Waste Conversion

Order of the National Green Tribunal regarding encroachment of 6 ponds in village Mundka, Delhi, 02/12/2024

Order of the National Green Tribunal in the matter of Dr. Jeet Singh Yadav Vs Govt. of NCT of Delhi & Others dated 02/12/2024. The matter related to restoration of 6 ponds in Delhi which have been occupied unauthorizedly or otherwise filled in by raising constructions. In the order dated …

Don t junk it

a recent development can revolutionise the concept of waste management. Alka Umesh Zadgaonkar, head of the department of applied chemistry at the Nagpur-based G H Raisoni College of Engineering, has demonstrated how plastic waste can be converted to diesel, gasoline and lubricant oil. V A Juvekar of the department of …

Cutting out waste

The Hindustan Aeronautics Limited (hal) has recently initiated ecofriendly pilot projects at its Bangalore aircraft division, which will not only minimise waste, but will also help save huge sums of money. The projects include installation of a biogas plant and harvesting rainwater. The biogas plant, which is being set up …

Is it all grey?

Every year Indian thermal power plants (TPPs) spew out 100 million tonnes of flyash, a grey outpour soon expected to reach 175 million tonnes. According to current estimates nearly one lakh hectares (ha) of land in India is taken up by ash ponds. Bad news for the environment. For, most …

Waste by any other name...

An official of the state government was explaining, at a meeting, the progress made to set up sewage treatment plants, drains and diversionary sewers in pursuit of a Supreme Court order to clean up the Yamuna river in the northern end of Delhi city. A number of planned activities were …

Dry clean

Bangalore-based non-governmental organisation acts ( Agriculture, Crafts, Trades and Studies), with help from the Swiss agency deza ( Direktion F

No fowl play

imagine replacing silicon with materials generated from waste chicken feathers to make microchips. Think it is impossible? No says Richard Wool. He and his colleagues from the Newark-based University of Delaware have developed chips of computer processors made from chicken feathers. The chip consists of soybean resin and feathers crafted …

Attractive alloy

a new process, devised by researchers at the us department of energy has made it commercially viable to recover a valuable rare-earth element from tons of stockpiled magnetic scrap. They have refined high-energy neodymium-iron-boron magnets, which are used extensively in automotive, consumer electronics and biomedical applications. The superior performance of …

No space for garbage

Adequate locations to set up new garbage dumping sites are not available in Mumbai. The Brihan-Mumbai Municipal Corporation (bmc) has been recently ordered by the Union government to create new garbage dumps within the city limits, as all the bmc dumping grounds have exceeded their capacity. But bmc is finding …

What a waste

there is growing concern over the new wave of waste-to-energy technology being adopted by the Union ministry for non-conventional energy sources ( mnes ). In this technology, waste is burnt at very high temperatures to produce energy. Health experts, however, warn that the burning of waste could lead to the …

Waste not, want not

guwahati is all set to get a clean image with the launch of two ambitious projects that will gradually rid the city of garbage. Under the new schemes, waste collected from the city will be used to produce bio-fertiliser and electricity in two separate ventures. Guwahati-based North East Green Tech …

Madurai clean up

new and more effective methods are to be adopted for waste disposal in Madurai. According to Madurai corporation commissioner Gagandeep Singh Bedi, the corporation has decided to gradually phase out the use of bullock carts to transport solid waste from the city. There are also plans to involve private operators …

Opportunity waste...

waste can actually be wealth that is misplaced

Garbage power

India will soon have its first-ever power plant using solid waste as fuel in Perungudi town in Tamil Nadu. The Rs 15-crore plant will require 800 tonnes of solid garbage every day to produce power at full capacity (15 megawatt). The plant's operation is not expected to have any adverse …

Straw wealth

with the development of a new process, straw will be used to make substances that will result in a variety of fuels, chemicals, fertilisers and glues. This would be of immense benefit to the industries based on horticulture and agriculture as it would provide a sustainable way of not only …

Space wonder

Power for spaceships from astronaut waste? Unbelievable but true. It won't be long before astronauts make a significant contribution towards replenishing depleted power sources on board a spacecraft: faeces and other solid wastes. Scientists from National Aeronautics and Space Administration (nasa) in the US have enlisted the support of Advanced …

Computer for roads

Obsolete computers are posing an environmental problem in developed countries, specially the US. With faster and better machines being available almost every year, the number of old computers and peripherals being discarded are generating a lot of trash. Now Coniglairo Industries, a company based in Massachusetts, has developed a lightweight, …

Wealth in waste

the municipal corporation of Delhi's satellite city Faridabad embarked on a project that may well be one of the first of its kind in the country. The corporation has privatised collection and disposal of garbage, which will be converted into dry compost. About 6.5 hectares of land has been allotted …

Treating distillery wastes

Scientists at the Nimbkar Agriculture Research Institute at Phaltan in Maharashtra have developed a method to treat foul-smelling distillery wastes. What is distinctive is that they will be using solar energy and a chemical catalyst, which they have refused to name. Laboratary tests have shown that the method can detoxify …

Lead ing to disaster

in india, around 60,000 metric tonnes of lead from batteries are recycled illegally. Needless to say, they are done in smelting units situated in the backyards of residential areas. In 1994, the Central Pollution Control Board (cpcb) closed 110 such polluting backyard smelters in Delhi. Studies have revealed that their …

Money from garbage

the Municipal Corporation of Dehi ( mcd ) has finally found a productive way of getting rid of the city's garbage. In a month's time, the first private-run compost plant is likely to begin operations. The plant, which has a capacity of converting 500 metric tonnes of garbage into manure …

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