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Pemanfaatan Koagulan Biji Asam Jawa Guna Memperbaiki Parameter BOD, COD, dan TSS Limbah Cair Industri Tahu Andi Mohamad Yusuf; Ratnaningsih Ruhiyat; Rositayanti Hadisoebroto
Jurnal Ekologi, Masyarakat dan Sains Vol 3 No 2 (2022): Jul-Des 2022
Publisher : ECOTAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55448/ems.v3i2.66

The purpose of this study was to determine the effectiveness of tamarind seeds in removing pollutant parameters in tofu wastewater produced in the process of making tofu. The parameters to be reduced are BOD, COD, TSS, and turbidity. Variations in coagulant doses used in this study were: 2g/L, 3g/L, 4g/L, and 5g/L. With a coagulation speed of 200 rpm for 3 minutes and a flocculation speed of 120 rpm for 14 minutes with a settling time of 60 minutes. The results showed that tamarind seeds were able to reduce BOD, COD, TSS, and turbidity at a dose of 4 g/L with a pH of 8. The results showed a decrease in turbidity parameters with an initial value of 950 NTU to 151 NTU with an efficiency of 84% removal, TSS parameter with initial value of 662 mg/L becomes 143 mg/L with 78% removal efficiency, COD parameter with initial value of 2987 mg/L becomes 533 mg/L with 82% removal efficiency, and BOD parameter with initial value of 1994 mg/L to 361 mg/L with a removal efficiency of 82%. These results indicate that COD and BOD are still above the quality standards set by the government and further research is needed.

THE EFFECT OF ADDING TOFU WASTE TO HYDROPONIC MEDIA ON THE GROWTH OF KANGKUNG (IPOMOEA AQUATICA) Etty Indrawati; Abdul Chalim; Ratnaningsih Rukhiat; Olivia Seanders; Eko Adhy Setiawan; Agus Purniawan
Journal of Synergy Landscape Vol. 2 No. 2 (2023): Vol 2, No 2, February 2023
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/tjsl.v2i2.16255

A team of lecturers from the Department of Environmental Engineering has researched waste treatment in quality, quantity, and operational terms in the tofu and tempeh industry and formulated a wastewater management model using appropriate and effective technology to support sustainable development. The results of processing tofu waste will be tested on vegetable plants with a hydroponic system. The problem is that the waste from the tofu industry pollutes the environment and is not utilized. This study aims to utilize liquid tofu waste as a hydroponic medium for vegetable plants. This research was carried out experimentally by making demonstration plots using a completely randomized design (CRD) method with three hydroponic media treatments and three replications. The three hydroponic media treatments were AB mix hydroponic media with the addition of 10% tofu waste which had been coagulated with moringa seed powder (Moringa oleifera); AB mix hydroponic media with the addition of 10% tofu waste which has been coagulated with tamarind seed powder (Tamarindus indica) and untreated AB mix hydroponic media. The plant growth factors to be measured are plant height and the number of leaves. The results showed that plant height and the number of leaves on Kangkung (water spinach, Ipomoea aquatica) treated with tofu waste, both coagulated moringa seed powder and tamarind seed powder, showed lower results than plants that were not treated. This can also be seen from the survival value of the treated Kangkung, which showed a value of 50% for the treatment of moringa seed powder and 67% for the treatment of tamarind seed powder. At the same time, the survival of the Kangkung plants that were not given treatment was 83%. It needs to be reviewed, especially from the BOD and COD values of tofu waste solution, which are very influential on the growth of vegetable plants. It is necessary to do research again by fulfilling the nutritional requirements needed by plants to grow and thrive.

Efektivitas Penguraian Sampah Organik Pasar Menggunakan Larva Black Soldier Fly Asri Triwandani; Pramiati Purwaningrum; Ratnaningsih Ruhiyat
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.6003

Organic waste dominates the waste sourced from the market so it needs to be processed before it goes to the TPA. Utilization of BSF larvae is an effort to process organic waste in reducing the volume of waste that will be disposed of in the TPA. The purpose of this study was to determine the ability of BSF larvae to reduce organic waste on the market. The composition of the type of waste used consisted of fruit, vegetable, food waste and mixtures (50% fruit waste: 40% vegetable waste: 10% food waste waste) with a variation of feeding rate of 40, 60 and 80 mg/larvae/day. The number of larvae included in each reactor was 4000 individuals (70 grams) using 5-day larvae (5-DOL) with a composting duration of 18 days. The results showed that BSF larvae were able to reduce organic waste under optimum pH conditions ranging from 7.5- 8.3 with an average temperature of around 31⁰C and humidity ranging from 56-88%. The reduction results obtained in this study were 78% for various vegetables with a feeding rate of 60 mg/larvae/day. The best results of laboratory analysis based on SNI 19-7030-2004 are mixed sample variations with a feeding rate of 80 mg/larvae/day which have a C-Organic content of 32.55%, a C/N ratio of 17%, a moisture content of 12.89%, N total 1.88%, P2O5 2.22% and K2O 2.68%.

Operasional Bank Sampah Dalam Meningkatkan Pengurangan Sampah di Kecamatan Duren Sawit Viery Ardiansyah; Pramiati Purwaningrum; Ratnaningsih Ruhiyat
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.6002

Waste Bank is one of the options to reduce solid waste in solid waste management. The planning purposes is to plan waste reduction through the Waste Bank with the 3R concept to support solid waste management in Duren Sawit District. The method used for sampling the generation rate and composition of waste in Duren Sawit Subdistrict is in accordance with SNI 19-3964-1994; making observations to obtain data on waste management at the Waste Bank; and conducting interviews both verbally and with questionnaires regarding community participation. Based on the results of the study, the waste generation rate in Duren Sawit District is 0.6 kg/person/day with a composition of 70% organic waste and 30% inorganic waste. The potential for waste recycling that can be done in Duren Sawit District is 27%. By the end of the planning year, the Waste Bank has the potential to reduce waste by 37% of waste generation. To achieve this reduction, the Waste Bank needs to improve services and community participation as customers and non�customers. The Waste Bank will be optimized in stages according to the percentage growth of Waste Bank customers in each kelurahan. In the first stage, the optimization of the Waste Bank is targeted to reach 50% of the total households in the Duren Sawit Sub-district. In long-term planning, the Waste Bank plays an important role in the aspect of waste management.

POTENTIAL OF BLACK SOLDIER FLY (BSF) IN REDUCING MUNICIPAL FOOD LOSS AND WASTE (FLW) AT TAMAN SARI DISTRICT, WEST JAKARTA Tasya Oemar; Pramiati Purwaningrum; Ratnaningsih Ruhiyat; Fitrio Ashardiono
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 6, NUMBER 2, OCTOBER 2023
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v6i2.16932

Black Soldier Fly (BSF) larvae are known to have the ability to process food loss and waste and reduce the weight of food loss and waste, by producing decomposition products that have beneficial values. Food loss and waste needs to be reduced to reduce the burden of waste entering the Final Disposal (TPA). Aim: The purpose of this study was to determine the ability of BSF larvae and to determine the quality of the decomposition results in processing food loss and waste in the Taman Sari District on a laboratory scale. Methodology and Results: Taman Sari Distrisct is a high dense populated area Total days of bioconversion activity is 12 days, giving back 1,000 grams of municipal waste organic, containing food loss and food waste, according to variation is given repeatedly on the 1st, 5th, and 8th days for each 12 sample code. The amount of 5 days old (5-DOL) maggot used for each sample code is 30 grams. Conclusion, significance, and impact study: The percentage reduction in processing from 3 kg of food loss and waste can reach 86% with the average residue produced in the form of 415.67 grams of solid compost and 221.7 grams of prepupa. Bred prepupa will evolve into several stages: pupa, fly, egg, baby larvae, and 5-DOL for 57 days on its life cycle.

Operasional Bank Sampah Dalam Meningkatkan Pengurangan Sampah di Kecamatan Duren Sawit Viery Ardiansyah; Pramiati Purwaningrum; Ratnaningsih Ruhiyat
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.6002

Waste Bank is one of the options to reduce solid waste in solid waste management. The planning purposes is to plan waste reduction through the Waste Bank with the 3R concept to support solid waste management in Duren Sawit District. The method used for sampling the generation rate and composition of waste in Duren Sawit Subdistrict is in accordance with SNI 19-3964-1994; making observations to obtain data on waste management at the Waste Bank; and conducting interviews both verbally and with questionnaires regarding community participation. Based on the results of the study, the waste generation rate in Duren Sawit District is 0.6 kg/person/day with a composition of 70% organic waste and 30% inorganic waste. The potential for waste recycling that can be done in Duren Sawit District is 27%. By the end of the planning year, the Waste Bank has the potential to reduce waste by 37% of waste generation. To achieve this reduction, the Waste Bank needs to improve services and community participation as customers and non�customers. The Waste Bank will be optimized in stages according to the percentage growth of Waste Bank customers in each kelurahan. In the first stage, the optimization of the Waste Bank is targeted to reach 50% of the total households in the Duren Sawit Sub-district. In long-term planning, the Waste Bank plays an important role in the aspect of waste management.

Efektivitas Penguraian Sampah Organik Pasar Menggunakan Larva Black Soldier Fly Asri Triwandani; Pramiati Purwaningrum; Ratnaningsih Ruhiyat
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.6003

Organic waste dominates the waste sourced from the market so it needs to be processed before it goes to the TPA. Utilization of BSF larvae is an effort to process organic waste in reducing the volume of waste that will be disposed of in the TPA. The purpose of this study was to determine the ability of BSF larvae to reduce organic waste on the market. The composition of the type of waste used consisted of fruit, vegetable, food waste and mixtures (50% fruit waste: 40% vegetable waste: 10% food waste waste) with a variation of feeding rate of 40, 60 and 80 mg/larvae/day. The number of larvae included in each reactor was 4000 individuals (70 grams) using 5-day larvae (5-DOL) with a composting duration of 18 days. The results showed that BSF larvae were able to reduce organic waste under optimum pH conditions ranging from 7.5- 8.3 with an average temperature of around 31⁰C and humidity ranging from 56-88%. The reduction results obtained in this study were 78% for various vegetables with a feeding rate of 60 mg/larvae/day. The best results of laboratory analysis based on SNI 19-7030-2004 are mixed sample variations with a feeding rate of 80 mg/larvae/day which have a C-Organic content of 32.55%, a C/N ratio of 17%, a moisture content of 12.89%, N total 1.88%, P2O5 2.22% and K2O 2.68%.

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