id	keyword
american_scientific_journal-6839	hydrate
american_scientific_journal-6839	gas
american_scientific_journal-6839	water
american_scientific_journal-6839	formation
american_scientific_journal-6839	methane
american_scientific_journal-6839	sds
american_scientific_journal-6839	pressure
american_scientific_journal-6839	temperature
american_scientific_journal-6839	additives
american_scientific_journal-6839	desalination