Ek het pas die geleentheid gehad om Denemarke in die middel van Augustus te besoek as deel van \u2019n Suid-Afrikaanse uitreik om Denemarke se benadering tot die ontwikkeling van groen-waterstof en hernubare energie te ondersoek.<\/p>\n\n\n\n
Jy mag dalk vra wat is groen-waterstof en hoekom is dit belangrik?<\/p>\n\n\n\n
Waterstof is een van die mees algemene stowwe in die heelal. Dit is ook \u2019n groot bron van hitte en energie wanneer dit verbrand word. En die enigste \u201cbesoedeling\u201d wat jy kry is suiwer water.<\/p>\n\n\n\n
Een van die maniere om waterstof te produseer, is om watermolekules uitmekaar te breek \u2013 wat jou suurstof en waterstof gee.<\/p>\n\n\n\n
Dit word gedoen deur \u2019n elektriese proses genaamd elektrolise. Wanneer jy elektrisiteit gebruik wat van hernubare energiebronne afkomstig is, soos wind- en sonkrag, kry jy groen-waterstof. <\/p>\n\n\n\n
Omdat dit soveel hitte produseer wanneer dit verbrand word, is groen-waterstof \u2019n wenslike alternatief vir petrol, diesel of olie in die vervoerbedryf. Die skeepsbedryf, wat sowat 20% tot kweekhuisgasvrystellings bydra, is veral gretig om groen-waterstof as \u2019n alternatiewe bron van brandstof te gebruik. Omdat waterstof so moeilik is om te stoor en saam te pers, word dit dikwels gekombineer met ander molekules, soos koolstof (om metaan te maak) of stikstof (om ammonia te maak). Dit is baie beter maniere om waterstof te stoor en te gebruik.<\/p>\n\n\n\n
\u2019n Groot debat tans is of dit beter is om metaan of ammoniak as \u2019n alternatiewe brandstof in die skeepsbedryf te gebruik. Baie mense verkies ammoniak omdat dit nie CO2 vrystel nie. Dit is egter redelik giftig en gevaarlik. Metaan is baie makliker om te gebruik en te berg, maar is \u2019n uitdagende kweekhuisgas in sy eie reg as dit vrygestel word, en dit het die nadeel dat dit CO2 vrystel wanneer dit verbrand word. Maar mits jy bestaande gratis CO2 gebruik wanneer jy dit maak, behoort dit nie by te dra tot bykomende koolstofvrystellings nie.<\/p>\n\n\n\n
Die Suid-Afrikaanse sending na Denemarke, gelei deur die adjunkminister van openbare werke en vervoer, Bernice Swarts, het deur Denemarke gereis om te kyk na die prosesse en strategie\u00eb wat verskillende Deense maatskappye aanneem om voor te kom in hierdie groeiende nuwe sektor.<\/p>\n\n\n\n
Daar is op die oomblik \u2019n ophef oor groen-waterstof, maar ongeag hoe groot dit is, blyk dit duidelik dat daar ten minste \u2019n groot aanvraag daarna in die skeepsbedryf sal wees. Dit is ook duidelik dat Suid-Afrika, met die regte ondersteuning, \u2019n beduidende produsent van groen waterstof kan wees. Ons is nog sowat vier tot vyf jaar weg van die eerste grootskaalse groen waterstofproduksie in SA \u2013 maar dit kom.<\/p>\n\n\n\n
Tot volgende keer \u2013 bly veilig.<\/p>\n\n\n\n
Matt<\/p>\n","protected":false},"excerpt":{"rendered":"
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