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文章摘要
两性磁化炭添加比例对河流沿岸土吸附Cu2+的影响
Effect of Amphoteric Magnetized Biochar Addition Ratio on Cu2+ Adsorption in Riverbank Soils
  
DOI:
中文关键词: Cu2+  两性磁化炭  吸附量  嘉陵江  河流沿岸土
英文关键词: Cu2+  Amphoteric magnetized biochar  Adsorption amount  Jialing River  Riverbank soil
基金项目:国家自然科学基金资助项目(41271244);四川省教育厅基金资助项目(18ZB0576);四川省科技厅基金资助项目(2018JY0224);南充市科技局基金资助项目(19YFZJ010G)
作者单位
张乂方 西华师范大学环境科学与工程学院 
李文斌 西华师范大学环境科学与工程学院 
朱浪 西华师范大学环境科学与工程学院 
谢佳 西华师范大学环境科学与工程学院 
邓红艳 西华师范大学环境科学与工程学院 
任丽平 西华师范大学环境科学与工程学院 
孟昭福 西北农林科技大学资源环境学院 
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中文摘要:
      将两性(十二烷基二甲基甜菜碱)修饰磁化炭分别以质量分数0、1%和2%加入嘉陵江流域(川渝段)内苍溪(CX)、南部(NB)、嘉陵(JL)和合川(HC)沿岸土中,考察各混合土样对Cu2+的等温吸附和热力学特征。结果表明:混合土样对Cu2+的最大吸附量为58.36 mmol/kg~366.85 mmol/kg,添加等量两性磁化炭时各〖JP3〗混合土样对Cu2+吸附量表现为JL>NB>CX>HC的趋势,且添加比越高吸附能力越强。各混合土样对Cu2+的吸附为自发、吸热和熵增的反应过程,对Cu2+的吸附量与温度和pH值均呈正相关关系。当离子强度为0.1 mol/L时,各混合土样(除HC外)对Cu的吸附量最大。
英文摘要:
      Amphoteric(dodecyl dimethyl betaine) modified magnetized biochar was added into the riverbank soils in Cangxi (CX), Nanbu (NB), Jialing(JL) and Hechuan (HC)along the Jialing River by 0, 1% and 2% mass ratio. The adsorption isotherms and thermodynamic characteristics of Cu2+in each mixed soil sample were studied. The results indicated that the maximum Cu2+adsorption amount in mixed soil samples were between 58.36 mmol/kg and 366.85 mmol/kg. Cu2+ adsorption had a trend of JL> NB>CX>HC when adding equivalent amphoteric magnetized biochar to each mixed soil sample. The adsorption capacity increased as the addition ratio increased. The adsorption of Cu2+ in each mixed soil sample was a spontaneous, endothermic and entropy increase reaction process. Cu2+ adsorption was positively correlated with temperature and pH value. When ion strength was 0.1 mol/L, the adsorption amount of Cu2+ in each mixed sample (except HC) was the largest.
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