Journal
POLYMERS
Volume 14, Issue 23, Pages -Publisher
MDPI
DOI: 10.3390/polym14235326
Keywords
biosorption; heavy metals; heteropolysaccharides; remediation; wastewater
Categories
Funding
- Scientific Grant Agency of the Slovak Republic Ministry of Education
- Slovak Academy of Sciences [VEGA 1/0175/22, VEGA 1/0139/22]
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Biosorption is an effective technique for treating heavy-metal-bearing wastewaters, and xanthan and gellan are emerging as new green-based materials for the cost-effective and efficient remediation of heavy metal-contaminated waters.
Biosorption is considered an effective technique for the treatment of heavy-metal-bearing wastewaters. In recent years, various biogenic products, including native and functionalized biopolymers, have been successfully employed in technologies aiming for the environmentally sustainable immobilization and removal of heavy metals at contaminated sites, including two commercially available heteropolysaccharides-xanthan and gellan. As biodegradable and non-toxic fermentation products, xanthan and gellan have been successfully tested in various remediation techniques. Here, to highlight their prospects as green adsorbents for water decontamination, we have reviewed their biosynthesis machinery and chemical properties that are linked to their sorptive interactions, as well as their actual performance in the remediation of heavy metal contaminated waters. Their sorptive performance in native and modified forms is promising; thus, both xanthan and gellan are emerging as new green-based materials for the cost-effective and efficient remediation of heavy metal-contaminated waters.
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