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Review Article Open Access
Due to the aggravating problem of solid waste disposal and rising demand of fuels for energy generation, pyrolysis can serve as a promising solution to both these challenges. The majority of the municipal solid wastes are constituted of biomass and plastics. While disposal and recycling of rubber wastes is also an emerging issue for waste management, electronic wastes are also posing a great danger to the ecosystems. Pyrolysis can be universally applied to all these type of wastes to obtain non-condensable fuel gases, pyrolysis oils and solid coke achieving complete waste disposal. In the present study, a review of pyrolysis with respect to various types of waste feedstock is presented. The interactions of the various types of waste feeds during co-pyrolysis were also reviewed. The applications of the products obtained as well as their further upgrading is also discussed. The presence of catalyst, reaction conditions, and heating rate as well as the type of reactor, influence the yield as well as the composition of the products to a great extent. Pyrolysis of single feed as well as co-pyrolysis is also reviewed. Some co-pyrolysis studies reported better results than single feed pyrolysis owing to the synergistic interactions between waste feeds. This paper provides an overall outlook of the current scenario of the pyrolysis techniques for solid waste management.
Pyrolysis, Co-pyrolysis, Solid waste management, Pyrolysis oil, Non-volatile gases, Char, Waste management