NDLI: Eco-Friendly Biosorbents Based on Microbial Biomass and Natural Polymers: Synthesis, Characterization and Application for the Removal of Drugs and Dyes from Aqueous Solutions

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Eco-Friendly Biosorbents Based on Microbial Biomass and Natural Polymers: Synthesis, Characterization and Application for the Removal of Drugs and Dyes from Aqueous Solutions

Content Provider	MDPI
Author	Cristina-Gabriela, Grigoraș Rusu, Lăcrămioara Suceveanu, Elena Mirela Simion, Andrei-Ionuț Botezatu, Andreea Veronica Dediu Istrate, Bogdan Doroftei, Ioan
Copyright Year	2021
Description	Pharmaceuticals and dyes are a very important part of the nonbiodegradable or hard biodegradable substances present in wastewater. Microorganisms are already known to be effective biosorbents, but the use of free microbial cells involves difficulties in their separation from effluents and limits their application in wastewater treatment. Thus, this study aimed to develop biosorbents by immobilizing Saccharomyces cerevisiae, Saccharomyces pastorianus and Saccharomyces pastorianus residual biomass on natural polymers (alginate and chitosan) and to evaluate the biosorptive potential for removal of pharmaceuticals and dyes from water. Six types of biosorbents were synthesized and characterized by Scanning Electron Microscopy and Fourier Transform Infrared Spectroscopy techniques and their biosorptive capacities for three drugs (cephalexin, rifampicin, ethacridine lactate) and two dyes (orange II and indigo carmine) were evaluated. The obtained results show that the removal efficiency depends on the polymer type used for the immobilization. In case of alginate the removal efficiency is between 40.05% and 96.41% for drugs and between 27.83% and 58.29% for dyes, while in the case of chitosan it is between 40.83% and 77.92% for drugs and between 17.17% and 44.77% for dyes. In general, the synthesized biosorbents proved to be promising for the removal of drugs and dyes from aqueous solutions.
Starting Page	4810
e-ISSN	19961944
DOI	10.3390/ma14174810
Journal	Materials
Issue Number	17
Volume Number	14
Language	English
Publisher	MDPI
Publisher Date	2021-08-25
Access Restriction	Open
Subject Keyword	Materials Environmental Engineering Biosorption Saccharomyces Cerevisiae Saccharomyces Pastorianus Alginate Chitosan Drug Dye
Content Type	Text
Resource Type	Article

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