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Wood-based biochar for the removal of potentially toxic elements in water and wastewater: a critical review

Sabry M. ShaheenDepartment of Soil and Water Sciences, Faculty of Agriculture, University of Kafrelsheikh, Kafr El-Sheikh, EgyptNabeel Khan NiaziInstitute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, PakistanNoha E.E. HassanAgricultural Extension and Rural Development Research Institute, Agricultural Researcher Center, Giza, EgyptIrshad BibiInstitute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, PakistanHailong WangKey Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A & F University, Hangzhou, People’s Republic of ChinaDaniel C.W. TsangDepartment of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, People’s Republic of ChinaYong Sik OkKorea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) and Division of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of KoreaNanthi BolanCooperative Research Centre for Contamination Assessment and Remediation of Environment (CRC CARE), The University of Newcastle, Callaghan, NSW, AustraliaJörg RinklebeDepartment of Environment, Energy and Geoinformatics, Sejong University, Seoul, Republic of Korea

2018en

ABI

Аннотация

Recently, biochar has received significant attention, especially for the removal of potentially toxic elements (PTEs) from water and wastewater. No review has been focused on the potential use of wood-based biochar (WB) for the removal of PTEs in water and wastewater. Here, we have critically reviewed the (i) preparation and characterisation of WB; (ii) removal efficiency of WB for PTEs in water with respect to its physicochemical characteristics, biochar/water ratio, pH, and sorption system; (iii) removal mechanisms of PTEs by WB; (iv) fate of the sorbed PTEs onto WB; and (v) recovery of the sorbed PTEs from the resultant sludge of WB. We also discussed the removal of PTEs by engineered/designer WB as compared to pristine WB. This review demonstrates the overarching scientific opportunities for a comprehensive understanding of using WB as an emerging biosorbent and a promising low-cost and effective material for the remediation of PTEs contaminated water.

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DOI: 10.1080/09506608.2018.1473096

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