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- 검색키워드
- 저자 : Jaber Neshati (검색결과 3 건)
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Using the electrokinetic remediation (EKR) technique for the soil remediation from the contaminants
Biabanaki Faraz,Neshati Jaber,Ehteshami Majid 한국자원공학회 2023 Geosystem engineering Vol.26 No.1
Nowadays, soil pollution caused by petroleum extraction has received much attention due to its negative environmental impact. Hence, the present study aims to propose the optimal solution to confront the environmental damage of contaminated soil. The major novelty of this work lies in the accuracy of the electrokinetic technique used in the study. The electrokinetic remediation (EKR) technique is considered for soil remediation, and seven tests are conducted, among which only four tests present efficient results. Notably, Kaolinite is the soil considered in this study, and the soil is contaminated with diesel fuel. The experiments are performed in 3 and 10 days with 20 and 30 V. The initial pollutant contents are 10% and 20%, based on which the results are analyzed. The obtained results represent the remarkable capability of the EKR method for soil remediation and highlight the most optimal condition for each test. The contributions of this study are considered beneficial for those environmental managers aiming to tackle soil pollution with the best approach.
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Electrochemical and anticorrosion behavior of functionalized graphite nanoplatelets epoxy coating
Somayeh Mohammadi,Faramarz Afshar Taromi,Homeira Shariatpanahi,Jaber Neshati,MAHMOUD HEMMATI 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6
Functionalized graphite nanoplatelets (FGNP) were used as efficient and compatible nano-particles toproduce homogenous epoxy nano-coating with impressive anticorrosion behavior for carbon steel. Thecharacterizations of the nano-particle and nano-coating were carried out by SEM, FT-IR, XRD, TEM andpull-off test. Fine distribution of nano-particles in the cured nano-coating with particle sizes of 20–40 nm was obtained. Electrochemical experiments, salt spray and X-ray fluorescence showed that thenano-coatings protect the metal substrate by formation of passive layer and physical barriercharacteristics. Three samples (0.25%, 0.5% and 1%) of FGNP-epoxy coatings were prepared that 0.5%showed better anticorrosion properties.
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Alireza Rahimi,Majid Abdouss,Abdolreza Farhadian,Lei Guo,Savas Kaya,Jaber Neshati 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.113 No.-
A novel thermally stable inhibitor was developed based on citric acid and glucose (CAGCI) to inhibit thecorrosion of mild steel (MS) in simulated acidic oilfield water for oil well acidizing. All electrochemicalmeasurements were performed in a temperature range of 293–363 K to evaluate the inhibition powerof CAGCI. The results of electrochemical tests clearly revealed that CAGCI effectively inhibited MS corrosionvia a mixed-type mechanism and 77 104 M of the inhibitor provided the highest inhibition efficiencyof 90%, 93.6%, 93.7%, and 89.9% at 293 K, 313 K, 333 K, and 363 K, respectively. In addition, CAGCIprovided a total polarization resistance of 416.7 O cm2 for MS at 293 K and decreased the corrosion rate ofthe metal 7.6 times compared to blank at 363 K. Moreover, the UV–visible results demonstrated the formationof the Fe2+-CAGCI complex and the results of the surface analysis confirmed the presence of a protectivefilm of CAGCI molecules on the MS surface. Finally, the experimental outcomes were wellcomplemented by results obtained from density-functional study and molecular dynamics (MD) simulation. According to quantum calculations, citric acid and aromatic rings in the structure of CAGCI playedthe main role in electron exchanges with the MS surface. The results of the MD simulation were also confirmedthat a hydrophobic barrier can be formed by CAGCI molecules on the MS surface with a paralleladsorption configuration.
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