Cellulose-Based Hydrogels for Wastewater Treatment: A Concise Review
| Autor: | Fahim Bin Abdur Rahman, Avik Kumar Dhar, S M Fijul Kabir, Maitry Bhattacharjee, Siddika Haque, Maimuna Akter, Taslim Ur Rashid |
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| Rok vydání: | 2021 |
| Předmět: |
Polymers and Plastics
Bioengineering Context (language use) 02 engineering and technology Review 010402 general chemistry 01 natural sciences Biomaterials lcsh:Chemistry chemistry.chemical_compound Adsorption lcsh:General. Including alchemy lcsh:Inorganic chemistry Cellulose lcsh:Science wastewater chemistry.chemical_classification dye Organic Chemistry Polymer Biodegradation heavy metal 021001 nanoscience & nanotechnology lcsh:QD146-197 cellulose 0104 chemical sciences chemistry Wastewater Chemical engineering lcsh:QD1-999 Self-healing hydrogels Sewage treatment lcsh:Q hydrogel 0210 nano-technology lcsh:QD1-65 |
| Zdroj: | Gels Gels, Vol 7, Iss 30, p 30 (2021) |
| ISSN: | 2310-2861 |
| Popis: | Finding affordable and environment-friendly options to decontaminate wastewater generated with heavy metals and dyes to prevent the depletion of accessible freshwater resources is one of the indispensable challenges of the 21st century. Adsorption is yet to be the most effective and low-cost wastewater treatment method used for the removal of pollutants from wastewater, while naturally derived adsorbent materials have garnered tremendous attention. One promising example of such adsorbents is hydrogels (HGs), which constitute a three-dimensional polymeric network of hydrophilic groups that is highly capable of adsorbing a large quantity of metal ions and dyes from wastewater. Although HGs can also be prepared from synthetic polymers, natural polymers have improved environmental benignity. Recently, cellulose-based hydrogels (CBHs) have been extensively studied owing to their high abundance, biodegradability, non-toxicity, and excellent adsorption capacity. This review emphasizes different CBH adsorbents in the context of dyes and heavy metals removal from wastewater following diverse synthesis techniques and adsorption mechanisms. This study also summarizes various process parameters necessary to optimize adsorption capacity followed by future research directions. |
| Databáze: | OpenAIRE |
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