The　synthesis　of　hyper-cross-linked　polymers　(HCPs)　is　typically　achieved　using　costly　reagents.　This　study　demonstrates　the　utilization　of　a　plastic　waste,　Styrofoam,　to　create　a　series　of　HCPs　through　a　one-pot　Friedel-Crafts　reaction.　The　influence　of　substrate,　catalyst,　and　cross-linker　ratio　was　investigated　to　yield　HCPs　with　Brunauer-Emmett-Teller　(BET)　surface　areas　up　to　1199　m(2)/g.　We　exploited　this　recyclate　HCP　for　carbon　capture　from　flue　gas,　dye　removal,　and　As(V)　sequestration　from　water.　The　adsorption　capabilities　of　this　cost-effective　adsorbent　were　comparable　to　and　surpassed　current　state-of-the-art　nanoporous　materials　such　as　metal-organic　frameworks　(MOFs),　activated　carbon,　zeolites,　and　other　HCPs.