垃圾焚烧飞灰对染料(亚甲基蓝)的吸附性能  

Adsorption properties of municipal solid waste incineration fly ash for dye( methylene blue)

作　　者：李夫振[1] 周少奇[2,3] 黎强[1] 林奕明[2] 

机构地区：[1]华南理工大学土木与交通学院,广州510640 [2]华南理工大学环境科学与工程学院,广州510006 [3]亚热带建筑科学国家重点实验室,广州510640

出　　处：《环境工程学报》2013年第10期4072-4078,共7页Chinese Journal of Environmental Engineering

基　　金：国家科技支撑计划项目(2008BAE64B05);广东省粤港招标项目(2007A032500005);亚热带建筑科学国家重点实验室项目(2010ZB04;2011ZB08)

摘　　要：以垃圾焚烧飞灰为吸附剂对亚甲基蓝进行了吸附脱色实验。主要探讨了飞灰粒径、用量、温度、pH值和初始浓度等因素对亚甲基蓝吸附的影响，同时分析了吸附上清液中重金属Pb和Cr的浸出毒性。研究结果表明，在25—45℃、pH值2～12、飞灰用量1～5g范围内，经过180min吸附，亚甲基蓝的脱色率都达75％以上，最高可达99．46％。实验还得出，除重金属Pb外，吸附上清液中重金属的浸出量远远低于《危险废物鉴别标准浸出毒性鉴别》的限定值。因此，若能降低重金属Pb的浸出，飞灰将具有应用于处理染料废水的巨大潜力。The adsorption of methylene blue by municipal solid waste incinerator fly ash was studied. The influences of fly ash particle sizes, dosage, temperature, pH value and initial concentration on the adsorption effect of methylene blue were investigated. The leaching toxicity of Pb and Cr in supernatant was detected. The results showed that when the temperature, pH value and dosage of fly ash were in the range of 25- 45℃ , 2 12, 1 -5 g , after 180 mins adsorption, the decolorization rates of methylene blue were more than 75% , and the highest decolorization rate was 99.46%. Furthermore, the concentrations of heavy metals except Pb in liquid su- pernatant were far below the Identification Standards for Hazardous Wastes Identification for Extraction Toxicity. Therefore, it can be made a conclusion that the fly ash would have a huge potential to treat dye wastewater after the leaching concentration of Pb was well controlled.

关 键 词：垃圾焚烧飞灰 亚甲基蓝 吸附 重金属 

分 类 号：X705[环境科学与工程—环境工程]