Removal of Nickel and Vanadium from Crude Oil by Microwave-Chemical Method. I. Chemical Method

Wen, Zhenhai; Yang, Jing; Xu, Xiang; Gao, Jin‐Sheng

doi:10.1080/10916460903330023

Cited by 9 publications

(6 citation statements)

References 6 publications

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“…In a similar approach, Wen, Yang, Xu and Gao (2013) removed nickel and vanadium from crude oil using microwave-chemical method with 35% efficiency in the presence of 500 mg/L demetallizers (synthesized from polyethylene and polyamides) at 70 °C and 5 min reaction time. The efficiency was increased to 43.41 and 41.63% for nickel and vanadium respectively at 30 min reaction time.…”

Section: Introductionmentioning

confidence: 99%

Remediation of Nickel from Crude Oil Obtained from Bomu Oil Field Using Cassava Waste Water Starch Stabilized Magnetic Nanoparticles

Konne¹,

Okpara

2014

EER

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Starch Stabilized Magnetic Nanoparticles (SSMNPs) were prepared by reacting 4.4 g of FeCl 3 .6H 2 O with 1.98 g of FeCl 2 .4H 2 O in 61 mL of 0, 0.025, 0.5, 0.1 and 0.5% w/v of cassava waste water starch solution. Deionised water (0% w/v) was used as the control. Powder X-ray diffraction analysis of the first four samples confirmed that all the samples contained magnetite nanoparticles with estimated sizes of 16.99, 15.73, 11.48 and 17.73 nm respectively. The SSMNPs were then applied in the removal of nickel ions from crude oil obtained from Bomu oil field. The samples were divided into batches A and B. Both samples were shaken for 3.3 h but only batch A was centrifuged before analysis. 0.2 mL of each sample was siphoned and dissolved in n-hexane for analysis. The results obtained showed that the sample with the least starch concentration (15.73 nm) recorded the best performance in both cases with 56 and 93% of Ni (II) complexes removal respectively. All measurements were done using a UV-VIS spectrophotometer set at λ max of 400 nm predetermined from a scan of Ni (II) ions solution.

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Section: Introductionmentioning

confidence: 99%

Remediation of Nickel from Crude Oil Obtained from Bomu Oil Field Using Cassava Waste Water Starch Stabilized Magnetic Nanoparticles

Konne¹,

Okpara

2014

EER

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“…A study conducted by Wen et al investigated the demetallization of various crude oils using sodium dimethyldithiocarbamate and water with the assistance of microwave heating. The study achieved removal efficiencies of 87% for V and 49% for Ni with microwave irradiation ranging from 100 to 800 W for 5–60 min . Shang et al applied demetallization agents with various functional groups to eliminate Ni and V from Venezuela’s crude oil under microwave heating.…”

Section: Introductionmentioning

confidence: 99%

“…The study achieved removal efficiencies of 87% for V and 49% for Ni with microwave irradiation ranging from 100 to 800 W for 5−60 min. 21 Shang et al applied demetallization agents with various functional groups to eliminate Ni and V from Venezuela's crude oil under microwave heating. In this method, vanadium and nickel can be converted into water-soluble materials without disrupting the metalloporphyrin ring structure and subsequently removed through a washing.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Nickel and Vanadium Removal from Crude Petroleum Oil Using Bis(2-ethylhexyl)phosphoric Acid: A Kinetic Study

Solouki

Monzavi

Chaouki

2023

Ind. Eng. Chem. Res.

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Among the various metals in crude oils, nickel (Ni) and vanadium (V) exist as oil-soluble organic compounds, making them extremely difficult to remove. The presence of these metals has been proven to have deleterious effects, such as catalyst poisoning and corrosion in crude refinery processes. This study aimed for Ni/V removal from Iranian crude oil using bis(2ethylhexyl)phosphoric acid (D2EHPA) under microwave heating. The impact of primary process parameters, such as temperature, residence time, and D2EHPA dosage, on Ni and V removal efficiencies was studied. The demetallization reaction kinetics and mechanism were investigated at 230−250 °C and optimized conditions. The findings demonstrated that at low microwave powers of 40−50 W, Ni and V removal efficiencies could reach up to 63% and 72%, respectively, after a reaction time of 1 h at 250 °C. The kinetics of demetallization reactions was found to be of first-order, and the activation energies and pre-exponential factors for Ni and V were estimated to be 29.8 and 34.7 kJ/mol and 16.5 and 66.2 min −1 , respectively. A well-fitted kinetic model was proposed based on the coefficients of determination. The reaction between the metalloporphyrins in crude oil and D2EHPA resulted in the substitution of Ni and V with protons provided by D2EHPA, leading to the formation of metal salts that are soluble in water. The formation of N−H bonds in the treated oil, as confirmed by the FTIR analysis results, indicated the occurrence of the demetallization reaction.

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“…In the widely used hydrodemetallization process (HDM), a high demetallization efficiency could be realized but at the expense of gradual deposition of metallic contaminants and catalyst deactivation. , On this account, it is unavoidable to pay the cost of catalyst rejuvenation and harmless disposal of spent catalysts, especially for processing heavy oils with ultrahigh metal contents. Comparably, the chemical demetallization method shows operational flexibility and high demetallization efficiency with the help of various chemical reagents, making it a promising pretreatment method for processing heavy oils with ultrahigh metal contents or for protecting catalysts. − However, recent studies mostly focus on synthesizing innovative demetallization reagents while ignoring the reaction characteristics of asphaltenes and the phase behavior caused by the hydrophilic reagents.…”

Section: Introductionmentioning

confidence: 99%

Effect of Colloidal Stability and Miscibility of Polar/Aromatic Phases on Heavy Oil Demetallization

et al. 2022

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Chemical demetallization is a promising pretreatment method for processing heavy residues with ultrahigh metal content. However, hydrophilic demetallization reagents usually have poor miscibility with the lipophilic oil phase and tend to break the colloidal stability of heavy oils, limiting the demetallization effectiveness. It was first found that maltenes could promote the demetallization percentage of the asphaltenes fraction from 35.7% to 74.3%. Herein, the effect of colloidal stability and miscibility of the polar/aromatic phases on asphaltenes demetallization was investigated. Optical and UV−vis monitoring, as well as dynamic light scattering, revealed that maltenes could substantially hinder the formation of asphaltenes deposition after the addition of methanesulfonic acid. The interfacial tension between the polar/aromatic phases was significantly reduced by maltenes and had a strong linear correlation with asphaltenes demetallization efficiency. It was also observed that the byproducts after demetallization could be efficiently eluted in the presence of maltenes. The addition of surfactants or antisolvents also affected asphaltenes demetallization. The colloidal stability and the miscibility of reagents in oils may be essential considerations for the chemical demetallization method of residue oils.

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Removal of Nickel and Vanadium from Crude Oil by Microwave-Chemical Method. I. Chemical Method

Cited by 9 publications

References 6 publications

Remediation of Nickel from Crude Oil Obtained from Bomu Oil Field Using Cassava Waste Water Starch Stabilized Magnetic Nanoparticles

Remediation of Nickel from Crude Oil Obtained from Bomu Oil Field Using Cassava Waste Water Starch Stabilized Magnetic Nanoparticles

Microwave-Assisted Nickel and Vanadium Removal from Crude Petroleum Oil Using Bis(2-ethylhexyl)phosphoric Acid: A Kinetic Study

Effect of Colloidal Stability and Miscibility of Polar/Aromatic Phases on Heavy Oil Demetallization

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