Bio-sorption of physico-chemical constituents in textile dyeing effluent using Spirogyra gracilis Kützing

Abstract Dyes are mostly used in large quantities for colouring processes in textile industries. During this process huge amount of water is consumed and released into environment which is harmful to the aquatic animals, plants and human beings. Various physico-chemical techniques have been employed for the removal of dyes from wastewater and these methods create a major problem in the disposal of the concentrated sludge. To combat this problem, algae have been used in the bioremediation of textile dyeing effluent which have attracted the researchers to great interest. The present work has been aimed for the characterisation of physico-chemical parameters such as colour, odour, temperature, pH, electrical conductivity, total suspended solids, total dissolved solids, total solids , chemical oxygen demand, total hardness, alkalinity, dissolved oxygen, biological oxygen demand, chlorides, sulphates, phosphates, nitrate, lead, chromium , zinc and oil and grease in the textile dyeing effluent. The results showed that the above physico-chemical parameters decreased when treated with Spirogyra gracilis which falls within the limits prescribed by BIS except dissolved oxygen