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Effect of natural aging on biochar physicochemical property and mobility of Cd (II)

文献类型: 外文期刊

作者: Liu, Cenwei 1 ; Ye, Jing 1 ; Lin, Yi 1 ; Wu, Xiaomei 3 ; Price, G. W. 4 ; Wang, Yixiang 1 ;

作者机构: 1.Fujian Acad Agr Sci, Inst Resources Environm & Soil Fertilizer, Fuzhou 350003, Fujian, Peoples R China

2.Fujian Prov Key Lab Agroecol Proc Hilly Red Soil, Fuzhou 350003, Peoples R China

3.Fujian Acad Agr Sci, Inst Food Sci & Technol, Fuzhou 350003, Fujian, Peoples R China

4.Dalhousie Univ, Fac Agr, Truro, NS B2N 5E3, Canada

关键词: Natural aging; Biochar; Adsorption mechanism; Immobilization; Cadmium

期刊名称:SCIENTIFIC REPORTS ( 影响因子:3.9; 五年影响因子:4.3 )

ISSN: 2045-2322

年卷期: 2024 年 14 卷 1 期

页码:

收录情况: SCI

摘要: This project utilized both field experiment and laboratory analyses to address the gap in understanding regarding the alterations in properties and functions of biochar, and the impact of heavy metal passivation in soil over long-term natural field aging. The study aimed to examine the changes in the physical and chemical characteristics of biochar over an extended period of natural aging. Additionally, it sought to analyze the impact and mechanisms of biochar in reducing of the harmful effects of the heavy metal cadmium (Cd) during the aging process. Both original and aged biochar conformed to the pseudo-second-order kinetics model and the Langmuir model. The aging process enhanced the adsorption of Cd by biochar and mitigated the leaching of Cd2+ into the soil. These findings provide a scientific basis for evaluating biochar's environmental behavior and its potential use in the remediation of soil contaminated with heavy metals.

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