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Highly synergistic effects on ammonium removal by the co-system of Pseudomonas stutzeri XL-2 and modified walnut shell biochar
- Source :
- Bioresource Technology. 280:239-246
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Pseudomonas stutzeri strain XL-2 presented efficient ammonium removal due to heterotrophic nitrification-aerobic denitrification. The modified walnut shell biochar also showed ammonium adsorption due to chemical interaction. The complex of modified biochar and strain XL-2 exhibited excellent synergistic effects on ammonium removal, especially in unfavorable environment. The maximum average ammonium removal rate of the complex was 4.40 mg·L−1·h−1, which was 3.01 times higher than that of pure bacteria and 5.57 times higher than that of biochar. A large number of irregular pores and hydrophilic functional groups promoted the immobilization of strain XL-2 on biochar. Adsorption of ammonium, high specific surface area and release of Mg2+ by biochar enhanced biodegradation of strain XL-2. Approximately 96.34%−98.73% of ammonium was removed in a sequencing batch reactor (SBR) inoculating with the complex of strain XL-2 and biochar, which was much higher than the treatment efficiency of free bacteria in SBR.
- Subjects :
- 0106 biological sciences
Environmental Engineering
Denitrification
Nitrogen
Juglans
Bioengineering
Sequencing batch reactor
010501 environmental sciences
01 natural sciences
chemistry.chemical_compound
Adsorption
010608 biotechnology
Specific surface area
Ammonium Compounds
Biochar
Ammonium
Waste Management and Disposal
0105 earth and related environmental sciences
Pseudomonas stutzeri
biology
Renewable Energy, Sustainability and the Environment
Chemistry
Heterotrophic Processes
General Medicine
Biodegradation
biology.organism_classification
Nitrification
Aerobiosis
Charcoal
Nuclear chemistry
Subjects
Details
- ISSN :
- 09608524
- Volume :
- 280
- Database :
- OpenAIRE
- Journal :
- Bioresource Technology
- Accession number :
- edsair.doi.dedup.....453720a6694538e4c45219a16796ca38