Integrated Solar Dryer and Pyrolysis Plant to Help Transform Waste into Energy

A Solar Dryer and Pyrolysis pilot plant at Chennai will soon help smart cities to transform urban organic waste into biochar and energy.

A Solar Dryer and Pyrolysis pilot plant at Chennai will soon offer an innovative approach for smart cities to transform urban organic waste into biochar and energy. The foundation stone of the integrated project was laid by Dr. K J Sreeram, Director, CSIR– Central Leather Research Institute (CLRI), Chennai.

Solar Dryer and Pyrolysis Plant

The pilot is part of the Indo-German project ‘Pyrasol’ launched to transform urban organic waste into biochar and energy in smart cities. It was awarded to CSIR-CLRI by the Indo-German Science & Technology Centre. The project will ultimately lead to technology development for the joint processing of Fibrous Organic Waste (FOW) and Sewage Sludge (SS) of Indian smart cities into hygienic and highly valuable biochar associated with energy recovery, carbon sequestration and environmental improvement.

The Indo-German Science & Technology Centre (IGSTC) was established by the Department of Science & Technology (DST), Govt. of India & Federal Ministry of Education and Research (BMBF), Govt. of Germany to facilitate Indo-German R&D networking with emphasis on industry participation, applied research and technology development. IGSTC through its flagship program ‘2+2 Projects’, catalyses innovation-centric R&D projects by synergising the strength of research and academic institutions and public/private industries from India and Germany.

Under this program, the project titled ‘Pyrasol: Smart Cities integrated energy supply, carbon sequestration and urban organic waste treatment through combined solar sludge drying and pyrolysis’ was awarded by IGSTC to CSIR-CLRI, Chennai; Ramky Enviro Engineers, Chennai; Leibniz Universität, Hannover and BiomaconGmbH, Rehburg.

The project focuses on managing and organising the collection, treatment, and disposal systems of urban wastes in Indian Smart Cities as well as in other urban centres with an integrated and interactive approach. Through this Pyrasol project, simple and robust processing technologies for urban organic waste will be combined in a synergetic manner and further developed to improve sanitation and welfare, supply regenerative energy, convert waste into products and reduce the carbon footprint of smart cities by an innovative organic waste drying system using the solar natural chimney effect followed by a high efficient single-chamber pyrolysis.

"Want to be featured here or have news to share? Write to info[at]

Ayush Verma

Ayush is a staff writer at and writes on renewable energy with a special focus on solar and wind. Prior to this, as an engineering graduate trying to find his niche in the energy journalism segment, he worked as a correspondent for