改性粉煤灰/膨润土混合吸附剂去除水体土霉异味MIB和geosmin研究  

Removal of Earthy-musty Odors from Aqueous Solutions by a Hybrid Adsorbent of Modified Fly Ash/Bentonite

作　　者：杨萌 胡佳明 王超 刘立明 黄应平[2] Yang Meng, Hu Jiaming, Wang Chao, Liu Liming, Huang Yingping(1. College of Biological ＆. Pharmaceutical Sciences, China Three Gorges Univ. , Yichang 443002, China; 2. Engineering Research Center of Eco environment in Three Gorges Reservoir Region of Ministry of Education, China Three Gorges Univ. , Yichang 443002, Chin)

机构地区：[1]三峡大学生物与制药学院,湖北宜昌443002 [2]三峡大学三峡库区生态环境教育部工程研究中心,湖北宜昌443002

出　　处：《三峡大学学报（自然科学版）》2018年第3期96-101,共6页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金(31472293);水体污染控制与治理科技重大专项(2012ZX07104-002-04)

摘　　要：通过硫酸活化膨润土和粉煤灰,并按一定比例制备了一种对具有土霉味的2-甲基异莰醇(2-methylisoborneol,MIB)和二甲基萘烷醇(geosmin)有吸附清除效果的吸附剂,该吸附剂剂量为15mg/L,pH 8.0时,对MIB和geosmin的吸附率分别为59.9%和63.7%.MIB和geosmin无论是在单组份溶液体系还是双组份溶液体系都符合Freundlich等温吸附模型,表明该吸附过程不是单分子层吸附,而是一个非均相吸附体系.将其与高锰酸钾复合药剂(PPC)、粉末活性炭(PAC)分别去除水体土霉异味的效果进行了比较,结果显示,粉末活性炭的去除效率最高,合成吸附剂次之,高锰酸钾复合药剂去除效率最差.该吸附剂在去除水体土霉异味比单纯使用活性炭相比,其吸附综合效益具有一定优势,可以替代或者部分替代活性炭或者商品吸附剂.A low cost adsorbent is prepared which is mainly made of fly ash and bentonite according to a certain proportion. The hybrid adsorbent displayed excellent removal effect in the treatment of MIB and geosmin.when the adsorbent concentration is 15 mg/L, pH 8.0, the removal efficiencies of MIB and geosmin are 59.9% and 63.7% respectively. Whether in one component solution system or two component solution system,the adsorption of MIB and geosmin fit well with the Freundlich isotherm model, so as to show that the adsorption process is not a monolayer adsorption, but a heterogeneous adsorption system. Effects on the removal of earthy musty odors in water by the adsorbent, permanganate potassium composite （PPC） and power active carbon （PAC） are compared. The removal efficiency order of three materials is PAC, the adsorbent andPPC. The results show that the adsorbent has more economic advantages than PAC and CCR; and it couldsubstitute or partial substitute PAC in water treatment.

关 键 词：土霉味 膨润土 粉蝶灰 低成本 吸附 

分 类 号：X131.2[环境科学与工程—环境科学]