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Han X, Qu Y, Li D, Qiu Y, Yu Y, Feng Y. Remediation of saline-sodic soil by plant microbial desalination cell. CHEMOSPHERE 2021; 277:130275. [PMID: 33774245 DOI: 10.1016/j.chemosphere.2021.130275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 02/18/2021] [Accepted: 03/06/2021] [Indexed: 06/12/2023]
Abstract
Saline-sodic soil is widely distributed around the world and has induced severe impacts on ecosystems and agriculture. Plant microbial desalination cell (PMDC) and soil microbial desalination cell (SMDC) were constructed to migrate excessive salt in the soil in this study. Compared with SMDC, PMDCs generated higher voltage ranging from 150 mV to 410 mV (500Ω) and the maximum power density reached 34 mW/m2. Higher desalinization efficiency was obtained by PMDCs, the soil conductivity reduced from initial 2.4 mS/cm to 0.4 ± 0.1 mS/cm and pH decreased from initial 10.4 to 8.2 ± 0.1. Soils desalination in PMDCs was achieved through multiple pathways, including ion migration in PMDCs driven by electrokinetic process, plant absorption and bioremediation by plant roots and anode microorganism activity. Geobacter was the dominant electrogenic bacteria at the PMDC anode. The electrochemical and desalinating performance of PMDCs was enhanced by plants and provided a new method for remediation of saline-sodic soil.
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Affiliation(s)
- Xiaoyu Han
- School of Environment, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No 73 Huanghe Road, Nangang District, Harbin, 150090, China
| | - Youpeng Qu
- School of Environment, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No 73 Huanghe Road, Nangang District, Harbin, 150090, China; School of Life Science and Technology, Harbin Institute of Technology, No. 2 Yikuang Street, Nangang District, Harbin, 150080, China.
| | - Da Li
- School of Environment, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No 73 Huanghe Road, Nangang District, Harbin, 150090, China
| | - Ye Qiu
- School of Environment, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No 73 Huanghe Road, Nangang District, Harbin, 150090, China
| | - Yanlig Yu
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, No. 92 Xidazhi Street, Nangang District, Harbin, 150001, China
| | - Yujie Feng
- School of Environment, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No 73 Huanghe Road, Nangang District, Harbin, 150090, China.
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Choi JH, Lee YJ, Maruthamuthu S, Lee HG, Ha TH. Restoration of saline greenhouse soil and its effect on crop’s growth throughin situfield-scale electrokinetic technology. SEP SCI TECHNOL 2016. [DOI: 10.1080/01496395.2016.1141958] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Abou-Shady A. Reclaiming salt-affected soils using electro-remediation technology: PCPSS evaluation. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.01.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Annamalai S, Santhanam M, Sundaram M, Curras MP. Electrokinetic remediation of inorganic and organic pollutants in textile effluent contaminated agricultural soil. CHEMOSPHERE 2014; 117:673-678. [PMID: 25461934 DOI: 10.1016/j.chemosphere.2014.10.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 10/01/2014] [Accepted: 10/02/2014] [Indexed: 06/04/2023]
Abstract
The discharge from the dyeing industries constitutes unfixed dyes, inorganic salts, heavy metal complexes etc., which spoil the surrounding areas of industrial sites. The present article reports the use of direct current electrokinetic technique for the treatment of textile contaminated soil. Impressed direct current voltage of 20 V facilitates the dye/metal ions movement in the naturally available dye contaminated soil towards the opposite electrode by electromigration. IrO2–RuO2–TiO2/Ti was used as anode and Ti used as cathode. UV–Visible spectrum reveals that higher dye intensity was nearer to the anode. Ni, Cr and Pb migration towards the cathode and migration of Cu, SO42− and Cl− towards anode were noticed. Chemical oxygen demand in soil significantly decreased upon employing electrokinetic. This technology may be exploited for faster and eco-friendly removal of dye in soil environment.
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Affiliation(s)
- Sivasankar Annamalai
- Microbial Corrosion and Bio-Environmental Engineering, CSIR-Central Electrochemical Research Institute, Karaikudi 630006, India.
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Hamdan SH, Molelekwa GF, Van der Bruggen B. Electrokinetic Remediation Technique: An Integrated Approach to Finding New Strategies for Restoration of Saline Soil and to Control Seawater Intrusion. ChemElectroChem 2014. [DOI: 10.1002/celc.201402071] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Lee YJ, Choi JH, Lee HG, Ha TH. In Situ Electrokinetic Removal of Salts from Greenhouse Soil Using Iron Electrode. SEP SCI TECHNOL 2013. [DOI: 10.1080/01496395.2012.710290] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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