不同胞外聚合物组分污泥的碳化实验研究  

Experiment of Activated Carbon from Sludge with Different Constituent of Extracellular Polymeric Substances

作　　者：庞欣[1] 陈建林[1] 沈晓鹏[1] 毛星[1] 王孟晴[1] 

机构地区：[1]南京大学环境学院污染控制与资源化研究国家重点实验室,南京210046

出　　处：《河南科学》2013年第8期1267-1270,共4页Henan Science

摘　　要：采用一套自制碳化装置，研究了通过添加类胞外聚合物（EPS）组分所带来的碳化污泥吸附性能的变化．选取淀粉和黄腐酸分别模拟EPS中的糖类和腐殖质两类物质，对添加比例、碳化温度、碳化时间三个因素进行了详细的研究．实验结果表明：在碳化温度450～600℃下，模拟腐殖质类添加腐殖酸的方法能更好地提高碳化污泥产物的吸附性能．添加淀粉的比例越大越不利于碳化产物的吸附性能，添加黄腐酸污泥的碳化产物对Cu^2的吸附量随添加比例的增大而增加，最佳碳化时间为60min，时间过长则吸附量随之下降．Effect of different Extracellular Polymeric Substances （EPS） levels on adsorption properties of carbonized sludge was studied with a set of carbonization device. Starch and fulvic acid are selected to simulate sugar and humic in EPS,to discuss about the adjunction proportion, carbonized temperature and carbonized time. Result shows that under the carbonization temperature of 450-600 ℃, addition of fulvic acid can improve the adsorption capacity. The bigger adjunction proportion of starch, the more disadvantageous adsorption properties of carbonization sluge will be occurred. Moreover, the Cu^2＋ adsorption capacity increased with the increase of adjunction proportion of fulvic acid, and the optimum carbonized time is 60 min.

关 键 词：EPS 碳化污泥 淀粉 黄腐酸 吸附性能 

分 类 号：X705[环境科学与工程—环境工程]