Electro-assisted groundwater bioremediation: Fundamentals, challenges and future perspectives

Li, Wenwei; Yu, Han‐Qing

doi:10.1016/j.biortech.2015.07.074

Cited by 40 publications

(13 citation statements)

References 73 publications

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“…Over the last decades, AEMs have been widely used on a large industrial scale in processes such as diffusion dialysis, electrodialysis, electrolysis, for seawater desalination, the treatment of industrial effluents, and chlorine–alkaline production . More recently, to reduce reliance on fossil fuels, there has been increasing interest in the use of AEMs in energy conversion and storage systems, such as reverse electrodialysis, polymer electrolyte fuel cells, microbial fuel cells, and redox flow batteries . In particular, the alkaline anion‐exchange membrane fuel cell (AAEMFC) is now considered as one of the most promising green energy‐conversion technologies for stationary and mobile applications due to the high fuel conversion efficiency at high pH and low cost stemming from their ability to operate in basic conditions using nonprecious metal catalysts.…”

Section: Methodsmentioning

confidence: 99%

Alkaline Anion‐Exchange Membranes Containing Mobile Ion Shuttles

Guiver

et al. 2016

Advanced Materials

113

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A new class of alkaline anion-exchange membranes containing mobile ion shuttles is developed. It is achieved by threading ionic linear guests into poly(crown ether) hosts via host-guest molecular interaction. The thermal- and pH-triggered shuttling of ionic linear guests remarkably increases the solvation-shell fluctuations in inactive hydrated hydroxide ion complexes (OH(-) (H2 O)4 ) and accelerates the OH(-) transport.

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Section: Methodsmentioning

confidence: 99%

Alkaline Anion‐Exchange Membranes Containing Mobile Ion Shuttles

Guiver

et al. 2016

Advanced Materials

113

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“…In 2014, the greenhouse gas of in situ leaching of copper, uranium, and gold resources were researched [245]. Conversely, as far back in 1993, the microbes had been proposed as a treatment for metal pollution like groundwater bioremediation [246][247][248]. Thus, to some extent, balancing application and control of bioleaching is a key factor which has limited the layout space.…”

Section: Environmental Protection and Securitymentioning

confidence: 99%

Copper Bioleaching in China: Review and Prospect

et al. 2018

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The commercial application of copper bioleaching, an environmentally-friendly approach for low-grade and secondary mineral resources recycling, has increased worldwide since the 2000s. As the world's second-largest economic entity and the largest developing country, China has the largest demand for metal resources, significantly advancing the theory and industrial technology of copper bioleaching. This paper reviews the exploration and application of copper bioleaching in China. Two typical bioleaching applications and technological processes, bioheap leaching at the Zijinshan Copper Mine and bioheap leaching at the Dexing Copper Mine, are introduced. The considerable research completed by researchers is summarized, especially focusing on the isolation and identification of leaching bacteria, the bioleaching mechanism and interface reactions, multistage percolation behavior, bioleaching system reconstruction, the multiphysics coupled model, and enhanced copper bioleaching from waste printed circuit boards (WPCBs). Based on this investigation in China, key trends and prospects in copper bioleaching-such as efficiency improvement, environmental protection, and improved technology applications-are proposed.

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“…In addition, limited mixing within an aquifer allows replenishment of electron acceptors only at the physical boundary of a contaminated plume, where diffusion and dispersion are the predominant mixing factors (Li and Yu, 2015). Due to normally low concentration of organic matter in groundwater, a similar behavior can be observed for reduction reactions, such as denitrification,…”

Section: Practical Hurdles In Groundwater Remediation Suggesting Bessmentioning

confidence: 99%

“…where the limiting electron donor may reduce the possible reaction rates (Shen et al, 2015). In addition, metabolism and growth of microorganisms may be slowed down in these circumstances since the majority of them is attached to soil particles or located in the sediments, where diffusion of electron acceptors and donors might be particularly difficult (Li and Yu, 2015).…”

Section: Practical Hurdles In Groundwater Remediation Suggesting Bessmentioning

confidence: 99%

“…In some cases, addition of chemicals as electron donors/acceptors is chosen, requiring periodical replacement of the spent agents, which is not needed in the case of electrodes. In addition, when reduction reactions are involved, it is possible to set the desired cathodic electrode potential at a reductive level that simply cannot be reached by the sole addition of chemical reagents (Li and Yu, 2015;Williams et al, 2010).…”

Section: Practical Hurdles In Groundwater Remediation Suggesting Bessmentioning

confidence: 99%

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<em>In situ</em> Groundwater Treatment with Bioelectrochemical Systems (BES): Critical Review and Future Perspectives

Cecconet¹,

Sabba²,

Devecseri³

et al. 2019

Preprint

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Groundwater contamination is an ever-growing environmental issue, that has attracted much and undiminished attention for the past half century. Groundwater contamination originates from anthropogenic (e.g. hydrocarbons), natural compounds (e.g. nitrate and arsenic), or both; to tackle these contaminants different technologies have been tested during the years. Recently, bioelectrochemical systems (BESs) have emerged as a potential treatment for groundwater contamination, with in situ applications reported, that showed promising results. Nitrate and hydrocarbons (toluene, phenanthrene, benzene, BTEX and light PAHs) have been successfully removed, due to the interaction of microbial metabolism with poised electrodes, other than physical migration due to the electric field generated in BES. The selection of proper BESs relies on several factors and problems such as complexity of the groundwater, scale-up and energy requirements that need to be taken into account. Modelling efforts could help predict case scenarios and choose an ideal design and approach to solve these issues. In this review, we critically analyze in situ BES applications for groundwater remediation, focusing in particular on the different setups proposed, and we identify and discuss the existing research gaps in the field.

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Electro-assisted groundwater bioremediation: Fundamentals, challenges and future perspectives

Cited by 40 publications

References 73 publications

Alkaline Anion‐Exchange Membranes Containing Mobile Ion Shuttles

Alkaline Anion‐Exchange Membranes Containing Mobile Ion Shuttles

Copper Bioleaching in China: Review and Prospect

<em>In situ</em> Groundwater Treatment with Bioelectrochemical Systems (BES): Critical Review and Future Perspectives

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