摘要
本文利用粒化膨润土复合吸附剂协同表面活性剂十六烷基三甲基氯化铵(CTAC)对甲基橙模拟废水进行脱色处理,主要考察了吸附剂及表面活性剂投加量、振荡时间、pH值、温度、甲基橙溶液初始浓度等对脱色效果的影响及膨润土复合吸附剂的再利用效果。研究结果表明:膨润土复合吸附剂协同表面活性剂十六烷基三甲基氯化铵对甲基橙溶液的最大脱色率为96%,脱色效率高;试验条件下甲基橙溶液初始浓度对脱色效果的影响不大,酸性条件更利于甲基橙的脱色处理,温度对脱色效果的影响较大;膨润土复合吸附剂经2次重复使用后其协同表面活性剂对甲基橙的脱色效果仍较佳;脱色处理过程以絮凝沉淀为主,并存在吸附作用,絮凝产物可通过固液分离方式从水体中脱除,因此,该处理方式工业应用前景良好。
Decolorizing treatment of methyl orange from simulated wastewater by using granular bentonite-based compound adsorbent cooperated with surfactant was carried out in this paper. The effect of dosage of surfactant and adsorbent, contact time, temperature and pH on the decolorizing rate was examined. And the reuse of adsorbent was also investigated. Results indicated that the decolorizing rate of methyl orange wastewater by applying above compound adsorbent and surfactant could be up to 96%. The initial concentration had little effect on its decolorizing rate while the solution temperature had great effect under the test condition. Acidic condition was better for the decolorizing treatment of methyl orange. The compound adsorbent could be reused for at least twice with higher removal capacity when cooperated with surfactant. During decolorizing treatment methyl orange could be removed mainly through flocculation together with a certain adsorption, so the above treatment method had a broad application prospects.
出处
《中国非金属矿工业导刊》
2014年第2期13-16,共4页
China Non-Metallic Minerals industry
基金
广西科技重大专项(桂科重1298002-5)
广西理工科学实验中心重点项目(LGZX201004)
关键词
膨润土复合吸附剂
表明活性剂
甲基橙
脱色处理
granular bentonite-based compound adsorbent
surfactant
methyl orange
decolorizing treatment
