Article
Engineering, Environmental
Soledad Mateo, Alberto J. Moya, Gassan Hodaifa, Sebastian Sanchez, Manuel Cuevas
Summary: This study aimed to analyze the use of olive endocarp as an adsorbent to remove furfural from fermentation culture media. Results showed that higher adsorption percentages were observed with smaller fragmented OE particles, agitation speeds in the range of 80-250 rpm, and a adsorbent load of 90 g OE/300 cm3 of furfural solution.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Oluwayinka M. Adedeji, Kauser Jahan
Summary: In this study, the adsorption of oxidizable reducing pollutants from aqueous co-product (ACP) onto granular and powdered activated carbon (GAC and PAC) was investigated. The results showed that PAC exhibited higher adsorptive capacity than GAC for COD, boron, copper, and phenol. The adsorption isotherms followed different models for PAC and GAC, and the Free Energy Change (Delta G0) indicated spontaneous reactions for copper and phenol adsorption. This study provides important information for the design of adsorption systems for ACP treatment.
Article
Chemistry, Multidisciplinary
Biswanath Mahanty, Shishir Kumar Behera, Naresh Kumar Sahoo
Summary: The Dubinin-Radushkevich (D-R) isotherm is still widely used in solid/liquid interface adsorption models. However, the adsorption potential (epsilon) is often expressed in a dimensionally inconsistent form, instead of the correct form. Despite being pointed out by Hu and Zhang (2019), the incorrect use of the isotherm continues, with only a few articles referring to the correct form and source of required solubility (C-s) data. Modeling using datasets from three selected references indicates that using the incorrect expression would have variable impact on maximum adsorption capacity estimates, while consistently overestimating the sorption energy.
SEPARATION SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Chemical
Ackmez Mudhoo, Charles U. Pittman Jr
Summary: This study investigates the adsorption of dissolved solutes from aqueous solutions and finds the limitations of using the Dubinin-Radushkevich model with an 8 kJ mol-1 characteristic free energy of adsorption (E). A new parameter (gamma corr) is introduced to improve the predictive capability of the aqueous-phase D/R model. Experimental results show that using RT ln(gamma corr center dot cs/ce) improves the prediction of aqueous-phase adsorption data.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Environmental Sciences
Angel Villabona-Ortiz, Angel Gonzalez-Delgado, Candelaria Tejada-Tovar
Summary: Adsorption equilibrium and kinetics of hexavalent chromium on lignocellulosic adsorbents from oil palm bagasse and yam peels were studied, revealing a strong adsorption capacity under various temperature, adsorbent dose and particle size conditions. The adsorption mechanism was found to be mainly controlled by chemical reaction processes.
Article
Construction & Building Technology
Mohamad G. Khararoodi, Fariborz Haghighat, Jiping Zhu, Chang-Seo Lee, Jianjun Niu
Summary: This paper develops a mathematical model to predict the performance of an activated carbon filter in removing mixtures of ozone and volatile organic compounds in typical indoor environments. The model takes into account reaction rates, adsorption isotherms, and the effect of by-products on the filter's surface. By fitting the model to experimental results, it shows remarkable predictive capability in determining the breakthrough behavior of the filter. The model is more sensitive to adsorption isotherm parameters compared to reaction kinetic parameters.
BUILDING AND ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Oleg Golubyatnikov, Evgeny Akulinin
Summary: This paper demonstrates the potential of using the Dubinin-Radushkevich-Astakhov equation to calculate adsorption isotherms of gases on micropore industrial zeolites. Experimental adsorption isotherms of H2, CO2, CO, CH4, and N2 on 13X and 5A zeolites have been obtained, and the range of limiting adsorption volume and characteristic adsorption energy has been established. The paper also proposes an optimization problem for determining affinity coefficients, which allows the calculation of gas adsorption isotherms on zeolites using only one experimental isotherm of standard gas N2.
SEPARATION SCIENCE AND TECHNOLOGY
(2022)
Article
Energy & Fuels
Fengyang Xiong, Gernot Rother, Yiwen Gong, Joachim Moortgat
Summary: This paper examines the adsorption behavior of shale gas and compares different models, developing a practical methodology for use in supercritical conditions, providing guidance for future research on shale gas adsorption.
Article
Environmental Sciences
Mehmet Fatih Dilekoglu
Summary: This study investigates the adsorption of Malachite Green dye substance on sheep manure derived biochar for the first time, demonstrating its effectiveness as a natural and cost-effective adsorbent with a high dye removal capacity of 208.33 mg g(-1). It serves as a guiding study for the conversion of agricultural waste into products with highly added value.
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2022)
Article
Energy & Fuels
Rais Ahmad, Mohammad Osama Ejaz
Summary: In this study, a potential bentonite/silver nanoparticles-alginate bio-nanocomposite was synthesized and found to be effective in adsorbing methylene blue dye. The surface morphology of the bio-nanocomposite was analyzed using various analytical methods, and the optimum adsorption conditions and Langmuir isotherm fitting results were determined. The adsorption was confirmed to be endothermic and spontaneous based on the thermodynamic parameters.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Environmental Sciences
Reem Mohammed Alharbi, Essam Nageh Sholkamy, Khawla Ibrahim Alsamhary, Neveen Abdel-Raouf, Ibraheem Borie M. Ibraheem
Summary: This study investigated the ability of Chlorella vulgaris to remove arsenic from water. Optimal conditions for arsenic removal, such as biomass amount, incubation time, initial arsenic level, and pH values, were determined. The maximum removal efficiency of arsenic from water was 93% under certain conditions. The Langmuir isotherm was found to be the most accurate model for arsenic adsorption by C. vulgaris.
Review
Chemistry, Physical
Shveta Sharma, Ashish Kumar
Summary: This study summarizes research on using different compounds as corrosion inhibitors for different metals in various solutions. It reviews that the excellent inhibition efficiency of organic compounds is due to the presence of heteroatoms and pi electron cloud in conjugation.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Laishram Saya, W. Rameshwor Singh, Sunita Hooda
Summary: Given the large amount of harmful pharmaceuticals being released into the water stream, it is crucial to eradicate or reduce these chemicals to a minimum permissible limit. This study reports the fabrication of a magnetic guar gum graphene oxide nano-composite (mGG/GO NC) for the adsorption of ciprofloxacin from wastewater. Various techniques were used to characterize the guar gum and the nanocomposite, and it was found that the adsorption process followed the pseudo second order model and Langmuir isotherm model. The nanocomposite exhibited high adsorption capacity and recyclability, potentially due to a synergistic effect of multiple interactions in the adsorption mechanism.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Review
Engineering, Environmental
Hemant Kumar Joshi, Mahesh Chandra Vishwakarma, Rajesh Kumar, Harish Sharma, Narendra Singh Bhandari, Sushil Kumar Joshi
Summary: This study examined the biosorption of zinc ions and the removal efficiency of various biosorbents, identifying promising candidates and investigating aspects such as adsorption mechanisms, equilibria, models, kinetics, and thermodynamics. The research highlighted the need for scale-up and commercialization of biosorption techniques for industrial water purification systems.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Rana Malhas, Taiyeba Alamgir, Abrar Benhusain, Nadeen Alotaibi, Noor Alhaddad
Summary: In this study, the effects of various process parameters on the removal of oil from oily wastewater using Fe3O4 magnetic nanoparticles were investigated. The results showed that Fe3O4 nanoparticles are highly effective and reusable for oil removal.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Chemical
Omar Dagdag, Rajesh Haldhar, Seong-Cheol Kim, Lei Guo, M. El Gouri, Elyor Berdimurodov, O. Hamed, S. Jodeh, Ekemini D. Akpan, Eno E. Ebenso
Summary: The utilization of organic compounds has been proven to be an effective method for controlling corrosion, but significant atomic changes are needed due to their small molecular size. Using epoxy resins as inhibitors can provide excellent metal protection.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2023)
Review
Materials Science, Multidisciplinary
Nnabuk Okon Eddy, Anduang O. Odiongenyi, Eno E. Ebenso, Rajni Garg, Rishav Garg
Summary: The use of plant leaves as corrosion inhibitors has been widely recognized as one of the best options, but little attention has been given to the future implications or risks of using plant wastes as alternative sources. This study reviewed the potential of plant wastes such as peels and rinds as sustainable corrosion inhibitors and found that they have excellent corrosion inhibition capacity. Computational chemistry was used to resolve challenges in understanding their inhibition mechanism.
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Ime Bassey Obot, Ahmad A. Sorour, Chandrabhan Verma, Turki A. Al-Khaldi, Anas S. Rushaid
Summary: In the oil and gas industry, dissolved CO2 and H2S in transport fluids contribute to a majority of internal corrosion failures, leading to significant financial losses. The severity and mechanism of corrosion depend on various parameters, including temperature, partial pressures of CO2 and H2S, pH, flow velocity, salt concentrations, and availability of corrosive species. This review outlines the key parameters affecting sweet and sour corrosion, discusses their impact on corrosion risk assessment and inhibition, and identifies gaps in knowledge and future research directions.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Chemistry, Physical
Otheman Amrhar, Han-Seung Lee, Hassane Lgaz, Avni Berisha, Eno E. Ebenso, Youngjae Cho
Summary: In this study, the adsorption properties of two anionic dyes on the (110) surface of rutile titanium dioxide were investigated using computational methods. The results showed that the AY36 dye was more reactive and had a better adsorption capability compared to the AO6 dye. The (110) surface of TiO2 exhibited a higher affinity towards the AY36 dye.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Materials Science, Multidisciplinary
Shveta Sharma, Ashish Kumar, Eno E. Ebenso
Summary: Metals and alloys are widely used but prone to corrosion, which necessitates the development of corrosion prevention technologies. MXene materials, despite their potential in various applications, have been less studied for their anticorrosion performance due to their susceptibility to oxidation. This review briefly discusses the use of MXene in reducing corrosion.
Article
Materials Science, Multidisciplinary
Walid Daoudi, Mohamed Azzouzi, Omar Dagdag, Ali El Boutaybi, Avni Berisha, Eno E. Ebenso, Adyl Oussaid, Abdelmalik El Aatiaoui
Summary: In this study, two new Imidazo[1.2-a]pyridine chalcones were synthesized and characterized. The results showed that these compounds have significant inhibitory effects on the corrosion of mild steel, with maximum efficiencies of 92.43% and 95.40% for IMZ1 and IMZ2, respectively. Theoretical and computational studies provided insights into the adsorption behavior of these compounds on the metal surface.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Walid Daoudi, Abdelmalik El Aatiaoui, Omar Dagdag, Kaoutar Zaidi, Rajesh Haldhar, Seong-Cheol Kim, Abdelouahad Oussaid, Abdelouahad Aouinti, Avni Berisha, Fouad Benhiba, Eno Effiong Ebenso, Adyl Oussaid
Summary: In this study, a biopolymer (CHA) was extracted from Artemisia herba-alba plant in Morocco and characterized. The extracted CHA exhibited excellent corrosion inhibition properties for mild steel in 1 M HCl medium, with a maximum inhibition efficiency of 96.17% at a concentration of 800 mg/L. The Langmuir adsorption isotherm was observed for CHA, indicating the presence of electrostatic and covalent bonds. The protective layer formed by the extract on the metal surface was confirmed by SEM analysis.
Review
Chemistry, Inorganic & Nuclear
Ekemini D. Akpan, O. Dagdag, Eno E. Ebenso
Summary: Hydantoin is a non-aromatic heterocycle with five potential derivatizable sites. It is widely used in the synthesis of metal complexes and has various pharmaceutical and corrosion inhibitory properties. This review focuses on the coordination abilities of hydantoin derivatives as ligands in organometallic chemistry and their application as corrosion inhibitors. The research gaps and future perspectives are also discussed.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Chemistry, Physical
Ikenna B. Onyeachu, Mumtaz A. Quraishi, Ime Bassey Obot
Summary: This research investigates the CO2 corrosion inhibition characteristics of a synthesized pyrimidine derivative with nitrogen-based functional groups. The compound shows highly effective and stable film formation at low doses under prolonged corrosion period. Experimental results confirm the compound's ability to effectively inhibit CO2 corrosion and enhance steel's corrosion resistance.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Multidisciplinary
Walid Daoudi, Brahim El Ibrahimi, Omar Dagdag, Elyor Berdimurodov, Lei Guo, Eno E. Ebenso, Adyl Oussaid, Abdelmalik El Aatiaoui
Summary: We synthesized a new chlorophenyl-imidazole derivative, (E)-3-[2-(4-chlorophenyl)imidazo[1,2-a]pyridin-3-yl]-1-mesitylprop-2-en-1one (IMCH), as an effective corrosion inhibitor for mild steel (MS) in 1 M HCl solution. IMCH has additional electron donor groups and functional groups compared to previous inhibitors. Its chalcone structure was confirmed by various characterization techniques. The corrosion inhibition efficiency of IMCH was investigated by different methods and its adsorption on the metal surface was found to be spontaneous and occurred through chemisorption and physisorption.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Review
Energy & Fuels
Ime Bassey Obot, Ahmad A. Sorour, Yohanes Chekol Malede, Tao Chen, Qiwei Wang, Norah Aljeaban
Summary: High-temperature CO2 corrosion is a major problem in the oil and gas industry, causing frequent failures and high maintenance costs. The development of reliable testing methods to evaluate corrosion inhibitors under harsh conditions is a major challenge. This paper reviews the testing methodologies and characterization techniques for evaluating sweet corrosion inhibitors under extreme conditions, and describes the challenges, knowledge gaps, and future perspectives related to high-temperature sweet corrosion testing methods. The rotating cage autoclave is found to be the most effective testing equipment for simulating the corrosion attack of metallic parts in the oil and gas industry.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Physical
A. Bouhraoua, O. M. A. Khamaysa, I. Selatnia, H. Lgaz, A. Sid, H. Zeghache, Eno E. Ebenso, Han-Seung Lee
Summary: A new imine derivative, ADAO, was synthesized and evaluated as a corrosion inhibitor for carbon steel in 1.0 mol/L HCl. The molecular structure of ADAO was analyzed using different spectroscopic methods. The results showed that ADAO exhibited excellent corrosion inhibition performance, with a maximum efficiency of 97.24% at a concentration of 10-4 mol/L. The adsorption behavior of ADAO on the steel surface followed Langmuir isotherm, indicating both physical and chemical interactions.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Multidisciplinary Sciences
Rachid Ihamdane, Malika Tiskar, Brahim Outemsaa, Lamyaa Zelmat, Omar Dagdag, Avni Berisha, Elyor Berdimurodov, Eno E. Ebenso, Abdelaziz Chaouch
Summary: In this study, Oregano (Origanum vulgare) leaf essential oil was investigated as an environmentally friendly corrosion inhibitor for carbon steel in hydrochloric acid. The corrosion inhibition mechanism was studied through surface morphology analysis, electrochemical tests, weight loss measurements, theoretical calculations, and computational methods. The results showed that O. vulgare had the highest inhibition performance of 85.64% at a concentration of 2 g/l in 1 M HCl. The adsorption of the O. vulgare inhibitor on the metal surface was attributed to the formation of rigid covalent bonds, and the hydroxyl functional groups and benzoyl rings were found to be the main contributors to the high inhibition efficiency.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Wafaa Zriouel, Aziz Bentis, Sanaa Majid, Belkheir Hammouti, Said Gmouh, Peace S. Umoren, Saviour A. Umoren
Summary: This study investigates the corrosion inhibition potential of two distinct Blue Tansy essential oils with varying chemical compositions. The evaluation reveals compelling insights, showing the inhibition efficiency of the oils exhibits an intriguing, damped oscillation pattern with fluctuating concentrations. It also confirms the oils as mixed-type inhibitors and provides molecular analyses for understanding their interactions and toxicity risks.
Article
Chemistry, Multidisciplinary
Sujata Kumari Gupta, Raj Kumar Mehta, Nilam Kumari, Mahendra Yadav, I. B. Obot
Summary: In this study, two corrosion inhibitors were synthesized and their corrosion inhibition behavior and adsorption properties on mild steel were investigated. The results showed that these inhibitors exhibited high inhibition efficacy and could form a corrosion protective film on the surface of mild steel.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
