Starch-based hydrogels for environmental applications: A review.

Area of Science:

• Environmental Science
• Materials Science
• Polymer Chemistry

Background:

• Water scarcity and contamination by industrial, agricultural, and domestic pollutants pose significant environmental and health risks.
• Hydrogels, with their high water-absorbing capacity, are versatile materials with applications in various fields.
• Plant-based polysaccharides are preferred for developing environmentally friendly hydrogels due to their non-toxicity, biodegradability, and availability.

Purpose of the Study:

• To review the preparation methods and applications of starch-based hydrogels (SBHs) as adsorbents for water purification.
• To highlight the advantages of using starch as a base material for hydrogels.
• To discuss strategies for overcoming the limitations of native starch in hydrogel applications.

Main Methods:

• Review of existing literature on the synthesis and modification of starch-based hydrogels.
• Analysis of the application of SBHs in the removal of organic dyes, hazardous materials, and toxic ions from water.
• Discussion of the properties and performance of various SBH adsorbents.

Main Results:

• Starch-based hydrogels (SBHs) show significant potential for removing pollutants from water.
• Modification of starch is crucial to enhance hydrogel stability, water solubility, and adsorption efficiency.
• Various compounds can be combined with starch to create effective SBH adsorbents for diverse contaminants.

Conclusions:

• Starch-based hydrogels are promising, cost-effective, and environmentally friendly materials for wastewater treatment.
• Optimized SBHs can efficiently remove organic dyes and toxic metal ions, contributing to cleaner water resources.
• Further research into modification techniques can unlock the full potential of SBHs in environmental remediation.