Algae are the most primitive photosynthetic plants. There are 30,000 species of algae mostly unexplored. Being simpler organisms algae can adapt to any conditions and grow. Algae are very effective CO2 assimilating organisms than higher plants. Algae can tolerate and grow in salt waters, waste water and in toxic industrial effluents. Algae also evolve O2 by photosynthesis. Bio-remediation based on algae has proved very effective in managing a wide variety of effluents.

Among the microorganisms, algae are of predominant interest for the ecological engineer because of their ability to sequester metals and because some algae can live under many extreme environments, often in abundance. Algae grow in a wide spectrum of water qualities, from alkaline environments (Chara, Nitella) to acidic mine drainage waste waters (Mougeotia, Ulothrix). If they could be induced to grow in waste waters, they would provide a simple, longterm means to remove pollutants and radionuclides from industrial and mining effluents.
Reports on the use of microalgae in wastewater treatment are readily available (Przytocka-Jusiak et al., 1984; Craig and Keith, 1995; Craggs et al., 1997; Zimmo et al., 2004). Some algal strains are sensitive to environmental contaminants and can be used to assess the toxicity of landfill leachate (Cle´ment et al., 1996; Baun et al., 1999). In contrast, some other algal strains are tolerant to various environmental stresses, such as acid-tolerant Chorella spp. (Rai et al., 1996) and heavy metals tolerant Scenedesmus spp. (Abd-El-Monem et al., 1998). In addition to the important role in supplying oxygen for bacterial oxidation of organic matter, microalgae may play an active role in the purification processes, including heavy metal and nutrient removal, as well as organic matter assimilation and degradation (Tam and Wong, 1989). Furthermore, cultured algae could be harvested as animal feed or other purposes.


Advantages of Algal Technology


  • pH correction without chemicals
  • Sludge reduction by utilization of salts
  • This technology does not involve any costly chemicals or equipments so very economical
  • Effective reduction of BOD and COD and oxygenation of environment
  • Removal waste CO2 due to photosynthetic fixation ( carbon credits)
  • Useful bio-chemicals ( nutraceutical, pharmaceutical, bio-fertilizer and bio-fuel) from the algal biomass
  • Accepted by PCB
  • Not only the industry can save a lot of money but the environment is also saved



World's First Phycoremediation plant:Dr V Sivasubramanian and his team have set up the First Phycoremediation plant at SNAP Industry. Algal remediation technology helps in pH correction of the acidic effluent and complete reduction of sludge formation. SNAP is now a zero disposal company. The phycoremediation plant has been in operation from September 2006. The effluent generated by the industry is highly acidic and of very high TDS ( 25000 mg/L). The entire effluent is evaporated using slope tank. The algal biomass produced is used in Biofertilizer preparation and sold by the Company. .......(.more )

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Contact Us

For consultancy on algae based remediation, bio-fuels and CO2 mitigation

 Dr V Sivasubramanian

Director Tech

Phyco Spectrum

52 A, A K Block, 7th Main road, (click here for location map), Anna Nagar, Chennai 600040, India

Email to: vsivasubramanian@gmail.com

Phone: 91 044 26208896

Mobile: 91 9677144453 ; 9381487310