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Insights into thallium adsorption onto the soil,bamboo-derived biochar,and biochar amended soil in Pomelo orchard

Biochar 2021年第3期3卷 315-328页

作者： Alexis Kayiranga Zhuanxi Luo Jean Claude Ndayishimiye François Nkinahamira Eric Cyubahiro Theogene Habumugisha Changzhou Yan Jianhua Guo Zhuo Zhen Alexandre Tuyishimire Hildebrand Didier Izabayo Institute of Urban Environment Chinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China College of Chemical Engineering Huaqiao UniversityXiamen 361021China College of Agricultural Animal Science and Veterinary Medicine(UR-CAVM)University of RwandaButareRwanda

Little information is available on thallium(Tl)adsorption onto biochar amended soil for a relatively long *** this study,bamboo-derived biochar(BDB),soil in pomelo orchard(SP),and biochar amended soil in pomelo orchard(BSP)were thus used to evaluate the potential remediation of thallium(Tl)using batch-adsorption ***,we characterized the above-mentioned sorbents’properties related to Tl adsorption to understand Tl’s adsorption *** results showed that BDB,SP,and BSP achieved equilibrium adsorption capacity of 96.9,95.43,and 96.76%,respectively,within the initial 15 *** means that compared to other sorbents,BSP exhibited an efficient sorbent for Tl remediation even when applied in the agricultural field for one ***-layer adsorption played a dominant role in the adsorption of Tl,which was supported by the suitability of Freundlich model for describing the adsorption behavior of Tl onto the selected *** addition,the pseudo-second kinetic order models strongly fitted Tl’s adsorption onto BDB,SP,and BSP,indicating that the process was accompanied by chemical *** on the surface of BDB by a Fourier Transform Infrared Spectrometer(FTIR)and an X-ray photoelectron spectroscopy(XPS),the presence of O-H groups and PO_(4)^(3−)might promote chemical adsorption of Tl onto ***,these findings can provide insights into comprehensively developed bamboo-derived biochar technology to remediate Tl contamination in agricultural soils.

关键词： Bamboo-derived biochar Pomelo orchard Thallium adsorption Soil remediation long term application

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