| 化学预处理对微塑料Pb吸附潜力的影响及机理研究 |
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| 引用本文： | 赵楚云,李小伟,张鸿元,陈璐蓓,纪艳艳,李政章,丁国际,董滨,戴晓虎.化学预处理对微塑料Pb吸附潜力的影响及机理研究[J].环境科学学报,2019,39(10):3387-3394. |
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| 作者姓名： | 赵楚云 李小伟 张鸿元 陈璐蓓 纪艳艳 李政章 丁国际 董滨 戴晓虎 |
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| 作者单位： | 上海大学环境与化学工程学院,有机复合污染控制工程教育部重点实验室,上海200444;同济大学环境科学与工程学院,上海,200092 |
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| 基金项目： | 国家重点研发计划"固废资源化"重点专项（No.2018YFC1903201）;国家自然科学基金（No.51408423,51578397,51538008）;国际科技合作重点项目（No.2016YEF0123500）;国家重大水污染控制专项课题（No.2017ZX07403002）;国家级大学生创新创业训练计划（No.201710280026） |
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| 摘 要： | 污水和污泥是土壤等生态环境中微塑料的重要来源,受到人们的广泛关注.由于污水和污泥中含有大量的有机质,化学预处理通常被用于提高其中微塑料的提取及分析效率,然而至今关于化学预处理对微塑料的吸附潜力及表面理化特性的影响研究较少.本研究探讨了5种预处理条件,即1 mol·L~(-1) HCl、1 mol·L~(-1) HNO_3、30%H_2O_2、1 mol·L~(-1) NaOH和5 mol·L~(-1) NaOH,对6种微塑料类型(PA、PE、PP、PS、PET和PMMA)Pb吸附潜力的影响,同时通过微塑料表面理化特性的分析,探讨了预处理影响微塑料Pb吸附的机理.结果表明6种微塑料对Pb吸附等温式符合Langmuir模型,Pb吸附能力大小顺序分别为:PAPMMAPETPEPPPS,最大吸附量分别为2922.9、699.3、584.8、549.5、510.2和277.8μg·g~(-1).与此同时,不同预处理条件对微塑料Pb吸附特性的影响不同,总体而言,碱预处理会导致微塑料Pb吸附量增加,且随着碱处理浓度的增加而增加,而酸预处理会引起Pb吸附量减小,其中硝酸预处理作用更加显著.进一步分析预处理前后微塑料质量、尺寸、表面官能团及表面形态等的变化情况,发现碱预处理对微塑料的腐蚀作用最大,其次为硝酸预处理组,最后为盐酸和过氧化氢预处理组.此外,与玻璃型(如PS)微塑料相比,预处理对橡胶型微塑料(如PE)的影响更大.
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| 关 键 词： | 微塑料 污泥 预处理 吸附特性 理化特征 |
| 收稿时间： | 2019/6/20 0:00:00 |
| 修稿时间： | 2019/7/30 0:00:00 |
Effect of chemical pretreatment on adsorption of microplastics to Pb |
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| ZHAO Chuyun,LI Xiaowei,ZHANG Hongyuan,CHEN Lubei,JI Yanyan,LI Zhengzhang,DING Guoji,DONG Bin and DAI Xiaohu.Effect of chemical pretreatment on adsorption of microplastics to Pb[J].Acta Scientiae Circumstantiae,2019,39(10):3387-3394. |
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| Authors: | ZHAO Chuyun LI Xiaowei ZHANG Hongyuan CHEN Lubei JI Yanyan LI Zhengzhang DING Guoji DONG Bin and DAI Xiaohu |
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| Institution: | School of Environmental and Chemical Engineering, Organic Compound Pollution Control Engineering, Ministry of Education, Shanghai University, Shanghai 200444,School of Environmental and Chemical Engineering, Organic Compound Pollution Control Engineering, Ministry of Education, Shanghai University, Shanghai 200444,School of Environmental and Chemical Engineering, Organic Compound Pollution Control Engineering, Ministry of Education, Shanghai University, Shanghai 200444,School of Environmental and Chemical Engineering, Organic Compound Pollution Control Engineering, Ministry of Education, Shanghai University, Shanghai 200444,School of Environmental and Chemical Engineering, Organic Compound Pollution Control Engineering, Ministry of Education, Shanghai University, Shanghai 200444,School of Environmental and Chemical Engineering, Organic Compound Pollution Control Engineering, Ministry of Education, Shanghai University, Shanghai 200444,School of Environmental and Chemical Engineering, Organic Compound Pollution Control Engineering, Ministry of Education, Shanghai University, Shanghai 200444,School of Environmental Science and Engineering, Tongji University, Shanghai 200092 and School of Environmental Science and Engineering, Tongji University, Shanghai 200092 |
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| Abstract: | |
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| Keywords: | microplastics sewage sludge pretreatment adsorption characteristics physicochemical characteristics |
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