Investigating the Use of Water Hyacinth and Rice Hull Biochars to improve the growth of Vigna unguiculata in Cadmium Contaminated Soils

Abstract

The increase of fossil fuel combustion; application of chemical fertilisers; and advances in metallurgical techniques have prompted the need for sustainable alternatives that remedy heavy metal contamination of soil. Studies show that bio char is an efficient and cost effective material derived from organic biomass; it has the ability to adsorb and remediate heavy metal polluted soils.