In:
Environmental Engineering Research, Korean Society of Environmental Engineering, Vol. 29, No. 3 ( 2023-09-16), p. 230196-0
Abstract:
This study explores the adsorption of doxycycline (DOX) from aqueous solutions onto biochar derived from banana peel, which was prepared using a potassium hydroxide activation method (KOH-BPB). The biochar properties were characterized based on morphology, surface area (SBET of 710.241 m 〈 sup 〉 2 〈 /sup 〉 g 〈 sup 〉 -1 〈 /sup 〉 ), functional groups, and surface charge (pHPZC = 7.7). Parameters, including initial pH, DOX concentration, and ionic strength, that influenced the DOX adsorption capacity of KOH-BPB were examined. Adsorption equilibrium of DOX on KOH-BPB was assessed through four isothermal models: the Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich models. The obtained data were most compatible with the Langmuir model (R 〈 sup 〉 2 〈 /sup 〉 = 0.9879). KOH-BPB has a maximum DOX absorption capacity of 121.95 mg g 〈 sup 〉 -1 〈 /sup 〉 which exceeds that of many comparable absorbents. The maximum DOX removal was 96.7% at pH 6, a DOX concentration of 20 mg L 〈 sup 〉 -1 〈 /sup 〉 , and a KOH-BPB dose of 1.0 g L 〈 sup 〉 -1 〈 /sup 〉 . These findings reveal that biochar from banana peel effectively removes antibiotic residues from water. This study provides a potential, low-cost, and environmentally friendly adsorbent.
Type of Medium:
Online Resource
ISSN:
1226-1025
,
2005-968X
DOI:
10.4491/eer.2023.196
Language:
English
Publisher:
Korean Society of Environmental Engineering
Publication Date:
2023
detail.hit.zdb_id:
2976690-4
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