Related Experiment Video
Updated: Sep 23, 2026

Immobilization of Multi-biocatalysts in Alginate Beads for Cofactor Regeneration and Improved Reusability
Published on: April 22, 2016
Synergistic effects of controlled-release oxygen and immobilized composite microorganisms on black-odor water
Bolin Li1, Aoying Zhu2, Siyun Liu3
1Key Laboratory of Protection and Restoration of Yangtze River-connected Lake (Poyang Lake), Ministry of Ecology and Environment, Jiangxi Academy of Eco-environmental Sciences and Planning, Nanchang, Jiangxi 330006, China; Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China; Shenzhen Research Institute, Wuhan University of Technology, Shenzhen, Guangdong 518000, China.
Abstract:
Black-odor water remediation is often limited by insufficient oxygen supply, sediment-derived pollutant release, and unstable microbial activity. To overcome these limitations, this study developed a synergistic remediation system combining stearic acid(SA)-coated calcium peroxide(CaO2) oxygen releasers with composite microorganisms immobilized on FeCl3-modified zeolite. The SA coating regulated CaO2 dissolution and provided a gradual oxygen supply, while the modified zeolite enhanced microbial retention and pollutant enrichment. The optimized system achieved effective remediation of simulated black-odor water, with removal efficiencies of 97.94% for NH4+-N and 94.62% for total nitrogen(TN) in overlying water, and 67.41% for acid volatile sulfide(AVS) and 57.68% for TN in sediment. Compared with individual treatments, the coupled system showed improved nitrogen and sulfur removal performance and maintained stable treatment efficiency under low-temperature conditions. Microbial community analysis suggested that the enhanced remediation performance was associated with the formation of favorable redox microenvironments and the potential involvement of nitrogen and sulfur transformation pathways, including nitrification, denitrification, sulfur-driven denitrification, and anaerobic ammonium oxidation. This study provides a feasible strategy for improving the stability of in situ black-odor water remediation by integrating controlled oxygen release with microbial immobilization.
More Related Videos
08:43Aerobic Biodegradation Testing of Materials Using a Natural Marine Seawater Inoculum and Closed Loop Respirometer
Published on: October 24, 2025
13:16A Whole Cell Bioreporter Approach to Assess Transport and Bioavailability of Organic Contaminants in Water Unsaturated Systems
Published on: December 24, 2014
Related Concept Videos
Microbial Bioremediation of Hydrocarbons
Microbial Wastewater Treatment
Bioremediation
Bioreactor Controls-II
Microbial Bioremediation of Pesticides
Environmental Applications of Microorganisms