H_3PO_4法制备核桃壳活性炭及其处理啤酒废水的研究  

Preparation of Activated Carbons with Phosphoric Acid Method from Walnut Hull and its Application in Brewery Wastewater Treatment

作　　者：董瑞[1] 肖凯军[1] 任源[2] 

机构地区：[1]华南理工大学轻工与食品学院,广东广州510640 [2]华南理工大学环境科学与工程学院,广东广州510006

出　　处：《现代食品科技》2011年第8期960-964,1024,共6页Modern Food Science and Technology

基　　金：粤港关键领域重点突破项目(2007Z1-E6011);广东省教育部产学研结合项目(2009B090200020)

摘　　要：本文研究了H3PO4法制备核桃壳活性炭的工艺条件,并探讨了其处理啤酒废水的影响因素。结果表明：浸渍比1：2.5,浸渍温度60℃,H3PO4浓度60%,300℃炭化80 min,600℃活化80 min时,制备的活性炭对碘和亚甲基蓝的吸附值分别达到876.8 mg/L和170.3 mg/L;在pH7.0的条件下,采用吸附粒径为170~200目的活性炭,以1：20的料液比,在40℃下处理啤酒废水80 min,废水的CODCr去除率达到83.9%,BOD去除率达到66.5%。The preparation processing of activated carbons from walnut hull with phosphoric acid method was studied and the performance of prepared activated carbons to treat brewery wastewater was investigated.These results showed that the adsorptive values of prepared carbon to iodine and to methylene blue were 876.8 mg/L and 170.3 mg/L,respectively,under the following optimum conditions for activated carbon preparation： soaking regent of 60 % phosphoric acid solution,the ratio of phosphoric acid solution to activated carbon 1：20,soaking temperature 60 ℃,carbonizing time 80 min at 300 ℃and activating time 80 min at 600 ℃.The CODCr and BOD removing rates of brewery wastewater at pH 7.0 were 83.9% and 66.5%,respectively,when the prepared active carbon with 170~200 meshes was used to adsorb at 60 ℃ for 80 min as the rate of active carbon to wastewater was 1：20.

关 键 词：活性炭 核桃壳 H3PO4法 制备 啤酒废水 

分 类 号：TQ424.1[化学工程] X797[环境科学与工程—环境工程]