Oil Sludge Treatment Processes

Egazar’yants, S. V.; Винокуров, В. А.; Вутолкина, А. В.; Talanova, M. Yu.; Frolov, V. I.; Караханов, Э. А.

doi:10.1007/s10553-015-0632-7

Cited by 35 publications

(16 citation statements)

References 27 publications

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“…Most of the studies about the treatment of oil sludges have been focused on crude oil tank bottom sludge (Hu et al 2013 ; Mansur et al 2016 ). However, oil sludges can also be found in other sources such as oil-water separators, desalinators, industrial wastewater, and from residuals after washing pipes in the petroleum industry facilities (da Silva et al 2012 ; Hu et al 2013 ; Egazar’yants et al 2015 ). Therefore, there is a need to test the washing in oil sludges from different sources, so four different types of sludges were chosen in this study.…”

Section: Introductionmentioning

confidence: 99%

Oil sludge washing with surfactants and co-solvents: oil recovery from different types of oil sludges

Ramírez

Shaw

Collins

2020

Environ Sci Pollut Res

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Different physicochemical and biological treatments have been used to treat oil sludges, and oil recovery techniques are preferred such as oil sludge washing (OSW) with surfactants and co-solvents. Toluene is commonly used as co-solvent, but it is non-benign to the environment. This study tested alternative co-solvents (n-pentane, n-hexane, cyclohexane, and isooctane) at 1:1 and 2:1 C/OS (co-solvent to oil sludge ratio). Also, this study evaluated the effect on the oil recovery rate (ORR) of three main parameters in the washing: type, concentration, and application ratio (S/OS) of surfactants to oil sludges. To date, no study has assessed these parameters in the washing of oil sludges from different sources. Four types of oil sludges and five surfactants (Triton X-100 and X-114, Tween 80, sodium dodecyl sulphate (SDS), and rhamnolipid) were used. The results showed that cyclohexane had high ORR and could be used instead of toluene because it is more benign to the environment. The S/OS ratio had a high effect on the ORR and depended on the type of oil sludge. Rhamnolipid, Triton X-100, and Triton X-114 had the highest oil recovery rates (40 – 70%). In addition, it was found that the surfactant concentration had no effect on the ORR. Consequently, the addition of surfactant was not significantly different compared to the washing with no surfactants, except for one sludge. The use of the surfactant in the washing solution can help in the selective extraction of specific oil hydrocarbon fractions in the recovered oil to assess its potential reuse as fuel. Further recommendations were given to improve the OSW process.

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Section: Introductionmentioning

confidence: 99%

Oil sludge washing with surfactants and co-solvents: oil recovery from different types of oil sludges

Ramírez

Shaw

Collins

2020

Environ Sci Pollut Res

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“…A ozonização pode ser aplicada a diversos resíduos, principalmente industriais. Nas indústrias petroquímicas e de oleaginosas, a borra oleosa -resíduo sólido perigoso, classe I, que não pode ser descartado sem tratamento prévio (ABNT, 2004;JIN et al, 2014;OMM-E-HANY, 2015;EGAZAR'YANTS et al, 2015) -, uma emulsão orgânica e inorgânica de alto poder calorífico, com compostos tóxicos, metais (MOREIRA, 2013), óleos e micro-organismos (ANNUAL GENERAL MEETING OF BIOMINET, 1991;SHIE et al, 2000;ZHU et al, 2014) é o resíduo mais abundante e tem desafiado diversos tipos de tratamento, apresentando componentes recalcitrantes a tratamentos convencionais (HU; LI; ZENG, 2013; MINAI-TEHRANI; ROHANIFAR; AZAMI, 2015). Diferentes tipos de tratamentos foram sugeridos: Shahi et al (2016) Quadros et al (2016), a borra como estimulante para plantações, porém com ressalvas de contaminação.…”

Section: Introductionunclassified

Planejamento e otimização do tratamento por ozonização da água de lavagem da borra oleosa do refino do petróleo

Oliveira

Moreira

Naves

2018

Rev. Bras. Ciênc. Ambient. (Online)

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O resíduo mais amplo do refino do petróleo é a borra oleosa, que pode ser lavada para se tornar um combustível, enquanto a água ácida é conduzida para tratamento convencional. Porém, muitos componentes tóxicos estão nesse resíduo, destacando a necessidade de tratamentos mais rigorosos. Assim, este estudo utilizou e otimizou a ozonização (maximizando a redução de demanda química de oxigênio e minimizando o custo) para o tratamento. Nesse processo, a água usada para lavar a borra foi submetida ao contato prolongado com ozônio em um reator. Por meio da aplicação de design of experiments e metodologia de superfície de resposta, modelos foram gerados para a redução da demanda química de oxigênio e do custo. Normal boundary intersection otimizou os modelos. Minitab gerou e desenvolveu os modelos. O estado ideal para a redução da demanda química de oxigênio foi de 51,1% e R$ 151,5.kW-1 .h-1 para o custo nas condições operacionais de pH, % de potência e tempo iguais a 7; 61,5%; e 45 minutos, respectivamente. Palavras-chave: tratamento de efluentes; oxidação avançada; design of experiments.

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“…During storage in a drilling quagmire, drilling mud contents, especially hydrocarbons, undergo a series of changes and generate pollution risk, as a result of their complex composition. Practically, multiple physicochemical processes are used in the treatment of drilling quagmires (thermal treatment, dig and dump method, separation techniques, stabilization-solidification technology, chemical method), but these have a high cost and are not environmentally friendly (Shperber et al 2011;Egazar'yants et al 2015), in contrary of microbial degradation which seems a solution, showing to be efficient, clean and low-cost process, even if it is, however, slow (Semple et al 2003;Bidoia et al 2010). In fact, paralleled to their harmfulness, drilling wastes can present a positive impact, such as plant productivity which is due to the optimization of physical and agrochemical properties of drilling muds (Shagut and Ignat'ev 2012), or landfarmed oil sludge use as a carbon source in phytoremediation processes of oily soils (Ramirez and Dussan 2014;Nanekar et al 2015), and other ecological and economical uses (Shperber, Bokovikova and Shperber 2011).…”

Section: Introductionmentioning

confidence: 99%

“…The knowledge of the physical properties and mineral availability of the drilling sludge, its composition in indigenous bacterial populations, their biodegradation capacities and the bioavailability of organic pollutants, can facilitate decisions on the efficacy of biotreatment techniques of the quagmire and determine the attainable treatment end-points (Korol et al 2005). Biological methods for detoxifying oily sludge are some of the most environmentally friendly approaches, but the range of their applications is function of their activity range, the obligate adaptation to the surrounding site conditions and the medium's properties (Egazar'yants et al 2015). Environmental factors such as soil type and structure; pH; temperature; moisture and the presence of adequate levels of nutrients and oligoelements for the activity of the oil-degrading microbial community should be kept in mind, while remediating petroleumpolluted site, such as a quagmire (Bamforth and Singleton 2005).…”

Section: Introductionmentioning

confidence: 99%

Richness of drilling sludge taken from an oil field quagmire: potentiality and environmental interest

Mansour

Nasrallah

Djenane

et al. 2016

Int. J. Environ. Sci. Technol.

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The drilling sludge represents a complex environment, containing several types of pollutants that can be even used as nutrients by indigenous microorganisms, like hydrocarbon-degrading bacteria, having good potentialities for the biodegradation of petroleum products. In this study, a drilling sludge was collected from drilling quagmire. Physicochemical characterization of the drilling sludge was done. Its mineralogy was obtained by diffractometry. The indigenous aerobic sludge hydrocarbon-degrading bacteria were checked by counting on Bushnell-Haas medium, and their isolation and purification were performed by the selective microbial enrichment technique in a batch-enriched Bushnell-Haas culture, with crude oil as the sole carbon source. Isolates were characterized, and their power to emulsify crude oil was determined by emulsification index and oil spreading tests. Environmental conditions in the quagmire, like temperature, pH and moisture, were suitable for bacterial development. Physicochemical characteristics of the drilling sludge showed richness in chemical elements and promote microbial life. Fifteen different colonies of hydrocarbon-degrading bacteria were isolated and purified; they have diversified morphological and microscopic aspects. Most isolates had a good emulsification index (between 31 and 76 %). Oil spreading test gave clear zone diameters [28 mm, with a maximum of 60 mm. The results of these investigations prove the elementary, mineralogy and microbiology richness of drilling sludge and reveal the high diversity of its indigenous hydrocarbon-degrading bacterial flora. These properties can be exploited for the own restoration of petroleum quagmires in oil fields, by means of bioremediation applications and by integrating indigenous microorganisms.

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Oil Sludge Treatment Processes

Cited by 35 publications

References 27 publications

Oil sludge washing with surfactants and co-solvents: oil recovery from different types of oil sludges

Oil sludge washing with surfactants and co-solvents: oil recovery from different types of oil sludges

Planejamento e otimização do tratamento por ozonização da água de lavagem da borra oleosa do refino do petróleo

Richness of drilling sludge taken from an oil field quagmire: potentiality and environmental interest

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