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Cellulose-Based Hydrogels for Wastewater Treatment: A Concise Review
Maimuna Akter1, Maitry Bhattacharjee2, Avik Kumar Dhar2
1Department of Environmental Management, Independent University Bangladesh, Dhaka 1229, Bangladesh.
Gels (Basel, Switzerland)
|April 3, 2021
Summary
Cellulose-based hydrogels (CBHs) offer an affordable and eco-friendly solution for removing heavy metals and dyes from wastewater. These natural adsorbents show great potential for sustainable water purification and resource conservation.
Area of Science:
- Environmental Science
- Materials Science
- Polymer Chemistry
Background:
- Wastewater contamination by heavy metals and dyes poses a significant environmental challenge.
- Adsorption is a cost-effective method for pollutant removal, with natural adsorbents gaining attention.
- Hydrogels (HGs), particularly cellulose-based hydrogels (CBHs), are promising due to their biodegradability and high adsorption capacity.
Purpose of the Study:
- To review cellulose-based hydrogels (CBHs) as adsorbents for heavy metal and dye removal from wastewater.
- To explore various synthesis techniques and adsorption mechanisms of CBHs.
- To summarize process optimization parameters and suggest future research directions.
Main Methods:
- Literature review focusing on cellulose-based hydrogels for wastewater treatment.
- Analysis of synthesis methods for creating CBH adsorbents.
- Examination of adsorption mechanisms and process parameters affecting pollutant removal.
Main Results:
- CBHs demonstrate excellent adsorption capabilities for heavy metals and dyes.
- Natural polymer-based HGs offer environmental advantages over synthetic alternatives.
- Diverse synthesis routes and mechanisms contribute to the efficacy of CBHs.
Conclusions:
- Cellulose-based hydrogels are highly effective and sustainable adsorbents for wastewater decontamination.
- Further research into synthesis optimization and application is warranted.
- CBHs represent a viable solution for addressing critical water pollution challenges.
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