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Linlin Ma
China University of Geosciences
ChemistryBioremediationHexavalent chromiumPhosphorusChromium
4Publications
1H-index
9Citations
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Publications 6
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#1Yutian Hu (China University of Geosciences)H-Index: 1
#2Nan Chen (China University of Geosciences)H-Index: 19
Last. Miao Li (THU: Tsinghua University)H-Index: 21
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Abstract To date, comparatively little research is known about the role of pH conditions in bioremediation of Cr(VI) contaminated aquifers. This study explored microbial Cr(VI) reduction and denitrification under different initial pHs. The underlying mechanism was also investigated. When testing 50 mg/L–N nitrate and 10 mg/L Cr(VI), complete contaminants removal was observed at initial pH 10.0 and 11.0, and only 10 %–30 % of removal achieved under other conditions, which might be ascribe to the s...
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#1Tong Liu (China University of Geosciences)H-Index: 1
Last. Chuanping Feng (China University of Geosciences)H-Index: 33
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In modern Earth, anaerobic pyrite oxidation under circumneutral conditions also has great impact on the fate of nitrate in aquifers and sediments, as well as the transportation of toxic metals. However, the mechanism of how microbes mediated this process is still being debated. Electrochemical analysis on pyrite cubic electrode showed that, its oxidation threshold under anaerobic circumneutral conditions (ca. 200 mV) was much lower than that at aerobic acidic conditions (ca. 650 mV), implying po...
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#1Linlin Ma (China University of Geosciences)H-Index: 1
#2Nan Chen (China University of Geosciences)H-Index: 19
Last. Yutian Hu (China University of Geosciences)H-Index: 1
view all 6 authors...
Abstract Groundwater contaminated by hexavalent chromium (Cr(VI)) has posed severe threat to the environment and public health. Although heterotrophic bioremediation has been known as an efficient approach, little is explored on mineral nutrient source addition such as phosphorus minerals. In this study, the stabilization and sustainability of phosphorus minerals for providing phosphorus has been investigated, and the enhancement of Cr(VI) removal by mixed bacterial consortium coupled with phosp...
2 CitationsSource
#1Linlin Ma (China University of Geosciences)H-Index: 1
#2Nan Chen (China University of Geosciences)H-Index: 19
Last. Tong Liu (China University of Geosciences)H-Index: 1
view all 6 authors...
Abstract Chromium(VI) contaminated groundwater has become an increasingly prominent problem due to its extensive application in industry. Based on the easy-loss defect of microbial in practical application and previous research on the coupling enhancement of Cr(VI) bioreduction by phosphorus minerals, Microbial-Phosphorus minerals-Alginate (MPA) immobilized particles were proposed and investigated in this study. The feasibility of MPA immobilized particles were proved, with the higher reduction ...
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#1Linlin Ma (China University of Geosciences)H-Index: 1
#2Jinming Xu (China University of Geosciences)H-Index: 1
Last. Chuanping Feng (China University of Geosciences)H-Index: 33
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Abstract Groundwater contaminated by Cr(VI) requires effective remediation to prevent adverse environmental impacts. The biodegradation of Cr(VI) has been documented for several decades, but little remains known about the removal fate of chromium, including the main species of reductase (sites) and functional genes involved in Cr(VI) reduction in mixed bacterial consortium. Cr(VI) reduction in this study was verified to be an enzyme-mediated process. Meanwhile, Cr(VI) reduction of different cell...
8 CitationsSource
#1Linlin MaH-Index: 1
#2Nan ChenH-Index: 19
Last. Chuanping FengH-Index: 33
view all 3 authors...
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