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Efektivitas Biji Kelor sebagai Koagulan Alami pada Pengolahan Limbah Cair Tahu Melalui Proses Anaerobik-Aerobik Laily Isna Ramadhani; Yurike Dwiayu Rahmaningsi; Nanda Ravenia Amanda; Herawati Budiastuti
Fluida Vol 13 No 1 (2020): FLUIDA
Publisher : Jurusan Teknik Kimia, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v13i1.2060

ABSTRAK Limbah cair tahu merupakan salah satu limbah cair dengan kandungan organik yang tinggi dan berpotensi merusak lingkungan. Pada penelitian ini digunakan dua metode pengolahan dengan mengkombinasikan metode pengolahan biologi dan proses koagulasi-flokulasi menggunakan koagulan alami, biji kelor. Tujuan dari penelitian ini adalah mempelajari pengaruh dosis dan ukuran partikel koagulan terbaik. Dosis biji kelor divariasikan dari 1.000, 2.000, 3.000, dan 4.000 ppm. Dosis terbaik digunakan untuk menentukan ukuran partikel koagulan terbaik dengan variasi ukuran 250, 500, 1.000, dan 2.000 µm. Hasil penelitian menunjukkan bahwa dosis biji kelor terbaik untuk metode 1 (aerobik dan koagulasi flokulasi) adalah 2.000 ppm dan untuk metode 2 (kombinasi anaerobik-aerobik dan koagulasi flokulasi) adalah 4.000 ppm. Ukuran partikel terbaik yaitu 500 µm untuk kedua metode dengan efisiensi penurunan kekeruhan sebesar 94,57% untuk efluen metode 1 dan 78,28% untuk efluen metode 2. Kata kunci: Limbah cair tahu, biji kelor,koagulan alami, koagulasi- flokulasi ABSTRACT Tofu wastewater is one of the pollutant wastewater that potentially cause the serious damage to the environment due to its high organic content. The combination of biology method in the help of microorganism and coagulation-flocculation method using kelor seed were applied in this study. This research aims were determining the best dose and the optimum size of coagulant. Doses variation were 1,000, 2,000, 3,000 and 4,000 ppm of coagulant. The best dose resulted would be used to determine the optimum size of coagulant by variating 250, 500, 1,000 and 2,000 µm. The result showed that 2,000 ppm was the best coagulant dose for the first method (aerobic and coagulation-flocculation method) and 4,000 ppm was the optimum dose for the second method (combination of anaerobic-aerobic and coagulation-flocculation method). 500 µm was determined as the optimum particle size of the coagulant for both methods with % removal turbidity level were 94,57% for the first method and 78,28% for the second method. Keywords:Tofu wastewater, kelor seed, natural coagulant, coagulation-flocculation

Formulasi Obat Kumur Ekstrak Daun Leunca (Solanum nigrum L.) dan Uji Aktivitasnya Terhadap Streptococcus mutans Vini Ivania Pardeny; Affifah Asri Afiani; Alyanissa Nurfadiya; Sabinna Azahra Suleman; Laily Isna Ramadhani
Fluida Vol 15 No 1 (2022): FLUIDA
Publisher : Jurusan Teknik Kimia, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v15i1.3507

ABSTRAK Kesehatan mulut yang terjaga dapat membantu terhindar dari berbagai penyakit. Salah satunya menghindari karies gigi yang disebabkan oleh bakteri Streptococcus mutans. Daun leunca memiliki kandungan antibakteri dan antiinflamasi seperti alkaloid, flavonoid, fenol, saponin, tanin dan minyak atsiri. Penelitian ini bertujuan untuk memformulasikan ekstrak daun leunca (Solanum nigrum L.) sebagai bahan dasar pembuatan obat kumur herbal serta menguji stabilitas fisiknya. Ekstrak daun leunca diperoleh dari proses ekstraksi maserasi dengan etanol 96%. Obat kumur dibuat dalam 3 formula yaitu F1, F2 dan F3 dengan memvariasikan konsentrasi ekstrak daun leunca sebanyak 1,5%, 2%, dan 3% lalu dievaluasi fisik meliputi uji organoleptis, uji pH, uji viskositas, dan uji antibakteri terhadap Streptococcus mutans. Diperoleh formulasi obat kumur terbaik pada F3 setelah pengujian selama 4 minggu memiliki stabilitas fisik yang baik, serta paling efektif sebagai antibakteri dibandingkan dengan F1, F2 dan obat kumur komersial. ABSTRACT The healthy and clean mouth is very important to avoid any diseases infection. One of them is preventing the dental caries caused by Streptococcus mutans bacteria. Leunca leaves have antibacterial and anti-inflammatory contents such as alkaloids, flavonoids, phenols, saponins, tannins and essential oils. This research aims to formulate leunca leaf extract (Solanum nigrum L.) as the basic ingredient in the making of herbal mouthwashes with its physical stability were being tested. The leunca leaf extract was obtained from the extraction process of maceration with 96% ethanol. The herbal mouthwash was made in 3 formulas namely F1, F2 and F3 by varying the concentration of leunca leaf extract from 1.5%, 2%, and 3% then to be evaluated physically including organoleptis test, pH test, viscosity test, and antibacterial test against Streptococcus mutans. The best mouthwash formulation was obtained as F3 which has the good physical stability testing after 4 weeks, and being the most effective antibacterial formula compared to F1, F2 and the commercial mouthwash.

Formulasi Obat Kumur Ekstrak Daun Leunca (Solanum nigrum L.) dan Uji Aktivitasnya Terhadap Streptococcus mutans Vini Ivania Pardeny; Affifah Asri Afiani; Alyanissa Nurfadiya; Sabinna Azahra Suleman; Laily Isna Ramadhani
Fluida Vol 15 No 1 (2022): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v15i1.3507

ABSTRAK Kesehatan mulut yang terjaga dapat membantu terhindar dari berbagai penyakit. Salah satunya menghindari karies gigi yang disebabkan oleh bakteri Streptococcus mutans. Daun leunca memiliki kandungan antibakteri dan antiinflamasi seperti alkaloid, flavonoid, fenol, saponin, tanin dan minyak atsiri. Penelitian ini bertujuan untuk memformulasikan ekstrak daun leunca (Solanum nigrum L.) sebagai bahan dasar pembuatan obat kumur herbal serta menguji stabilitas fisiknya. Ekstrak daun leunca diperoleh dari proses ekstraksi maserasi dengan etanol 96%. Obat kumur dibuat dalam 3 formula yaitu F1, F2 dan F3 dengan memvariasikan konsentrasi ekstrak daun leunca sebanyak 1,5%, 2%, dan 3% lalu dievaluasi fisik meliputi uji organoleptis, uji pH, uji viskositas, dan uji antibakteri terhadap Streptococcus mutans. Diperoleh formulasi obat kumur terbaik pada F3 setelah pengujian selama 4 minggu memiliki stabilitas fisik yang baik, serta paling efektif sebagai antibakteri dibandingkan dengan F1, F2 dan obat kumur komersial. ABSTRACT The healthy and clean mouth is very important to avoid any diseases infection. One of them is preventing the dental caries caused by Streptococcus mutans bacteria. Leunca leaves have antibacterial and anti-inflammatory contents such as alkaloids, flavonoids, phenols, saponins, tannins and essential oils. This research aims to formulate leunca leaf extract (Solanum nigrum L.) as the basic ingredient in the making of herbal mouthwashes with its physical stability were being tested. The leunca leaf extract was obtained from the extraction process of maceration with 96% ethanol. The herbal mouthwash was made in 3 formulas namely F1, F2 and F3 by varying the concentration of leunca leaf extract from 1.5%, 2%, and 3% then to be evaluated physically including organoleptis test, pH test, viscosity test, and antibacterial test against Streptococcus mutans. The best mouthwash formulation was obtained as F3 which has the good physical stability testing after 4 weeks, and being the most effective antibacterial formula compared to F1, F2 and the commercial mouthwash.

Seeding and Acclimatization for Aerobic Processing of Restaurant Wastewater with Sequencing Batch Reactor Herawati Budiastuti; Laily Isna Ramadhani; Sudrajat Harris Abdulloh; Ananda Dea Maharani; Melina Melina; Robby Sudarman
Fluida Vol 16 No 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4521

Restaurant wastewater has a relatively high organic matter content, so it needs to be treated to meet the specified quality standard. One of the technologies that can be used in restaurant wastewater treatment is Sequencing Batch Reactor (SBR) technology. The purpose of this study is to set up an aerobic SBR system with seeding and acclimatization treatments to reduce the amount of organic matter in restaurant wastewater when a shock load occurs. The research was done using wastewater from a restaurant in Bandung and activated sludge from the food industry in Bogor as seeds for microorganisms. In this study, the seeding process was carried out by introducing 25% activated sludge and 75% nutrients into the reactor, and the acclimatization process was carried out by introducing a specific ratio of nutrients and wastewater into the reactor gradually until the waste concentration reached 100%. The parameters tested were COD, MLVSS, DO, pH, and temperature. During the seeding procedure, the initial COD value of 3,200 mg/L declined. It began to stabilize on the seventh day, with a COD value of 1,080 mg/L. The COD removal reached a relatively stable condition in the acclimatization process starting on day 2, where COD decreased from the original 1,280 mg/L to 480 mg/L.

Enhancing Tofu Wastewater Treatment Efficiency with Water Hyacinth Extract Addition in an Anaerobic Sequencing Batch Reactor Ramadhani, Laily Isna; Nabila, Salma Ainun; Angela, Santa; Budiastuti, Herawati
Fluida Vol. 18 No. 1 (2025): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v18i1.6164

Tofu production results in wastewater containing high levels of organic matter. This wastewater needs to be treated before discharging into water bodies. Anaerobic wastewater treatment is capable to decompose organic compounds in wastewater and can produce biogas. Tofu wastewater has a low C/N ratio (6.51), so it needs to be increased by adding water hyacinth extract. The reactor used is an Anaerobic Sequencing Batch Reactor (ASBR) with cow rumen extract as a starter at a concentration of 7,995 mg MLVSS/L. The concentration of tofu wastewater used was 6,000 mgCOD/L, and water hyacinth extract was added at a concentration ratio of 15:2. This research aims to determine the reduction in COD and cumulative biogas volume gain during tofu wastewater treatment with the addition of water hyacinth extract. The parameters tested in the research were MLVSS, COD, pH, and cumulative biogas volume. The efficiency of reducing COD concentration at the operational stage with adding water hyacinth extract was 87.5%, while the reduction in COD concentration without adding water hyacinth extract was only 56.25%. The cumulative volume of biogas produced for 9 days of operation was 7,300 mL, while the ASBR operation without adding water hyacinth extract was 9,590 mL for 9 days.

Effect of Water Hyacinthâ€™s Particle Size as Additional Substrate to the Leachate Anaerobic Bioreactor Ramadhani, Laily Isna; Widyabudiningsih, Dewi; Wirawan, Feri; Almarnugraha, Aditya; Setyaningrum, Sinta
Fluida Vol. 17 No. 1 (2024): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v17i1.5503

Municipal solid waste leachate contains landfill-produced organic contaminants. Leachate with the high organic content pottentially pollute nearby waterways. The high content of pollutants in leachate is represented by the measured Chemical Oxygen Demand (COD) content. Therefore, leachate was carried out using the anaerobic method. The anaerobic approach was chosen because it can process high-organic waste and produce biogas, in which methane in biogas may be used as renewable energy. Leachate from old landfills is heavy in nitrogen, thus to optimize the anaerobic process, it must be mixed with high-carbon substrates. Water hyacinth, a fast-growing plant with a high carbon content, is a weed because it pottentially damage the ecosystem. This research begins by comparing the anaerobic reactor with a single substrate of leachate and a mixed substrate (leachate and water hyacinth). Water hyacinth was added with size variations of 1 mm; 5 mm; 10 mm; and 15 mm. From the four variations, the mixed substrate reactor had a higher COD reduction efficiency than the single substrate in all water hyacinth sizes. The optimum particle size of water hyacinth is 1 mm, resulted the highest COD reduction efficiency of 81% and the highest biogas cummulative volume of 4,230 mL. The addition of water hyacinth as an additional substrate statisticaly proven has a strong correlation to the increasing efficiency of COD removal compared to the biogas production.

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