Absorpsi gas karbon dioksida melalui membran superhidrofobik menggunakan pelarut polietilen glikol: studi kasus pengaruh laju alir pelarut, konsentrasi pelarut, dan jumlah serat membran = Gas carbon dioxide absorption through a membrane superhidrofobik using polyethylene glycol solvent: case study effect of solvent flow rate, solvent concentration, and amount of fiber membranes