Characteristics and adsorption properties of cotton-stalk derived biochars
A series of biochars were prepared by pyrolyzing cotton stalk at different carbonization temperature (300-700℃).The element composition and pore structure were characterized by elemental analyzer and BET surface area analyzer, and the adsorption capability of biochars for the removal of p-nitrotoluene from aqueous solution was evaluated.The results showed that the carbon content and aromaticity of the biochar produced from cotton stalk increased with the increase of pyrolysis temperature,whereas the polarity of biochar decreased.The micropore of biochar was suddenly developed and surface area was sharply enlarged when the carbonization temperature rised from 600℃ to 700℃.The pseudosecond-order kinetic equation could be used to better describe the sorption process of p-nitrotoluene onto biochar, while the adsorption isotherms was better fitted by langmuir equation, and the five kinds of biochars followed an order of CB700 > CB600 > CB500 > CB400 > CB300.
L.Yang X.Q.Zhou H.Deng D.F.Ma
College of Agriculture, Shihezi University, Shihezi, Xin Jiang, China School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xin Jiang, China
国际会议
The 2nd International Symposium on Land Reclamation and Ecological Restoration (第二届国际土地复垦与生态修复学术研讨会)
西安
英文
555-558
2017-10-20（万方平台首次上网日期，不代表论文的发表时间）