Abstract:
Heavy metal contamination, such as chromium (Cr), poses global threats to soil, water, and human health. Bio char is an effective adsorbent for mitigating heavy metal toxicity, remediating polluted environments, and promoting plant growth under stress. This study evaluated the effects of Allium sativum peel bio char, produced via concentrated sulfuric acid carbonization (CSGPB) and high-temperature carbonization (HTGPB), on Cyamopsis tetragonoloba under Cr-stress in a Nutrient Film Technique (NFT) hydroponic system. The results showed that combining two bio char treatments showed better results in mitigating the growth of guar plants under Cr-stress. Increasing the pH and EC values of water reduced the mobility and plant availability of the heavy metal chromium, resulting in an 87.78 % reduction of Cr in guar, along with enhanced antioxidant enzyme activities, alleviation of oxidative stress, improved nutrient absorption, primary metabolite synthesis, and soluble sugar and protein levels, and significant growth promotion with a 123.8 % increase in biomass. This study underscores the potential of bio char (CSGPB-HTGPB) as a high performance adsorbent for remediating Cr-contaminated water in flow-through systems, offering a theoretical basis for addressing heavy metal pollution.
Page(s):
29-29
DOI:
DOI not available
Published:
Journal: 1st International Conference on "Recent Advances in Green Biotechnology and Climate Resilience", September 15-16, 2025, Volume: 1, Issue: 1, Year: 2025