Adsorption studies on wastewaters from cypermethrin manufacturing process using activated coconut shell carbon

Area of Science:

• Environmental Chemistry
• Materials Science
• Chemical Engineering

Background:

• Cypermethrin, a widely used pyrethroid pesticide, poses environmental challenges in industrial wastewater.
• Effective treatment methods are crucial for removing cypermethrin and associated pollutants from manufacturing effluents.

Purpose of the Study:

• To investigate the adsorption efficiency of coconut shell-based activated carbon for removing color and organic matter from cypermethrin industrial wastewater.
• To evaluate the impact of operational parameters like carbon dosage, pH, and contact time on Chemical Oxygen Demand (COD) removal.

Main Methods:

• Adsorption experiments were conducted using coconut shell-based activated carbon.
• The influence of varying carbon dosages, pH levels, and contact times on wastewater treatment was analyzed.
• Equilibrium and kinetic studies were performed, fitting data to Freundlich and Langmuir adsorption models.

Main Results:

• Coconut shell activated carbon demonstrated significant efficiency in removing color and organic matter.
• Optimized conditions were identified for carbon dosage, pH, and contact time, leading to enhanced COD removal.
• Adsorption data fitted well with both Freundlich and Langmuir models, indicating favorable adsorption characteristics.

Conclusions:

• Activated coconut shell carbon is a highly efficient adsorbent for treating cypermethrin industrial wastewater.
• The findings support the use of this sustainable material for effective pesticide wastewater remediation.