Remediation of the black-odor water body by aquatic plants with plant growth-promoting Rhizobacteria: Lab and pilot tests

Bing Xu; Xiaoyuan Zhang; Jo-Shu Chang; Hongliang Guo; Song Han; Duu-Jong Lee

doi:10.1016/j.envres.2023.115462

Remediation of the black-odor water body by aquatic plants with plant growth-promoting Rhizobacteria: Lab and pilot tests

Environ Res. 2023 Apr 15:223:115462. doi: 10.1016/j.envres.2023.115462. Epub 2023 Feb 10.

Authors

Bing Xu¹, Xiaoyuan Zhang¹, Jo-Shu Chang², Hongliang Guo³, Song Han⁴, Duu-Jong Lee⁵

Affiliations

¹ College of Forestry, Northeast Forestry University, Harbin, 150040, China.
² Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan; Department of Chemical and Materials Engineering, Tunghai University, Taichung 407, Taiwan.
³ College of Forestry, Northeast Forestry University, Harbin, 150040, China. Electronic address: guohongliang97@126.com.
⁴ College of Forestry, Northeast Forestry University, Harbin, 150040, China. Electronic address: songh77@126.com.
⁵ Department of Mechanical Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong; Department of Chemical Engineering and Materials Science, Yuan Ze University, Chung-li, Taiwan 32003. Electronic address: tuclee@cityu.edu.hk.

PMID: 36773643
DOI: 10.1016/j.envres.2023.115462

Abstract

To explore an effective, environmental, rapid operating method to repair black and odor water bodies, water samples and sediment samples collected from a polluted municipal lake in Daqing, China, were directly tested in transparent barrels (10 L). Seven groups of optimizing parameters obtained the optimal operating method, and the max removal rate of COD, NH₄⁺-N, NO₃^--N, and TP were achieved (89.18%, 59.65%, 69.50%, and 75.61%) by using aquatic plants with plant growth-promoting Rhizobacteria (PGPR). To further verify the method's effectiveness, lager scale tests were conducted based on a water tank (216 L), and similar removal rates were obtained within 48 h. The water quality index and microbial community structure analysis revealed the mechanisms of the interaction among plants, microorganisms, and pollutants and the main biological processes during water body remediation. Finally, the cost of water body remediation by using this method was estimated.

Keywords: Aquatic plant; Mechanisms; PGPR; Remediation.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Biodegradation, Environmental
Lakes*
Nitrogen / analysis
Odorants*
Plants
Water Quality

Substances

Nitrogen