Cleaner production analysis of tofu small scale enterprise

Septifani, Riska; Suhartini, Sri; Perdana, I J

doi:10.1088/1755-1315/733/1/012055

Cited by 6 publications

(5 citation statements)

References 5 publications

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“…The ammonia removal efficiency in this study was higher than Rajput and Khambete due to the microalgae used in the research. Microalgae use ammonia for photosynthesis with the help of sunlight so that they can increase their biomass [32]. Ammonia removal efficiency in this study was lower than Setiyawan et al [27] because the MBBR used a contact time of seven days and the bio carrier used had a wider surface than Kaldness 1 (K1).…”

Section: Influence On Time Stabili-zation and Number Of Cycles On Con...mentioning

confidence: 63%

Application of Sequencing Batch Biofilm Reactor (SBBR) Using Microalgae Chorella sp. to Removal Nutrient in Grey Water

Elystia

Andrio

2023

J. Tek. Kim. Ling

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Grey water contains organic matter that is directly disposed to the environment without any treatment previously, will cause pollution and impacting life in the water. Treatment that can be done is using microorganisms. One of its kind is the microalgae Chlorella sp. which utilizes organic matter as a source of nutrients for its growth. In this study, the Kaldness 1 (K1) bio carrier was added as a medium for attaching microorganisms using the Sequencing Batch Biofilm Reactor (SBBR) process. The research objectives were (1) to know the maximum number of Chlorella sp. both attached and suspended in the Sequencing Batch Biofilm Reactor (SBBR), (2) to obtain the best cycle time and stabilization time in the removal of COD, Ammonia, and MLSS in grey water. The research was conducted by varying the stabilization time (1.5; 2 and 2.5 hours) in each cycle for four cycles with a constant variation of charging time 30 minutes, reaction 120 minutes, 45 minutes, separation 45 minutes, and carried out with four cycles, stirring speed at 60 rpm, the concentration of algae suspension in SBBR was 25% and the volume of Kaldness K1 medium was 20%. The results showed the number of microalgae cells Chlorella sp. was suspended and attached to 1.85 x 106 and 1.46 x 106 cells/ml. The best removal of COD, ammonia, and MLSS was found in the stabilization time variation of 1.5 hours in 4 cycles with a removal efficiency of 84% and 76%, respectively, and an increase in the concentration of suspended and attached MLSS by 4780 mg/l and 4720 mg/l. It can be concluded that the faster stabilization time, the more removal efficient will be.

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Section: Influence On Time Stabili-zation and Number Of Cycles On Con...mentioning

confidence: 63%

Application of Sequencing Batch Biofilm Reactor (SBBR) Using Microalgae Chorella sp. to Removal Nutrient in Grey Water

Elystia

Andrio

2023

J. Tek. Kim. Ling

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“…The input-output flow in the tofu production process is used to calculate the total flow of components that enter and leave the production process. The amount of material that enters will be equal to the amount of material that goes out [11]. The input-output in the tofu production process can be seen in Figure 2.…”

Section: Input-output Tofu Production Processmentioning

confidence: 99%

Analysis of Global Warming Potential in Tofu Industry (Case Study: Industry X, Gresik)

Rahmawati

Auvaria

Nengse

et al. 2022

JSE

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Tofu industry is one of the many SMEs operating in Indonesia. These industrial activities have the potential to have an impact on the environment. Industry X, Gresik has an average production capacity of 600-900 kg of tofu every day. The main energy used to produce tofu is firewood. The average daily use of firewood in this industry is 1,520 kg. Burning wood has the potential to cause global warming. In addition, this industry also does not manage its liquid waste which has the potential to cause pollution in aquatic ecosystems. The purpose of this research is to analyze the potential environmental impact of the tofu production process. Data collection methods include observation, interviews, and direct measurement. Data analysis using Life Cycle Assessment method and SimaPro 9.4 Software. Environmental impact assessment using the CML-IA (baseline) method. Based on the results of Simapro analysis, the global warming potential impact is 2,95 x 108 kgCO2-eq

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“…In addition, these industries are located in the middle of residential areas. This issue should focus on developing local tofu agroindustry (Septifani et al, 2021(Septifani et al, , 2018. The local government must cooperate with various parties, including academics and practitioners, to deal with the negative impact on the environment (Sintawardani et al, 2022).…”

Section: Environmental Issue Regarding Tofu Agroindustrymentioning

confidence: 99%

The Profile of Local Tofu Industry in Trenggalek Regency, East Java Province, Indonesia

Lisanty

Sidhi

Pamujiati

2022

Hexagro

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A study was aimed to determine the costs, revenues, and profits of the tofu industry in Nglongsor Village, Karangan District, Trenggalek Regency in one production period. The location was determined intentionally. The sampling method used was saturated sampling or census. The reason for choosing the area was because it is a well-known and distinctive tofu-producing area in Trenggalek. The results showed that the average value of soybean raw materials was 42 kilograms at the price of soybeans of IDR 8,500 per kilogram, producing 400 packs of tofu. The selling price of tofu per pack of 2 (or four pieces) of IDR 2,000. In one production period, the revenue earned was IDR800,000. With an average total production cost of IDR518,786, the profit earned was IDR 218.822. The value of the R/C Ratio was 1.38, which means that the tofu home industry business was declared feasible to be developed. The statistical tests for the profit and business feasibility variables stated that the research hypothesis was accepted.

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Cleaner production analysis of tofu small scale enterprise

Cited by 6 publications

References 5 publications

Application of Sequencing Batch Biofilm Reactor (SBBR) Using Microalgae Chorella sp. to Removal Nutrient in Grey Water

Application of Sequencing Batch Biofilm Reactor (SBBR) Using Microalgae Chorella sp. to Removal Nutrient in Grey Water

Analysis of Global Warming Potential in Tofu Industry (Case Study: Industry X, Gresik)

The Profile of Local Tofu Industry in Trenggalek Regency, East Java Province, Indonesia

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