This research was conducted to determine the removal percentage and isotherm adsorption model of the oil and gas industry wastewater treatment using activated Carbon made from water hyacinth (Eichhornia crassipes). The method of making the adsorbent was carried out by impregnation of dry water hyacinth using H3PO4 followed by carbonisation in a furnace at a temperature of 600℃ for 3 hours. The processed wastewater feeds the oil and gas industry’s primary effluent treatment-secondary effluent treatment (PET-SET). Variations in this study were adsorbent dose (1, 3, and 5 g) and contact time (0, 15, 30, 45, 60, 90, 120, 180, 240 minutes). Parameters reviewed in the study were COD levels and turbidity in wastewater. The research was carried out in a batch system on a laboratory scale. COD was analysed with MERCK Spectroquant Prove 600 No. 335 and turbidity with Turbidimeter of Hanna HI 98703. The results showed that the highest percent of COD removal reached 54.65% when the contact time was 240 minutes with an adsorbent dose of 5 g. The highest turbidity removal reached 73.82% at a contact time of 240 minutes with 1 g of adsorbent. Almost all variations resulted in regression over 0.9 both Langmuir and Freundlich isotherms, whether for COD and turbidity. Using error analysis calculations, the adsorption process of wastewater from the oil and gas industry onto water hyacinth activated Carbon followed the Langmuir isotherm adsorption model with a maximum adsorption capacity of 8.46 mg/g for COD and 6.65 mg/g for turbidity. It concluded that the activated Carbon made from water hyacinth was an effective adsorbent for application in wastewater treatment from the oil and gas industry.

Topics
Measuring instruments, Hydrology, Waste-water treatment, Carbon based materials, Langmuir isotherm, Industry, Review
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