提取腐殖酸后的褐煤残渣对水中Cr（Ⅵ）的吸附研究

王茁伊,付鹏,王润琪,刘鹏,于妍

Study on the adsorption of Cr （Ⅵ） in water by lignite residue after humic acid extraction

Zhuoyi WANG,Peng FU,Runqi WANG,Peng LIU,Yan YU

表4 试验设计方案和结果

Table 4 Experimental design scheme and results

序号 吸附时间/min pH 褐煤残渣投加量/g Cr（Ⅵ）去除率/% 1 240 2.5 0.12 94.912 2 270 2.5 0.1 99.499 3 210 2.5 0.1 97.259 4 270 3.5 0.1 95.712 5 240 3 0.1 99.552 6 240 3.5 0.08 90.165 7 210 3 0.08 92.939 8 240 3 0.1 98.912 9 210 3.5 0.1 91.712 10 270 3 0.08 92.939 11 240 3.5 0.12 94.432 12 240 2.5 0.08 96.032 13 210 3 0.12 91.338 14 270 3 0.12 94.325 15 240 3 0.1 98.112