AI Article Synopsis
- * Researchers isolated a microorganism, Citrobacter sp. X-9, which demonstrated the highest efficiency in removing NH-N among six tested strains for treating REE wastewater.
- * The study found that using Citrobacter sp. X-9 in an in-situ cyclic treatment method led to better NH-N removal efficiency compared to other treatment modes, showing promise for purifying wastewater from both inside and outside the ore body.
Article Abstract
Ammonium sulfate ((NH)SO) leaching method to extract rare earth elements (REEs) of mine has produced a large amount of NH-N-enriched wastewater derived from ore body, leading to many serious environmental pollution problems. This study was the first time to establish an in-situ treatment for real REEs wastewater outside and inside the ore body by an isolated indigenous microorganism. The results stated that Citrobacter sp. X-9 achieved the highest NH-N removal efficiency among the isolated six microbial strains. Moreover, the microbe to treat the REEs wastewater outside ore body gave the greatest NH-N removal efficiency under the optimized conditions in the Erlenmeyer flask (250-mL) and bioreactor (10-L). Furthermore, compared to the others' modes, the in-situ treatment by cyclic mode with Citrobacter sp. X-9 possessed superior performance in NH-N removal efficiency for wastewater inside of ore body, showing that the established in-situ treatment was the potential approach for REEs wastewater purification.
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| http://dx.doi.org/10.1016/j.biortech.2024.131942 | DOI Listing |
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Article Synopsis
- * Researchers isolated a microorganism, Citrobacter sp. X-9, which demonstrated the highest efficiency in removing NH-N among six tested strains for treating REE wastewater.
- * The study found that using Citrobacter sp. X-9 in an in-situ cyclic treatment method led to better NH-N removal efficiency compared to other treatment modes, showing promise for purifying wastewater from both inside and outside the ore body.
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