Vivek P. Bhangea,
SPM. Prince Williamb, A.N.Vaidyab,
of Biotechnology, Priyadarshini Institute of Engineering & Technology,
Nagpur-19 (MS) INDIA.
Waste Management Division, National Environmental Engineering Research
Institute, Nehru Marg, Nagpur-20 (MS) INDIA.
Academic Editor: Dr.
Aher K. R.
includes foliage, plant residues,
fallen flowers, garden refuse, leaf litter, cut grass, residues of
pruning, weeds and other organic
matter discarded from gardens and
greeneries but exclude organic waste of the type obtained from municipal
collections. These green wastes would
land in dumping sites, or will be burned, if not collected and processed
contributing to the large scale contamination of land, water and
air. Leaves accumulating in the urban and suburban locations such as
sidewalks, lawns, and playgrounds are not only an unseemly sight but
adds to the overall problem of municipal solid waste (MSW) disposal. In
India and several other countries, foliage is often piled-up and set on
ﬁre. The resulting ash returns some of the NPK content of the foliage to
the soil but much of nitrogen, phosphorous, and organic carbon gets
lost. The burning of leaves also adds to air pollution and global
warming. Green waste when decomposes in soil may release methane and
foul odors, before getting converted into humus. However green waste can
be a potential resource for energy and other value added products, if
properly processed. The present review aims at summarizing different
processing options for green waste towards energy production and value
added product generation. Green waste is mostly dealt with aerobic
treatment (composting), anaerobic treatments, incineration, biomass
briquetting, cellulosic ethanol from biomass, biohydrogen production,