摘要
通过静态吸附实验探究了氧化铜纳米颗粒(CuO NPs)在土壤中的吸附特性,包括其初始浓度、土壤性质以及pH值值对土壤吸附CuO NPs的影响,并探索了共存的有机污染物(菲)和CuO NPs之间的相互作用以及菲对土壤吸附CuO NPs的影响.结果表明,CuO NPs在土壤中的吸附过程符合伪二级反应动力学模型;腐殖酸和有机质对CuO NPs的溶解和稳定作用使得土壤对CuO NPs的吸附量较低;pH值为中性的条件下,土壤对CuO NPs的吸附量最低;菲的存在占据了部分吸附位点而降低了土壤对CuO NPs的吸附量,初始浓度为30和50mg/L的CuO NPs的平衡吸附量分别降低了37.3%和24.7%,但菲的存在并不影响土壤对CuO NPs的吸附过程.
The adsorption characteristics of CuO NPs in soil were investigated by static adsorption experiments.The effects of CuO NPs initial concentration,soil with different properties and pH on soil adsorption of CuO NPs were explored,and the interactions between co-existing organic pollutants(phenanthrene)and CuO NPs and the effects of phenanthrene on soil adsorption of CuO NPs were clarified.The results showed that the adsorption of CuO NPs in soil was in accordance with the pseudo-secondary reaction kinetic model.The dissolution and stabilization of CuO NPs by humic acid and organic matter resulted in low adsorption of CuO NPs by soil.The lowest adsorption of CuO NPs by soil occurred at neutral pH.The presence of phenanthrene occupied some adsorption sites and thus reduced the adsorption of CuO NPs by soil,and the equilibrium adsorption of CuO NPs at initial concentrations of 30 and 50mg/L decreased by 37.3% and 24.7%,respectively,but the presence of phenanthrene did not affect the adsorption process of CuO NPs.
作者
陈晓晨
张春鹏
袁梓芮
王锴瑜
张剑宇
杨朝格
CHEN Xiao-chen;ZHANG Chun-peng;YUAN Zi-rui;WANG Kai-yu;ZHANG Jian-yu;YANG Chao-ge(Key Laboratory of Groundwater Resources and Environment,Jilin University,Changchun 130021,China;Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology,College of Environment and Safety Engineering,Fuzhou University,Fuzhou 350108,China;Jiangsu Longchang Chemical Co.,Ltd.,Rugao 226532,China)
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2023年第8期4121-4126,共6页
China Environmental Science
基金
国家重点研发计划课题(2022YFC3702205)
国家自然科学基金青年项目(42107483)
地下水资源与环境教育部重点实验室开放课题(202105004KF)
福州大学贵重仪器设备开放测试基金资助项目(2023T014)。
关键词
纳米颗粒
氧化铜
土壤
吸附
影响因素
nanoparticle particles
copper oxide
soil
sorption
influencing factors
