Solid liquid separation is often an integral part of any effluent treatment unit. It is required for the retention of solid fines from effluent prior to recycling of water discharging into rivers to prevent water pollution. The retained solid fines may have high reuse value. Flocculants are used for this purpose. Natural polymer based flocculants have started gaining importance for their ecofriendly nature and their natural inertness to pH changes.