Abstract
Adsorption with bentonite offers an efficient, cost-effective and environmentally friendly method for the treatment of ammonia-phenolic wastewater. Therefore, raw bentonite and organoactivated bentonite with hexadecyl trimethyl ammonium bromide (CTAB) were used as adsorbents for the removal of total ammonia, total phenols and total cyanides from untreated ammonia-phenolic wastewater. Better percent removal of total ammonia (34.64%), total phenols (42.50%) from ammonia-phenolic wastewater was achieved with CTAB activated bentonite compared to raw bentonite. Raw bentonite is recommended for the removal of cyanide ions from ammonia-phenolic wastewater over CTAB activated bentonite. Although both adsorbents give a similar percentage of removal, raw bentonite is considered a cheaper option compared to activated due to additional cost and time, so it would be the choice for removing these ions.
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