Dr. Arun Kumar is currently working in the field of microalgae and their applications in bioremediation and sustainable environment. Dr. Kumar has published various research and review papers in reputed journals like Frontiers in Microbiology, Frontiers in Biosciences and Environment and Sustainability Indicators in the area of microalgal bioremediation, biofuels and bioproducts production from microalgae. He also published an international book Microalgae in Wastewater Remediation from CRC Press, Taylor & Francis Group. He obtained his doctoral degree in environmental microbiology from Babasaheb Bhimrao Ambedkar University, Lucknow, India. In his doctoral work, Dr. Kumar successfully metabolized a widely used and hazardous insecticide Chlorpyrifos by cyanobacterial strain Oscillatoria sp. CYA8 CPF isolated from paddy fields. Dr. Sandhya Prajapati is currently working in the field of Solar photovoltaic applications. Dr. Prajapati has published various research papers "Energy Sources part A: Recovery, Utilization and Environmental Effects," International Journal of Renewable Energy Technology (Inderscience) and International Journal of Sustainable Engineering in load management, capacity credit and electric vehicle charging strategies. He obtained his doctoral degree in electrical engineering from Indian Institute of Technology, Roorkee, India. In his doctoral work, Dr. Prajapati successfully studied utilization of solar energy in various fields, especially in greywater recycling.

• 1. Introduction. 2. Wastewater Treatment: on-site systems. 3. Wastewater treatment: Decentralized systems. 4. Energy problems in wastewater recycling. 5. Solar powered wastewater recycling (SPWR). 6. SPWR for municipal wastewater. 7. SPWR for blackwater. 8. SPWR for industrial wastewater. 9. Policies and regulations. 10. Opportunities.

Dr. Arun Kumar is currently working in the field of microalgae and their applications in bioremediation and sustainable environment. Dr. Kumar has published various research and review papers in reputed journals like Frontiers in Microbiology, Frontiers in Biosciences and Environment and Sustainability Indicators in the area of microalgal bioremediation, biofuels and bioproducts production from microalgae. He also published an international book Microalgae in Wastewater Remediation from CRC Press, Taylor & Francis Group. He obtained his doctoral degree in environmental microbiology from Babasaheb Bhimrao Ambedkar University, Lucknow, India. In his doctoral work, Dr. Kumar successfully metabolized a widely used and hazardous insecticide Chlorpyrifos by cyanobacterial strain Oscillatoria sp. CYA8 CPF isolated from paddy fields. Dr. Sandhya Prajapati is currently working in the field of Solar photovoltaic applications. Dr. Prajapati has published various research papers "Energy Sources part A: Recovery, Utilization and Environmental Effects," International Journal of Renewable Energy Technology (Inderscience) and International Journal of Sustainable Engineering in load management, capacity credit and electric vehicle charging strategies. He obtained his doctoral degree in electrical engineering from Indian Institute of Technology, Roorkee, India. In his doctoral work, Dr. Prajapati successfully studied utilization of solar energy in various fields, especially in greywater recycling.

• 1. Introduction. 2. Wastewater Treatment: on-site systems. 3. Wastewater treatment: Decentralized systems. 4. Energy problems in wastewater recycling. 5. Solar powered wastewater recycling (SPWR). 6. SPWR for municipal wastewater. 7. SPWR for blackwater. 8. SPWR for industrial wastewater. 9. Policies and regulations. 10. Opportunities.

Dr. Arun Kumar is currently working in the field of microalgae and their applications in bioremediation and sustainable environment. Dr. Kumar has published various research and review papers in reputed journals like Frontiers in Microbiology, Frontiers in Biosciences and Environment and Sustainability Indicators in the area of microalgal bioremediation, biofuels and bioproducts production from microalgae. He also published an international book Microalgae in Wastewater Remediation from CRC Press, Taylor & Francis Group. He obtained his doctoral degree in environmental microbiology from Babasaheb Bhimrao Ambedkar University, Lucknow, India. In his doctoral work, Dr. Kumar successfully metabolized a widely used and hazardous insecticide Chlorpyrifos by cyanobacterial strain Oscillatoria sp. CYA8 CPF isolated from paddy fields. Dr. Sandhya Prajapati is currently working in the field of Solar photovoltaic applications. Dr. Prajapati has published various research papers "Energy Sources part A: Recovery, Utilization and Environmental Effects," International Journal of Renewable Energy Technology (Inderscience) and International Journal of Sustainable Engineering in load management, capacity credit and electric vehicle charging strategies. He obtained his doctoral degree in electrical engineering from Indian Institute of Technology, Roorkee, India. In his doctoral work, Dr. Prajapati successfully studied utilization of solar energy in various fields, especially in greywater recycling.

• 1. Introduction. 2. Wastewater Treatment: on-site systems. 3. Wastewater treatment: Decentralized systems. 4. Energy problems in wastewater recycling. 5. Solar powered wastewater recycling (SPWR). 6. SPWR for municipal wastewater. 7. SPWR for blackwater. 8. SPWR for industrial wastewater. 9. Policies and regulations. 10. Opportunities.