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Role of nitrification in the biodegradation of selected artificial sweetening agents in biological wastewater treatment process
- Source :
- Bioresource technology. 161
- Publication Year :
- 2014
-
Abstract
- The biodegradation of the six artificial sweetening agents including acesulfame (ACE), aspartame (ASP), cyclamate (CYC), neohesperidindihydrochalcone (NHDC), saccharin (SAC), and sucralose (SUC) by nitrifying activated sludge was first examined. Experimental results showed that ASP and NHDC were the most easily degradable compounds even in the control tests. CYC and SAC were efficiently biodegraded by the nitrifying activated sludge, whereas ACE and SUC were poorly removed. However, the biodegradation efficiencies of the ASs were increased with the increase in initial ammonium concentrations in the bioreactors. The association between nitrification and co-metabolic degradation was investigated and a linear relationship between nitrification rate and co-metabolic biodegradation rate was observed for the target artificial sweeteners (ASs). The contribution of heterotrophic microorganisms and autotrophic ammonia oxidizers in biodegradation of the ASs was elucidated, of which autotrophic ammonia oxidizers played an important role in the biodegradation of the ASs, particularly with regards to ACE and SUC.
- Subjects :
- Sucralose
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Bioengineering
General Medicine
Ammonia monooxygenase
Biodegradation
Nitrification
Microbiology
Water Purification
chemistry.chemical_compound
Activated sludge
Biodegradation, Environmental
chemistry
Environmental chemistry
Sweetening Agents
Ammonium Compounds
Bioreactor
Sewage treatment
Ammonium
Waste Management and Disposal
Subjects
Details
- ISSN :
- 18732976
- Volume :
- 161
- Database :
- OpenAIRE
- Journal :
- Bioresource technology
- Accession number :
- edsair.doi.dedup.....e5589772b700f5a5e2d07dd9fa06a035