IIT BHU’s Fungal Breakthrough: Removing Toxic Heavy Metals from Wastewater
IIT BHU researchers develop mushroom-based adsorbent removing cadmium, lead from wastewater – low-cost, green solution tackling India’s water contamination crisis.
Researchers from the Department of Biochemical Engineering at the Indian Institute of Technology (BHU), Varanasi, have developed an innovative, biologically based technology to remove toxic heavy metals such as cadmium and lead from wastewater. Led by Associate Professor Dr. Vishal Mishra and his PhD scholar Dr. Veer Singh, the team created a fungus‑driven adsorbent derived from mushroom biomass that offers a safer, low‑cost alternative to conventional chemical treatment methods.
The research also involved Professor Mohan P. Singh and Dr. Nidhi Singh from Allahabad University, along with Professor Abha Mishra from IIT (BHU). The team acknowledges their collective collaboration, which strengthened the technical and experimental foundations of the project. Building on earlier work on fungal biosorption, the group has now filed a patent for their technology, marking a significant step toward practical deployment.
How the mushroom‑based adsorbent works
The technology uses fungal biomass sourced from specific mushroom species as a base material. The researchers treat this biomass to enhance its surface properties and then combine it with selected biopolymers that increase the material’s adsorption capacity. When the resulting adsorbent comes into contact with contaminated water, it binds and traps heavy metal ions such as cadmium and lead, effectively reducing their concentration in the effluent.
The solution is designed to remove multiple heavy metals simultaneously, which is crucial for industrial wastewater where more than one contaminant is often present. The process operates under mild conditions, avoids expensive chemicals or complex equipment, and requires minimal energy input, making it suitable for both small‑scale and larger treatment setups.
A low‑cost, scalable tool against water pollution
The research team highlights the low cost, non‑toxic nature, and environmental friendliness of the adsorbent as key advantages. Unlike many conventional methods that generate sludge or secondary chemical waste, this biological approach minimises additional pollution while keeping operational expenses low. The material is also readily scalable, as mushroom biomass and the supporting biopolymers are available or producible in significant quantities.
Dr. Vishal Mishra explained that the technology could be especially useful in developing regions and rural areas, where access to advanced water treatment infrastructure and clean‑water supplies remains limited. “Our solution can be integrated into existing wastewater treatment setups or used as a standalone unit near small industries, textile units, and tanneries that discharge heavy‑metal‑laden effluents,” he said, adding that the method is simple to operate and maintain.
Addressing a global water health crisis
The motivation for the project stems from the growing global water‑pollution crisis. According to the World Health Organization, around 3.4 million people die every year due to waterborne diseases linked to contaminated supplies. UNICEF reports that approximately 4,000 children die every day from consuming unsafe water, underscoring the urgent need for affordable purification technologies.
In India, government data indicate that over 239 million people across 153 districts consume water with toxic metals such as chromium, lead, cadmium, and arsenic above prescribed limits. Long‑term exposure to these elements is associated with serious health impacts, including kidney damage, neurological disorders, and various cancers. The mushroom‑based adsorbent targets some of these key pollutants, offering a biological route to safer water.
A step toward sustainable clean‑water solutions
Reacting to the achievement, IIT (BHU) Director Prof. Amit Patra praised the team for aligning cutting‑edge research with real‑world environmental and public‑health challenges. “The development of a low‑cost, environmentally friendly technology for removing toxic heavy metals from wastewater is an important step toward providing clean and safe water, especially in resource‑limited areas,” he said.
He added that the innovation reflects the institute’s commitment to sustainable, impact‑driven research. “This work not only advances scientific understanding in the field of bioremediation and adsorption, but also contributes directly to community welfare and environmental protection,” he noted.
By combining mushroom biomass, biopolymers, and smart material design, the IIT (BHU) team has created a promising biological tool that could help industries and municipalities tackle heavy‑metal pollution more safely and affordably, strengthening efforts to address the global water crisis.
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