Simultaneous treatment of PVC and oyster-shell wastes by mechanochemical means

W. Tongamp, J. Kano, Q. Zhang, F. Saito

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


This work presents a new process for dechlorinating poly-vinyl chloride (PVC) by the use of oyster-shell waste. The process consists of milling of PVC waste with oyster-shell waste, followed by washing the milled sample with water. The milling of PVC and oyster-shell mixture results in size reduction and rupture in bonds, leading to mechanically induced reactions between the two to form CaCl2 and hydrocarbon with C{double bond, long}C bonds. Washing the milled mixtures with water at room temperature allows complete removal of chlorine from the milled sample. More than 95% of chlorine in PVC was removed when 2 h grinding is conducted for the mixture. The present process could offer a potential route to the handling and disposal of oyster-shell and PVC wastes.

Original languageEnglish
Pages (from-to)484-488
Number of pages5
JournalWaste Management
Issue number3
Publication statusPublished - 2008


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