Journal article
Nanobiochar-rhizosphere interactions: Implications for the remediation of heavy-metal contaminated soils
Environmental pollution (1987), Vol.299, 118810
15/04/2022
PMID: 35007673
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Source: InCites
Abstract
Soil heavy metal contamination has increasingly become a serious environmental issue globally, nearing crisis proportions. There is an urgent need to find environmentally friendly materials to remediate heavy-metal contaminated soils. With the continuing maturation of research on using biochar (BC) for the remediation of contaminated soil, nano-biochar (nano-BC), which is an important fraction of BC, has gradually attracted increasing attention. Compared with BC, nano-BC has unique and useful properties for soil remediation, including a high specific surface area and hydrodynamic dispersivity. The efficacy of nano-BC for immobilization of non-degradable heavy-metal contaminants in soil systems, however, is strongly affected by plant rhizosphere processes, and there is very little known about the role that nano-BC play in these processes. The rhizosphere represents a dynamically complex soil environment, which, although having a small thickness, drives potentially large materials fluxes into and out of plants, notably agricultural foodstuffs, via large diffusive gradients. This article provides a critical review of over 140 peer-reviewed papers regarding nano-BC-rhizosphere interactions and the implications for the remediation of heavy-metal contaminated soils. We conclude that, when using nano-BC to remediate heavy metal-contaminated soil, the relationship between nano-BC and rhizosphere needs to be considered. Moreover, the challenges to extending our knowledge regarding the environmental risk of using nano-BC for remediation, as well as further research needs, are identified.
Details
- Title
- Nanobiochar-rhizosphere interactions: Implications for the remediation of heavy-metal contaminated soils
- Creators
- Xiaokai Zhang - Jiangnan UniversityMona Wells - Ronin InstituteNabeel Khan Niazi - University of Agriculture FaisalabadNanthi Bolan - University of Western AustraliaSabry Shaheen - Wuppertal Institute for Climate, Environment and EnergyDeyi Hou - Tsinghua UniversityBin Gao - University of FloridaHailong Wang - Foshan UniversityJorg Rinklebe - University of WuppertalZhenyu Wang - Jiangnan University
- Publication Details
- Environmental pollution (1987), Vol.299, 118810
- Comment
- The authors thank Yi Zhu and Mengyuan Jiang for their comments on the manuscript prior to submission, and we are most thankful for the detailed comments of anonymous reviewers. All of the commentary received was most helpful in producing an improved review.
- Publisher
- Elsevier
- Number of pages
- 12
- Grant note
- This research was supported by the National Natural Science Foundation of China (42107245 and 41820104009)
- Identifiers
- 991013052013502368
- Copyright
- © 2022 Published by Elsevier Ltd.
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article