An effective process for removing organic compounds from oily sludge using soluble metallic salt

Jing, Guolin; Luan, Mingming; Han, Chunjie; Chen, Tingting; Wang, Huaiyuan

doi:10.1016/j.jiec.2012.02.002

Cited by 18 publications

(4 citation statements)

References 15 publications

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“…Oily sludge, commonly recognized as a hazardous waste, poses severe threats to the environment and human health, if insufficiently treated or improperly disposed. , In recent years, the effective treatment of oily sludge has become an issue of great concern worldwide. Several treatment methods have been developed including incineration, , solidification/stabilization, oxidization, biodegradation, , pyrolysis, and solvent extraction. − However, because of the complicated composition of oily sludge, few technologies can achieve a compromised balance between satisfying strict environmental regulations and reducing treatment costs.…”

Section: Introductionmentioning

confidence: 99%

Crude Oil Recovery from Oily Sludge Using Liquefied Dimethyl Ether Extraction: A Comparison with Conventional Extraction Methods

et al. 2021

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Oily sludge is an inevitable byproduct of the crude oil industry. The efficient recovery of oil contributes to economic improvement and pollution reduction. In this study, we investigated the recovery of oil from oily sludge using liquefied dimethyl ether (DME) extraction and explored the effects of the operational parameters on the oil recovery ratio. The results demonstrated that the DME/sludge ratio, extraction time, and stirring speed positively affected the oil recovery. In addition, the highest oil recovery ratio of 96.3 wt % was obtained under the optimal conditions of DME/sludge ratio 40 mL/g, extraction time 45 min, and stirring speed 40 rpm. The extraction pressure ranged between 0.5 to 0.9 MPa did not significantly affect the recovery ratio. Subsequently, the oil recovery ratio and the properties of the recovered oil and solid residue obtained by DME extraction were compared with those obtained by three traditional methods: mechanical shaking extraction, ultrasonic extraction, and Soxhlet extraction. The oil recovery ratio obtained by DME extraction (96.3 wt %) was higher than that obtained by mechanical shaking extraction (71.8 wt %) and ultrasonic extraction (90.5 wt %). The oil recovered by DME had a relatively higher H/C ratio and contained more saturated hydrocarbons and light compounds compared with the other three n-hexane extraction methods. Considering that heavy metals cannot be removed using DME extraction, solid residues rich in heavy metals necessitate appropriate disposal. In particular, DME extraction is a promising technology for effectively recovering crude oil from oily sludge and oil sands.

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Section: Introductionmentioning

confidence: 99%

Crude Oil Recovery from Oily Sludge Using Liquefied Dimethyl Ether Extraction: A Comparison with Conventional Extraction Methods

et al. 2021

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“…However, the waste produced from petroleum processing and its derivatives leads to a serious problem worldwide. The vast amounts of oily sludge which is listed as most significant solid waste generated from a variety of sources, including on-site wastewater treatment pond which cause a problem due to high costs in terms of treatment and disposal methods [1] Among environmental contaminants produced from petroleum industry, petroleum accounts for approximately 70% of the total environmental pollution due to production of high volume of oily sludge during drilling process, storage, transportation or refining of petroleum to obtain crude oil products. As for Malaysia, the quantity of waste oil or oily sludge generated by 2013 for about 5277.57 metric tonnes per year and the quantity of waste of oil sludge from oil refinery accounts for about 935.81 metric tonnes per year [2].…”

Section: Introductionmentioning

confidence: 99%

Removal of Oil and Heavy Metals from Oily Sludge using Esterquat Surfactant via Surfactant-Enhanced Oil Recovery (SEOR)

S.W.*,

N.A.,

K.N.

et al. 2019

IJRTE

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Oily sludge is one of the most significant solid waste materials generated by petroleum refinery plant. Due to high concentration of petroleum hydrocarbon (PHCs) that is considered as harmful and hazardous waste to human beings and environmental, the initiative was developed to minimize this issue by performing investigation on cationic plant-based esterquat surfactant for oil recovery and heavy metal removal from oily sludge via Surfactant-enhanced Oil Recovery (SEOR). Based on the research finding, oily sludge has significant amount of volatile matters (32.22 wt%) which consists of hazardous PAHs that needs to be removed from oily sludge. Cationic esterquat surfactant has been introduced in removal of heavy metal and oil from oily sludge. Result shows the CMCs of cationic esterquat surfactant obtained was about 125mg/L via conductivity method and spectrophotometric method. The percentage of oil recovery obtained was 74.62% at esterquat concentration of 125 mg/L with significant removal on chromium (Cr) and lead (Pb). This finding shows the potential of cationic esterquat surfactant in enhancing the oil and metal removal from oily sludge.

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“…Biodegradation with special bacterial strains selected for this particular pollutant can be considered satisfactory [16][17][18]. Alternative methods could be the chemical oxidation, wet oxidation (WO), CWO or one of the Advanced Oxidation Processes (AOP's) [19], followed by biological treatment at a usual wastewater treatment plant (WWTP) [3,8,[20][21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Wet oxidation of dimethylformamide via designed experiments approach studied with Ru and Ir containing Ti mesh monolith catalysts

Szabados

Srankó

Somodi

et al. 2016

Journal of Industrial and Engineering Chemistry

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An effective process for removing organic compounds from oily sludge using soluble metallic salt

Cited by 18 publications

References 15 publications

Crude Oil Recovery from Oily Sludge Using Liquefied Dimethyl Ether Extraction: A Comparison with Conventional Extraction Methods

Crude Oil Recovery from Oily Sludge Using Liquefied Dimethyl Ether Extraction: A Comparison with Conventional Extraction Methods

Removal of Oil and Heavy Metals from Oily Sludge using Esterquat Surfactant via Surfactant-Enhanced Oil Recovery (SEOR)

Wet oxidation of dimethylformamide via designed experiments approach studied with Ru and Ir containing Ti mesh monolith catalysts

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