Pseudomonas sp. BS-1发酵产物对土壤中钍的淋洗作用

王维大, 张达, 韩剑宏, 姜庆宏, 李玉梅, 孙鹏, 张连科. Pseudomonas sp. BS-1发酵产物对土壤中钍的淋洗作用[J]. 环境工程学报, 2018, 12(4): 1198-1207. doi: 10.12030/j.cjee.201712036
引用本文: 王维大, 张达, 韩剑宏, 姜庆宏, 李玉梅, 孙鹏, 张连科. Pseudomonas sp. BS-1发酵产物对土壤中钍的淋洗作用[J]. 环境工程学报, 2018, 12(4): 1198-1207. doi: 10.12030/j.cjee.201712036
WANG Weida, ZHANG Da, HAN Jianhong, JANG Qinghong, LI Yumei, SUN Peng, ZHANG Lianke. Leaching properties of thorium in soil by fermentation products of Pseudomonas sp. BS-1[J]. Chinese Journal of Environmental Engineering, 2018, 12(4): 1198-1207. doi: 10.12030/j.cjee.201712036
Citation: WANG Weida, ZHANG Da, HAN Jianhong, JANG Qinghong, LI Yumei, SUN Peng, ZHANG Lianke. Leaching properties of thorium in soil by fermentation products of Pseudomonas sp. BS-1[J]. Chinese Journal of Environmental Engineering, 2018, 12(4): 1198-1207. doi: 10.12030/j.cjee.201712036

Pseudomonas sp. BS-1发酵产物对土壤中钍的淋洗作用

  • 基金项目:

    内蒙古自然科学基金资助项目(2016BS0511)

    内蒙古科技大学创新基金(2016QDL-B08)

Leaching properties of thorium in soil by fermentation products of Pseudomonas sp. BS-1

  • Fund Project:
  • 摘要: 从焦化废水污泥中筛选出一株产生物表面活性剂的菌株,将其命名为BS-1,16S rDNA系统发育学分析确定其属于假单胞菌属(Pesudomonas sp.)。该菌株发酵产物初步鉴定为鼠李糖脂,在其临界胶束浓度为0.56 g·L-1时,可将水溶液的表面张力从76.8 mN·m-1降至38.5 mN·m-1。将菌株发酵产物溶液作为淋洗剂,采用浸提和土柱淋洗的方法研究了BS-1发酵产物对污染土壤中钍的去除效果,结果表明:当pH为10,浓度为3 g·L-1,振荡时间为72 h时,钍的去除率可达70.14%;在柱状动态实验中,当淋洗量达到800 mL时,发酵产物溶液对钍的累积去除量最大为65.03 mg·kg-1,发酵产物溶液对钍的累积去除量明显优于去离子水。对比淋洗后土壤中钍的形态占比可知,残渣态增加10.16%,氧化结合态减少了11.41%。对比淋洗前后土壤中钍的形态含量可知,酸可提取态、氧化结合态、有机结合态分别减少了83.25%、75.22%、60.70%。淋洗后钍的稳定性增强。
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  • 刊出日期:  2018-04-22
王维大, 张达, 韩剑宏, 姜庆宏, 李玉梅, 孙鹏, 张连科. Pseudomonas sp. BS-1发酵产物对土壤中钍的淋洗作用[J]. 环境工程学报, 2018, 12(4): 1198-1207. doi: 10.12030/j.cjee.201712036
引用本文: 王维大, 张达, 韩剑宏, 姜庆宏, 李玉梅, 孙鹏, 张连科. Pseudomonas sp. BS-1发酵产物对土壤中钍的淋洗作用[J]. 环境工程学报, 2018, 12(4): 1198-1207. doi: 10.12030/j.cjee.201712036
WANG Weida, ZHANG Da, HAN Jianhong, JANG Qinghong, LI Yumei, SUN Peng, ZHANG Lianke. Leaching properties of thorium in soil by fermentation products of Pseudomonas sp. BS-1[J]. Chinese Journal of Environmental Engineering, 2018, 12(4): 1198-1207. doi: 10.12030/j.cjee.201712036
Citation: WANG Weida, ZHANG Da, HAN Jianhong, JANG Qinghong, LI Yumei, SUN Peng, ZHANG Lianke. Leaching properties of thorium in soil by fermentation products of Pseudomonas sp. BS-1[J]. Chinese Journal of Environmental Engineering, 2018, 12(4): 1198-1207. doi: 10.12030/j.cjee.201712036

Pseudomonas sp. BS-1发酵产物对土壤中钍的淋洗作用

  • 1. 内蒙古科技大学能源与环境学院,包头 014010
  • 2. 华中科技大学环境与市政工程学院,武汉 430074
基金项目:

内蒙古自然科学基金资助项目(2016BS0511)

内蒙古科技大学创新基金(2016QDL-B08)

摘要: 从焦化废水污泥中筛选出一株产生物表面活性剂的菌株,将其命名为BS-1,16S rDNA系统发育学分析确定其属于假单胞菌属(Pesudomonas sp.)。该菌株发酵产物初步鉴定为鼠李糖脂,在其临界胶束浓度为0.56 g·L-1时,可将水溶液的表面张力从76.8 mN·m-1降至38.5 mN·m-1。将菌株发酵产物溶液作为淋洗剂,采用浸提和土柱淋洗的方法研究了BS-1发酵产物对污染土壤中钍的去除效果,结果表明:当pH为10,浓度为3 g·L-1,振荡时间为72 h时,钍的去除率可达70.14%;在柱状动态实验中,当淋洗量达到800 mL时,发酵产物溶液对钍的累积去除量最大为65.03 mg·kg-1,发酵产物溶液对钍的累积去除量明显优于去离子水。对比淋洗后土壤中钍的形态占比可知,残渣态增加10.16%,氧化结合态减少了11.41%。对比淋洗前后土壤中钍的形态含量可知,酸可提取态、氧化结合态、有机结合态分别减少了83.25%、75.22%、60.70%。淋洗后钍的稳定性增强。

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