Spatial variation of electrode position in bioelectrochemical treatment system: Design consideration for azo dye remediation

Yeruva, Dileep Kumar; Sravan, J. Shanthi; Butti, Sai Kishore; Modestra, J. Annie; Mohan, S. Venkata

doi:10.1016/j.biortech.2018.02.030

Cited by 19 publications

(2 citation statements)

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“…In the context of addressing sustainability and the limitations of conventional electrochemical processes, the integration of microbial and electrochemical processes (bioelectrochemical treatment (BET)/electrochemical oxidation (EO) process) has arisen as a promising alternative for industrial wastewater treatment with near-zero carbon/micropollutant discharge [ 42 , 48 , 55 , 56 ]. Bioelectrochemical treatment processes (BET/EO/electrodeposition/biomineralization) have significantly influenced wastewater treatment because of their relatively high efficiency with integrated microbeelectrode interactions [ 20 , 22 , 43 , 56 , 57 ].…”

Section: Emerging Trendsmentioning

confidence: 99%

“…These electrochemical interactions between the primary oxidants and wastewater complexes on the anode surface result in secondary oxidant production in the system. The IAO process usually involves the mediation of secondary oxidants (hydroxyl radicals (OH *), chlorine dioxide (ClO 2 ), ozone (O 3 ), hypochlorite (OCl - ), and hydrogen peroxide (H 2 O 2 )), whose formation is proportional to the primary oxidant production [ 7 , 20 , 55 ]. Both the primary and secondary oxidants have a huge influence as mediators/redox intermediates during complex/industrial wastewater treatment.…”

Section: Emerging Trendsmentioning

confidence: 99%

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Advances in Biological Wastewater Treatment Processes: Focus on Low-Carbon Energy and Resource Recovery in Biorefinery Context

Sravan,

Matsakas,

Sarkar

2024

Bioengineering

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Advancements in biological wastewater treatment with sustainable and circularity approaches have a wide scope of application. Biological wastewater treatment is widely used to remove/recover organic pollutants and nutrients from a diverse wastewater spectrum. However, conventional biological processes face challenges, such as low efficiency, high energy consumption, and the generation of excess sludge. To overcome these limitations, integrated strategies that combine biological treatment with other physical, chemical, or biological methods have been developed and applied in recent years. This review emphasizes the recent advances in integrated strategies for biological wastewater treatment, focusing on their mechanisms, benefits, challenges, and prospects. The review also discusses the potential applications of integrated strategies for diverse wastewater treatment towards green energy and resource recovery, along with low-carbon fuel production. Biological treatment methods, viz., bioremediation, electro-coagulation, electro-flocculation, electro-Fenton, advanced oxidation, electro-oxidation, bioelectrochemical systems, and photo-remediation, are summarized with respect to non-genetically modified metabolic reactions. Different conducting materials (CMs) play a significant role in mass/charge transfer metabolic processes and aid in enhancing fermentation rates. Carbon, metal, and nano-based CMs hybridization in different processes provide favorable conditions to the fermentative biocatalyst and trigger their activity towards overcoming the limitations of the conventional process. The emerging field of nanotechnology provides novel additional opportunities to surmount the constraints of conventional process for enhanced waste remediation and resource valorization. Holistically, integrated strategies are promising alternatives for improving the efficiency and effectiveness of biological wastewater treatment while also contributing to the circular economy and environmental protection.

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