id	keyword
american_scientific_journal-6735	removal
american_scientific_journal-6735	cod
american_scientific_journal-6735	efficiency
american_scientific_journal-6735	electrocoagulation
american_scientific_journal-6735	wastewater
american_scientific_journal-6735	aluminum
american_scientific_journal-6735	electrodes
american_scientific_journal-6735	effect
american_scientific_journal-6735	engineering