y cling ▁industry ▁results ▁in ▁substantial ▁energy ▁reduction ▁due ▁to ▁the ▁econom ies ▁of ▁scale ▁effects ; ▁the ▁concentration ▁of ▁CO ▁is , ▁thus , ▁found ▁to ▁decl ine ▁accordingly . ▁ ▁Other ▁non - con vent ional ▁methods ▁of ▁material ▁rec y cling , ▁like ▁W aste - to - E ner gy ▁( W TE ) ▁systems , ▁have ▁gar ner ed ▁increased ▁attention ▁in ▁the ▁recent ▁past ▁due ▁to ▁the ▁polar izing ▁nature ▁of ▁their ▁em issions . ▁While ▁viewed ▁as ▁a ▁sust ain able ▁method ▁of ▁capt uring ▁energy ▁from ▁material ▁waste ▁feed stock s ▁by ▁many , ▁others ▁have ▁c ited ▁numerous ▁explan ations ▁for ▁why ▁the ▁technology ▁has ▁not ▁been ▁scale d ▁glob ally . ▁ ▁Possible ▁income ▁loss ▁and ▁social ▁costs ▁▁ ▁In ▁some ▁countries , ▁rec y cling ▁is ▁performed ▁by ▁the ▁entrepr ene ur ial ▁poor ▁such ▁as ▁the ▁kar ung ▁g uni , ▁z abb ale en , ▁the ▁rag - and - bone ▁man , ▁waste ▁pick er , ▁and ▁j unk ▁man . ▁With ▁the ▁creation ▁of ▁large ▁rec y cling ▁organizations ▁that ▁may ▁be ▁prof itable , ▁either ▁by ▁law ▁or ▁econom ies ▁of ▁scale , ▁the ▁poor ▁are ▁more ▁likely ▁to ▁be ▁driven ▁out ▁of ▁the ▁rec y cling ▁and ▁the ▁rem an ufact uring ▁market . ▁To ▁compens ate ▁for ▁this ▁loss ▁of ▁income , ▁a ▁society ▁may ▁need ▁to ▁create ▁additional ▁forms ▁of ▁soci etal ▁programs ▁to ▁help ▁support ▁the ▁poor . ▁Like ▁the ▁par able ▁of