Submitted by: St. Peter's University
Implemented country: India
Title: Low-cost, sustainable biosorbents for treatment of highly polluting dye house effluents in Tiruppur, South India
The aim of our project is to convert commonly available biomass waste such as tea dredge, orange peel, rice husk, seaweed etc. into an active adsorbent for the removal of pollutants from dye house effluent in Tiruppur, South India. Environmental problems faced by the textile manufacturing units are related to the variety of chemicals used in dyeing, which makes wastewater treatment difficult and expensive. A promising alternative to the conventional effluent treatment process is biosorption, an environmentally friendly, sustainable, low-cost biotechnology. From laboratory studies, we established that tea waste pyrolysed for 2 hrs at 900°C has a sorption capacity of about 40 mg/g using dyes methylene blue and remazol yellow. Based on these data the biosorption group has designed, fabricated and erected a pilot scale biosorption unit in Tiruppur with pyrolysed tea waste as adsorbent. The biosorption unit is currently being commissioned and undergoes a series of performance tests to establish to optimum operating parameters. Once proved effective, biosorption can provide means for recycling wastewater and reduce the pollutant load entering the local river cost effectively.