摘要
以氢氧化镁和活性炭为原料,在30℃条件下采用反应结晶技术制备了氢氧化镁改性活性炭材料(Mg-GAC),通过SEM、XRD对改性前后活性炭进行了表征,考察了温度、时间和pH对复合材料吸附废水中Cu(Ⅱ)的影响。结果表明,GAC经改性后,比表面积增至738.01 m^2/g。在Mg-GAC投加量为0.3 g、Cu(Ⅱ)质量浓度为0.04g/L、温度为25℃、pH为7的条件下反应2h,其吸附量达到11.66mg/g。Cu(Ⅱ)的吸附过程符合Langmuir等温模型,为单层吸附。
Magnesium hydroxide modified activated carbon(Mg-GAC)was prepared from magnesium hydroxide and activated carbon by reaction crystallization at 30℃.The activated carbon before and after modification was characterized by SEM and XRD.The effects of temperature,time and p H on the adsorption of Cu(Ⅱ)in wastewater were investigated.The results showed that the specific surface area increased to 738.01 m^2/g after modification of GAC.When Mg-GAC dosage was 0.3 g,mass concentration of Cu(Ⅱ)was 0.04 g/L,temperature was 25℃,pH was 7 and adsorption time was 2 h,the adsorption capacity reached 11.66 mg/g.The adsorption process of Mg-GAC for Cu(Ⅱ)conformed to the Langmuir isotherm model and the adsorption was a monolayer adsorption.
作者
李鑫璐
赵建海
王康
李文朴
Li Xinlu;Zhao Jianhai;Wang Kang;Li Wenpu(School of Environmental and Municipal Engineering,Tianjin Chengjian University,Tianjin 300384,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2020年第1期130-134,146,共6页
Fine Chemicals
基金
化学工程联合国家重点实验室开放基金(SKL-ChE-13C03).
关键词
改性
活性炭
氢氧化镁
Cu(Ⅱ)
吸附
水处理技术与环境保护
modification
activated carbon
magnesium hydroxide
Cu(Ⅱ)
adsorption
water treatment technology and environmental protection
