Application of microbial electrochemical technologies for the treatment of petrochemical wastewater with concomitant valuable recovery: A review

Priyadarshini, Monali; Ahmad, Azhan; Das, Sovik; Ghangrekar, Makarand M.

doi:10.1007/s11356-021-14944-w

Cited by 29 publications

(8 citation statements)

References 122 publications

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“…Apart from H 2 and CH 4 generation at the cathode, MEC have been extensively used for the removal dyes, pharmaceuticals, chlorinated compounds, EDCs, and heavy metals from wastewaters [3]. The low operational cost, value-added product recovery, self-generation of biocatalysts, and low sludge production are certain advantages of MEC over other available technologies, such as electrocoagulation, membrane bioreactor, advanced oxidation process, and activated sludge process [125].…”

Section: Mecmentioning

confidence: 99%

Role of bioelectrochemical systems for the remediation of emerging contaminants from wastewater: A review

et al. 2021

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Bioelectrochemical systems (BESs) are a unique group of wastewater remediating technology that possesses the added advantage of valuable recovery with concomitant wastewater treatment. Moreover, due to the application of robust microbial biocatalysts in BESs, effective removal of emerging contaminants (ECs) can be accomplished in these BESs. Thus, this review emphasizes the recent demonstrations pertaining to the removal of complex organic pollutants of emerging concern present in wastewater through BES.Owing to the recalcitrant nature of these pollutants, they are not effectively removed through conventional wastewater treatment systems and thereby are discharged into the environment without proper treatment. Application of BES in terms of ECs removal and degradation mechanism along with valuables that can be recovered are discussed. Moreover, the factors affecting the performance of BES, like biocatalyst, substrate, salinity, and applied potential are also summarized. In addition, the present review also elucidates the occurrence and toxic nature of ECs as well as future recommendations pertaining to the commercialization of this BES technology for the removal of ECs from wastewater. Therefore, the present review intends to aid the researchers in developing more efficient BESs for the removal of ECs from wastewater.

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Section: Mecmentioning

confidence: 99%

Role of bioelectrochemical systems for the remediation of emerging contaminants from wastewater: A review

et al. 2021

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“…Different METs have been developed and are distinguished based on their applicability and value-added product recovered through them, such as MFC for the generation of bio-electricity, MEC for valuables like H 2 and methane production, microbial electrosynthesis (MES) for biofuels like acetate, ethanol, butyrate production, microbial desalination cell (MDC) for desalination of brackish water along with power generation and microbial carbon-capture cell (MCC) for bioelectricity production with concomitant carbon sequestration (Priyadarshini et al, 2021). Nevertheless, MFC, MEC, and MDC are among the most widely applied and investigated METs owing to their ease of operation, vast applicability, and potential of higher economic and environmental sustainability.…”

Section: Microbial Electrochemical Technologiesmentioning

confidence: 99%

A Sustainable Approach for the Production of Green Energy With the Holistic Treatment of Wastewater Through Microbial Electrochemical Technologies: A Review

2021

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With the plausible depletion of fossil fuels in the near future and its associated environmental impacts, researchers have instigated the search for eco-friendly renewable bioenergy. Moreover, the increase in water pollution by industrial and anthropogenic activities is another alarming global concern. In this regard, the production of renewable and sustainable green bioenergy utilizing wastewater through microbial electrochemical technologies (METs) can alleviate these crucial problems by providing a sustainable solution to meet both the demands of energy and fresh water supply. Moreover, different bio-centered techniques such as nitrification and denitrification for nitrogen removal, and elimination of carcinogenic metals, pathogens, and organic components utilizing microbiota followed by toxicity sensing of different pollutants have been efficaciously exhibited through METs. However, inferior bioenergy production and recovery of low biomass yield in METs with high operational cost are noteworthy bottlenecks that hinder the scalability of this technology. Therefore, this review elaborates different physicochemical factors affecting the performance of METs, microbial interaction for the development of stable biofilm and so forth. Moreover, a broad overview on the production of bioenergy, along with the removal of pollutants from wastewater through different types of METs are also highlighted. Furthermore, the production of biofuels like ethanol, methanol, biodiesel, and gaseous fuel like bio-H2 coupled with power generation using photosynthetic microorganisms via CO2 sequestration through METs are also discussed. Additionally, recent developments with future scope for the field-scale implementation of METs along with their bottlenecks have been discussed, which has not been critically reviewed to date.

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“…A typical MET setup consists of two electrodes; namely, the anode and cathode, separated using a cation or anion exchange membrane (AEM). From an application point of view, METs are categorized as MFCs for the simultaneous wastewater treatment and bioenergy production, as microbial electrolysis cells (MECs) majorly for the production of H 2 , as microbial desalination cells (MDCs) for desalination along with bioenergy recovery, as microbial carbon capture cells (MCCs) for carbon sequestration with bioenergy and biofuel recovery, and as microbial electrosynthesis (MES) for recycling carbon dioxide to commodity chemicals [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Dairy Wastewater as a Potential Feedstock for Valuable Production with Concurrent Wastewater Treatment through Microbial Electrochemical Technologies

2022

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A milk-processing plant was drafted as a distinctive staple industry amid the diverse field of industries. Dairy products such as yogurt, cheese, milk powder, etc., consume a huge amount of water not only for product processing, but also for sanitary purposes and for washing dairy-based industrial gear. Henceforth, the wastewater released after the above-mentioned operations comprises a greater concentration of nutrients, chemical oxygen demand, biochemical oxygen demand, total suspended solids, and organic and inorganic contents that can pose severe ecological issues if not managed effectively. The well-known processes such as coagulation–flocculation, membrane technologies, electrocoagulation, and other biological processes such as use of a sequencing batch reactor, upflow sludge anaerobic blanket reactor, etc., that are exploited for the treatment of dairy effluent are extremely energy-exhaustive and acquire huge costs in terms of fabrication and maintenance. In addition, these processes are not competent in totally removing various contaminants that exist in dairy effluent. Accordingly, to decrease the energy need, microbial electrochemical technologies (METs) can be effectively employed, thereby also compensating the purification charges by converting the chemical energy present in impurities into bioelectricity and value-added products. Based on this, the current review article illuminates the application of diverse METs as a suitable substitute for traditional technology for treating dairy wastewater. Additionally, several hindrances on the way to real-world application and techno-economic assessment of revolutionary METs are also deliberated.

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Application of microbial electrochemical technologies for the treatment of petrochemical wastewater with concomitant valuable recovery: A review

Cited by 29 publications

References 122 publications

Role of bioelectrochemical systems for the remediation of emerging contaminants from wastewater: A review

Role of bioelectrochemical systems for the remediation of emerging contaminants from wastewater: A review

A Sustainable Approach for the Production of Green Energy With the Holistic Treatment of Wastewater Through Microbial Electrochemical Technologies: A Review

Dairy Wastewater as a Potential Feedstock for Valuable Production with Concurrent Wastewater Treatment through Microbial Electrochemical Technologies

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