id	keyword
american_scientific_journal-521	treatment
american_scientific_journal-521	water
american_scientific_journal-521	greywater
american_scientific_journal-521	moringa
american_scientific_journal-521	total
american_scientific_journal-521	oleifera
american_scientific_journal-521	filtration
american_scientific_journal-521	sawdust
american_scientific_journal-521	seed
american_scientific_journal-521	sand