Moringa Seed Cake for Removing Chromium from Contaminated Water

Meneghel et al. · 2013

Heavy-metal pollution of water is a serious health and environmental problem, and conventional removal can be costly. This study tested Moringa oleifera seed cake — the residue left after oil extraction — as a low-cost biosorbent for removing chromium from contaminated water.

Published in Química Nova, the work evaluated solution pH, adsorbent mass, contact time, adsorption isotherms, thermodynamics, kinetics and desorption, with activated carbon as a benchmark.

Key findings

Maximum chromium adsorption capacity was about 3.19 mg per gram of moringa biosorbent.
The Langmuir isotherm best described adsorption for both moringa and activated carbon.
Desorption results indicated the material could be regenerated and reused.

Why it matters for MORIFA: This points to a high-value second life for moringa seed cake, our oil-pressing by-product: heavy-metal remediation. It strengthens a circular-economy story (oil + cake + water-treatment use) that appeals to sustainability-minded buyers.

Caveat: a laboratory adsorption study on chromium specifically; real effluents contain mixed contaminants that affect performance.

Summary of: Meneghel, A. P. et al. (2013). “Biosorption and removal of chromium from water by using moringa seed cake (Moringa oleifera Lam.).” Química Nova, 36(8), 1104-1110. DOI: 10.1590/S0100-40422013000800005. Summarised by MORIFA; full paper via the link above.

This page summarises independent, third-party research for educational purposes. MORIFA does not claim authorship of the original study; please consult the original publication via the link above.