Merging microbial electrochemical systems with electrocoagulation pretreatment for achieving a complete treatment of brewery wastewater

Tejedor-Sanz, Sara; Ortíz, Juan Manuel; Esteve‐Núñez, Abraham

doi:10.1016/j.cej.2017.08.049

Cited by 49 publications

(45 citation statements)

References 37 publications

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“…These results indicate that a higher proportion of COD was used for electricity generation during the initial stage of continuous flow operation and that most COD might be lost by fermentation or reducing alternative nonelectrode electron acceptors in the later stages. The CEs of BESs treating brewery wastewaters largely depend on the reactor design and operation parameters, but generally are in the range of 5–56% (Wen, Wu, Zhao, & Sun, 2010; Kim, Yang, & Logan, 2015; Tejedor‐Sanz et al, 2017; Tejedor‐Sanz et al, 2018). Even with a low CE of 8.0–19.1%, the electricity generated from brewery wastewater could be self‐sufficient for wastewater treatment in a 90‐L reactor in a previous report (Dong et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…The bioelectrochemical system (BES) is promising for wastewater treatment, in which exoelectrogenic microorganisms potentially convert organic substances in wastewater into electricity in an anaerobic environment (Logan & Rabaey, 2012; Wang, Liu, Ma, & Zhao, 2016). BES could be used to treat various wastewaters, such as food industry residues and brewery wastewater, which contain various highly biodegradable organic matter for electricity generation (Lu et al, 2017; Tejedor‐Sanz, Ortiz, & Esteve‐Núñez, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Stratified microbial structure and activity within anode biofilm during electrochemically assisted brewery wastewater treatment

Mai

Yang

Cao

et al. 2020

Biotech & Bioengineering

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In a bioelectrochemical system (BES), microbial community of anode biofilm is crucial to BES performance. In this study, the stratified pattern of community structure and activity of an anode‐respiring biofilm in a BES fueled with brewery wastewater was investigated over time. The anode biofilm exhibited a superior performance in the removal of ethanol to that of an open‐circuit system. The electrical current density reached a high level of 0.55mA/cm2 with a Coulombic efficiency of 71.4%, but decreased to 0.18mA/cm2 in the late stage of operation. A mature biofilm developed a more active outer layer covering a less active inner core, although the activities of the outer and inner layers of biofilm were similar in the early stage. More Geobacter spp., typical exoelectrogens, were enriched in the outer layer than in the inner layer of biofilm in the early stage, while more Geobacter spp. were distributed in the inner layer than in the outer layer in the late stage. The inactive and Geobacter‐occupied inner layer of biofilm might be responsible for the decreased electricity generation from wastewater in the late stage of operation. This study provides better understanding of the effect of anode biofilm structure on BES performance.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stratified microbial structure and activity within anode biofilm during electrochemically assisted brewery wastewater treatment

Mai

Yang

Cao

et al. 2020

Biotech & Bioengineering

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“…Interestingly, the COD removal efficiency remained quite stable at all treatment times with the removal below 16%. It has been suggested that the poor COD removal of EC can be explained by the soluble COD fraction of the wastewater [7]. The soluble COD fraction of the wastewater obtained from Wellington Brewery was approximately 73%.…”

Section: Effect Of Electrolysis Timementioning

confidence: 99%

“…The treatment of food and beverage wastewater by electrocoagulation (EC) has been proven successful in terms of removal performance in past studies [6,7]. However, despite these optimistic results, studies on the treatment of brewery effluent by EC remains relatively untouched from a technical and economic standpoint.…”

Section: Introductionmentioning

confidence: 99%

“…EC has also been reported as a cost-effective treatment method to remove heavy metals from industrial wastewater if compared to chemical coagulation (CC) [10,11]. Several studies have been proposed and conducted regarding the integration of EC with other technologies such as biological reactors and chemical coagulation (CC) [7,12]. Employing a hybrid process can result in potential cost and energy savings while simultaneously improving treatment performance.…”

Section: Introductionmentioning

confidence: 99%

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Combined Electrocoagulation and Chemical Coagulation in Treating Brewery Wastewater

Swain

Abbassi

Kinsley

2020

Water

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Significant over-strength discharge fees are often imposed on breweries for the disposal of high-strength effluent to sanitary sewers. In this research work, the removal performances of electrocoagulation (EC) compared with operating electrocoagulation and chemical coagulation in sequence (EC-CC) or vice-versa (CC-EC) was examined to determine the capability of treatment in reducing the strength of the wastewater. Optimal operating parameters regarding electrolysis time, initial pH, and applied power were determined in conjunction with nutrient removal performance, electrode consumption and energy usage. Combined EC-CC treatment has been demonstrated to be economically feasible for brewery wastewater applications from an energy consumption perspective due to the efficiency of nutrient removal and the reduction of sewer discharge costs. Treatment by EC-CC at 5 W for 20 min using aluminum electrodes resulted in enhanced and consistent removal efficiencies of 26%, 74%, 76%, and 85% for chemical oxygen demand (COD), reactive phosphorous (RP), total phosphorous (TP) and total suspended solids (TSS), respectively. Energy consumption was the main contributor to operating cost. By considering potential recovered over-strength discharge fees (ODF), EC-CC treatment is economically feasible and beneficial in a brewery wastewater application. The results demonstrated the effectiveness of the CC-EC process to remove phosphorous, organics and solids from brewery wastewater at lower power supply, so that the recovered ODF cost for CC-EC at 5 W-EC is 23% higher than at 10 W-EC.

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Pre‐treatment of Industrial Wastewater

Sharma,

Dey

2024

Application of Sewage Sludge in Industrial Wastewater Treatment

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Merging microbial electrochemical systems with electrocoagulation pretreatment for achieving a complete treatment of brewery wastewater

Cited by 49 publications

References 37 publications

Stratified microbial structure and activity within anode biofilm during electrochemically assisted brewery wastewater treatment

Stratified microbial structure and activity within anode biofilm during electrochemically assisted brewery wastewater treatment

Combined Electrocoagulation and Chemical Coagulation in Treating Brewery Wastewater

Pre‐treatment of Industrial Wastewater

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