HNO_(3)和NaOH改性椰壳活性炭吸附性能研究  

Study on the adsorption performance of HNO_(3) and NaOH modified coconut shell activated carbon

作　　者：罗枫 黄帮福[1,2] 李建立 王卓[1,2] 王春良 汪德富 LUO Feng;HUANG Bangfu;LIJianli;WANG Zhuo;WANG Chunliang;WANG Defu(Faculty School of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;Clean Metallurgy Key Laboratory of Complex Iron Resources,University of Yunnan Province.Kunming 650093,China;Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093 [2]云南省高校复杂铁资源清洁冶金重点实验室,云南昆明650093 [3]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081

出　　处：《粉末冶金工业》2022年第3期81-85,共5页Powder Metallurgy Industry

基　　金：云南省应用基础研究计划面上项目(2019FB077,202001AT070029);钢铁冶金及资源利用省部共建教育部重点实验室开放基金(FMRUlab-20-4)。

摘　　要：为提高活性炭吸附性能,对椰壳活性炭进行HNO_(3)和NaOH改性,测定改性前后椰壳活性炭碘吸附值,研究表明:HNO_(3)改性后椰壳活性炭的碘吸附值降低20.81%;NaOH改性后椰壳活性炭的碘吸附值提高4.48%;两种改性方法对椰壳活性炭的总体吸附能力都有所改变,NaOH改性还可增强活性炭表面非极性和疏水性,改变表面化学性质,使NaOH改性的椰壳活性炭吸附能力比HNO_(3)改性活性炭更强。相关研究成果可为活性炭净化工业烟气NO_(3)和SO_(2)提供参考。In order to improve the adsorption performance of activated carbon, coconut shell activated carbon was modified with nitric acid and sodium hydroxide. The iodine adsorption value of coconut shell activated carbon before and after modification was measured. The study shows that the iodine adsorption value of coconut shell activated carbon after nitric acid modification is reduced by 20.81%;After sodium hydroxide modification, the iodine adsorption value of coconut shell activated carbon is increased by 4.48%;the two modification methods have changed the overall adsorption capacity of coconut shell activated carbon, and NaOH modification can also enhance the non-polar and hydrophobic surface of the activated carbon. By changing the surface chemistry, the adsorption capacity of coconut shell activated carbon modified by sodium hydroxide is stronger than that of nitric acid modified activated carbon. Related research results can provide reference for the use of activated carbon to treat NO_(3) and SO_(2) in industrial flue gas.

关 键 词：HNO_(3) NAOH 椰壳活性炭 碘吸附值 吸附性能 

分 类 号：X701[环境科学与工程—环境工程] TQ424.1[化学工程]