Keratin particles generated from rapid hydrolysis of waste feathers with green DES/KOH : Efficient adsorption of fluoroquinolone antibiotic and its reuse

Copyright © 2021 Elsevier B.V. All rights reserved..

Fluoroquinolone antibiotics are widely used in human and veterinary medicine. However, untreated fluoroquinolone seriously threatens the ecosystem and human health. In this study, deep eutectic solvents (DESs) were applied for the hydrolysis of waste feathers, and the keratin particles (KPs) in a low-cost teabag were utilized to adsorb fluoroquinolone norfloxacin. Results showed that choline chloride/ethylene glycol DES rapidly hydrolyzed feathers within 10 min, and the undissolved particles effectively adsorbed norfloxacin. Adding KOH markedly shortened the hydrolysis time (6 min) and increased the adsorption ability of KPs. The optimum hydrolysis conditions were DES ratio of 1 g: 4.67 g, KOH of 35.68 g L-1, and temperature of 90 °C. When KPDES+KOH of 2 g L-1, norfloxacin of 25 mg L-1, and pH0 7 were used, 94% of norfloxacin was removed in 60 min. A low-cost teabag effectively separated the KPs from the solution after adsorption and did not decrease the adsorption ability of the KPs. The Langmuir isotherm model well described the adsorption behavior of KPsDES+KOH (qmax = 79.36 mg g-1, R2 = 0.9972). In addition, acetone efficiently regenerated the exhausted KPsDES+KOH. The KPs maintained >80% of its adsorption ability after seven cycles of regeneration.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:173

Enthalten in:

International journal of biological macromolecules - 173(2021) vom: 15. März, Seite 211-218

Sprache:

Englisch

Beteiligte Personen:

Chao, Shu-Ju [VerfasserIn]
Chung, Kuo-Hao [VerfasserIn]
Lai, Yi-Fen [VerfasserIn]
Lai, Yu-Kuei [VerfasserIn]
Chang, Shih-Hsien [VerfasserIn]

Links:

Volltext

Themen:

68238-35-7
Adsorption
Anti-Bacterial Agents
Choline
Deep eutectic solvent
Ethylene Glycol
FC72KVT52F
Fluoroquinolones
Industrial Waste
Journal Article
Keratins
N0F8P22L1P
N91BDP6H0X
Norfloxacin
Solvents
Waste feather

Anmerkungen:

Date Completed 26.07.2021

Date Revised 26.07.2021

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.ijbiomac.2021.01.126

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM320444449