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改性膨润土处理煤化工脱酚氨废水的试验研究

Study on the Disposal of Coal Chemical Industry De-phenolic & Ammonia Wastewater by Modified Bentonite
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摘要 文章对辽宁黑山膨润土进行无机和有机改性,通过考察膨润土用量、吸附时间和pH等因素,系统的考察了改性膨润士对煤化工脱酚氨废水的处理效果,并通过红外和紫外光谱分析了改性膨润土对废水中污染物的吸附选择性。结果表明,十八烷基三甲基氯化铵改性后的膨润土对COD的去除率最大,可将COD从1600mg/L降到74mg/L左右。双烷基聚氧乙烯基三季铵盐对COD的去除率次之。最佳工艺条件为吸附时间5min,投加量6.5g/L,在实际废水的pH范围内,pH对吸附效果的影响不大。十八烷基三甲基氯化铵改性膨润土对200-270nm处有紫外吸收的物质具有更高的吸附选择性。 In the paper, the bentonite of Liaoning Heishan was modified by inorganic and organic methods. The effects of bentonite dosage, adsorption time and PH value on the de-phenolic & ammonia wastewater from coal chemical industry were investigated systemically. The adsorption selectivity of modified bentonite to wastewater was analyzed by IR and UV spectroscopy. The results showed that the best adsorbent is the octadecyl trimethyl ammonium chloride modified bentonite, followed by the dialkyl polyoxyethylene triammonium salt. The optimal conditions were as follows: adsorption time was 5 min, dosage was 6.5 g/L, pH value had little effect on the adsorption effect. The octadecyl trimethyl ammonium chloride modified bentonite has higher adsorption selectivity to substances that with UV-absorbing at 200-270 nm.
作者 陈琳 邱钰婷 林新 田冬梅 Chen Lin Qu Yuting Lin Xin Tian Dongmei(College of chemistry and chemical engineering, Shenyang normal university, Shenyang 110034, China)
出处 《广东化工》 CAS 2016年第22期124-126,共3页 Guangdong Chemical Industry
关键词 改性膨润土 GEMINI 脱酚氨废水 modified bentonite Gemini de-phenolic & ammonia wastewater
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