Bacteria-supported Iron Scraps for the Removal of Nitrate from Low Carbon-to-nitrogen Ratio Wastewater

Overview

Journal RSC Adv

Publisher Royal Society of Chemistry

Specialty Chemistry

Date 2022 May 6

PMID 35518970

Authors

Xiawei Liu

Jian Xu

Jiaolong Huang

Manqi Huang

Tao Wang

Shaopan Bao

Wei Tang

Tao Fang

Affiliations

Soon will be listed here.

Abstract

A novel bacteria-supported iron scraps (BSIS) system was developed for nitrate removal from low carbon-to-nitrogen ratio (C/N) wastewater. The system consisted of low-cost iron scraps and the accumulated denitrifying-related bacteria enriched from an Fe-wastewater environment when the system was operating. After operating for 39 d, the nitrate removal rate of the system increased to 73.55% within 24 h. The extraction of bacteria from the system revealed that iron scraps and bacteria had a synergistic effect on nitrate removal and bacteria only took effect when cooperating with iron. Microbial analysis using high-throughput sequencing showed that , which is closely related to hydrogenotrophic denitrification, became the dominant genus in the system. The system provides a promising approach to the treatment of nitrate in low C/N wastewater and it has the potential for large-scale application due to the low cost, simple operation and relatively high removal rate.

Citing Articles

The contributions and mechanisms of iron-microbes-biochar in constructed wetlands for nitrate removal from low carbon/nitrogen ratio wastewater.

Xu J, Liu X, Huang J, Huang M, Wang T, Bao S RSC Adv. 2022; 10(39):23212-23220.

PMID: 35520335 PMC: 9054680. DOI: 10.1039/d0ra03609a.

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