摘要
研究了石墨烯对水中钕的吸附效果。分别探究了吸附时间,初始pH,吸附剂使用量,初始钕浓度,温度对石墨烯吸附钕的影响,发现这5个因素均会影响吸附效果。实验探究结果表明,石墨烯吸附钕的最佳pH为9.98,较适温度为303K;在303K下,吸附达平衡所用时间为9h,吸附剂较适使用量为90mg,最适钕溶液的初始浓度为200mg/kg,在以上条件下石墨烯对钕的吸附率可达70%。
The adsorption effect of graphene for neodymium in water was studied.The effects of adsorption time,initial pH,adsorbent dosage,initial neodymium concentration and temperature on the adsorption of neodymium by graphene were investigated respectively.It was found that these five factors would affect the adsorption effect.The experimental results showed that the optimum pH for graphene to adsorb neodymium was 9.98 and the optimum temperature was 303 K.At 303 K,the time for equilibrium adsorption was 9 h,the optimum amount of adsorbent was 90 mg,and the optimum initial concentration of neodymium solution was 200 mg/kg.Under the above conditions,the adsorption rate of graphene to neodymium can reach 70%.
作者
胡宁洋
张诗浓
俞华斌
张芳佳
HU Ning-yang;ZHANG Shi-nong;YU Hua-bin;ZHANG Fang-jia(College of Chemistry and Chemical Engineering,Shaoxing University,Zhejiang Shaoxing 312000;Shaoxing Quality Technical Supervision and Testing Institute,Zhejiang Shaoxing 312000;Institute of Criminal Science and Technology of Shaoxing Public Security Bureau,Zhejiang Shaoxing 312000,China)
出处
《广州化工》
CAS
2019年第14期72-74,97,共4页
GuangZhou Chemical Industry
关键词
石墨烯
钕
吸附
偶氮胂Ⅲ
graphene
neodymium
adsorption
arsenazo
