Pyrolysis: A Sustainable Way to Generate Energy from Waste

Abstract

Lignocellulosic biomass is a potentially more valuable renewable resource that can be utilized effusively as a chief source of heat for cooking and can correspondingly subsidize the production of electricity, heat, biofuels and chemicals including solid fuel like char or carbon. Lignocellulosic residues are mixed and burnt with coal to generate electricity. Presently, crude oil is replaced by bioethanol and biodiesel produced from biomass substrate. Some special class of chemicals can be derived from biomass that can subsequently replace the usage of non-renewable resources of oil and coal. Pyrolysis of woody biomass to obtain pyroliginous acid was started hundreds of years ago, which has versatile applications. The range of products that can be derived from biomass is huge, prompting extent of research using different types of thermal conversion technologies, including pyrolysis, gasification, torrefaction, anaerobic digestion and hydrothermal processing. This chapter provides insights about the stages of reaction during pyrolysis and the outcome of reaction conditions on the products. Technical development and adjustment of process condition can offer a suitable environmentally benign scheme to increase the energy density of the lignocellulosic residues.

Pyrolysis: An effective technique for degradation of COVID-19 medical wastes

“…The most common methods adopted in refining and upgrading the liquid fuels or bio-oils obtained from the treated medical waste by pyrolysis technique include emulsification, catalytic hydrogenation, fractional condensation and distillation. Among them, the most promising approach would be the fractionation of pyrolysis products, which efficiently separates out the liquid fuel or bio-oils and the fine chemicals ( Zaman et al, 2017 ; Erdogan, 2020 ; Fang et al, 2020 ). Separating the fractions and simultaneously continuing the condensation process has helped direct the significant recovery of liquid fuels.…”

“…The macromolecular compounds present in the CMW are thus broken down into simpler compounds like solid or liquid fuels, crude synthetic gases, and carbonaceous materials (coke, char). The solid or liquid products so formed have high commercial value and also can act as an alternative energy substitute for the existing fossil fuels, which are nowadays getting depleted ( Singh and Ruj, 2016 ; Zaman et al, 2017 ; Basu, 2018 ).…”

Recycling of Waste Plastics into Pyrolytic Fuels and Their Use in IC Engines

“…The main objective of this process is to minimize secondary cracking. Thus, the liquid yields are maximized and can go up to 75% [13].…”

“…The operating parameters and product yields for pyrolysis types [13][14][15][16]. The chemical composition of the plastic compound includes moisture, fixed carbon, volatile matter, and ash.…”

Pyrolytic Extraction and Characterization of Oil from Waste Recharge Scratch Card Papers for Industrial Application

“…The chemical constituent of biomass contains a different proportion of cellulose, hemicellulose, and lignin substrate. The biomass substrate which contains a greater proportion of lignin derivatives can yield more bio-oils yield [25].…”