Treatment of textile effluent with reactive dye 195 by ionic flocculation using coconut surfactant and partially hydrolyzed polyacrylamide
Surfactant, polymer, reactive red dye 195, flocculation.
The dumping of highly colored industrial effluents is a global environmental concern. The annual production of dyes reaches approximately 8x105 tons, 25% of which originates from the textile industry. Textile effluents contaminated with dyes can contain dangerous substances such as acids, teratogens, carcinogens and xenobiotics, posing a threat to human health and the environment. Azo dyes, when left untreated, can alter pH, reduce oxygen levels and harm photosynthesis in aquatic ecosystems. Several wastewater treatment methods have been developed, including coagulation/flocculation, which involves the use of coagulating and flocculant agents to facilitate the removal of dissolved and suspended solids. Partially hydrolyzed polyacrylamide (PHPA) is a water-soluble polymer with great potential as a coagulating agent. Saponified coconut oil (OCS) is a highly water-soluble anionic surfactant that easily aggregates into micelles when in the presence of available ions. This study aims to investigate the action of PHPA and OCS in the treatment of highly colored effluent through a coagulation/flocculation process. Flocculation tests will be carried out on synthetic effluents with Reactive Red 195 dye in different conditions and concentrations of OCS, with and without the addition of PHPA. The research seeks to determine the effectiveness of OCS in dye flocculation and also whether PHPA can simplify or optimize the treatment process.