Combination of biodegradation and fenton process for efficient removal of PDM/ZnO
Journal of Environmental Management, ISSN: 0301-4797, Vol: 302, Issue: Pt A, Page: 114013
2022
- 8Captures
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Metrics Details
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Article Description
In the present study, an investigation was conducted on the removal of polydiallyldimethylammonium chloride-acrylic-acrylamide-hydroxyethyl acrylate/ZnO nanocomposites (PDM/ZnO) through biodegradation and Fenton process coupled treatments. As revealed from the results of the chemical oxygen demand, the total organic carbon, the biochemical oxygen demand and the CO 2 production analysis, PDM/ZnO could be partially biodegraded. The optimal initial pH, the mixed liquid suspended solids concentration and additional carbon source (glucose) dosage in the biodegradation were 7.0, 4.0 g/L and 1.0 g/L, respectively. On the whole, NaCl, the coexisted metal cations (Cu 2+, Zn 2+ and Cr 3+ ) and additional NH 4 Cl inhibited the biodegradation of PDM/ZnO. PDM/ZnO was suggested to adversely affect on microbial community structure and activity. Optimum conditions for Fenton treatment were 50 mg/L Fe 2+, 20 mL/L H 2 O 2 and pH 2.0. Biodegradation showed that 64% of PDM/ZnO was removed. Besides, the combination of Fenton post-treatment could achieve an over 97% removal of PDM/ZnO. Thus, Fenton process combined biodegradation pre-treatment can act as an effective method to remove PDM/ZnO.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0301479721020752; http://dx.doi.org/10.1016/j.jenvman.2021.114013; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85118509071&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/34735834; https://linkinghub.elsevier.com/retrieve/pii/S0301479721020752; https://dx.doi.org/10.1016/j.jenvman.2021.114013
Elsevier BV
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