Using Biochar for Remediation of Contaminated Soils

Wang, Hailong; Yang, Xing; He, Linli; Lu, Keding; Müller, Karin; McGrouther, Kim; Xu, Shixiao; Zhang, Xiaokai; Li, Jianwu; Huang, Huagang; Yuan, Guodong; Hu, Guotao; Liu, Xingyuan

doi:10.1007/978-981-10-6029-8_47

Cited by 5 publications

(3 citation statements)

References 32 publications

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“…Some authors have previously studied the influence of the insertion of a permeable reactive barrier (PRB) in electrokinetic remediation process, and different results have been reported. Wang et al [13] reported that a Pd/Fe PRB inclusion caused that EOF decreased 1.8 times in an electrokinetic remediation process of hexaclorobenzenepolluted soil. Kebria et al [14] reported similar results.…”

Section: Resultsmentioning

confidence: 99%

Strategies for the electrobioremediation of oxyfluorfen polluted soils

Barba

Villaseñor

Cañizares

et al. 2019

Electrochimica Acta

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This work compares three strategies for the in-situ remediation of oxyfluorfen polluted clay soil, based on the combination of biological processes and electrokinetics (EK): (i) EK-biostimulation, in which the action of microorganisms contained in soil is promoted without the use of biological permeable barriers, (ii) EK-bioaugmentation with fixed culture of microorganisms (BB1), which enhanced the natural bioremediation by including a microbial fixed biofilm reactor as permeable biobarrier, and (iii) EKbioaugmentation with suspended culture of microorganisms (BB2), which improves the natural remediation by including a mixture of soil and a microbial suspension as permeable biobarrier. To do this, two-week batch electro-bioremediation tests were carried out using bench scale set-ups. In each case, a constant electric field (1 V cm -1 ) was applied, and electrode polarity was reversed periodically, every 12 h. In addition, a microbial consortium acclimated to oxyfluorfen biodegradation was used. The best oxyfluorfen removal efficiency (15%) was obtained using the option (i). Permeable 2 biobarriers allowed the introduction of microorganism and nutrients into the soil, and the biological activity reached the whole soil positions. However, the insertion of these biobarriers caused an excessive decrease in the electro-osmotic flow (approximately 80%) which, in turn reduced the mobilization of the pollutants. Despite of that, resultsshow that permeable reactive biobarriers may result in a successful alternative for insitu EK-bioaugmentation, although higher retention times would be needed to obtain higher removal efficiencies.

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Section: Resultsmentioning

confidence: 99%

Strategies for the electrobioremediation of oxyfluorfen polluted soils

Barba

Villaseñor

Cañizares

et al. 2019

Electrochimica Acta

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“…Since 2007, much research on biochar as an immobilising agent for PTEs has been done dealing with contaminated soils (e.g. [202,[224][225][226][227][228]) and water (e.g. [229][230][231][232][233]).…”

Section: Potentially Toxic Elementsmentioning

confidence: 99%

“…Lu et al [236] found that the rice-straw-derived biochar was most effective in reducing the availability of Zn followed by Pb, Cu, and Cd. Wang et al [224] showed that bamboo biochar was most effective in reducing the uptake of Pb by soybean shoots, followed by Cd, Zn, Cu, and Ni. Zhang et al [237] demonstrated that tobacco biochar had reduced the phytoavailability of Cr, Cu, and Pb.…”

Section: Immobilisation Of Potentially Toxic Elements In Soilsmentioning

confidence: 99%

Multifunctional applications of biochar beyond carbon storage

Bolan

Hoang

Beiyuan

et al. 2021

International Materials Reviews

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330

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Biochar is produced as a charred material with high surface area and abundant functional groups by pyrolysis, which refers to the process of thermochemical decomposition of organic material at elevated temperatures in the absence of oxygen. The carbon component in biochar is relatively stable, and, hence, biochar was originally proposed as a soil amendment to store carbon in the soil. Biochar has multifunctional values that include the use of it for the following purposes: soil amendment to improve soil health, nutrient and microbial carrier, immobilising agent for remediation of toxic metals and organic contaminants in soil and water, catalyst for industrial applications, porous material for mitigating greenhouse gas emissions and odorous compounds, and feed supplement to improve animal health and nutrient intake efficiency and, thus, productivity. This article provides for the first time an overview of the multifunctional values and unintended consequences of biochar applications.

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