The　electrochemically　reductive　dechlorination　of　2,4-dichlorophenol　(2,4-DCP)　in　aqueous　solution　on　palladium/polymeric　pyrrole-sodium　dodecyl　sulfonate　film/meshed　titanium　electrode　(Pd/PPy-SLS/Ti　electrode)　was　investigated　in　this　paper.　The　Pd/PPy-SLS/Ti　electrode　was　prepared　by　electrodesposition　and　characterized　in　terms　of　surface　morphology　(SEM),　structural　feature　(XRD),　specific　surface　area　(BET)　and　Pd　loading　level　(ICP-AES).　Effects　of　the　dechlorination　current　and　the　initial　pH　value　of　the　solution　on　the　removal　efficiency　and　the　current　efficiency　were　studied　in　the　2,4-DCP　dechlorination　process　on　Pd/PPy-SLS/Ti　electrode.　Effective　removal　of　2,4-DCP　was　achieved　with　removal　efficiency　of　100%　and　current　efficiency　of　33.9%　in　the　presence　of　100　mg　L-1　2,4-DCP　under　the　conditions　of　initial　pH　of　2.36,　dechlorination　current　of　5　mA　and　dechlorination　time　of　70　min.　The　intermediate　products　were　2-chlorophenol　(2-CP)　and　4-chlorophenol　(4-CP).　The　final　products　were　mainly　phenol.　Its　further　reduction　product　cyclohexanone　was　also　detected.　The　stability　of　the　electrode　was　good　that　the　dechlorination　efficiency　was　maintained　at　100%　after　having　been　reused　8　times.　The　stable　electrode　demonstrated　a　promising　application　prospect　in　dechlorination　process　with　high　effectiveness　and　low　cost.　(C)　2012　Elsevier　B.V.　All　rights　reserved.