Performance of aerobic denitrifying fungal community for promoting nitrogen reduction and its application in drinking water reservoirs

Tao Liu; Ziying Zhao; Haiyun Li; Mukesh Kumar Awasthi; Dmitry B Kosolapov; Tongchao Ni; Ben Ma; Xiaoyan Liu; Xiang Liu; Wei Zhi; Haihan Zhang

doi:10.1016/j.jenvman.2023.119842

Performance of aerobic denitrifying fungal community for promoting nitrogen reduction and its application in drinking water reservoirs

J Environ Manage. 2024 Feb:351:119842. doi: 10.1016/j.jenvman.2023.119842. Epub 2023 Dec 17.

Authors

Tao Liu¹, Ziying Zhao¹, Haiyun Li¹, Mukesh Kumar Awasthi², Dmitry B Kosolapov³, Tongchao Ni¹, Ben Ma¹, Xiaoyan Liu¹, Xiang Liu¹, Wei Zhi⁴, Haihan Zhang⁵

Affiliations

¹ Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
² College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, China.
³ Papanin Institute for Biology of Inland Waters of Russian Academy of Sciences (IBIW RAS), 109, Borok, Nekouz, Yaroslavl, 152742, Russia.
⁴ Department of Civil and Environmental Engineering, The Pennsylvania State University, USA.
⁵ Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China. Electronic address: zhanghaihan@xauat.edu.cn.

PMID: 38109827
DOI: 10.1016/j.jenvman.2023.119842

Abstract

The effect of mix-cultured aerobic denitrifying microorganisms on the water remediation has been extensively explored, but little is known about the performance of mix-cultured low efficiency fungi on denitrification. In this study, two kinds of aerobic denitrifying fungi (Trichoderma afroharzianum H1 and Aspergillus niger C1) were isolated from reservoirs, improved the capacity by mix-cultured. The results showed a difference between northern and southern reservoirs, the dominants of genera were Cystobasidium and Acremonium. The removals of total nitrogen (TN) was 12.00%, 7.53% and 69.33% in Trichoderma afroharzianum H1, Aspergillus niger C1 and mix-cultured (C1 and H1) under the denitrification medium. The contents of ATP and electron transport system activity in mix-cultured amendment were increased by 42.54% and 67.52%, 1.72 and 2.91 times, respectively. Besides, the raw water experiment indicated that TN removals were 24.05%, 12.66% and 73.42% in Trichoderma afroharzianum H1, Aspergillus niger C1 and mix-cultured. The removals of dissolved organic carbon in mix-cultured were increased 35.02% and 50.46% compared to Trichoderma afroharzianum H1 and Aspergillus niger C1. Therefore, mix-cultured of two low efficiency aerobic denitrifying fungi has been considered as a novelty perspective for mitigation of drinking water source.

Keywords: Aerobic denitrification; Dissolved organic carbon; Drinking water source; Fungal diversity; Mix-cultured aerobic denitrifying fungi.

MeSH terms

Aerobiosis
Aspergillus*
Denitrification
Drinking Water*
Hypocreales*
Mycobiome*
Nitrogen

Substances

Drinking Water
Nitrogen

Supplementary concepts

Trichoderma afroharzianum
Aspergillus brasiliensis