Impact Factor (2025): 6.9
DOI Prefix: 10.47001/IRJIET
A review
was conducted on gasification for municipal solid waste and sewage waste. In
gasification there are upstream process and downstream process are there.
Upstream process consists of size reduction, drying and densification.
Downstream process includes gas cleaning and gas utilization process.
Gasification process is conversion process of solid and combustible fuel into
gas mixtures is known as producer gas. That producer gas will go for downstream
process. The main components of the producer gas were carbon monoxide and
hydrogen including a small amount of methane and light hydrocarbons. The
producer gas or syngas can be used as a biofuel, electricity, biogas etc. It
will replace the abundant use of fossil fuels like petrol, diesel, naphtha oil,
etc. In gasification process some other by products also obtained they are ash
and tar. The generated tar is gravimetric tar, which is total tar. As light
tars, benzene (light aromatic tar) was a major light tar. Naphthalene, anthracene,
and pyrene (light polycyclic aromatic hydrocarbon tars) were also generated,
but in relatively small amounts. Ammonia and hydrogen cyanide (precursor for
NOx) were generated from thermal decomposition of tar containing protein and
nitrogen in sewage sludge. The ash can used as food products for plants
(fertilizer). Utilizing the sewage sludge as an energy source would generate
large fossil fuels, neutralize sewage sludge landfills and reduce the risk of
developing and spreading the disease due to the presence of harmful substances.
Country : India
IRJIET, Volume 6, Issue 5, May 2022 pp. 86-91