Removal of organic pollutants from produced water by batch adsorption treatment

Abstract

This paper studied the adsorption of chemical oxygen demand (COD), oil and turbidity of the produced water (PW) which accompanies the production and reconnaissance of oil after treating utilizing powdered activated carbon (PAC), clinoptilolite natural zeolite (CNZ) and synthetic zeolite type X (XSZ). Moreover, the paper deals with the comparison of pollutant removal over different adsorbents. Adsorption was executed in a batch adsorption system. The effects of adsorbent dosage, time, pH, oil concentration and temperature were studied in order to find the best operating conditions. The adsorption isotherm models of Langmuir, Freundlich and Temkin were investigated. Using pseudo-first-order and pseudo-second-order kinetic models, the kinetics of oil sorption and the shift in COD content on PAC and CNZ were investigated. At a PAC adsorbent dose of 0.25 g/100 mL, maximum oil removal efficiencies (99.57, 95.87 and 99.84 percent), COD and total petroleum hydrocarbon (TPH) were identified. Moreover, when zeolite X was used at a concentration of 0.25 g/100 mL, the highest turbidity removal efficiency (99.97%) was achieved. It is not dissimilar to what you would get with PAC (99.65 percent). In comparison with zeolites, the findings showed that adsorption over PAC is the most powerful method for removing organic contaminants from PW. In addition, recycling of the consumed adsorbents was carried out in this study to see whether the adsorbents could be reused. Chemical and thermal treatment will effectively regenerate and reuse powdered activated carbon and zeolites that have been eaten. Graphic abstract

Bio-Treatment Technologies of Produced Water: A Review

“…Engineering and Technology Journal 40 (9) (2022) ` depends on several variables; the type of hydrocarbon, type of reservoir, salinity, conditions (temperature and pressure), viscosity, and speed of up-flow [6].…”

“…The vast quantities of PW led to the desire to recycle it through re-injection to increase petroleum production and reuse it for various industrial uses such as power plants, irrigation, and fire control. These uses have attracted many researchers to describe the physical and chemical treatment techniques of PW in several works [6,[8][9][10]. However, despite their efficiency, physio-chemical techniques such as chemical oxidation, adsorption, and membrane filtration have challenges in terms of lowering economic cost, amount of energy consumed, performance efficiency, and effects on the environment.…”

Facile Synthesis of ZIF-67 for the Adsorption of Methyl Green from Wastewater: Integrating Molecular Models and Experimental Evidence to Comprehend the Removal Mechanism

“…The textile, paper, tanning, cosmetic, and pharmaceutical sectors all produce organic dye wastewater [ 3 ], which is very hazardous and cannot be decomposed into the environment [ 4 ]. In order to ensure the continued existence of aquatic life, toxic compounds must be removed from the environment [ 5 , 6 ].…”

Synthesis and Characterization of Hydroxyethyl Cellulose Grafted with Copolymer of Polyaniline and Polypyrrole Biocomposite for Adsorption of Dyes

“…Since the zero-emission cannot be validated with the existing infra-structures and traditional dyeing technologies, a number of chemical, biological and physical approaches have been employed for effluent treatments for the removal of dyes and other pollutants [ 4 , 5 , 6 ]. Among physical treatment methods, the adsorption methodology has received much industrial attention due to cheaper infrastructure, high reusability, and operationally facile approaches [ 7 , 8 , 9 ]. Over the years various adsorbents with different physical and chemical properties have been utilized for dye removal by adsorption showing different efficiency levels.…”