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Nanobiochar for the remediation of contaminated soil and water: challenges and opportunities
Journal article   Open access   Peer reviewed

Nanobiochar for the remediation of contaminated soil and water: challenges and opportunities

Mengyuan Jiang, Lizhi He, Nabeel Khan Niazi, Hailong Wang, Williamson Gustave, Meththika Vithanage, Kun Geng, Hua Shang, Xiaokai Zhang and Zhenyu Wang
Biochar (Online), Vol.5(1)
13/01/2023
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Published (Version of record)CC BY V4.0 Open Access
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UN Sustainable Development Goals (SDGs)

This output has contributed to the advancement of the following goals:

#2 Zero Hunger
#6 Clean Water and Sanitation
#12 Responsible Consumption & Production
#13 Climate Action
#15 Life on Land

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Abstract

Agriculture Ceramics Composites Earth and Environmental Science Environment Environmental Engineering/Biotechnology Fossil Fuels (incl. Carbon Capture) Glass Natural Materials Renewable and Green Energy Review Soil Science & Conservation Environmental pollution Nanotechnology Modified biochar Remediation Soil and water system
Although research on biochar has received increasing attention for environmental and agricultural applications, the significance of nanobiochar for environmental pollutant remediation is poorly understood. In contrast to bulk biochar, nanobiochar has superior physicochemical properties such as high catalytic activity, unique nanostructure, large specific surface area and high mobility in the soil environment. These unique characteristics make nanobiochar an ideal candidate for pollution remediation. Thus far, the research on nanobiochar is still in its infancy and most of the previous studies have only been conducted for exploring its properties and environmental functions. The lack of in-depth summary of nanobiochar’s research direction makes it a challenge for scientists and researchers globally. Hence in this review, we established some key fabrication methods for nanobiochar with a focus on its performance for the removal of pollutants from the environment. We also provided up-to-date information on nanobiochar’s role in environmental remediation and insights into different mechanisms involved in the pollutant removal. Although, nanobiochar application is increasing, the associated drawbacks to the soil ecosystem have not received enough research attention. Therefore, further research is warranted to evaluate the potential environmental risks of nanobiochar before large scale application.

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