改性纳米零价铁降解水中三氯乙烯  

Degradation of Trichloroethylene from Water by Modified Nano-zero-valent Iron

作　　者：詹聪 ZHAN Cong(Energy Research Institute of Jiangxi Academy of Sciences,Jiangxi Nanchang 330012,China)

机构地区：[1]江西省科学院能源研究所,江西南昌330012

出　　处：《广州化工》2020年第22期51-53,113,共4页GuangZhou Chemical Industry

摘　　要：采用液相还原法合成了Fe/Ni纳米颗粒,再通过原子转移自由基聚合法制备了聚丙烯酸-聚苯乙烯包埋NZVI复合材料(PAA-b-PS@Fe/Ni),并研究了PAA-b-PS稳定NZVI对水中三氯乙烯的去除效果。实验结果表明:PAA-b-PS包埋后的NZVI具有优越的抗氧化性能,其对三氯乙烯的去除效率要优于Fe/Ni;温度为25℃,三氯乙烯初始浓度C 0=120 mg/L时,PAA-b-PS@Fe/Ni投加量为0.4 g/L对三氯乙烯的去除效果最好,其最大去除率达到99.9%。Fe/Ni nanoparticles were synthesized by liquid phase reduction method,and the polyacrylic acid-polystyrene covered nZVI composites(PAA-b-PS@Fe/Ni)were prepared by atom transfer radical polymerization,and the removal effect of trichloroethylene in water by PAA-b-PS stabilized nZVI was studied.The characterization results showed that PAA-b-PS@Fe/Ni had superior oxidation resistance,and its removal efficiency for trichloroethylene was better than that of Fe/Ni.99.9%of trichloroethylene was removed from water containing 120 mg/L trichloroethylene within 60 min using 0.4 g/L PAA-b-PS@Fe/Ni composites at pH 7.0 and 25℃.

关 键 词：PAA-b-PS@Fe/Ni 三氯乙烯 抗氧化性 

分 类 号：X523[环境科学与工程—环境工程]