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A review on modification methods to cellulose-based adsorbents to improve adsorption capacity
Sanna Hokkanen1, Amit Bhatnagar2, Mika Sillanpää1
1Laboratory of Green Chemistry, LUT Savo Sustainable Technologies, Lappeenranta University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland.
Water Research
|January 21, 2016
Summary
Chemically modified cellulose shows great potential as an eco-friendly adsorbent for removing diverse aquatic pollutants from waste streams. Further research is needed to scale up these cellulose-based adsorbents for commercial pollution control applications.
Area of Science:
- Environmental Science
- Materials Science
- Chemical Engineering
Background:
- Industrial, agricultural, and domestic activities release diverse aquatic pollutants.
- Effective and eco-friendly water treatment technologies are crucial for environmental protection.
- Cellulosic materials offer a sustainable and cost-effective basis for adsorbent development.
Purpose of the Study:
- To review the current research on cellulose and its modified forms as adsorbents.
- To compile and present adsorption capacities of cellulose-based materials for various pollutants.
- To highlight advancements in the preparation of cellulose-based adsorbents.
Main Methods:
- Literature survey of existing research on cellulose-based adsorbents.
- Compilation of adsorption capacities from various studies.
- Analysis of chemical modification techniques for cellulose.
Main Results:
- Chemically modified cellulose generally exhibits higher adsorption capacities than unmodified forms.
- A wide range of cellulose-based adsorbents have been investigated for pollutant removal.
- Modified cellulose demonstrates significant potential for removing heavy metals, anions, organics, and nutrients.
Conclusions:
- Modified cellulose-based adsorbents are effective for removing various aquatic pollutants.
- There is a need for further development to enable commercial-scale application of these adsorbents.
- Advancements in preparation techniques are key to improving the utility of cellulose-based adsorbents for pollution control.
