![]() Mainly due to its structural characteristics, which provide highly Guar gum is a biopolymer used in several sectors of the industry, The optimization of these factors can considerably improve ![]() Time influence the efficiency of the wastewater clarification process. flocculants, mixing speed, time, pH, temperature and retention Ĭlarification by the addition of polymer flocculants has beenĮxtensively used for wastewater treatment. Main mechanisms: flocculation, adsorption and complexation. Processes that use polymers to treat oily water employ three Hydrocyclones gravitational separators and filtration, which uses different kinds of materials including sawdust The following methods areĬommonly used by the oil industry to reduce O&G concentration inĪqueous effluents: liquid–liquid extraction air flotation The literature reports a wide variety of processes to treat Of oily waters and other effluents have awoken significant interest,ĭue to the more stringent resolutions and laws enacted. In recent years, new technologies developed for the treatment The commonly used technologies to reduce O&G concentrationĪre not usually able to achieve the necessary efficiency. With a daily maximum of 42 mg/L, is applied. Specifically for disposal on offshore platforms, CONAMA Resolution 393/2007, whichĮstablishes monthly mean O&G concentration of up to 29 mg/L, In Brazil, the National Environment Council (CONAMA) established a limit of 20 mg/L of oil and grease in the oily water to beĭisposed of, according to Resolution 357/2005. Management has become a serious public issue due to the improperĭisposal practices of many oil and gas companies. It isĬonsidered the main effluent produced by the petroleum industryĭue to its toxic nature and effects on the environment, oily water The high volumes involved, particularly in mature oil fields. Most important residue from oil extraction is oily water, due to Most industrial processes produce sub products, which are considered sources of pollution and, as such, require treatment. In the case of initial O&G above 100 ppm, the oil removal Was highly efficient in synthetic oily waters. Salting out effect, the oil was imprisoned in the interstices of the collapsed gel. When the guar gum gel was prepared in situ in the produced water, after the The salting out effect occurs with reticulation of the polymeric chains by borate ions and in the presence ofĮlectrolytes, reducing the solubility of the polymeric network in the solution and leading to an electrolyteand polymer-rich phase. In this study, guar gum, under specificĬonditions, shapes itself into three-dimensional structures with interesting physicochemical properties. In this respect, guar gum can be used to treat petroleum-contaminated waters, with theĪdvantage of being a low-cost, highly-hydrophilic natural polymer. Treatment by conventional methods, oil and grease (O&G) concentration being the primary parameterįor final disposal. Low-cost polymers are being used as alternative materials to treat oily waters after Is a worrisome by-product of the oil industry due to its growing volume in mature basins and complexĬhemical composition. The increasing amount of oil wastewater is causing serious damage to the environment. Institute of Chemistry, Federal University of Rio Grande do Norte, Natal, RN, Brazil Marcus Vinicius Gomes Paixão ∗, Rosangela de Carvalho Balaban Journal homepage: Application of guar gum in brine clarification and oily water treatment International Journal of Biological Macromolecules International Journal of Biological Macromolecules 108 (2018) 119–126Ĭontents lists available at ScienceDirect ![]()
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