Non-fired Beads Better In Removing Heavy Metal Ions From Water: Study | Varanasi News – Times of India

Varanasi: A comparative study conducted by a team of IIT(BHU) revealed the adsorption capacity of fired and non-fired beads in removing copper, nickel and zinc ions from the aqueous phase. The research has been published in the Journal of Environmental Chemical Engineering, published by Taylor and Francis online.
The study found that both fired and non-fired beads can be reused for four cycles of adsorption-desorption. Comparing adsorption capacities revealed that non-fired beads removed copper, nickel and zinc ions better than fired beads. Among Random Forest Regression and Decision Tree Regression, former predicted better results than the latter, based on bootstrap aggregation and multiple decision trees.
The principal researcher of the School of Biochemical Engineering, Dr Vishal Mishra said that adsorption is a cost-effective and eco-friendly way to combat heavy metal pollution.
He said, “The present research work advances our understanding of metal ion adsorption on novel beads and will assist in future applications through the accumulation of reliable data in the scientific literature.” The other members of the team include Jyoti Singh and Sarvanshi Swaroop.
Dr Mishra said that machine learning algorithms were used to identify the scale-up criterion and reactor configuration for beads-mediated reactors.
Recent research on predicting metal ion adsorption has focused on machine learning and artificial intelligence which reduces the number of experiments, time, and complexity and also saves time and resources, he added.
Dr Mishra said that heavy metals are non-biodegradable, harmful, and persistent pollutants in the environment. Zinc is the 23rd most abundant element in the Earth’s crust, and its concentration in wastewater is steadily increasing. Zinc contamination occurs in water from plating and mining operations, fertilizer and fiber plants, and paper mills. N
aturally occurring and man-made copper contamination in water is documented. Copper overdose causes convulsions, cramps, vomiting, and even death. Forging, mineral processing, steam power plants, and paint formulation industries discharges are a major source of nickel pollution. .
Dr Mishra said adsorbents that are cheap and eco-friendly must be developed.