Qhov sib txawv tseem ceeb ntawm biogas thiab biomethane yog biogas tsim los ntawm kev zom zaub mov anaerobic los ntawm cov kab mob thiab yog cov sib xyaw ntawm methane thiab carbon dioxide, thaum biomethane tsim los ntawm fermentation ntawm cov organic teeb meem thiab muaj txog 90% methane thiab lwm yam khoom.
Hauv luv luv, biogas thiab biomethane yog cov khoom kawg ntawm kev zom zaub mov anaerobic ntawm cov organic. Biomethane yog ib hom biogas.
Biogas yog dab tsi?
Biogas yog qhov sib xyaw ntawm cov pa roj uas muaj methane thiab carbon dioxide. Cov roj no yog tsim los ntawm cov khoom siv raw xws li cov khib nyiab ua liaj ua teb, cov quav, cov khib nyiab hauv nroog, cov khoom siv cog qoob loo, cov dej phwj tuaj, cov khib nyiab ntsuab thiab cov khoom pov tseg. Biogas yog lub zog tauj dua tshiab. Feem ntau, biogas yog tsim los ntawm anaerobic digestion nrog cov kab mob anaerobic. Qee zaum, anaerobic digestion tshwm sim nrog methanogen nyob rau hauv lub anaerobic digester, biodigester lossis bioreactor.
Feem ntau, biogas muaj methane, carbon dioxide, thiab me me ntawm hydrogen sulfide, noo noo, thiab siloxane. Ntawm cov pa roj no, methane, hydrogen, thiab carbon monoxide tuaj yeem raug combusted los yog oxidized nyob rau hauv lub xub ntiag ntawm oxygen. Qhov no combustion tso tawm lub zog, cia cov biogas yuav pab tau raws li ib tug roj. Peb tuaj yeem siv nws rau roj hlwb thiab tseem siv rau cua sov, uas suav nrog kev ua noj. Tsis tas li ntawd, nws muaj txiaj ntsig zoo hauv cov roj cav los hloov lub zog rau hauv hluav taws xob thiab cua sov.
Feem ntau, biogas ua compressible tom qab tshem cov pa roj carbon dioxide, zoo ib yam li compression ntawm natural gas rau hauv CNG. Peb tuaj yeem siv cov roj compressed no hauv cov tsheb tsav. Raws li European kev tshawb fawb, biogas tuaj yeem hloov tau li ntawm 17% ntawm cov tsheb yuav tsum tau siv roj.
Biogas ntau lawm suav nrog cov kab mob, suav nrog methanogens thiab sulfate-txo cov kab mob uas tuaj yeem ua pa anaerobic. Tsis tas li ntawd, biogas tuaj yeem xa mus rau cov roj uas tsim los yog kev lag luam. Lawm, methane tsim nyob rau hauv ib puag ncig anaerobic los ntawm methanogens thiab hauv aerobic zones los ntawm methanotrophs. Hauv cov chaw tsim khoom biogas, cov chaw tsim khoom siv cov khoom siv anaerobic uas tuaj yeem kho cov khoom pov tseg thiab cov qoob loo zog.
YBiomethane yog dab tsi?
Biomethane yog cov roj methane uas tsim los ntawm fermentation ntawm cov organic teeb meem. Nws tseem yog lub npe hu ua renewable natural gas los yog sustainable natural gas. Nws yog ib hom biogas muaj qhov zoo uas zoo ib yam li fossil natural gas. Biomethane muaj txog 90% methane lossis ntau dua. Txhim kho qhov zoo ntawm cov roj no tso cai rau qhov muaj peev xwm faib cov roj ntawm cov kab hluav taws xob uas twb muaj lawm hauv cov khoom siv uas twb muaj lawm.
Muaj ntau txoj hauv kev sib txawv ntawm cov pa roj carbon dioxide lossis carbon monoxide thiab hydrogen, uas suav nrog bio methanation, Sabatier txheej txheem thiab qee cov txheej txheem electrochemical. Cov txheej txheem ntau lawm muab txog 70% efficiency thaum siv rau biomass. Peb tuaj yeem txo tus nqi ntawm kev tsim khoom los ntawm kev ua kom tiav qhov ntau lawm thiab los ntawm qhov chaw ntawm cov nroj tsuag anaerobic digestion uas nyob ze ntawm kev thauj mus los rau cov chaw ntawm biomass. Muaj peb txoj haujlwm tseem ceeb uas peb tuaj yeem siv los ua biomethane suav nrog, kev zom zaub mov anaerobic ntawm cov khoom siv organic, kev tsim tawm ntawm Sabatier cov tshuaj tiv thaiv, thiab thermal gasification ntawm cov khoom siv organic.
Txawm li cas los xij, biomethane tuaj yeem ua rau tsim cov pa phem ib puag ncig xws li carbon monoxide, sulfur dioxide, nitrogen oxide, hydrogen sulfide, thiab particulates. Tsis tas li ntawd, kev khiav tawm ntawm cov methane tsis tawg tuaj yeem ua rau lub tsev cog qoob loo.
Qhov txawv ntawm Biogas thiab Biomethane yog dab tsi?
Biogas thiab biomethane yog cov khoom kawg ntawm kev zom zaub mov anaerobic ntawm cov khoom organic. Biomethane yog ib hom biogas. Qhov sib txawv tseem ceeb ntawm biogas thiab biomethane yog biogas tsim los ntawm kev zom zaub mov los ntawm cov kab mob thiab nws yog kev sib xyaw ntawm methane thiab carbon dioxide, thaum biomethane tsim los ntawm fermentation ntawm cov organic teeb meem thiab muaj txog 90% methane thiab lwm yam khoom.
Cov hauv qab no infographic teev qhov sib txawv ntawm biogas thiab biomethane hauv daim ntawv tabular rau ib sab sib piv
Summary – Biogas vs Biomethane
Biogas thiab biomethane yog cov khoom kawg ntawm kev zom zaub mov anaerobic ntawm cov khoom organic. Biomethane yog ib hom biogas. Qhov sib txawv tseem ceeb ntawm biogas thiab biomethane yog cov ntaub ntawv biogas los ntawm kev zom zaub mov los ntawm cov kab mob, thiab nws yog kev sib xyaw ntawm methane thiab carbon dioxide, thaum biomethane tsim los ntawm fermentation ntawm cov organic teeb meem thiab nws muaj txog 90% methane thiab lwm yam khoom.
