Effect of bamboo biochar on pentachlorophenol leachability and bioavailability in agricultural soil.
Effect of bamboo biochar on pentachlorophenol leachability and bioavailability in agricultural soil.
复制标题
竹生物炭对农业土壤中五氯酚浸出率和生物有效性的影响。
DOI：
10.1016/j.scitotenv.2011.11.005
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
中科院分区：
文献类型：
--
作者：
在这项研究中，竹生物炭（BBC）被提出作为一个实用的碳质材料的有机污染物的原位修复。采用柱淋溶试验研究了五氯酚（PCP）在BBC（0、1、2和5%; w/w）改良土壤中的可吸收性。淋溶后，通过化学萃取法（甲醇和蒸馏水）测定土壤柱中五氯苯酚的残留生物利用度。结果表明，与对照相比，添加5%BBC可使PCP的累积挥发损失量降低42%，甲醇和蒸馏水提取物中PCP的含量分别降低56%和65%。此外，10 h的线性浸出曲线表明，快速释放过程可能依赖于连续扩散和分配机制。回归分析表明，BBC百分比与淋溶的五氯苯酚累积含量之间存在显著（p<0.001）相关性，此外，BBC百分比与五氯苯酚的化学提取之间存在显著相关性，相关系数（R2）大于0.9。因此，向土壤中添加BBC可以防止五氯苯酚的进一步污染，如生物利用度、通过沥滤污染地表水或地下水。
In this study, bamboo biochar (BBC) was proposed as a practical carbonaceous material for the in situ remediation of organic pollutants. Column leaching experiments were used to evaluate the leachability of pentachlorophenol (PCP) in soil amended with BBC (0, 1, 2, and 5%; w/w). After leaching, the residual bioavailability of PCP in the soil column was determined by chemical extraction methods (methanol and distilled water). The results showed that compared to the control, the addition of 5% BBC decreased the cumulative leach-loss content of PCP by 42%, and also reduced PCP concentrations by 56 and 65% in methanol and distilled water extracts, respectively. Moreover, the linear leaching curves for the 10-h leaching time indicated that the rapid release process may be dependent on the continuous diffusion and partition mechanism. Regression analyses showed a significant (p<0.001) relationship between the BBC percentage and cumulative content of leached PCP, in addition, a significant relationship between BBC percentage and the chemical extraction of PCP with correlation coefficients (R2) greater than 0.9. Therefore, adding BBC to soil could prevent PCP further contamination such as bioavailability, surface or groundwater contamination through leaching.
登录
查看更多内容
影响因子：
4.1
作者：
Yu Yang;W. Hunter;S. Tao;D. Crowley;J. Gan
通讯作者：
Yu Yang;W. Hunter;S. Tao;D. Crowley;J. Gan
影响因子：
11.4
作者：
Zimmerman, JR;Ghosh, U;Luthy, RG
通讯作者：
Luthy, RG
影响因子：
13.6
作者：
B. Subramanian;V. Namboodiri;A. Khodadoust;D. Dionysiou
通讯作者：
B. Subramanian;V. Namboodiri;A. Khodadoust;D. Dionysiou
影响因子：
11.8
作者：
Chen, YX;Chen, HL;Shen, MW
通讯作者：
Shen, MW
DOI：
10.1016/j.engappai.2006.06.016
发表时间：
2007-03
期刊：
Eng. Appl. Artif. Intell.
影响因子：
--
作者：
X. Su;G. Zeng;G. Huang;Jian-bing Li;Jie Liang;Ling Wang;C. Du
通讯作者：
X. Su;G. Zeng;G. Huang;Jian-bing Li;Jie Liang;Ling Wang;C. Du