▁to ▁the ▁political ▁establishment . ▁ ▁This ▁potential ▁syn er gy ▁with ▁the ▁c ement ▁industry ▁also ▁provides ▁environmental ▁benefits ▁by ▁simultaneously ▁reducing ▁the ▁waste ▁output ▁of ▁the ▁looping ▁process ▁and ▁dec ar bon izing ▁c ement ▁production . ▁ ▁C ement ▁manufact ure ▁is ▁energy ▁and ▁resource ▁int ensive , ▁cons uming ▁ 1 . 5 ▁t onnes ▁of ▁material ▁per ▁t onne ▁of ▁c ement ▁produced . ▁In ▁the ▁developing ▁world , ▁economic ▁growth ▁will ▁drive ▁infrastr ucture ▁growth , ▁increasing ▁c ement ▁demand . ▁Dep loy ing ▁a ▁waste ▁product ▁for ▁c ement ▁production ▁could ▁therefore ▁have ▁a ▁large , ▁positive ▁environmental ▁impact . ▁ ▁Environment al ▁imp lications ▁The ▁starting ▁material ▁for ▁calci um ▁looping ▁is ▁lim estone , ▁which ▁is ▁environment ally ▁ben ign ▁and ▁widely ▁available , ▁account ing ▁for ▁over ▁ 1 0 % ▁( by ▁volume ) ▁of ▁all ▁sed iment ary ▁rock . ▁Lim estone ▁is ▁already ▁m ined ▁and ▁cheap ly ▁obtain able . ▁The ▁min ing ▁process ▁has ▁no ▁major ▁known ▁ad verse ▁environmental ▁effects , ▁beyond ▁the ▁un av oid able ▁intr us iveness ▁of ▁any ▁min ing ▁operation . ▁However , ▁as ▁the ▁following ▁calculation ▁shows , ▁despite ▁integration ▁with ▁c ement ▁industry , ▁waste ▁from ▁Ca - loop ing ▁can ▁still ▁be ▁a ▁problem . ▁ ▁From ▁the ▁environmental ▁and ▁health ▁stand point , ▁Ca - loop ing ▁comp ares ▁favor ably ▁with ▁am ine ▁scr ub bing . ▁Am ine ▁scr ub bing ▁is ▁known ▁to ▁generate ▁air