelitian. Kata kunci: amoniak, limbah cair, industri pupuk, sequencing batch reactor ABSTRACT The toxic nature of ammonia nitrogen in liquid waste is dangerous for life, so it needs to be eliminated. In this study, the removal of high ammonia levels in the fertilizer industry wastewater was carried out through a process of nitrification and denitrification using the Sequencing Batch Reactor (SBR). Two SBR reactors were used where the first reactor (R1) was stirred and the second reactor (R2) was aerated. The results showed that at a load of 0.787 mg of ammonia/L/day and 20 days of Hydraulic Retention Time (HRT), the efficiencies of removal of ammonia levels were achieved in the range of 71.26%-90.91% (R1) and 62.32%- 92.21% (R2). The pH measurements at 20 days of HRT were in the range of 8.25-8.65 at R1 and pH 8.34-8.73 at R2. At 15 days of HRT, the effluent ammonia level removal efficiency at R1 decreased from 90.89% to 86.81% and at R2 decreased from 90.59% to 40.99%. At 15 days of HRT, the efficiency of ammonia level removal at R1 was better than that in R2 due to the addition of aeration to R1 at the end of the study. Keywords: ammonia, liquid waste, fertilizer industry, sequencing batch reactor
Pengaruh Konsentrasi Gliserol dalam Edible Coating Tepung Biji Nangka dengan Penambahan Plasticizer Gliserol Emmanuela Maria Widyanti; Nancy Siti Djenar; Ari Marlina; Endang Widiastuti; Irwan Hidayatulloh; Intan Puspitarini; Dhara Firdausa; Lidya Elizabeth
Fluida Vol 15 No 2 (2022): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v15i2.4419

Abstract

Tomatoes are horticultural plants that are easily damaged, need to be coated with a food grade edible coating. The basic ingredients that can be used are polysaccharides, derived from jackfruit seed flour, then glycerol plasticizer is added to improve the brittle nature of the edible coating. The maximum glycerol added was carried out with the following concentration variations: control (without glycerol), 1.5%, 2.0%, 2.5%. The analysis carried out included testing the respiration rate and weight loss in tomato storage for 6 days. In determining the respiration rate, an experiment was carried out by flowing 1 L/minute of air for 2 minutes which had been passed through a saturated Ca(OH)2 solution flowed into a jar containing tomatoes, passing through a 0.05 N NaOH solution added 0.1% phenophthalein indicator and titrated with HCl 0.05 N until the red color disappears and the weight loss decreases on tomatoes coated with edible coating. The results obtained were the lowest decrease in respiration rate at 2% glycerol concentration of 0.137 mgCO2/kg.hour and the lowest decrease in weight loss at 2.5% glycerol concentration of 1.913%.
Co-Authors Ajie Nurhasyim Ari Marlina Army Adi Sutanningsih Astrinida Rizkina Dwi Pancani Dhara Firdausa Edi Wahyu Sri Mulyono Efniarsi S. Panggalo Elizabeth, Lidya Erina Putri Fauzi Abdilah Geraldy Andreas Sitepu Herawati Budiastuti Hidayatulloh, Irwan Intan Puspitarini Lili Indrawati Mentik Hulupi Nisa Siti Nursaadah Nurcahyo, Nurcahyo Permanasari, Ayu Ratna Riniati Robby Sudarman Setyaningrum, Sinta Shalihatunnisa Shalihatunnisa Siti Fauziah Sudrajat Harris Abdulloh Suryadi, Joko Troskialina, Lina Utary Nur Rachmani Fauzan Widiastuti, Endang Widyabudiningsih, Dewi Widyanti, Emmanuela Maria Yulistiani, Fitria Yuni Kustiar Yurikke Julieta Permata Putri Sunarya Yusuf Sofyan