Eco-friendly approaches to aquaculture wastewater treatment: Assessment of natural coagulants vis-a-vis chitosan

sreenivas Thanks for your question and sorry for late reply. Chitosan is a biopolymer carrying positively charged ions. Therefore, when mixed with wastewater containing suspended particles which are largely negatively charged; charge neutralisation takes place. This reaction leads to aggregation of suspended particles into flocs. Heavy flocs then settle by gravity leaving a top supernatant clean water. The above process is currently being carried out in my laboratory as a green technology for aquaculture wastewater treatment, moving away from chemical coagulants and flocculants.