Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : produced water


Removal of Iron From Produced Water Using Silica Adsorbent Material

Zamen K. Mekhelf; Akeel D. Subhi; Ramzy S. Hamied

Engineering and Technology Journal, 2020, Volume 38, Issue 8, Pages 1154-1159
DOI: 10.30684/etj.v38i8A.1125

The removal of Iron from produced water using adsorbent materials is taking a space of attention from the perspective of researchers. In this work, the characterization of chemically modified silica used as Iron ions adsorbent using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), laser granularity instrument was performed. The point of zero charge (PZC) of modified silica was determined using titration method. Different parameters were used to better approach Iron removal. These parameters are 0.2 and 0.4 mg/l modified silica adsorbent dose, 30-180 min adsorption time and pH values of 4-10. The results showed that modified silica exhibited higher removal efficiency of Iron due to its surface characteristics. The results also showed that at 60 min adsorption time and pH 7, the maximum Iron removal efficiency with 99.99% and 99.98% was obtained using modified silica dose of 0.4 mg/l and 0.2 mg/l, respectively.

Oil Removal from Oilfield Produced Water, North Rumaila by Combination CoagulationFlocculation and Microfiltration Technique

Thamer J. Mohammed; Eman Sh. Awad; Thabit A. Ahmed

Engineering and Technology Journal, 2019, Volume 37, Issue 2C, Pages 204-208
DOI: 10.30684/etj.37.2C.1

The Southern Oil Company, which is operated in North Rumaila oilfield in Basrah/ Iraq, is one of the important companies which produced huge amounts of produced oilfield water. The aim of this study is to treat the produced water by hybrid methods: the process of coagulation-flocculation and microfiltration technique (ceramic membrane) to remove the oil content and improve the water quality to meet the allowable limit of reinjection into the reservoir. Poly-aluminum chloride (PAC), and Ferric Chloride (FeCl3.6H2O) coagulants were used separately and in combination with cationic polyelectrolyte (PE). After produced water was treated with different doses of coagulant, it was passed through the Microfiltration technique/ ceramic membrane (0.5µm) to reach the allowable limit for reinjection. It was found that the best value of oil content after passing through ceramic membrane is 0.2 mg/L at FeCl3.6H2O dose (10 mg/L) combined with PE dose (0.6 mg/L), which was less than the allowable limit for re-injection, (5) ppm.