Mass cultivation of micro algae for biofuels and other useful products:
Dr V Sivasubramanian is involved in mass cultivation of selected micro algae in open ponds and closed photobioreactors for biofuels, biofertilizer, cattle feed and other useful products. Parameters like nutrient addition, harvesting and processing have been standardized. Simple and cost effective harvesting technology has been developed and being implemented in algal farms. A combination of open raceway ponds bioreators has been developed to achieve maximum productivity which is economically viable. Economics has been worked out for large scale production of algae. Technology to utilize flu gas from thermal power station has also been developed. (CLICK HERE FOR A NEWS ITEM IN DECCAN CHRONICLE. Click here for news item in pdf).
Mass cultivation of micro algae in open tank
Marine diatoms for bio-diesel
Mass cultivation technology for marine diatoms has been designed and developed by our team in facility near Chennai coast. Nutrient addition, induction of lipid production and harvesting have been standardized. Based on the pilot scale trials economically viable seawater cultivation of marine diatoms for biodiesel is available with us for commercialization
Diatom biomass rich in oil
IRAN's First Algal cultivation system developed with technical support from
Dr V Sivasubramanian
With technical support from PERC, Chennai, ALGIRAN, an Iranean algal biotech company has established a pilot demonstration facility at Chabahar Freezone, Iran. Dunaliella rich in beta carotene is being grown here. MORE
Algal biomass production integrated with Phycoremediation
Dr V Sivasubramanian has been involved in developing algae based technology to treat industrial effluents and wastewater. Algal technology for treating effluents has been implemented in a number of industries for the past 10 years. Algae based solution has been delivered to alginate industry, leather processing chemicals industry, detergent industry, electroplating industry, confectionery industry, textile dyeing industries, oil drilling effluent treatment plant and more recently copper smelting industry.
The main advantage of phycoremediation is complete avoidance of chemicals normally employed by various industries to correct pH, remove colour and odour, remove sludge etc. The industries save lot of chemicals and huge amount of energy. Algal technology involves maintenance of the critical level of algal biomass for effective remediation of effluents.
World’s First Phycoremediation plant to treat industrial effluent was commissioned in SNAP Natural and Alginate products at Ranipet, Tamilnadu. This industry generates huge volume of highly acidic effluent with a high TDS. Algal technology is being effectively employed to correct pH and reduce sludge with lots of benefits to industry as well as to the environment. In the process this industry also generates huge amount of algal biomass which is being incorporated into a bio-fertilizer product. Dr V S is working on other possibilities of utilizing algal biomass including biogas, bio-ethanol and biodiesel. Studies have shown that algae grown in the effluent is highly suitable for biodiesel application.
Other industrial effluents which Dr V S has found favourable for algal biomass production are textile dyeing industry effluent and effluents from confectionery industries. Dr V S has successfully grown Chlorella species in confectionery industry effluent to correct pH and remove sugars. Chlorella sp grown in confectionery effluent produces higher amount of lipids. One of the textile dyeing industries which employs algal technology to remove dyes and reduce BOD and COD, is harvesting algae, dry the slurry and the dried algal cakes are being used in boilers along with firewood. The calorific value of algal cake has been analyzed and it was found to be superior.
Sludge produced by various industries could be also used as nutrient source for growing certain types of micro algae. Dr V S has investigated the biochemistry of sludge grown algae and found highly suitable for biodiesel production.
Algal biomass production integrated with remediation is the best option since it will not encroach upon agricultural land and water. Growing algae in waste water will make the whole process very cheaper and economically viable one.
Energy from Sewage
Dr V Sivasubramanian has developed technology and identified algal strains to effectively treat sewage and produce valuable algal biomass. Micro algae, being photosynthetic, utilize CO2 and evolve oxygen which initiates oxidation of organics in sewage by aerobic bacteria. The resultant degradation products form a rich source of nutrients for algal growth. Micro algae also remove nutrients like nitrates and phosphates thereby reducing eutrophication process. The algal biomass generated is further processed for bio-fuel generation. Dr V S has visited several cities including Hyderabad, Bangalore and Chennai to assess quantum of sewage available for algal biomass generation and production of bio-fuels. Dr V S is planning to setup pilot plants in different locations for sewage treatment using micro algae.
Bio-diesel from Algae:
Algal species producing higher oil at field level have been identified and successfully cultivated in open raceway ponds. The techniques of harvesting, extraction and transesterification have been standardized. Cheaper nutrient sources and Simpler and effective harvesting techniques have been evolved to minimize the cost of production of algal biomass and oil extraction.... MORE