一种新型荞麦杆吸附剂制备及对苯酚吸附机理的研究  

Preparation of a new type of adsorption agent buckwheat straw and study on the adsorption mechanism for phenol

作　　者：严云[1] 刘洪[2] 傅天华 袁海[1] 曹一丹 蔡礼俊 

机构地区：[1]西昌学院农业科学学院,西昌615013 [2]西昌学院轻化工学院,西昌615013 [3]阿坝师范学院化学化工与生命科学系,汶川623002

出　　处：《化工新型材料》2017年第3期235-237,共3页New Chemical Materials

基　　金：西昌市教育和科学技术局项目(16JSYJ04);四川省教育厅科研项目(13ZB0172);阿坝师范学院校级重点课题(ASA14-14)

摘　　要：在480℃下将磷酸活化后的荞麦杆进行炭化,通过静态吸附实验研究了其对苯酚的吸附性能。用差热-热重分析仪测定了荞麦杆完全分解的温度为480℃,用傅里叶红外光谱分析荞麦杆生物炭表面有羟基、氨基、羧基等活性基团。在30℃,pH=6时,炭化荞麦杆对苯酚最大吸附量达到9.20mg/g。The buckwheat straw was activated and prepared by carbonization at the tempeture 490℃,the adsorption property for phenol was studied by static adsorption experiment.The complete decomposition tempeture of buckwheat straw was 490℃ by DTG-60 SHMADZU differential thermal gravimetric analyzer.Analysis of the active groups such as hydroxyl,amino and carboxyl groups on the surface of the biological carbon of the buckwheat straw was carried with FTIR.The maximum adsorption capacity of carbonized buckwheat straw to phenol was achieved 9.20mg/g.

关 键 词：炭化荞麦杆 苯酚 吸附等温方程 动力学 

分 类 号：X703[环境科学与工程—环境工程] O647.33[理学—物理化学]