Posts tagged ‘Thiagarajar College of Engineering’

11/07/2014

India’s ‘Plastic Man’ Chemist Turns Litter Into Paved Roads – Businessweek

For as far as the eye can see, there’s stinking, smoking, untreated garbage. It’s concentrated in the municipal dump, in the South Indian city of Madurai, but not contained by it. The surrounding fields are also piled with trash. Stray dogs nibble at mounds of rotting food. The trees are denuded and covered with shredded plastic, the blue and pink and yellow bags like some kind of sinister confetti.

India's 'Plastic Man' Turns Litter Into Paved Roads

The road to the dump, and beyond it to Madurai’s airport, is like a Hollywood vision of dystopian ruin: lifeless, black, choked with human refuse. And that’s why Rajagopalan Vasudevan’s enthusiasm is so jarring. As he makes his way through the rubbish, he’s like a child on a treasure hunt. “Wonderful resource,” he says, admiring a jumble of plastic bags, jerrycans, and torn food packets. “With all this plastic, I could lay the whole road to the airport.”

It is difficult to exaggerate India’s garbage problem. Jairam Ramesh, the nation’s former environment minister, has said that if there were a “Nobel prize for dirt and filth,” India would win it. As much as 40 percent of the country’s municipal waste remains uncollected, according to the Organisation for Economic Co-operation and Development. Of the waste that is collected, almost none is recycled. Most of it sits in open dumps such as the one in Madurai, leaching into the soil and contaminating groundwater. Some of it is burned, releasing dioxins and other toxic chemicals into the air.

Much of India’s garbage is made up of plastic—a scourge of the nation’s new consumer economy. The country’s Central Pollution Control Board says more than 15,000 tons of plastic waste are generated daily. Although the nation’s per capita consumption of plastic is low compared with that of the U.S., it’s expected to double over the next five years as India continues to develop. This poses huge environmental, social, and economic challenges. As the Supreme Court of India recently observed: “We are sitting on a plastic time bomb.”

Vasudevan sees an opportunity. A professor of chemistry at Thiagarajar College of Engineering, near Madurai, he insists that plastic gets a bad rap. Rather than an incipient environmental calamity, plastic, in Vasudevan’s opinion, is a “gift from the gods”; it’s up to humans to use it wisely. And he’s devised a way to transform common plastic litter—not only thicker acrylics and bottles but also grocery bags and wrappers—into a partial substitute for bitumen in asphalt.

In recent years his method has been gaining recognition. He’s become known as Plastic Man and travels throughout India instructing engineers how to apply it. The college holds a patent for his technique but often licenses it for free. To date, more than 5,000 kilometers (3,000 miles) of plastic roads have been laid in at least 11 states. The Central Pollution Control Board and the Indian Roads Congress, two leading government bodies, have endorsed the method.

via India’s ‘Plastic Man’ Chemist Turns Litter Into Paved Roads – Businessweek.

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