The preparation of paddy soil amendment using granite and marble waste: Performance and mechanisms

作     者：Tao Chen Lianxin Duan Sheng Cheng Shaojun Jiang Bo Yan Tao Chen;Lianxin Duan;Sheng Cheng;Shaojun Jiang;Bo Yan

作者机构：SCNU Environmental Research InstituteGuangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety&MOE Key Laboratory of Theoretical Chemistry of EnvironmentSouth China Normal UniversityGuangzhou 510006China School of EnvironmentSouth China Normal UniversityUniversity TownGuangzhou 510006China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2023年第127卷第5期

页      面：564-576页

核心收录：

学科分类：12[管理学] 1204[管理学-公共管理] 082803[工学-农业生物环境与能源工程] 082802[工学-农业水土工程] 08[工学] 0828[工学-农业工程] 0818[工学-地质资源与地质工程] 0903[农学-农业资源与环境] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 120405[管理学-土地资源管理] 

基　　金：supported by the National Natural Science Foundation of China(Nos.42177196 U1901218 and 42077324) 

主　　题：Granite and marble waste Soil contamination Soil amelioration Heavy metal immobilization 

摘      要：The wastes generated from themining and processing of granite and marble stone are generally regarded as ***,these waste materials were used as the soil amendments for the first *** functional groups,crystalline structure andmicro-morphology of granite and marble wastes amendments(GMWA)were different from the original wastes demonstrated by X-ray diffractometer(XRD),Fourier transform infrared spectrometer(FTIR)and Scanning electron microscope-energy dispersive spectrometer(SEM-EDS)*** the addition of the amendments,the cation exchange capacity,electrical conductivity and nutrient availability of the soil increased,and the extractable heavy metals of the soil reduced *** the condition of the addition of 3%amendments,7.0%,99.9%,99.7%and 70.5%of Cu,Pb,Zn and Cd in exchangeable fractions in soil were transformed to the more stable Fe-Mn oxides-or carbonates-bounded *** method and correlation analysis showed that the reduction of extractable metals in the acidic paddy soil can be attributed to the adsorption of available SiO_(2),the co-precipitation induced by the elevated pH value,the complexation induced by Fe-Mn oxides and the cation exchange induced by mineral *** study provides a new strategy for resource recovery of waste stones and remediation of heavy metal-contaminated soil.