Author
Hong-Bo Li
Other affiliations: Chinese Academy of Sciences, Nanjing Agricultural University
Bio: Hong-Bo Li is an academic researcher from Nanjing University. The author has contributed to research in topics: Bioavailability & Medicine. The author has an hindex of 28, co-authored 79 publications receiving 2852 citations. Previous affiliations of Hong-Bo Li include Chinese Academy of Sciences & Nanjing Agricultural University.
Papers
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TL;DR: This review summarizes the characteristics of biochar (e.g., surface area, porosity, pH, surface charge, functional groups, and mineral components) and main mechanisms governing sorption of As, Cr, Cd, Pb, and Hg by biochar and includes competitive sorption mechanisms of co-existing metals.
1,091 citations
TL;DR: A framework combining land use type and bioaccessibility is recommended and thereby should be applied for the derivation of risk-based, site-specific soil guidelines.
393 citations
TL;DR: In this article, paddy soil slurries were incubated under anaerobic conditions for 60 days with and without the addition of biochar (3, w/w) prepared from rice straw at 500°C.
132 citations
TL;DR: Three assessment indices were not consistent with each other in terms of predicting environmental risks attributed to heavy metals in the freshwater surface sediments of this study, and it is recommended that risk assessment by SQGs should be revised according to availability and site specificity.
124 citations
TL;DR: It is suggested that UBM-GP assay has potential to determine Pb bioaccessibility in contaminated soils in China and strong correlation was found between PbBioaccessibility/Pb-RBA and the sum of exchangeable and carbonate fractions.
104 citations
Cited by
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TL;DR: This paper provides a comprehensive ecological and health risk assessment on the heavy metals in soils in Chinese industrial and agricultural regions and thus provides insights for the policymakers regarding exposure reduction and management.
1,019 citations
TL;DR: In this paper, a review of the preparation, characterization, modification, and especially environmental application of biochar, based on more than 200 papers published in recent 10 year, to provide an overview of Biochar with a particular on its environmental application.
1,017 citations
TL;DR: In this article, the concentration and chemical fractionation of globally alarming six heavy metals (Cr, Ni, Cu, As, Cd and Pb) were measured in surface water and sediment of an urban river in Bangladesh.
984 citations
TL;DR: This review focuses on and describes heavy metal contamination in soil-food crop subsystems with respect to human health risks, and explores the possible geographical pathways of heavy metals in such subsystems.
952 citations
TL;DR: In this article, the impact of pyrolysis temperature and the type of biomass on the physicochemical characteristics of biochar and its impact on soil fertility is discussed, and a review succinctly presents the impact.
Abstract: Biochar is a pyrogenous, organic material synthesized through pyrolysis of different biomass (plant or animal waste). The potential biochar applications include: (1) pollution remediation due to high CEC and specific surface area; (2) soil fertility improvement on the way of liming effect, enrichment in volatile matter and increase of pore volume, (3) carbon sequestration due to carbon and ash content, etc. Biochar properties are affected by several technological parameters, mainly pyrolysis temperature and feedstock kind, which differentiation can lead to products with a wide range of values of pH, specific surface area, pore volume, CEC, volatile matter, ash and carbon content. High pyrolysis temperature promotes the production of biochar with a strongly developed specific surface area, high porosity, pH as well as content of ash and carbon, but with low values of CEC and content of volatile matter. This is most likely due to significant degree of organic matter decomposition. Biochars produced from animal litter and solid waste feedstocks exhibit lower surface areas, carbon content, volatile matter and high CEC compared to biochars produced from crop residue and wood biomass, even at higher pyrolysis temperatures. The reason for this difference is considerable variation in lignin and cellulose content as well as in moisture content of biomass. The physicochemical properties of biochar determine application of this biomaterial as an additive to improve soil quality. This review succinctly presents the impact of pyrolysis temperature and the type of biomass on the physicochemical characteristics of biochar and its impact on soil fertility.
849 citations