摘要
研究了 β 萘磺酸废水中 β 萘磺酸、H2 SO4、H2 SO3 单组分吸附平衡 ,并以Langmuir、Freundlich模型对其进行模拟 .吸附过程的热力学计算及分析结果表明 ,吸附过程为放热的化学吸附过程 ,吸附量顺序为H2 SO4>NSA >H2 SO3 ,推动力大小顺序为H2 SO4>NSA >H2 SO3 ,吸附过程熵增加 .以D30 1R弱碱性树脂为吸附剂 ,可有效地实现三者的分离 .
Equilibrium of single component adsorption for β-naphthalenesulphonic acid, sulfuric acid and sulfurous acid from β-naphthalenesulphonic acid wastewater was studied, and the single-solute adsorption data were fitted to the Langmuir and Freundlich models. It could be found from thermodynamic calculation and analysis results that adsorption was a chemical adsorption, adsorption affinity of various acids was H2SO4>NSA H2SO3, and adsorption force between resin and acids was H2SO4>NSA H2SO3 and entropy was increasing in the course of adsorption. The separation operation could be effectively carried out for these acids based on weakly basic resin D301R.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2004年第7期1117-1123,共7页
CIESC Journal
基金
吉林省科学技术发展基金资助项目 (No 990 3 3 7)~~
关键词
吸附
平衡
弱碱性树脂
Adsorption
Chemicals removal (water treatment)
Entropy
Ion exchange resins
Sulfuric acid
Thermodynamics
