CAJ | 학술논문

研究了Fenton氧化与CTS-ATP吸附协同工艺对炼化废水中苯酚的处理效果，探索了该工艺的最佳条件。结果表明，当苯酚初始浓度为93.2 mg/L，pH值为3.5，反应温度为20℃，H2O2投加量为12 mL/L，反应时间为20 min，FeSO4投加量为450 mg/L时，废水中苯酚的去除率为83.16%。在此基础上，当反应温度为40℃，CTS-ATP吸附剂的投加量为1 g/L，pH值为6时，吸附40 min后苯酚的去除率达99%以上。CTS-ATP对废水中苯酚的吸附符合Freundlich吸附等温方程。根据热力学函数关系计算出苯酚在CTS-ATP上的吸附焓变为2.21 kJ/mol，ΔG＜0，ΔS＞0，表明CTS-ATP对苯酚的吸附是一自发的熵增吸热过程。
연구료Fenton양화여CTS-ATP흡부협동공예대련화폐수중분분적처리효과，탐색료해공예적최가조건。결과표명，당분분초시농도위93.2 mg/L，pH치위3.5，반응온도위20℃，H2O2투가량위12 mL/L，반응시간위20 min，FeSO4투가량위450 mg/L시，폐수중분분적거제솔위83.16%。재차기출상，당반응온도위40℃，CTS-ATP흡부제적투가량위1 g/L，pH치위6시，흡부40 min후분분적거제솔체99%이상。CTS-ATP대폐수중분분적흡부부합Freundlich흡부등온방정。근거열역학함수관계계산출분분재CTS-ATP상적흡부함변위2.21 kJ/mol，ΔG＜0，ΔS＞0，표명CTS-ATP대분분적흡부시일자발적적증흡열과정。
Removal of phenol in petroleum refining industry wastewater by combination of Fenton reagent and attapulgite modified with chitosan was examined. The optimum technological condition of this process was determined.After 20min,the removal rate of phenol in petroleum refining industry wastewater reaches 83.16% when its initial concentration is 93.2mg/L, pH value is 3.5, temperature is 20℃, H2O2 and FeSO4 dosage is 12mL/L and 450mg/L, respectively. By the process of oxidation ifrst then adsorption, the removal rate of phenol in petroleum reifning industry wastewater reaches above 99.0 percent when pH value is 6.0, temperature is 40℃, attapulgite modiifed with chitosan dosage is 1.0g/L and adsorption time is 40min. The adsorption data of phenol onto attapulgite modiifed with chitosan iftted well to the Freundlich 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>0)and spontaneous(free energyΔG<0)process, with an increase in entropy(ΔS>0).