大孔树脂RD-100静态吸附废水中邻硝基氯苯和邻硝基苯酚OA
Static adsorption of 2-nitrochlorobenzene and 2-nitrophenol from wastewater by macroporous resin RD-100
为了从生产1-羟基苯并三氮唑的废水中去除邻硝基氯苯(OCNB)和邻硝基苯酚(ONP),比较了6种大孔吸附树脂的吸附性能,筛选出吸附能力最优的大孔吸附树脂 RD-100.静态吸附动力学研究显示,该树脂对 OCNB 和 ONP的吸附动力学符合准一级模型,吸附过程符合 Freundlich 模型,即为多分子层吸附过程,对 OCNB 和 ONP 的最大理论吸附量分别为1 087.0 mg·g-1 和 574.7 mg·g-1.热力学研究表明,树脂吸附 OCNB 为吸热过程(ΔH=88.5 kJ·mol-1),吸附 ONP为放热过程(ΔH=-2.1 kJ·mol-1),静态吸附循环再生 6次后吸附容量仅衰减 5.5%(OCNB)和 6.2%(ONP).单组分动态吸附的穿透点(Ct/C0=5%)为420 min(ONP)和580 min(OCNB).
Among the six kinds of macroporous adsorption resin,the RD-100 was screen out with the best adsorption capacity to remove o-nitrochlorobenzene(OCNB)and o-nitrophenol(ONP)from the wastewater of 1-hydroxybenzotriazole producing.The static adsorption kinetics study showed that the adsorption kinetics of the resin RD-100 for OCNB and ONP conformed to the pseudo-first-order model,and the adsorption process conformed to the Freundlich model,that is a multi-molecular layer adsorption.The maximum theoretical adsorption capacities of the resin for OCNB and ONP were 1 087.0 mg·g-1 and 574.7 mg·g-1,respectively.The thermodynamic study indicated that the adsorption of OCNB by the resin RD-100 was an endothermic process while the adsorption of ONP was an exothermic proces and,their adsorption enthalpies were 88.5 kJ·mol-1 and-2.1 kJ·mol-1,respectively.After six cycles of static adsorption and regeneration,the adsorption capacity only decreased by 5.5%(OCNB)and 6.2%(ONP).For single-component dynamic adsorption,the breakthrough points(Ct/C0=5%)were 420 min for ONP and 580 min for OCNB.The results suggest that the resin RD-100 can effectively adsorb OCNP and ONP from wastewater.
刘堂林;彭阳峰;赵红亮;童天中
华东理工大学 化工学院,上海 200237华东理工大学 化工学院,上海 200237华东理工大学 化工学院,上海 200237华东理工大学 化工学院,上海 200237
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大孔吸附树脂RD-100邻硝基氯苯邻硝基苯酚吸附废水处理
macroporous resin RD-100o-nitrochlorobenzeneo-nitrophenoladsorptionwastewater treatment
《高校化学工程学报》 2026 (3)
603-612,10
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