壳聚糖/粉煤灰复合材料的制备及应用研究  

Preparation and Application of Chitosan-Fly Ash Composite

作　　者：陈彰旭[1] 林俞敏[1] 许剑鹏[1] 温金明[1] 苏红瑜[1] 陈杰[1] 张世清[1] 

机构地区：[1]莆田学院环境与生物工程学院,福建省生态环境及其信息图谱重点实验室,福建莆田351100

出　　处：《非金属矿》2013年第5期76-78,共3页Non-Metallic Mines

基　　金：国家自然科学基金(21103095);福建省高校服务海西建设重点项目(2009HX11);福建省教育厅A类项目(JA12288);莆田市科技计划项目(2012G05)

摘　　要：利用正交试验研究壳聚糖/粉煤灰复合材料处理活性蓝模拟印染废水。结果表明,影响因素的大小顺序为pH值、投加量、处理温度、复合材料配比、搅拌时间,最佳操作工艺条件为:复合材料中壳聚糖与粉煤灰质量比1∶10,其投加量0.2g/60mL,活性蓝模拟印染废水质量浓度100 mg/L,pH值4.0,35下搅拌15 min,脱色率可达96.55%。复合材料对活性蓝模拟印染废水的吸附遵循Freundlich等温吸附式和准二级速率方程。壳聚糖/粉煤灰复合材料重复使用7次后,脱色率仍可达88.18%,可回收92.21%的活性蓝。Different types of chitosan/fly ash composites were prepared and were used for the adsorption of simulated dyeing wastewaters containing reactive blue by the orthogonal experiment. The results indicated that the effect on the removal reactive blue was in the following order： pH value, composite dosage, treating temperature, composite materials ratio, stirring time. Under the optimum conditions as the following： 0.2000 g of composite with mass ratio of chitosan and fly ash 1 ： 10 processing 60 mL100 mg/L simulated dyeing wastewaters containing reactive blue, the pH value of 4.00, under 35 ℃ stirring for 15 rain, the decolorization rate got up to 96.55%. The adsorption behaviors of the nanocomposite showed that the adsorption kinetics and isotherms were in good agreement with pseudo-second-order equation and the Freundlich equation, respectively. The deeolorization rate for reactive blue reached 88.18% and 92.21% reactive blue could be retrieved as the composite was recycled for seven times.

关 键 词：壳聚糖 粉煤灰 活性蓝 脱色率 

分 类 号：TB332[一般工业技术—材料科学与工程] X791[环境科学与工程—环境工程]