Characteristics of tofu whey degradation during self-sustaining batch anaerobic process for methane production

Wresta, Arini; Sintawardani, Neni; Adisasmito, Sanggono; Kurniawan, Tonni Agustiono; Setiadi, Tjandra

doi:10.1016/j.jece.2021.106359

Cited by 9 publications

(4 citation statements)

References 43 publications

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“…This technique for enriching and isolating electroactive bacteria from wastewater led to the discovery of new electroactive bacteria that could be efficiently used by the MFC to treat it. For this reason, a silica encapsulation on existing biofilm was studied for a rapid detection of the entrapped bacteria [70].…”

Section: Electrode Development For Enhancing Power Outputmentioning

confidence: 99%

Microbial Fuel Cells (MFC): A Potential Game-Changer in Renewable Energy Development

et al. 2022

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Currently, access to electricity in the cities of the Global South is so limited that electrification remains low in rural areas. Unless properly tackled, one-third of the world’s cities will suffer from energy scarcity. The emergence of microbial fuel cell (MFC) technology accelerates the deployment of decentralized and sustainable energy solutions that can address the looming energy shortage. This review consolidates scattered knowledge into one article about the performance of MFC in optimizing electricity generation from phosphorus (P)-laden wastewater, while removing the target nutrient from wastewater simultaneously. It is obvious from a literature survey of 108 published articles (1999–2022) that the applications of MFC for building a self-powered municipal water treatment system represents an important breakthrough, as this enables water treatment operators to generate electricity without affecting the atmospheric balance of CO2. Using a pyrite-based wetland MFC, about 91% of P was removed after operating 180 days, while generating power output of 48 A/m2. Unlike other techniques, MFCs utilize bacteria that act as micro-reactors and allow substrates to be oxidized completely. The Earth’s tiniest inhabitants can efficiently transform the chemical energy of organic matter in unused wastewater either into hydrogen gas or electricity. This facilitates wastewater treatment plants powering themselves in daily operation or selling electricity on the market. This MFC technology radically changes how to treat wastewater universally. By exploring this direction along the water–energy–food nexus, MFC technology could transform wastewater treatment plants into a key sustainability tool in the energy sector. This suggests that MFCs provide a practical solution that addresses the need of global society for clean water and electricity simultaneously.

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Section: Electrode Development For Enhancing Power Outputmentioning

confidence: 99%

Microbial Fuel Cells (MFC): A Potential Game-Changer in Renewable Energy Development

et al. 2022

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“…However, animal manure is not commonly used as a substrate for this reactor in full-scale applications and can be difficult due to low organic loads and high nitrogen concentrations [17,41,42]. This issue can be addressed by co-digesting animal manure with industrial wastewater and residues, such as tofu whey, a protein-rich residue resulting from the production of tofu, or wastewater from starch production [43,44]. In this way, industrial residues that have a low pH value, for example, and agricultural residues with high nitrogen contents, are made usable at the same time.…”

Section: Description Of the Entire Data Basis And The Operating Condi...mentioning

confidence: 99%

Anaerobic Digestion of Pig Slurry in Fixed-Bed and Expanded Granular Sludge Bed Reactors

et al. 2022

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Anaerobic digestion of animal manure is a potential bioenergy resource that avoids greenhouse gas emissions. However, the conventional approach is to use continuously stirred tank reactors (CSTRs) with hydraulic retention times (HRTs) of greater than 30 d. Reactors with biomass retention were investigated in this study in order to increase the efficiency of the digestion process. Filtered pig slurry was used as a substrate in an expanded granular sludge bed (EGSB) reactor and fixed-bed (FB) reactor. The highest degradation efficiency (ηCOD) and methane yield (MY) relative to the chemical oxygen demand (COD) were observed at the minimum loading rates, with MY = 262 L/kgCOD and ηCOD = 73% for the FB reactor and MY = 292 L/kgCOD and ηCOD = 76% for the EGSB reactor. The highest daily methane production rate (MPR) was observed at the maximum loading rate, with MPR = 3.00 m3/m3/d at HRT = 2 d for the FB reactor and MPR = 2.16 m3/m3/d at HRT = 3 d for the EGSB reactor. For both reactors, a reduction in HRT was possible compared to conventionally driven CSTRs, with the EGSB reactor offering a higher methane yield and production rate at a shorter HRT.

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“…This process leads to the generation of biogas, primarily composed of methane, which can be utilized as a renewable energy source. Additionally, anaerobic digestion effectively reduces the organic load of tofu wastewater, making it a promising method for sustainable wastewater management (Wresta et al, 2021). Aerobic treatment offers a reliable and energy-efficient approach for the remediation of tofu wastewater.…”

Section: Introductionmentioning

confidence: 99%

Advanced Treatment of Tofu Wastewater using Multilevel Filtration and TiO2 Photocatalysis as Promising Approach for Effective Wastewater Remediation

Adriansyah,

Marhadi,

Herawati

et al. 2023

J. Presipitasi

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Tofu production is known to generate large amounts of wastewater containing a variety of organic compounds, chemicals, and potentially hazardous substances. It is very important to apply proper treatment of harmful substances that impact this wastewater. The aim of this study is to explore advanced techniques for treating tofu wastewater by combining multilevel filtration and TiO2 photocatalysis methods. To evaluate the efficiency of the treatment process, influent and effluent parameters, including pH, total suspended solids (TSS), and chemical oxygen demand (COD), are carefully monitored and measured. The results clearly demonstrate the impressive removal efficiency achieved through the combined use of multilevel filtration and TiO2 photocatalysis in treating tofu wastewater. The treated wastewater showed a promising efficiency in pH (100%), a significant decrease in TSS (40%), and COD (72%). the final measurements of pH met the standards set by government regulations, indicating successful remediation of these specific parameters. Even though TSS and COD haven't met the standard limits, each of them shows a very promising efficiency improvement. Towards the end of this study, it is suggested that the combination of these methods holds promise for effectively remediating tofu wastewater.

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Characteristics of tofu whey degradation during self-sustaining batch anaerobic process for methane production

Cited by 9 publications

References 43 publications

Microbial Fuel Cells (MFC): A Potential Game-Changer in Renewable Energy Development

Microbial Fuel Cells (MFC): A Potential Game-Changer in Renewable Energy Development

Anaerobic Digestion of Pig Slurry in Fixed-Bed and Expanded Granular Sludge Bed Reactors

Advanced Treatment of Tofu Wastewater using Multilevel Filtration and TiO2 Photocatalysis as Promising Approach for Effective Wastewater Remediation

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