Efficient phenol degradation by laccase immobilized on functional magnetic nanoparticles in fixed bed reactor under high‐gradient magnetic field
| Autor: | Chen Guo, Chun-Zhao Liu, Chun-Lei Liu, Mei Feng, Ting-Ting Xia |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Environmental Engineering Materials science Bioengineering 01 natural sciences Industrial wastewater treatment 03 medical and health sciences chemistry.chemical_compound 010608 biotechnology fixed bed reactor Phenol Research Articles 030304 developmental biology Laccase 0303 health sciences technology industry and agriculture Biodegradation magnetic immobilized laccase Volumetric flow rate chemistry Chemical engineering high‐gradient magnetic field Volume fraction Degradation (geology) Magnetic nanoparticles phenol degradation TP248.13-248.65 Biotechnology Research Article |
| Zdroj: | Engineering in Life Sciences Engineering in Life Sciences, Vol 21, Iss 6, Pp 374-381 (2021) |
| ISSN: | 1618-2863 1618-0240 |
| Popis: | Enzymatic degradation of emerging contaminants has gained great interest for the past few years. However, free enzyme often incurs high costs in practice. The immobilized laccase on the polyethylenimine (PEI)‐functionalized magnetic nanoparticles (Fe3O4–NH2–PEI–laccase) was fabricated to efficiently degrade phenolic compounds continuously in a newly fixed bed reactor under a high‐gradient magnetic field. The degradation rate of continuous treatment in the bed after 18 h was 2.38 times as high as that of batch treatment after six successive operations with the same treatment duration. Under the optimal conditions of volume fraction of nickel wires mesh, flow rate of phenol solution, phenol concentration, and Fe3O4–NH2–PEI–laccase amount, the degradation rate of phenol kept over 70.30% in 48 h continuous treatment. The fixed bed reactor filled with Fe3O4–NH2–PEI–laccase provided a promising avenue for the continuous biodegradation of phenolic compounds for industrial wastewater in practice. |
| Databáze: | OpenAIRE |
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