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 …

Leather protein

Researchers in the US have used a washing powder ingredient to turn waste leather into a high-value protein used in the manufacture of adhesives and packaging films. Agricultural Research Service scientists used alkaline protease to break leather shavings into low value protein hydrolysate that can be used in fertilisers. By …

Dung magic

CAN YOU imagine a self-sufficient village that meets it energy, fertiliser, pesticide and food requirements on its own? And all these from cow dung? The answer may be yes, if cow dung is used to its full potential. Its utility ranges from powering a bulb to repelling pests. It is …

Garbage power

A Japanese company has developed a system that is capable of generating almost twice as much energy from compressed pellets of pulverised household waste as all other systems currently available. The Electric Power Development (EPD) company of Japan says its experimental power plant in Kitakyushu has a generating efficiency of …

Designer fuel

SCIENTISTS all over the world are working hard to find alternative energy sources which are environment friendly. Stephen Paul of Princeton University in New Jersey, USA, is also one of them. Paul who has done research on nuclear fusion, believes that waste hydrocarbons might still be useful as vehicle fuels, …

Waste for roads

a technology has been developed in France that would help transform solid industrial wastes, including rubber and paper, into a material suitable for laying roads. Silica and aluminium, used to make glass, are found in abundance in ashes from wastes. These compounds, melted under a high-temperature plasma torch and cooled, …

Ray of hope

at the University of Zurich in Switzerland, Helmut Brandl and his colleagues of the Institute of Plant Biology have shown that the fungus, Aspergillus niger, can coax out most of the toxic metals from incinerator ash. This fungus usually produces citric acid for the foodstuff industry (New Scientist, Vol 152, …

Garbage spark off

An American company has put up a proposal to the West Bengal government for setting up a power plant in Calcutta with a capacity to generate upto 200 mw of electricity daily from garbage and municipal wastes. Calcutta city accumulates 3,000 tonnes of garbage daily and this could provide for …

Biodegradable plastic

IN THE near future, plastic won't be an environmental pejorative. The Japan Corn Starch Co Ltd, in collaboration with US business firm Grand River Technologies of Michigan, will produce a fully biodegradable plastic from corn starch that decomposes readily and can be used as compost for the corn crop (New …

Waste power

RECENT research in Indonesia has revealed that urban waste and bagasse from sugar cane can be used to generate electricity, reports Dewi Sartika for Panos Features. This would also help solve the problems of waste disposal and pollution created by sewage leakage. However, the hunt for partners for the projects …

Of algae, worms and cash flow

Microorganisms, earthworms enrich the soil Biofertilisers and earthworms are increasingly being used to replace chemical fertilizers NATURAL is better than artificial -- at least as far as agriculture is concerned. Chemical fertilisers and pesticides -- though effective to some extent -- have proved to have adverse effects in the long …

Benefitting twice over

IN TAMIL Nadu, some municipal corporations have begun to sell organic manure to farmers. This not only solves the problem of waste disposal but also supplements their budgets. In 1992-93, the Thanjavur municipal corporation sold 11,790 tonnes of organic manure for Rs 1.69 lakh. The manure consists largely of wastes …

No flush toilets

A British firm is marketing an environment-friendly, flushless toilet that doesn't require disinfectants, deodorants or sewer connections and even turns human waste into compost (New Scientist, Vol 138, No 1868). Dubbed the Clivus system, the innovative toilet has a chute beneath the pan that conveys waste downward to a polyethylene …

Skilled hands turn waste bark into art

A CONTROVERSY is raging over the chir (Pinus roxburghill trees that are being planted oin Himalayan slopes because it grows quickly in virtually ravaged soils, though local residents complain the chirs absorb groundwater and discourage undergrowth. Chir trees are found in abundance from Pakistan to Arunachal Pradesh and its logs …

Straw can generate power, if available

A 10-mw power plant based on rice straw, the first of its kind in the world, will'become operational in Jal Kheri village in Patiala district of Punjab in November this year. The plant will work on a very effective method of converting waste into electricity, according to M C Upreti …

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