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Management of plastic waste
A MARVEL of polymer chemistry, plastics have become an
indispensable part of our daily life. But repeated reprocessing
of plastic waste, and its disposal cause environmental problems,
pose health hazards, in addition to being a public nuisance.
The importance of this sector to the national economy can be
gauged from the fact that the domestic demand is expected to
cross 4 million tonnes by 2001-2002, confirming plastics as the
material of choice in numerous applications due to depletion of
already scarce natural resources. Packaging is the major
application, accounting for nearly 52 per cent of plastic
consumption.
Over the years a countrywide network for collection of plastic
waste through rag-pickers, waste collectors, waste dealers and
recycling enterprises, consisting of over 20,000 units, has
sprung up. In 1998 around 800,000 tonnes representing 60 per cent
of plastic wastes generated in the country was recycled involving
2,000 units. This level of recycling is the highest in the world.
The corresponding figure for Europe is 7 per cent, Japan 12 per
cent, China 10 per cent, and South Africa 16 per cent. By 2002
around 2 million tonnes of waste will go in for recycling
(Central Pollution Control Board figures - 1998).
The balance unutilised waste remains uncollected lying strewn on
the ground, littered in open drains or in garbage dumps, often
resulting in chokage of municipal sewers and storm water drains.
It should be remembered that collection of plastic waste is a
source of livelihood for innumerable "rag-pickers'', or waste
collectors. Plastic waste collection is a lucrative business when
compared with that of other items. A typical kabadiwala displays
the following rates:
Plastic waste commands the highest rate in the recycled market.
Environmental Issues
The disposables which generate waste and cause environmental
problems when their useful life ends, include mainly the
following:
Plastic packaging/carrybags/bottles/containers/trash bags
Plastics from health and medicare
Plastics from hotels and catering industry
Plastics from air, rail and road travel
Polythene carrybags have environmental implications from cradle
to grave. While carrybags made from virgin plastics are accepted
as user-friendly, the problem arises when plastics are recycled
for repeated use. The basic question is whether polythene bags
should at all be manufactured using recycled materials, and if so
what grade - first, second, third and so on. For consumer
acceptance, recycled material of the first grade should be used.
In respect of other cases when second grade material is used,
they will find greater acceptance by blending virgin and recycled
plastics in a 50 : 50 ratio. Carrybags manufactured using third
and lower grade recycled materials are unacceptable and are the
main environmental culprits. An interesting economic fact is that
recycled polythene bags are generally priced between Rs. 45 and
50 per kg, while bags made out of virgin plastics command a price
of around Rs. 80 per kg.
In respect of health and medicare items, though there is the
possibility of organised picking around hospitals and garbage
dumps, stringent environmental legislation for management of bio-
medical wastes, including plastic waste, is in place.
Until recently no legislation was framed to deal specifically
with issues connected with plastic waste management. The
Government of Himachal Pradesh was one of the earliest to
introduce legislation prohibiting the throwing or disposing of
plastic articles in public places. The Union Ministry of
Environment and Forests has recently notified the "Recycled
Plastic Manufacture and Usage Rules, 1999''. These rules require
that carrybags or containers used for purposes of storing shall
be made of virgin plastic and be in natural shade or white. These
items when made of recycled plastic, and used for purposes other
than storing and packaging of foodstuffs shall use pigments and
colourants as per Indian Standards. Recycling of plastics shall
also be undertaken strictly in accordance with specifications
prescribed by the Bureau of Indian Standards, and shall carry a
mark that the product is manufactured out of recycled plastic.
The thickness of carrybags shall not be less than 20 microns.
Finally and most importantly, Rule 4 prohibits all vendors from
using carrybags or containers made out of recycled plastics for
storing, carrying, dispensing or packaging of foodstuffs. In
other words all vendors are required to use carrybags and
containers manufactured to specifications prescribed in the 1999
Rules.
In July 2001 a committee was constituted under the chairmanship
of Mr. Justice Ranganath Mishra, former Chief Justice of India,
to examine among others "various environmental issues relating to
indiscriminate littering of plastic wastes with particular
reference to disposal.'' The report of the committee is
awaited.
The issue
The issue boils down to management of plastic waste, and more
precisely carrybags and containers made out of recycled plastic
waste material. It is said that any strategy for effective
management of plastic wastes should have three R's - reduction,
reuse, and recycle, and include a package of prevention,
promotion, and mitigation measures.
The practice of a closed environmental loop is a fact in many
developed countries. Packaging is found wherever products are
sold, be they foodstuffs or consumer goods. Recycling capacities,
catering for plastic packaging of sweet wrappers to 10-litre
mayonnaise buckets, are available with suitable processes for
each type of packaging requirement. The recycling follows sound
ecological routes which meet all statutory provisions and, at the
same time remain within reasonable financial limits.
In Agenda 21 of the U.N. Conference in Rio in 1992, recycling has
been assigned a position as important as conservation of natural
resources and saving energy. The more that is recycled, the
longer will natural resources be available for future
generations. Eco-efficiency is a continuous challenge involving
search for new techniques which combine resource conservation,
energy saving, and economic viability.
The way forward
Recycling of plastic waste is a major activity in India through
which thousands of families earn a livelihood. Any decision to
suddenly restrict this sector will have serious economic and
social repercussions. At the same time the environmental issues
involved need to be addressed. The challenge for environmental
administrators lies in reconciling these two aspects.
It would be of interest to know that nearly two dozen pieces of
environmental legislation with rigorous penalties for default,
covering different aspects including management of hazardous
wastes, have been in place for nearly two decades. Incidentally,
plastic waste has not been classified as a hazardous substance.
The legislation dealing with plastic waste is the latest entrant
in the long list, and yet it appears to have caught the fancy of
the regulators, and is receiving more attention than it deserves.
It will also help if a holistic view of environmental management
is taken in which the disposal of non-complying plastic carrybags
and containers is seen in the context of scores of major
industrial units discharging untreated toxic effluents which are
known to foul up land and water sources thus posing a more
serious threat to human health and life. A right perspective will
then definitely emerge out of which appropriate decisions can be
taken. Or else it will be a case of the tail wagging the
proverbial environmental dog.
A blanket ban on the use of non-conforming plastic carrybags and
containers will of course be in order and within the 1999 Rules.
So will be any order closing down non-complying manufacturing
units. It is nobody's case that non-compliance with law should be
tolerated. But enlightened administration calls for perceptive
handling of an issue involving the lives of thousands of small
manufacturers and even more handicapped people down the line. The
choice of closure as a strategy of first resort instead of the
last option will only drive the affected into deprivation.
The answer lies in engaging in discussion all those who are
involved - manufacturers, stakeholders, users and the like - and
evolve a practical programme of mitigating the evil, either by
assisting and enabling the manufacturers to upgrade their
processes, or phase out while developing alternative sources of
livelihood. The possibility of introducing bio-degradable
technologies which are supposedly available in some parts of the
country is worth pursuing. These initiatives require a commitment
for proactive action totally different from a mindless
implementation of rules. The stakes for our country in the
plastic industry are very high. The attempt to clean up one
segment should not result in throwing the "baby out of the window
along with the bath water."
P. M. BELLIAPPA
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