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Preparation of a bacterial flocculant by using caprolactam as a sole substrate and its application in amoxicillin removal.
- Source :
-
Journal of Environmental Management . Sep2021, Vol. 294, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- High cost is one of the limiting factors in the industrial production of bioflocculant. Simultaneous preparation of bioflocculant from the contaminants in wastewater was considered as a potential approach to reduce the production cost. In this study, caprolactam was verified as sole feedstock for the growth of strain Alcaligenes faecalis subsp. phenolicus ZY-16 in batch experiments. Chemical analysis showed that the as-prepared MBF-16 consisted of heteropolysaccharides (88.3%) and peptides (9.4%). XPS result indicated the plentiful acylamino, hydroxyl and amino groups in MBF-16, which have an indispensable role in amoxicillin flocculation. The flocculation of amoxicillin can be well stimulated by Freundlich isotherm equation, and the K f was up to 178.6524 for amoxicillin. The kinetic fitting results proved that the flocculation of amoxicillin by MBF-16 was chemisorbed. This contribution may develop a novel technology for the preparation of bacterial flocculants that can consume toxic substrates (caprolactam) and have potential applications in amoxicillin removal. • Caprolactam could be an available feedstock to produce bioflocculants. • Hydroxyl, amino and acylamino groups are abundant in the bioflocculant. • Cation-independent flocculant is produced by Alcaligenes faecalis. • Chemisorption is involved in amoxicillin and the bioflocculant. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03014797
- Volume :
- 294
- Database :
- Academic Search Index
- Journal :
- Journal of Environmental Management
- Publication Type :
- Academic Journal
- Accession number :
- 151429065
- Full Text :
- https://doi.org/10.1016/j.jenvman.2021.113026