A comparative study of thermochemical and cold plasma treatment on lignin-based activated carbon for adsorbing Fe(III)

作者：Shi, Shukai; Wang, Xin; Chen, Weimin; Chen, Minzhi^*; Zhou, Xiaoyan^*

来源：Materials Research Express, 2018, 5(5): 055602.

DOI：10.1088/2053-1591/aac232

• activated carbon
• cold plasma
• urea-modified
• Fe(III) ions adsorbed
• kinetic

The as-prepared lignin-based activated carbon (LAC) was post-treated by urea and radio-frequency cold plasma separately. The obtained results demonstrated that the BET surface and total volumes of the LAC and plasma-treated LACs were greater than the urea-modified sample. The analysis of surface elemental composition showed that the nitrogen content of urea-modified LAC and nitrogen plasma-treated LAC are 3.79% and 2.62% higher than that of original LAC respectively, while the oxygen content of air plasma-treated LAC is 10.23% higher than that of original LAC. The Fe(III) ions adsorbed studies with pseudo-second order kinetic model revealed that urea-modified LAC had faster chemisorption rates while air plasma-treated LAC had larger adsorption capacity within 3 h. Moreover, the adsorption capacity and chemisorption rates of LAC post-treated by nitrogen plasma are inferior to the air plasma-treated LAC.

• 出版日期2018-5
• 单位南京林业大学