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Related Experiment Video

Updated: Jul 15, 2026

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis

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COD and BOD reduction from coffee processing wastewater using Avacado peel carbon.

Rani Devi¹, Vijender Singh, Ashok Kumar

¹Department of Energy and Environmental Science, Ch Devi Lal University, Sirsa, Haryana, India. rani_sahu@yahoo.com

Bioresource Technology

|May 12, 2007

Summary

Avocado peel carbon effectively reduces chemical oxygen demand (COD) and biological oxygen demand (BOD) in coffee processing wastewater. This sustainable method shows comparable results to commercial activated carbon for wastewater treatment.

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Area of Science:

Environmental Science
Chemical Engineering
Materials Science

Background:

Coffee processing generates wastewater with high chemical oxygen demand (COD) and biological oxygen demand (BOD).
Conventional wastewater treatment methods can be costly and less effective for decentralized sectors.
Activated carbon is a known adsorbent for removing pollutants from wastewater.

Purpose of the Study:

To assess the efficacy of activated carbon derived from avocado peels (APC) in reducing COD and BOD in coffee processing wastewater.
To compare the performance of APC with commercial activated carbon (CAC).
To determine optimal operating conditions for maximum pollutant reduction.

Main Methods:

Wastewater treatment was conducted in batch mode.
The study investigated the effect of various operating parameters on COD and BOD reduction.
Adsorption isotherms were studied to understand the adsorption mechanism.
Results from APC and CAC were compared.

Main Results:

Avocado peel carbon (APC) achieved a maximum COD reduction of 98.20% and BOD reduction of 99.18%.
Commercial activated carbon (CAC) achieved a maximum COD reduction of 99.02% and BOD reduction of 99.35%.
The adsorption capacity of APC was found to be comparable to CAC.

Conclusions:

Activated carbon from avocado peels is a viable and cost-effective adsorbent for treating coffee processing wastewater.
APC offers a promising sustainable solution for domestic wastewater treatment in decentralized sectors.
The study highlights the potential of agricultural waste valorization for environmental remediation.