Details

Autor(en) / Beteiligte

• Prajapati, Sanjeev Kumar
• Kaushik, Prachi
• Malik, Anushree
• Vijay, Virendra Kumar

Titel

Phycoremediation coupled production of algal biomass, harvesting and anaerobic digestion: Possibilities and challenges

Ist Teil von

• Biotechnology advances, 2013-12, Vol.31 (8), p.1408-1425

Ort / Verlag

Kidlington: Elsevier Inc

Erscheinungsjahr

2013

Quelle

MEDLINE

Beschreibungen/Notizen

• Biogas produced from anaerobic digestion is a versatile and environment friendly fuel which traditionally utilizes cattle dung as the substrate. In the recent years, owing to its high content of biodegradable compounds, algal biomass has emerged as a potential feedstock for biogas production. Moreover, the ability of algae to treat wastewater and fix CO2 from waste gas streams makes it an environmental friendly and economically feasible feedstock. The present review focuses on the possibility of utilizing wastewater as the nutrient and waste gases as the CO2 source for algal biomass production and subsequent biogas generation. Studies describing the various harvesting methods of algal biomass as well as its anaerobic digestion have been compiled and discussed. Studies targeting the most recent advancements on biogas enrichment by algae have been discussed. Apart from highlighting the various advantages of utilizing algal biomass for biogas production, limitations of the process such as cell wall resistivity towards digestion and inhibitions caused due to ammonia toxicity and the possible strategies for overcoming the same have been reviewed. The studies compiled in the present review indicate that if the challenges posed in translating the lab scale studies on phycoremediation and biogas production to pilot scale are overcome, algal biogas could become the sustainable and economically feasible source of renewable energy. •Comprehensive review on algal wastewater treatment, harvesting & biogas production.•Possibility of utilizing wide range of wastewaters for algae cultivation.•Anaerobic digestion: using wet algal biomass resulting in reduced processing cost.•Algal biomass pretreatment & codigestion with C rich waste to improve digestibility.•Biogas recycling to algae cultivation for CO2 utilization and biogas upgradation.