生物质炭添加量对BDE-47在土壤中吸附和解吸行为的影响  

Effect of bio-char addition on BDE-47 sorption and desorption behaviors on soil

作　　者：刘锐龙[1,2] 刘世科[3] 辛佳[4] 刘翔[2] 冯健[1] 张应辉[1] 

机构地区：[1]北京市燃气集团有限责任公司,北京100035 [2]清华大学环境学院,北京100084 [3]衡水学院应用化学系,河北衡水053000 [4]中国海洋大学环境科学与工程学院,山东青岛266003

出　　处：《环境污染与防治》2015年第5期50-54,共5页Environmental Pollution & Control

基　　金：环保公益性行业科研专项(No.201209053)

摘　　要：研究了添加生物质炭对2，2’，4，4’-四溴联苯醚（BDE-47）在土壤中吸附和解吸行为的影响。结果表明，在受试天然土壤中添加不同量的生物质炭，土壤对BDE-47吸附能力的变化程度也将不同，当生物质炭添加量为2．0％（质量分数，下同）以下时，随着生物质炭添加量的增加，土壤对BDE-47吸附能力的提高程度越明显，BDE-47的解吸滞后性则呈现先上升后下降的趋势。当生物质炭添加量为0．1％、0．5％时，土壤单点分配系数分别为原土壤的0．98～1．39、1．02～1．50倍；当生物质炭添加量为1．0％、2．0％时，土壤单点分配系数分别为原土壤的1．44～1．68、3．25～3．27倍；生物质炭添加量为1．0％时，BDE-47的解吸滞后性最显著。The effect of bio-char addition on 2,2＇, 4,4＇-tetraBDE （BDE-47） sorption and desorption behaviors on soil was investigated in this paper. The results showed that when adding different amount of bio-ehar into the soil, the changes of soil adsorption capability for BDE-47 were different. When the bio-char addition amount was less than 2.0% （mass ratio, the same blow）,then the greater the bio-char addition was, the stronger the soil adsorption capa- bility for BDE-47, whereas the desorption hysteresis presented the first rising then downward tendency. When bio-char adding amount was 0.1 ~//00 and 0.5~//00 of the soil weight, the single point distribution coefficient were 0.98-1.39,1.02- 1.50 times of the bulk soil,respectively. When bio-char adding amount was 1.0G and 2.0G of the soil weight,the sin- gle point distribution coefficient was 1.44-1.68,3.25-3.27 times of the bulk soil, respectively. When bio-char adding amount was 1.0~ ,BI）E-47 desorption hysteresis became the most obvious.

关 键 词：生物质炭 BDE-47土壤 吸附解吸影响 

分 类 号：X53[环境科学与工程—环境工程]