摘要
采用混合酸对粉煤灰进行改性,探究酸改性粉煤灰对磺胺二甲基嘧啶的最佳吸附条件。结果表明,在温度为30℃,25 mL浓度10 mg/L的磺胺二甲基嘧啶溶液,pH=6,吸附时间60 min的情况下,4 g酸改性粉煤灰对10 mg/L的磺胺二甲基嘧啶的吸附效果最好,去除率为89.85%。ΔG<0、ΔH>0、ΔS>0,吸附过程是一个自发、吸热、熵增加的过程。
The acid-modified fly ash was obtained by modifying the fly ash with mixed acid,the optimum adsorption conditions of sulfamethazine to the fly ash were observd.The results show that 4 g acid-modified fly ash has the best adsorption effect on 25 mL,10 mg/L sulfamethazine at a temperature of 30℃,pH=6 and adsorption time of 60 min.The removal rate is 89.85%.ΔG<0,ΔH>0,ΔS>0,the process of adsorption is one of spontaneous and endothermic entropy increase.
作者
凌琪
陶森森
伍昌年
陈嘉雄
LING Qi;TAO Sen-sen;WU Chang-nian;CHEN Jia-xiong(Key Laboratory of Anhui Province,Water Pollution Control and Wastewater Resources of Anhui Jianzhu University,Hefei 230601,China;School of Environment and Energy Engineering,Anhui Jianzhu University,Hefei 230601,China)
出处
《应用化工》
CAS
CSCD
北大核心
2020年第6期1363-1366,1371,共5页
Applied Chemical Industry
基金
国家水体污染控制与治理科技重大专项课题(2014ZX07405003)。
关键词
粉煤灰
酸改性
吸附
磺胺二甲基嘧啶
热力学
fly ash
acid modification
adsorption
sulfamethazine
thermodynamics
