When plas­tic aids in solid waste dis­posal

Pla­s­tone is a com­bi­na­tion of plas­tic waste and other ma­te­ri­als

The Hindu - - CHENNAI - S. An­na­malai

Dis­posal of build­ing de­bris, lime­stone, fly ash, ce­ment bags and crushed metal wires has al­ways posed a prob­lem for big in­dus­tries. Iron­i­cally, plas­tic waste is be­ing used to fa­cil­i­tate their easy dis­posal.

The waste ma­te­ri­als are mixed with plas­tic waste to make sturdy blocks that have var­i­ous ap­pli­ca­tions. Pla­s­tone is the name given by the Cen­tre for Stud­ies on Solid Waste Man­age­ment at Thi­a­gara­jar Col­lege of Engi­neer­ing (TCE), Madu­rai, to the ‘syn­thetic gran­ite’ de­vel­oped by it as an extension of road con­struc­tion tech­nol­ogy using plas­tic waste.

Ideal for con­struc­tion

Pla­s­tone fa­cil­i­tates waste dis­posal and is also ideal for low-cost con­struc­tion, es­pe­cially of toi­lets. R. Va­sude­van, Dean, TCE and a Padma Shri awardee, said that it was their con­tri­bu­tion to the Swachh Bharat Mis­sion. The cost of a toi­let fab­ri­cated by the CSSWM with pla­s­tone is much lower than one con­structed with con­ven­tional ma­te­ri­als. One such toi­let con­sumes 245 kg of plas­tic waste and costs ₹9,000.

With the tech­nol­ogy be­ing shared by TCE, com­pa­nies like GHCL, Sun­daram Brake Lin­ings, Unilever In­dus­tries and Hin­dalco have come for­ward to use pla­s­tone for solid waste dis­posal, said Dr. Va­sude­van.

Dis­pos­able cups, bags, bot­tles, con­tain­ers and pack­ing ma­te­ri­als are shred­ded and added to solid ag­gre­gate, which can be ce­ramic, stone or metal pieces. The hot blend is moulded into the re­quired size and shape. Rub­ber or poly­mer coat­ing gives pla­s­tone a sheen.


Sturdy blocks: Pla­s­tone sam­ples made with plas­tic and solid waste in Madu­rai.

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