Citation: Xiaoyong Shu, Shizong Wang, Jianlong Wang, Qi Zhou, Yong Liu, Yongxia Sun. Treatment of high salinity wastewater by Chryseobacterium sp. coupled to ionizing irradiation technology[J]. Chinese Chemical Letters, ;2026, 37(8): 112321. doi: 10.1016/j.cclet.2025.112321 shu

Treatment of high salinity wastewater by Chryseobacterium sp. coupled to ionizing irradiation technology

Xiaoyong Shu ^a ,
Shizong Wang ^{b, c, *,} ,
Jianlong Wang ^{b, c} ,
Qi Zhou ^b ,
Yong Liu ^a ,
Yongxia Sun ^d

a.
College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China
b.
Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, China
c.
Beijing Key Laboratory of Radioactive Wastes Treatment, Tsinghua University, Beijing 100084, China
d.
Institute of Nuclear Chemistry and Technology, 03-195 Warszawa, Poland

wsz2016@tsinghua.edu.cn

Received Date: 13 August 2025
Revised Date: 27 October 2025
Accepted Date: 24 December 2025
Available Online: 25 December 2025

Figures(7)

High-salinity wastewater, especially reverse osmosis (RO) concentrate, is difficult to treat due to severe microbial inhibition and the presence of refractory organics. Herein, a salinity-tolerant bacterium (Chryseobacterium sp.) was isolated and applied in combination with ionizing irradiation to develop an efficient coupled process for RO concentrate treatment. The strain metabolically degraded phenol, p-cresol, indole, and benzoic acid, and transcriptomic analysis revealed that salt tolerance was associated with the synthesis of specific salt-tolerant proteins and enzymes (i.e., branched-chain amino acid). Although elevated chloride and sulfate concentrations reduced the phenol removal rate, complete degradation was achieved. The coupled process achieved up to 78.3% COD removal and completely inactivated Chryseobacterium sp. in the effluent, ensuring biosafety. This study provides a promising strategy integrating halotolerant biodegradation and advanced oxidation for efficient treatment of high-salinity wastewater.
- RO concentrate,
- Halotolerant bacteria,
- Degradation mechanism,
- Salt-tolerant mechanism,
- Ionizing treatment
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沈阳化工大学材料科学与工程学院沈阳 110142