Article
Engineering, Chemical
Hailu Demissie, Guangyu An, Ruyuan Jiao, Tharindu Ritigala, Sen Lu, Dongsheng Wang
Summary: The method utilizes SDS as a sorbet to modify polycationic nanoclusters effectively removing dyes and suspended particles simultaneously in water treatment. Experimental analysis confirmed the efficiency and applicability of this approach for the treatment of dye wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Yan Xu, Yuecheng Zhang, Wei Liu, Hao Yin, Jianxin Chen, Chunyan Yang
Summary: A novel integrated technology of foam separation and TiO2 photocatalysis was developed to efficiently degrade high-concentration surfactant SDBS, achieving a high removal percentage.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Polymer Science
Anam Safri, Ashleigh Jane Fletcher
Summary: A suite of composite materials consisting of carbon xerogel and TiO2 was synthesized using a modified sol-gel method. The properties of the composites were extensively characterized and correlated with their adsorption and photodegradation performances. The homogeneity and porous structure of the composites were found to depend on the amount of TiO2 deposited in the carbon xerogel.
Article
Chemistry, Physical
N. M. El Basiony, Entsar E. Badr, Sharbat A. Baker, A. S. El-Tabei
Summary: The study reported the synthesis of a new cationic Gemini surfactant (GI-surfactant) and its inhibitory effect on X-65 steel corrosion. Results showed that GI-surfactant had a mixed-type inhibitory effect, with higher efficiency at higher concentrations but decreased at elevated temperatures. Adsorption phenomena and the Freundlich isotherm model were found to be responsible for the inhibition action of GI-surfactant, which was supported by Monte Carlo simulation and X-ray diffraction analysis.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Chemical
Hajar Merrikhpour, Sara Mobarakpour, Seyedeh Bahareh Azimi
Summary: This study investigates the adsorption capacity of modified bentonite for heavy metal ions in water. The results show that SDS modified bentonite can enhance the adsorption capacity of the natural adsorbents, with the best performance observed at 40 mM.
DESALINATION AND WATER TREATMENT
(2022)
Article
Environmental Sciences
Ping Jiang, Guanzhong Zhou, Cuihong Li, Yanfei Yu, Lin Zhou, Haibo Kang
Summary: This study investigated the use of gypsum as an adsorbent for the removal of graphene oxide (GO) under different conditions. The results showed that the optimal conditions for GO removal were a solution pH of 8.0, gypsum dosage of 60 mg, initial GO concentration of 80 mg/L, and temperature of 303 K. The adsorption of GO by gypsum followed the Langmuir isotherm model, and it was found to be a spontaneous exothermic process. Characterization of the gypsum-graphene oxide composites provided insights into the mineral interactions and their impact on contaminant removal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Chemical
Jinesh Machale, Subrata Kumar Majumder, Pallab Ghosh, Tushar Kanti Sen, Ali Saeedi
Summary: This study investigated the adsorption mechanism and maximum adsorption of a natural surfactant derived from Eichhornia crassipes on sandstone and sand surfaces, and examined the effects of various factors on the adsorption.
CHEMICAL ENGINEERING COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Ewelina Brodawka, Mieczyslaw R. Balys, Jacek Jagiello
Summary: This study analyzes the porous structure of carbon materials and discusses the optimal pore size for methane adsorption. The results provide a practical guide for the selection of adsorbents in the separation of low concentration methane mixtures.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Hemant Mittal, Ali Al Alili, Pranay P. Morajkar, Saeed M. Alhassan
Summary: The study synthesized graphene oxide crosslinked nanocomposites hydrogels of chitosan and carboxymethyl cellulose as versatile adsorbents for both cationic and anionic dyes contaminated wastewater. The adsorption process was well explained using pseudo-second-order and Langmuir models, with excellent regeneration capacity demonstrated for continuous cycles of adsorption-desorption. The synthesized CS/CMC-NCH showed great potential for effective treatment of dye-contaminated wastewater.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Multidisciplinary
Roshni Meghani, Vaibhavi Lahane, Sumana Y. Kotian, Sneh Lata, Swati Tripathi, Kausar M. Ansari, Akhilesh K. Yadav
Summary: The use of zinc-activated ginger waste derived biochar was investigated for the removal of six antibiotics from water. The biochar demonstrated high adsorption capacities for the tested antibiotics, making it a promising cost-effective material for antibiotic decontamination.
Article
Chemistry, Inorganic & Nuclear
Simparmin Br. Ginting, Fika Rofiek Mufakhir, Ardelia Widya Santi, Widi Astuti, Slamet Sumardi, Hutwan Syarifuddin, Arif Rohman, Yudha Gusti Wibowo
Summary: Different types of Zeolite/FeCl3 nanocomposites were tested for their effectiveness in removing Cr(VI) from an artificial solution. The study included the application of isotherm and kinetic models, as well as the analysis of thermodynamic factors. The results showed that a mass of 2 g of adsorbent achieved an 87% removal rate for a Cr(VI) concentration of 70 mg/L. The optimal contact time for Cr(VI) removal was found to be 4 h, resulting in a removal efficiency of 93.33%, while the optimum temperature was determined to be 30 degrees C, with a reduction of 94.25%. The isotherm model fit well to the Langmuir model, and thermodynamic analysis revealed a spontaneous and exothermic adsorption process.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Energy & Fuels
Mostafa R. Abukhadra, Marwa H. Shemy, Ahmed M. El-Sherbeeny, Ahmed Tawhid Ahmed Soliman, Wail Al Zoubi
Summary: This study investigated the sulfonation modification of raw coal using different concentrations of H2SO4 and evaluated the adsorption capacity of the sulfonated products for the pesticide methyl parathion. Results showed that higher acid concentrations led to increased amorphization degree, surface area, and acid density of the sulfonated coal. The sulfonation process also introduced active oxygenated chemical groups in the coal structure, enhancing its adsorption capacity for methyl parathion. The adsorption behavior was analyzed using mathematical models and energetic parameters, demonstrating the role of electrostatic, van der Waals, dipole bonding, p-p interactions, and hydrogen bonding forces in the adsorption process. Thermodynamic analysis revealed that the adsorption of methyl parathion by sulfonated coal was an endothermic and spontaneous reaction.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Chemistry, Applied
Hefei Wang, Dong Wang, Wei Ren, Tian Tian
Summary: The use of surfactant-modified clay minerals for the adsorption of endocrine-disrupting chemicals (EDCs) is an effective and environmentally friendly approach. This study successfully modified kaolin minerals with cationic surfactants to enhance their ability to adsorb BPA and its analogs. The experimental results showed that the modified kaolin exhibited remarkable efficiency in removing BPA from water and demonstrated a retention of over 70% of its initial adsorption capacity after five cycles of desorption and regeneration. These findings provide valuable insights into the practical application of surfactant-modified clay minerals for the elimination of hydrophobic organic pollutants from water.
JOURNAL OF SURFACTANTS AND DETERGENTS
(2023)
Article
Engineering, Environmental
Seongbin Ga, Sangwon Lee, Gwanhong Park, Jihan Kim, Matthew Realff, Jay H. Lee
Summary: Recent research focuses on S-shaped adsorption isotherms, proposing a new mathematical model to parameterize such data and reduce computational costs while broadening applications. The model also considers the temperature effect on adsorption behavior, with practical examples provided to illustrate its advantages.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Multidisciplinary
Songlin Fan, Jian Chen, Ling Tian, Chao Fan, Wenting Xu, Yanjuan Zhang, Tao Gan, Huayu Hu, Zuqiang Huang, Yuben Qin
Summary: A recyclable chitosan-based aerogel-supported TiO2 catalyst was developed to effectively treat high-concentration anionic surfactants through adsorption destroying micelles and in situ photocatalytic degradation. The catalyst exhibited excellent adsorption performance and could destroy micelles formed by high concentration of anionic surfactants.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Energy & Fuels
Riyaz Kharrat, Mehdi Zallaghi, Holger Ott
Summary: The mechanisms for enhanced oil recovery in fractured reservoirs are complex and involve gravity and capillary forces. By utilizing dimensionless numbers and a surface response model, the impact of driving forces on EOR methods was analyzed.
Article
Energy & Fuels
Shahrokh Bahrami Kashkooli, Asghar Gandomkar, Masoud Riazi, M. Sadegh Tavallali
Summary: Injecting CO2 into hydrocarbon reservoirs can increase oil production and store CO2 simultaneously. The optimization problem of CCS-EOR, using dynamic well flow settings, can improve objective values and gas storage efficiency effectively.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Shahrokh Bahrami Kashkooli, Asghar Gandomkar, Masoud Riazi, M. Sadegh Tavallali
Summary: The study demonstrates the feasibility of using genetic algorithms to improve gas storage efficiency and field oil efficiency by trapping CO2 in porous media. This enhances the security and capacity of storage by increasing the residual and CO2 capillary trappings in porous media.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Energy & Fuels
Reza Khoramian, Riyaz Kharrat, Saeed Golshokooh
Summary: A novel nanofluid has been developed by conjugating an anionic surfactant to graphene oxide nanosheets, which shows improved stability and applicability. The nanofluid has high salinity, alters oil wettability, and reduces interfacial tension, leading to higher oil recovery.
Article
Energy & Fuels
Ronald Gugl, Riyaz Kharrat, Ali Shariat, Holger Ott
Summary: The study found that foam-assisted water-alternating gas injection is more effective than water-alternating gas injection in the recovery of gas-invaded fractured reservoirs. The foam reduces the gas mobility and directs the gas from the fractures into the matrix blocks, resulting in improved oil recovery. The properties of the fractures and matrix also have a significant impact on the recovery, particularly the permeability of the fractures.
Article
Polymer Science
Nazi Azimi, Asghar Gandomkar, Mehdi Sharif
Summary: In this study, chitosan-graphene oxide-zinc oxide nanocomposites were synthesized using two different methods and their properties were investigated. The results showed that the single step preparation method resulted in a better dispersion of filler in the chitosan and enhanced the mechanical and thermal stability of the nanocomposites.
Article
Energy & Fuels
Milos Pejic, Riyaz Kharrat, Ali Kadkhodaie, Siroos Azizmohammadi, Holger Ott
Summary: This study focuses on the impact of natural fractures on production performance of reservoirs. Different fracture types and their extents were studied and found to play a crucial role in reservoir production. The study also observed different impacts of fractures in secondary recovery methods like waterflooding and gas injection. The findings improve the understanding of fracture networks' impact on oil recovery and the history matching process.
Article
Chemistry, Multidisciplinary
Reza Khoramian, Riyaz Kharrat, Peyman Pourafshary, Saeed Golshokooh, Fatemeh Hashemi
Summary: Organic surfactants have been used with different nanoparticles in enhanced oil recovery (EOR) operations. This study introduces a natural and cost-effective surfactant called Azarboo for modifying the surface traits of silica nanoparticles. The hybrid application of Azarboo surfactant and amine-modified silica nanoparticles led to improved wettability and higher oil recovery.
Article
Engineering, Chemical
Asghar Gandomkar, Mehdi Ghorbani Sheykhneshin, Hamid Reza Nasriani, Pouyan Yazdkhasti, Mir Saeid Safavi
Summary: The study investigated low salinity water alternating CO2 injection for enhanced oil recovery in oil-wet carbonate reservoirs, considering various interfacial mechanisms. Results showed that monovalent ions inhibit CO2 dissolution due to the salting-out effect, and more water shielding effect was observed in low salinity formation water. The study also highlighted the significant change in reservoir wettability and the effectiveness of low salinity alternating CO2 injection in overcoming late-production problems.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Energy & Fuels
Asghar Gandomkar, Hamid Reza Nasriani, Robert M. Enick, Farshid Torabi
Summary: In this study, a new approach was proposed to improve the gravity drainage process in the gas invaded zone by injecting poly(fluoroacrylate) (PFA) as a CO2-philic thickener. The results showed that the CO2-PFA thickener could decrease the interfacial tension and increase the CO2 diffusion coefficients, leading to an increased oil recovery of 16% in the gas invaded zone.
Review
Energy & Fuels
Riyaz Kharrat, Holger Ott
Summary: Understanding and characterizing naturally fractured reservoirs is crucial for optimizing oil recovery methods and improving reservoir management.
Article
Biochemistry & Molecular Biology
Armin Abbaspour, Arezou Jafari, Delaram Sadat Tarahomi, Seyyed Mohammad Mousavi, Riyaz Kharrat
Summary: Using Printed Circuit Boards (PCBs) powder as an additive in the growth medium increased the biopolymer production rate by 11 times compared to a pure growth medium. Characterization analysis revealed that the produced biopolymer has high thermal resistivity and a viscosity 3 times higher than water. The glass micromodel flooding test showed that a 0.5 wt% concentration of the biopolymer solution achieved a recovery rate of 42%, which was 24% higher than water flooding.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Multidisciplinary Sciences
Rakesh Kumar Pandey, Asghar Gandomkar, Behzad Vaferi, Anil Kumar, Farshid Torabi
Summary: This study aims to construct a deep learning-based classifier to select the best enhanced oil recovery (EOR) method based on the reservoir's rock and fluid properties. The proposed classifier is developed and tested on 735 EOR projects in different reservoir types and countries, demonstrating reliable performance in screening and selecting the most suitable EOR scenario with high accuracy.
SCIENTIFIC REPORTS
(2023)
Article
Energy & Fuels
Riyaz Kharrat, Nouri Alalim, Holger Ott
Summary: This study investigated the impact of hierarchical fracture networks on the production performance of gas-based enhanced oil recovery methods in a fractured reservoir with low matrix permeability and well-connected fractures. The results showed that the description of fracture networks had different sensitivity on the production performance of EOR methods, and the significance of medium and minor fracture networks decreased with the increase of intensity ratio.
Article
Chemistry, Physical
Aghil Ghaedi, Moein Nabipour, Amin Azdarpour, Asghar Gandomkar
Summary: Chemical enhanced oil recovery (CEOR) is one of the most effective methods for reducing residual oil saturation in oil reservoirs. By combining low saline water (LSW) with surfactant and alkaline-surfactant, maximum oil recovery can be achieved through different mechanisms. This study investigates the interactions between fluid-fluid and rock-fluid using various experimental techniques for two different crude oil samples. The results show that the addition of NaOH to LSW-AOS solution has a greater influence on reducing interfacial tension (IFT) and altering the rock wettability compared to Na2CO3. Furthermore, the combination of LSW-AOS-NaOH leads to a hybrid mechanism for changing wettability from oil-wet to water-wet, resulting in maximum oil recovery.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
