摘要
[Objective]We aimed to study the preparation methods of impurely irrigated soil adsorbent from beaches,as well as its ability to absorb phenol.[Method]Using hydrochloric acid as activator,we compared the influences of various soil adsorbents on the adsorption of phenol through the desired orthogonal tests where the usage of saw dust,concentration of hydrochloric acid,liquid-solid ratio and carbonization temperature varied.Afterwards,we characterized this soil adsorbent.[Result]The optimal conditions for preparing the soil adsorbent were as follows,that is,the usage of saw dust was 20%,concentration of HCl was 1 mol /L,the ratio of liquid to solid was 2:1,carbonization temperature was 500 ℃,and activation time was one hour,the absorption efficiency of phenol in water by the soil adsorbent reached above 90%.Characterization showed that the prepared soil adsorbent changed obviously in the structure,that is,soil pores and carbon content increased greatly,as well as its absorption efficiency.[Conclusion]The prepared soil adsorbent by this method greatly improved the absorption efficiency of phenol in water,which provided a novel method for the reasonable utilization of saw dust,with good prospects.
[Objective]We aimed to study the preparation methods of impurely irrigated soil adsorbent from beaches,as well as its ability to absorb phenol.[Method]Using hydrochloric acid as activator,we compared the influences of various soil adsorbents on the adsorption of phenol through the desired orthogonal tests where the usage of saw dust,concentration of hydrochloric acid,liquid-solid ratio and carbonization temperature varied.Afterwards,we characterized this soil adsorbent.[Result]The optimal conditions for preparing the soil adsorbent were as follows,that is,the usage of saw dust was 20%,concentration of HCl was 1 mol /L,the ratio of liquid to solid was 2:1,carbonization temperature was 500 ℃,and activation time was one hour,the absorption efficiency of phenol in water by the soil adsorbent reached above 90%.Characterization showed that the prepared soil adsorbent changed obviously in the structure,that is,soil pores and carbon content increased greatly,as well as its absorption efficiency.[Conclusion]The prepared soil adsorbent by this method greatly improved the absorption efficiency of phenol in water,which provided a novel method for the reasonable utilization of saw dust,with good prospects.
作者
DONG Mao-mao 1,2,TANG Fan 3,FEI Zheng-hao 2,QIAN Xiao-rong 3 1.Yancheng Environmental Monitoring Center,Yancheng 224000,China
2.Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection,Yancheng Teachers University,Yancheng 224002,China
3.Chemical and Biological Engineering College,Yancheng Institute of Technology,Yancheng 224003,China
基金
Supported by Open Foundation of Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection (JL-CBE09004)
