Effect of pH on elemental sulfur conversion and microbial communities by autotrophic simultaneous desulfurization and denitrification
Effect of pH on elemental sulfur conversion and microbial communities by autotrophic simultaneous desulfurization and denitrification
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pH对自养同步脱硫反硝化过程中元素硫转化和微生物群落的影响
DOI：
10.1080/09593330.2016.1173117
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发表时间：
2016-04
影响因子：
2.8
通讯作者：
Li Zhixu
中科院分区：
文献类型：
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作者：
Xu Jinlan;Fan Yimin;Li Zhixu
pH值对自养同步脱硫反硝化过程中积累的元素硫有重要影响。进水硝酸盐与硫化物（N/S）摩尔比设置为0.5、0.67、1.0、1.33和2.0，硫化物浓度为200mg/L。研究了 pH 对元素硫转化和微生物群落的影响。反应24小时后，在近中性和弱碱条件下，硫化物去除率达到98%。近中性条件下单质硫的转化率为29.41%。弱碱条件导致硫酸盐形成较多，微生物利用的硝酸盐主要转化为N2，去除率达96%。在近中性条件下，将保留时间从24小时增加到48 小时，硝酸盐的去除率从63.58%增加到90%。是功能性细菌种类，条带 1 和 2 代表不同种类的 Sulfurovumsp。根据PCR-DGGE分析系统中的微生物群落结构。以带1为代表的功能性细菌主要产生硫酸盐，而以带2为代表的功能性细菌主要产生元素硫。
pH has an important influence on the elemental sulfur accumulated in an autotrophic simultaneous desulfurization and denitrification process. The influent nitrate to sulfide (N/S) mole ratio was set to 0.5, 0.67, 1.0, 1.33 and 2.0 with a 200 mg/L sulfide concentration. The effect of pH on elemental sulfur conversion and microbial communities was studied. Sulfide removal was achieved to the extent of 98% under near-neutral and weak base conditions after 24 h of reaction. The conversion rate of elemental sulfur was 29.41% under the near-neutral condition. The weak base condition led to greater formation of sulfate, and the nitrate used by the microorganisms was transformed mainly to N2with a removal rate of 96%. Increasing the retention time from 24 to 48 h caused the removal rate of nitrate increased from 63.58% to 90% under the near-neutral condition.Sulfurovumsp. was the functioning bacterial species, and bands 1 and 2 represent different species ofSulfurovumsp. in the system according to the PCR-DGGE analysis of the microbial community structure. The functional bacteria represented by band 1 produced mainly sulfate, but the functional bacteria represented by band 2 produced mainly elemental sulfur.
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DOI：
--
发表时间：
2005
期刊：
--
影响因子：
--
作者：
Zhang Zhong-zhi
通讯作者：
Zhang Zhong-zhi
DOI：
10.2166/wst.2005.0076
发表时间：
2005-08
期刊：
Water science and technology : a journal of the International Association on Water Pollution Research
影响因子：
--
作者：
W. Yang;J. Vollertsen;T. Hvitved‐Jacobsen
通讯作者：
W. Yang;J. Vollertsen;T. Hvitved‐Jacobsen
影响因子：
4.4
作者：
B. S. Moraes;T. S. Souza;E. Foresti
通讯作者：
B. S. Moraes;T. S. Souza;E. Foresti
影响因子：
12.8
作者：
Rui Li;Chuanping Feng;Weiwu Hu;B. Xi;N. Chen;Baowei Zhao;Ying Liu;Chun-bo Hao;Jiaoyang Pu
通讯作者：
Rui Li;Chuanping Feng;Weiwu Hu;B. Xi;N. Chen;Baowei Zhao;Ying Liu;Chun-bo Hao;Jiaoyang Pu
影响因子：
3.1
作者：
A. Nielsen;J. Vollertsen;T. Hvitved‐Jacobsen
通讯作者：
A. Nielsen;J. Vollertsen;T. Hvitved‐Jacobsen