农业环境科学学报2026，Vol.45Issue(5)：1148-1156,9.DOI:10.11654/jaes.2025-0722
活性炭负载氢氧化钙协同调控甘蔗田pH和Cd吸附
Synergistic regulation of soil pH in sugarcane fields and Cd adsorption by an activated carbon-calcium hydroxide composite
摘要
Abstract
To address the concurrent issues of soil acidification and Cd contamination in sugarcane fields,a porous calcium-hydroxide-loaded activated-carbon composite(AC&Ca(OH)2)was developed using commercial activated carbon as a support.The structure and morphology of the composite were systematically characterized using Fourier transform infrared(FTIR)spectroscopy,scanning electron microscopy(SEM),and Brunauer-Emmett-Teller(BET)surface area and porosity analysis.Furthermore,the effects of the calcium hydroxide loading in the composite and the composite dosage on soil pH and bioavailable Cd concentration were examined.Results indicate that the AC&Ca(OH)2 composite successfully incorporated calcium hydroxide and exhibited abundant surface-active sites.At a mass ratio of activated carbon to calcium hydroxide of 1∶0.5 with an addition amount of 2.0％,the soil pH increased from 4.35±0.01 to 7.23±0.02,and the removal rate of bioavailable Cd reached 39.4％±1.0％.Under these optimal conditions,the soil pH fell within the optimal range for sugarcane growth,and the bioavailable Cd content was significantly reduced.Adsorption kinetics and isotherm analyses demonstrated that Cd adsorption by AC&Ca(OH)2 followed the pseudo-second-order kinetic model(R2＞0.99)and the Freundlich isotherm model(R2＞0.97),indicating that the adsorption process was primarily governed by chemisorption mechanisms and exhibited multilayer heterogeneous surface adsorption characteristics.The AC&Ca(OH)2 composite and its application strategy presented in this study provide an effective approach for the co-remediation of Cd-contaminated acidic soils.关键词
活性炭复合材料/土壤酸度调控/有效态Cd/协同效应Key words
activated carbon composite material/adjustment of soil acidity/bioavailable Cd/synergistic effect分类
化学化工引用本文复制引用
陈碧,谢欣欣,莫辉旺,蒋旺程,王小明..活性炭负载氢氧化钙协同调控甘蔗田pH和Cd吸附[J].农业环境科学学报,2026,45(5):1148-1156,9.基金项目
广西糖资源工程技术研究中心(桂科AD16450040) （桂科AD16450040）
广西高校制糖工程综合技术重点实验室(桂教科研[2016]6号) （桂教科研[2016]6号）
广西科技师范学院科研基金项目(GXKS2023ZDB010) （GXKS2023ZDB010）
大学生创新创业训练计划项目(S202211546073) （S202211546073）
食品资源与生物大健康技术创新中心(GXKSKYPT2025010)Guangxi Sugar Resources Engineering Technology Research Center(AD 16450040) （GXKSKYPT2025010）
Guangxi Key Laboratory of Comprehensive Technology for Sugar Engineering([2016]6) （[2016]6）
Guangxi Science & Technology Normal University Scientific Research Fund Project(GXKS2023ZDB010) （GXKS2023ZDB010）
National College Student Innovation and Entrepreneurship Training Project(S202211546073) （S202211546073）
Innovations in Food Resources and Biobased Health Technology(GXKSKYPT2025010) （GXKSKYPT2025010）
