Treatment and Utilization of Industrial Tofu Waste in Indonesia

Faisal, Muhammad; Gani, Asri; Mulana, Farid; Daimon, Hiroyuki

doi:10.14233/ajchem.2016.19372

Cited by 74 publications

(57 citation statements)

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“…Generally, the concentration of hydrogen ion and M-alkalinity play an important role in the biological processes 10 . Changes in M-alkalinity and pH during the anaerobic fermentation process at laboratory scale need to be compared with at pilot scale as shown in Fig.-4 and 5.…”

Section: Changes In M-alkalinity and Ph At Laboratory Scale And Pilotmentioning

confidence: 99%

"Production of Biogas From Palm Oil Mill Effluent: From Laboratory Scale to Pilot Scale"

2018

RJC

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An anaerobic closed system using a pilot-scale digester tank has been developed in recent years at Universit as Sumatera Utara. The system was built for the purpose of producing biogas from the fermentation process of palm oil industry effluent obtained from a wastewater treatment plant of the palm oil mills owned by Sisirau Mill. The digester tank used was a reactor with the type of continuous stirred tank reactor has a volume of 3,000 liters equipped with electrical heaters, insulators, and baffles in it. Feed input was performed intermittently so that the operation occurred continuously. In this research, a series of experiments at pilot scale were conducted with 616 liters palm oil mill effluent/day feed rate, the temperature of feed tank 70 o C, digester tank temperature of 55 o C, stirring rate of 37.5 rpm, and six days of hydraulic retention time. The results were compared to the results of laboratory scale, under the same condition and same POME. Based on the results, fermentation process at laboratory scale showed the better performance than at pilot scale. Therefore, the process should be improved in order to be scaled up to the higher scale.

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Section: Changes In M-alkalinity and Ph At Laboratory Scale And Pilotmentioning

confidence: 99%

"Production of Biogas From Palm Oil Mill Effluent: From Laboratory Scale to Pilot Scale"

2018

RJC

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“…However, these soybean processing industries are considered to be inefficient; not only has there been a reduction in productivity, but the processes employed are considered to be environmentally damaging (Ridha, 2015). According to Faisal, Gani, Mulana, & Daimon (2016), tofu wastewater contains high levels of BOD and COD in the range of 6,000-8,000 mg/L and 7,500-14,000 mg/L, respectively. The level of organic substances is still high at above 500 mg/L, even after the wastewater has been treated (Faisal et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…According to Faisal, Gani, Mulana, & Daimon (2016), tofu wastewater contains high levels of BOD and COD in the range of 6,000-8,000 mg/L and 7,500-14,000 mg/L, respectively. The level of organic substances is still high at above 500 mg/L, even after the wastewater has been treated (Faisal et al, 2016). The Government of Salatiga (2012) is aware that these tofu industries are polluting the environment, although the data have not yet been provided, and the government has tried to support some of the tofu industries by providing biogas installations in Tingkir and Banyuputih, and constructed Wastewater Treatment Plant in Banyuputih.…”

Section: Introductionmentioning

confidence: 99%

Environmental Analysis of Tofu Production in the Context of Cleaner Production: Case Study of Tofu Household Industries in Salatiga, Indonesia

Nugroho¹,

Sulistyaningrum²,

Melania³

et al. 2019

jessd

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Tofu is a soy-based food that is frequently consumed by Indonesian as a protein source. It is usually produced by household industries using traditional technology, which currently experiencing environmental problems with respect to the inefficiency of resource usage and inadequate waste disposal. Therefore, cleaner production strategy is potential to be implemented by previously mapping the current problems faced by the industries. This study aims to present an environmental analysis on tofu production in Salatiga in the context of cleaner production. In addition to provides information about the current production process and explains waste management performed by the industries, this study describes how the people in Kalitaman-Salatiga consider environmental issue around the tofu production. This study was conducted by a qualitative approach using interview, observation, and documentation. Laboratory analysis was conducted to provide supporting data. The results showed that only a small proportion of the tofu production process in Kalitaman meets the indicators for cleaner production in term of using raw materials efficiently and reusing solid wastes. Wastes in the form of smoke and wastewater are still disposed without prior treatment. The BOD5, COD, and TSS contents of tofu wastewater exceed the quality standard set by the Indonesian government. Although the respondents understand the negative impact of pollution to ecosystem, they are not yet concerned because it does not show a direct detrimental impact on their community. Therefore, raising environmental awareness is required in order to protect the ecosystem and to prevent environmental deterioration.

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“…Small tofu processing industries usually dispose of their waste into the sewage system and do not go through appropriate processing [1], [2]. Some researchers have utilized liquid waste from the tofu industry as sources of methane and hydrogen gas [3], [4] by biological degradation (anaerobic process). After going through an anaerobic process, tofu liquid waste still contains mixed cultures of bacteria and organic matter.…”

Section: Introductionmentioning

confidence: 99%

“…After going through an anaerobic process, tofu liquid waste still contains mixed cultures of bacteria and organic matter. In previous research, Faisal et al [4] used a thermophilic stirred anaerobic (TSA) reactor to process tofu liquid waste. The chemical oxygen demand value of the waste generated by the TSA process was in the order of 1900-2000 mg/L.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Tofu Liquid Waste Generated From Anaerobic Processing in Compost Preparation

Faisal¹

2017

GEOMATE

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This study aims to identify the ability of tofu liquid waste generated from anaerobic processing to act as a microorganism source to help expedite compost decomposition. In this research, composting was performed on 2 kg of rice husks to which tofu liquid waste was added in various volumes (500-2000 mL) and 1 kg of cow manure. This research used a nonfactorial completely randomized design with five treatments and four repetitions, which made a total of 20 unit trials. Changes in pH, humidity (rH), C composition, N, C/N ratio, and number of colonies were analyzed to observe the compost quality. The data collected were then analyzed using SPSS 16. The research findings showed that increasing the volume of tofu liquid waste has a significant impact on composting temperature, and all compost outputs were within proper compost criteria. Increasing tofu waste volume can improve the population of microorganisms, which accelerated the decomposition process of organic matter. The highest number of bacterial colonies, 73 colony forming units, was found on 1500-mL treatment. At this condition the values obtained were 17.94%, 0.9%, and 20.1 for C, N, and C/N ratio, respectively.

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Treatment and Utilization of Industrial Tofu Waste in Indonesia

Cited by 74 publications

References 0 publications

"Production of Biogas From Palm Oil Mill Effluent: From Laboratory Scale to Pilot Scale"

"Production of Biogas From Palm Oil Mill Effluent: From Laboratory Scale to Pilot Scale"

Environmental Analysis of Tofu Production in the Context of Cleaner Production: Case Study of Tofu Household Industries in Salatiga, Indonesia

Utilization of Tofu Liquid Waste Generated From Anaerobic Processing in Compost Preparation

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