CAJ | 학술논문

研究了壳聚糖改性凹凸棒(CTS-ATP)对废水中苯酚的吸附效果，探索了该工艺的最佳条件。结果表明，当反应温度为40℃，CTS-ATP吸附剂的投加量为10 g/L，pH值为6时，吸附30 min后苯酚的去除率达90%以上。CTS-ATP对废水中苯酚的吸附符合Langmuir吸附等温方程。根据热力学函数关系计算出苯酚在CTS-ATP上的吸附焓变ΔH为95.13 J/mol，自由能变ΔG小于0，熵变ΔS大于0，表明CTS-ATP对苯酚的吸附是一自发的熵增吸热过程。
연구료각취당개성요철봉(CTS-ATP)대폐수중분분적흡부효과，탐색료해공예적최가조건。결과표명，당반응온도위40℃，CTS-ATP흡부제적투가량위10 g/L，pH치위6시，흡부30 min후분분적거제솔체90%이상。CTS-ATP대폐수중분분적흡부부합Langmuir흡부등온방정。근거열역학함수관계계산출분분재CTS-ATP상적흡부함변ΔH위95.13 J/mol，자유능변ΔG소우0，적변ΔS대우0，표명CTS-ATP대분분적흡부시일자발적적증흡열과정。
Removal of phenol in wastewater by attapulgite modified with chitosan was examined. The optimum technological condition of this process was determined. The removal rate of phenol in wastewater reaches above 90.0% when pH value is 6.0, temperature is 40℃, attapulgite modiifed with chitosan dosage is 10.0 g/L and adsorption time is 30 min. The adsorption data of phenol onto attapulgite modiifed with chitosan iftted well to the Langmuir isotherm. The adsorption enthalpy changes, Gibbs free energy changes and entropy changes were calculated according to the relationship of the thermodynamic function. The results indicate that the adsorption of phenol onto attapulgite modiifed with chitosan is an endothermic (enthalpy ΔH=95.13 J/mol) and spontaneous (free energy ΔG<0) process, with an increase in entropy (ΔS>0).