A　hierarchical　polyaniline-lignin　(PANI-EHL)　composite　was　facilely　prepared　from　aniline　and　enzymatic　hydrolysis　lignin　in　an　aqueous　solution　of　ammonia.　The　morphology,　FTIR,　UV-vis　spectra,　thermogravimetric　analysis,　and　wide-angle　X-ray　diffraction　analyses　of　the　composite　were　systematically　investigated.　Furthermore,　the　sorption　property　of　the　PANI-EHL　composite　for　silver　ions　in　aqueous　solution　was　studied　via　a　static　sorption　technique.　The　result　demonstrated　that　the　PANI-EHL　composite　possessed　a　strongly　reactive　sorption　characteristic　for　silver　ions.　Serrated　silver　threads　with　length　up　to　10　mm　were　obtained　by　using　the　PANI-EHL　composite　as　a　low-cost　adsorbent.　Moreover,　the　role　of　EHL　and　polyaniline　in　the　PANI-EHL　composite　for　silver　ions　sorption　was　investigated.　The　investigation　indicated　that　the　EHL　unit　could　play　a　vital　role　in　the　chelation　of　silver　ions,　whereas　the　polyaniline　unit　played　a　leading　role　in　redox　sorption.　©　2011　American　Chemical　Society.