Effect of Methylene Blue Addition as a Redox Mediator on Performance of Microbial Desalination Cell by Utilizing Tempe Wastewater

Zuhri, Fachryan; Arbianti, Rita; Utami, Tania Surya; Hermansyah, Heri

doi:10.14716/ijtech.v7i6.1795

Cited by 11 publications

(3 citation statements)

References 14 publications

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“…Soybean hulls can be utilized for feeding lamb, steer, and laying hen as energy and fiber sources (Anderson et al., 1988; Esonu et al., 2005; Hartini et al., 2018). Microbial fuel cell (MFC) system with methylene blue as a redox mediator can be used to treat tempeh wastewater using its own Gram‐positive and Gram‐negative bacteria as well as the biofilm formed (Arbianti et al., 2018; Mariana, Elisabeth, Utami, Arbianti, & Hermansyah, 2017; Siagian et al., 2017; Zuhri et al., 2016). Gram‐positive and Gram‐negative bacteria from tempeh wastewater were grown on selective media and selected before being added to the MFC reactor by 1 and 5 mL, resulting in reduction in chemical oxygen demand and biochemical oxygen demand levels by up to 29.32% and 51.32%, respectively (Arbianti et al., 2018).…”

Section: Resultsmentioning

confidence: 99%

Tempeh: A semicentennial review on its health benefits, fermentation, safety, processing, sustainability, and affordability

Ahnan-Winarno

Cordeiro

Winarno

et al. 2021

Comp Rev Food Sci Food Safe

129

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Tempeh is a fermented food made of mainly soybeans and is a nutritious, affordable, and sustainable functional source of protein. Globally, tempeh is a widely accepted fermented product. Although there is a growing body of literature on tempeh, most research has focused on unfermented soybeans, thus the impact of tempeh fermentation on biological properties of soybeans has been largely left scattered. The objective of this review is to summarize the literature of tempeh fermentation over the past 60 years. A search of articles on tempeh published from 1960 to 2020 was performed using the Cochrane Library, Web of Science, EBSCOhost FSTA database, and Google Scholar. References from identified articles were reviewed for additional sources. In total, 321 papers were selected for this review, of which 64 papers were related to the health benefits of tempeh. This review concluded that sufficient evidence exists in the literature supporting tempeh fermentation as a low‐cost, health‐promoting, and sustainable food processing technology to produce protein‐rich foods using various beans, legumes, and grains. This comprehensive review suggests further studies are needed on tempeh fermentation and its impact on human health; research and standardization of nonsoy tempeh; assessment of food safety‐improving modification in tempeh production system; and initiatives supporting the sourcing of local ingredients in tempeh production.

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Section: Resultsmentioning

confidence: 99%

Tempeh: A semicentennial review on its health benefits, fermentation, safety, processing, sustainability, and affordability

Ahnan-Winarno

Cordeiro

Winarno

et al. 2021

Comp Rev Food Sci Food Safe

129

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“…Addition of methylene blue as mediator 30mls of mehylene blue was added to the each anode mediator chamber where 10mls was added daily for 72hrs as according to (Zuhri et al, 2016).…”

Section: Composition Of Salt Bridgementioning

confidence: 99%

Effect of Methylene Blue Addition as a Redox Mediator on Performance of Microbial Fuel Cell Using Mud Sediment of River Ala

Olotu¹,

Adegunloye²,

Ekundayo³

2019

IJCRR

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Microbial fuel cells (MFCs) are also bioreactors that convert chemical energy stored in the bonds of organic matters into electricity through biocatalysis of microorganisms. Mud sediment of various depths (surface water, mud surface, 50cm, 100cm and 150cm) of River Ala were used in a double chamber microbial fuel cell (MFC) to generate electric current and comparative studies of the methylene blue mediator and mediator-less chamber were carried out. Microbial analyses, physiochemical analysis of the sediment were analyzed using standard methods. River Ala surface has the highest bacteria count of 2.4 x 10-5 and AL100cm has the lowest of 0.48 x 10-5 while AL100cm had the lowest fungi count of 0.2 x 10-6. The pH of sediment ranged from 7.52 to 6.52 and organic matter content 3.67 to 1.83(%). The mud surface has the highest conductivity and salinity content of 740 (µS) and 359 (ppm) respectively. The current and voltage readings obtained from of the methylene blue mediator chamber were slightly higher than that of the mediator-less chamber. Current 0.5 (mA) at only depth 50cm was observed in mediator-less chamber while 0.4 (mA) were common occurrences at depth 50cm and depth 100cm at the methylene blue mediator chamber; voltage readings of 0.3(V) only occurred depth 50cm in the mediator-less chamber while 0.3 (V) were observed at both depth 50cm and 100cm at the methylene blue mediator chamber. The low current and voltage reading were as a result of the high resistance it's generated and its low organic matter content. It is also a confirmation that the mediator used has an impact in the current and voltage generated in microbial fuel cell.

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“…However, sea water cannot be directly used as a source of fresh water. Desalination is a method to convert saline water into fresh water, using, for example, solar energy (Li et al, 2018;Lior & Kim, 2018), microbial desalination cell technology (Utami et al, 2015;Zuhri et al, 2016),…”

Section: Introductionmentioning

confidence: 99%

A New Cascade Solar Desalination System with Integrated Thermosyphons

Kusuma¹,

Putra²,

Respati³

2018

IJTech

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Current cascade solar desalination systems can convert sea water into fresh water, but they can only produce small quantities. To produce more fresh water, there is a solution that can be applied, i.e. modification of the existing desalination system by adding thermosyphons. The objective of this research is to design a cascade solar desalination system with integrated thermosyphons and to establish its ability to produce fresh water. The experimental study was conducted by adding an aluminum absorber plate as a heat absorber in the upper tub, and nine copper thermosyphons with each length of 60 cm in the bottom of the tub. Thermosyphons with an inclination angle of 15° were used as a solar energy absorber and heat enhancer for sea water. The experiment was performed with varying sea water flow rates of 3600, 7200, and 10800 mL/h, and levels of sea water in the upper tub of 2, 3, and 4 cm. To compare the amount of fresh water obtained from the utilization of the thermosyphons, we also used the cascade solar desalination system without the thermosyphons. The results show that the cascade solar desalination system with integrated thermosyphons was able to produce an average amount of fresh water of 38.6 mL/h, with an average daily thermal efficiency of 18.78%. On the other hand, the same system without the thermosyphons produced on average 9.9 mL/h of fresh water, with an average daily thermal efficiency of 8%. The results indicate that the use of thermosyphons in the cascade solar desalination system can increase fresh water productivity by up to 3.89 times, and increase the thermal efficiency of the system by up to 2.35 times.

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Effect of Methylene Blue Addition as a Redox Mediator on Performance of Microbial Desalination Cell by Utilizing Tempe Wastewater

Cited by 11 publications

References 14 publications

Tempeh: A semicentennial review on its health benefits, fermentation, safety, processing, sustainability, and affordability

Tempeh: A semicentennial review on its health benefits, fermentation, safety, processing, sustainability, and affordability

Effect of Methylene Blue Addition as a Redox Mediator on Performance of Microbial Fuel Cell Using Mud Sediment of River Ala

A New Cascade Solar Desalination System with Integrated Thermosyphons

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