L e t 's K no w C B G Bio g a s Bio g as is an e n er g y - r i c h g a s p r o d u c e d by an a e r o b i c d e c o m pos i t i o n or th er m o c h em i c a l c on ver s i on of b i o m ass. B i o g as is c o m p o s e d m os t l y of me th a n e (CH 4 ), t he s am e c o m p ound in n a t u r al g as, a nd c a r bon d i o x ide ( C O 2 ) . The m e t h a ne c on t e n t of r aw ( u n t re a t e d) b i o g a s m a y v a r y f r om 4 % – 6 0% , w i t h C O2 m a k i n g up m ost of the r e m aind e r alo n g w i t h s m all a m ounts of w a t e r v a p or a nd o t h e r g as e s. Bio g as c an b e bu r n e d d i re c tly as a fu e l or t re a t e d t o re m o v e t he C O 2 a nd o t h e r g a s e s for use just l i k e na t u ra l g as. T re a t e d b i o g as m a y be c a ll e d r e n e w a ble na t u r al g as or b i o m e t h a n e . m anu r e , m u n i c ip a l w as t e , p l ant m a t e r ial, s e w a g e , gr e e n w a s te or f o o d w a s t e . P u r i f i c a t io n Pr o d u c t i on o f b i o g as c o u l d b e a c o n tinu o us p ro c e s s . T h e ut i lization of b i o g as as an e f fi c i e nt e n er g y so u r c e d e p e nds s t r on g ly on i t s m e t h a n e c o n ce n t r a t i o n. Th ere f o r e , b i o g as pu r ifi c a t ion i s e s s e n t ial i n o r d e r t o h a v e m o r e e n e rg y p e r un i t v o l u m e of c o m p re s s e d b i o g as and t o g e t r id o f the c o r r o s i v e e f f e c t of H 2 S. T h is c an be d o n e b y c o m p r e s sing the g as i nto the c y lind e r s, w h i c h is p o s sib l e on l y a f t e r r e mo v ing c a r bon d i o x i d e (C O 2 ) , h y d r o g e n su l f ide (H 2 S) a n d w at e r v a p o u r . B i o g as p u r i f i c a t ion in cre a s e s the c o n ce nt r a t i on o f me t hane in bio g as, in o r d e r to h a v e fu e l of h i g h e r c alo r i f i c v a lu e . T h i s c an be a c h i e v e d by d e c r e a s i ng t h e c on c e n t r a t i on of c a r b o n d i o x id e . E l i m i n a t ion of c a r bon d i o xide f r om t h e b i o g as h e lps t o in c r e a s e i t s c al o r i f i c v alue a s w e ll a s to e li m in a te t h e g r ee n h o use g as. C o m p r e s s i o n It is po s s i ble to c o m p re ss r aw bio g as, a m ix t u r e of C O 2 a nd me th a n e , b e t w e e n 1 5 - 2 5 b a r , and t r anspo r t i t in c o m p o s i te g as cy lin d e r s ( c as c a d e s ) . C o m p r e s sed Bi o g a s ( C B G ) CBG c an be p r o d u c e d f r o m w as t e , in c lud i ng m un i c ip a l solid w as t e , s lu d g e f r om w ast e w a t e r t r e a t m e nt plan t s, m ar ke t re sidu e s , a gr i c ul t u r al re sidu e s, c a tt le d u n g , su g a r c a ne p r e s s m u d , sa g o w a st e , e t c . The U nion g o v er n me n t had laun c h e d t he Su s tain a ble A l t er n a t i v e to A f f o r dab l e T r ansp o r t (S A T A T) in O c t o b e r 2 1 8 to p r om ote t he t e c hn o l o g y . T h e s c h e m e t a r g e t e d p r odu c t i o n o f 1 5 m i l l i on m e t r ic t o nn e s ( M M T ) of C BG b y 2 23 . P u b l ic s e c t o r un d er t a k i n g s o i l m a r k e ting c o m p a ni e s (OMCs ) , Ind i anO i l, B P C L , H P CL , GA I L a n d I G L ha v e p a r tn e re d w ith pot e ntial e n t r e p r e n e u r s un d e r t his in i t iat i v e t o s e t up pl a n ts and sup p ly CBG to t h e m f or sale a s au t o m oti v e a n d ind u s t r ial f u e ls.