“NEW” resource recovery from wastewater using bioelectrochemical systems: Moving forward with functions

doi:10.1007/s11783-018-1052-9

Front. Environ. Sci. Eng.

2018, Vol. 12

Issue (4) : 1 https://doi.org/10.1007/s11783-018-1052-9

FEATURE ARTICLE

“NEW” resource recovery from wastewater using bioelectrochemical systems: Moving forward with functions

Akshay Jain, Zhen He(

)

Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA

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Abstract

Resource recovery from wastewater is a key function of bioelectrochemical systems.

NEW resources to recover include Nutrient, Energy, and Water.

Identifying proper application niches can guide BES research and development.

More efforts should be invested to the application of recovered resources.

A mindset for energy performance and system scaling is critically important.

Bioelectrochemical systems (BES) have been extensively studied for resource recovery from wastewater. By taking advantage of interactions between microorganisms and electrodes, BES can accomplish wastewater treatment while simultaneously recovering various resources including nutrients, energy and water (“NEW”). Despite much progress in laboratory studies, BES have not been advanced to practical applications. This paper aims to provide some subjective opinions and a concise discussion of several key challenges in BES-based resource recovery and help identify the potential application niches that may guide further technological development. In addition to further increasing recovery efficiency, it is also important to have more focus on the applications of the recovered resources such as how to use the harvested electricity and gaseous energy and how to separate the recovered nutrients in an energy-efficient way. A change in mindset for energy performance of BES is necessary to understand overall energy production and consumption. Scaling up BES can go through laboratory scale, transitional scale, and then pilot scale. Using functions as driving forces for BES research and development will better guide the investment of efforts.

Keywords Bioelectrochemical systems Resource recovery Wastewater treatment Energy Nutrients

Corresponding Author(s): Zhen He

Issue Date: 12 July 2018

Cite this article:

Akshay Jain,Zhen He. “NEW” resource recovery from wastewater using bioelectrochemical systems: Moving forward with functions[J]. Front. Environ. Sci. Eng., 2018, 12(4): 1.

URL:

https://academic.hep.com.cn/fese/EN/10.1007/s11783-018-1052-9
https://academic.hep.com.cn/fese/EN/Y2018/V12/I4/1

Fig.1 Number of BES publications over a period of 1980–2017. Data obtained through search in Web of Science in March 2018 using keywords “bioelectrochemical systems, microbial fuel cell, microbial electrolysis cell, microbial desalination cell, and microbial electrosynthesis”

Fig.2 Paradigm of resource recovery from wastewater using bioelectrochemical systems

Fig.3 Power management system based on capacitor for harvesting energy from MFCs. Reproduction with permission from (^{Sun et al., 2016})

Fig.4 Gas production in a pilot-scale membraneless MEC winery wastewater: (a) gas composition; and (b) gas production rate. Reproduction with permission from (^{Cusick et al., 2011})

Fig.5 Specific energy consumption (SEC_NH4-N) for different aeration flow rate in an MEC. Reproduction with permission from (Zou and He, 2018)

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