Highly effective water hyacinth (Eichhornia crassipes) waste-based functionalized sustainable green adsorbents for antibiotic remediation from wastewater.

Autor: Kabir MM; Department of Environmental Science & Disaster Management, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh; Research Cell, Noakhali Science & Technology University, Noakhali, 3814, Bangladesh. Electronic address: mahbub556.esdm@nstu.edu.bd., Alam F; Department of Environmental Science & Disaster Management, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh., Akter MM; Department of Environmental Science & Disaster Management, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh., Gilroyed BH; School of Environmental Sciences, University of Guelph Ridgetown Campus, Ridgetown, N0P 2C0, Canada., Didar-Ul-Alam M; Research Cell, Noakhali Science & Technology University, Noakhali, 3814, Bangladesh., Tijing L; Centre for Technology in Water and Wastewater (CTWW), School of Civil and Environmental Engineering, University of Technology Sydney (UTS), 15 Broadway, Ultimo, 2007, New South Wales, Australia; ARC Research Hub for Nutrients in a Circular Economy, University of Technology Sydney, PO Box 123, 15 Broadway, Ultimo, New South Wales, 2007, Australia., Shon HK; Centre for Technology in Water and Wastewater (CTWW), School of Civil and Environmental Engineering, University of Technology Sydney (UTS), 15 Broadway, Ultimo, 2007, New South Wales, Australia; ARC Research Hub for Nutrients in a Circular Economy, University of Technology Sydney, PO Box 123, 15 Broadway, Ultimo, New South Wales, 2007, Australia. Electronic address: Hokyong.Shon-1@uts.edu.au.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2022 Oct; Vol. 304, pp. 135293. Date of Electronic Publication: 2022 Jun 16.
DOI: 10.1016/j.chemosphere.2022.135293
Abstrakt: Azithromycin (AZIM) is considered as one of the most frequently prescribed antibiotics (ABs) in the world by medical professionals. This study explored, two novel, cheap and environmentally beneficial adsorbents i.e., alkali treated water hyacinth powder (AT-WHP) and graphene oxide-water hyacinth-polyvinyl alcohol (GO-WH-PVA) composite, fabricated from water hyacinth (Eichhornia crassipes) waste to remediate AZIM from wastewater. Biosorption experiments were performed by batch and packed-bed column studies and the adsorbents were characterized using various instrumental methods. The morpho-chemical profile of the adsorbents suggested noteworthy AZIM adsorption. AZIM adsorption data can be reasonably explained by pseudo second order (PSO) kinetic model with maximum regression coefficient (R 2  > 0.99) and lowest Marquardt's present standard deviation (MPSD) and root mean squared error (RMSE) values. The isotherm models recommended Langmuir and Temkin to be the best-fitted, providing highest regression coefficient and lowest error values. Conferring to Langmuir model, the theoretical highest adsorption potentials (q max ) were accounted to be 244.498 and 338.115 mg/g for AT-WHP and GO-WH-PVA, correspondingly, very close to experimental values (q e , exp). AZIM adsorption processes were governed by the chemisorption mechanisms. The adsorbents had excellent regeneration potential and could be reused several times. In order to scale-up application of the adsorbents, performance of a 100 L packed-bed reactor was assessed and a breakthrough time of adsorption for GO-WH-PVA was 15 min in 5000 mg/L AZIM concentration. Thus, the absorbents synthesized in this study can be considered highly effective at removal of AZIM from wastewater.
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Databáze: MEDLINE
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