SIMULTANEOUS REMOVAL AND/OR RECOVERY OF Cr(VI) AND Cr(III) USING A DOUBLE MFC TECHNIQUE

Fang Li; Chunji Jin; Chansoo Choi; Bongsu Lim

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SIMULTANEOUS REMOVAL AND/OR RECOVERY OF Cr(VI) AND Cr(III) USING A DOUBLE MFC TECHNIQUE

机译：使用双MFC技术同时去除和/或回收Cr（VI）和Cr（III）

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摘要

In order to reduce Cr(VI) and Cr(III) simultaneously, a double microbial fuel cell (MFC) system was employed to treat Cr-containing wastewater. Cr(VI)-MFC used Cr(Vl) as a catholyte to supply the generated power to Cr(III)-MFC, while the latter MFC functioned as an external load resistor of the former one. Buffer characteristics of the catholyte greatly affected the reduction of chromium ions. At an initial pH of 2.0, Cr(VI) removal increased from 49.9% to 99.9% when KH_2PO_4 was added. Keeping a concentration ratio of Cr(VI) and Cr(III) to 2:1 was found to guarantee Cr(III) reduction effectively. For a 10 hours reaction, the Cr(III) removal efficiency of the Cr(III)-MFC improved from 58% to 82% as the initial concentration of Cr(III) increased from 25 mg/L to 100 mg/L, indicating that a higher initial concentration could allow a higher removal efficiency of Cr(III).

机译：为了同时还原Cr（VI）和Cr（III），采用双微生物燃料电池（MFC）系统处理含Cr废水。 Cr（VI）-MFC使用Cr（Vl）作为阴极液，将生成的电力提供给Cr（III）-MFC，而后者则用作前者的外部负载电阻。阴极电解液的缓冲特性极大地影响了铬离子的还原。在初始pH为2.0时，添加KH_2PO_4时Cr（VI）的去除率从49.9％增加至99.9％。发现保持Cr（VI）和Cr（III）的浓度比为2：1可有效保证Cr（III）的还原。对于10小时的反应，随着Cr（III）的初始浓度从25 mg / L增加到100 mg / L，Cr（III）-MFC的Cr（III）去除效率从58％提高到82％，表明较高的初始浓度可以提高Cr（III）的去除效率。

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《Environmental engineering and management journal》 |2019年第1期|235-242|共8页
作者
Fang Li; Chunji Jin; Chansoo Choi; Bongsu Lim;
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作者单位

Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao 266100, China,Department of Applied Chemistry, Daejeon University, Daejeon 300-716, Republic of Korea;

Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao 266100, China;

Department of Applied Chemistry, Daejeon University, Daejeon 300-716, Republic of Korea;

Department of Environmental Engineering, Daejeon University, Daejeon 300-716, Republic of Korea;

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正文语种 eng
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关键词
chromium recovery; double MFC system; electron acceptor; hydrogen peroxide;

机译：铬回收双MFC系统;电子受体过氧化氢;

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1. SIMULTANEOUS REMOVAL AND/OR RECOVERY OF Cr(VI) AND Cr(III) USING A DOUBLE MFC TECHNIQUE [J] . Fang Li, Chunji Jin, Chansoo Choi, Environmental engineering and management journal . 2019,第1期

机译：使用双MFC技术同时去除和/或恢复CR（VI）和CR（III）
2. Using Native Microorganisms for the Simultaneous Removal of Organic Matter and Cr(VI) in a Biocathode Microbial Fuel Cell (MFC) [J] . Revelo Dolly M, Hurtado Nelson H, Ruiz Jaime O, Informacion Tecnologica . 2015,第6期

机译：使用天然微生物同时去除生物阴极微生物燃料电池（MFC）中的有机物和Cr（VI）
3. Microbial fuel cells (MFCs) in integration with anaerobic treatment processes (AnTPs) and membrane bioreactors (MBRs) for simultaneous efficient wastewater/sludge treatment and energy recovery -A state-of-the-art review [J] . Mina Nili Ardakani, Gagik Badalians Gholikandi Biomass & bioenergy . 2020,第Octa期

机译：微生物燃料电池（MFCs）与厌氧处理方法（抗腹膜）和膜生物反应器（MBRS）相同，用于同时有效的废水/污泥处理和能量恢复 - 最先进的审查
4. Recovery of base and precious metals from electronic scrap chloride leach solutions: Case of Zinc and Iron(III) removal by Cyanex 923 [C] . T. Mahlangu, N. Mulaudzi Minerals Engineering International conferences . 2007

机译：从电子废氯浸出溶液中恢复碱基和贵金属：Cyanex 923的锌和铁（III）的情况
5. Development of an aerated struvite crystallization reactor for phosphorus removal and recovery from swine manure [D] . Jordaan, Elsie Maria. 2011

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6. In Situ Attachment of AcrylamidoSulfonic Acid-BasedMonomer in Terpolymer Hydrogel Optimized by Response Surface Methodologyfor Individual and/or Simultaneous Removal(s) of M(III) and CationicDyes [O] . Nayan Ranjan Singha, *, Arnab Dutta, 2019

机译：丙烯酰胺的原位附着磺酸基响应面法优化三元共聚物水凝胶中的单体用于单独和/或同时去除M（III）和阳离子染料类
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8. 1 Microbial removal of SO2 and NOx from flue gas; (2) Microbial by-product recovery from regenerable processes for the simultaneous removal of SO2 and NOx from flue gas. Final report. [R] . K. L. Sublette D. Suciu 1990

机译：1微生物从烟气中去除sO2和NOx; （2）从可再生过程中回收微生物副产物，同时从烟道气中除去sO2和NOx。总结报告。

SIMULTANEOUS REMOVAL AND/OR RECOVERY OF Cr(VI) AND Cr(III) USING A DOUBLE MFC TECHNIQUE

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