Seaweed-Based Filtration Patent Granted to Annamalai University Scientist

Innovative Algae-Based Water Purification

M. Arumugam, an Associate Professor at Annamalai University’s Centre of Advanced Study in Marine Biology, has secured an Indian patent for a novel water ultrafiltration system. The invention, titled ‘Preparation of nanoporous phyto-membrane from seaweeds for water ultrafiltration,’ utilizes renewable marine resources to create a sustainable alternative to conventional purification methods. This research received financial backing from the Tamil Nadu State Council for Higher Education (TANSCHE).

The Science of Bioactive Filtration

The patented membrane utilizes a combination of sodium alginate and phlorotannins, both of which are bioactive compounds found naturally in seaweed. According to Arumugam, these materials offer high biocompatibility and functional density. The integration of these elements allows the nanoporous phenolic membrane to strip contaminants from water supplies with high precision. Key filtration capabilities include:

• Removal of bacteria, viruses, and colloidal particles.
• Elimination of organic contaminants and various ions.
• Enhanced microfiltration through a reinforced sodium alginate structure.

Addressing Global Scarcity and Industrial Pollution

The development arrives as urbanization and industrial growth continue to compromise the quality of rivers, lakes, and coastal water systems. Arumugam notes that membrane-based separation serves as a compact and energy-efficient solution compared to traditional high-resource treatments. By leveraging marine biomass, the technology aims to provide a low-cost, eco-friendly remedy for water scarcity, specifically targeting the needs of developing nations where access to safe drinking water remains a constant struggle.

Source: The Hindu — Cities