Article
Energy & Fuels
Marwa M. Naeem, Eslam G. Al-Sakkari, Daria C. Boffito, Eldon R. Rene, Mamdouh A. Gadalla, Fatma H. Ashour
Summary: Sonication and heterogeneous catalysis have been widely studied to enhance biodiesel production. In this study, sonication was used for single-stage biodiesel generation from waste oil catalyzed by KOH/corncob activated carbon. Optimized reaction conditions were determined as 3 wt % catalyst loading, 5 min reaction time, and 18:1 methanol-to-oil molar ratio, resulting in an 88% biodiesel yield without soap formation and meeting ASTM criteria. The combination of ultrasound-assisted heterogeneous catalysis improved overall biodiesel productivity, economic viability, and environmental performance.
Article
Chemistry, Applied
Hongqi Wang, Richard Gunawan, Zhitao Wang, Lei Zhang, Yurong Liu, Shuai Wang, M. D. Mahmudul Hasan, Chun-Zhu Li
Summary: This study suggests that distillation of bio-oil at high pressure can effectively reduce polymerisation and increase distillate yields. High pressure not only reduces polymerisation, but also intensifies the flash separation step.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Agricultural Engineering
S. P. Iglesias, M. R. Miyazaki, A. P. Mariano, T. T. Franco
Summary: Techno-economic analysis was conducted on the production of bio-oil from Eucalyptus grandis residues in Sao Paulo, Brazil, showing potential for economically viable centralized biorefineries. The study found that plant capacity has the most significant impact on the minimum selling price (MSP) of bio-oil, with the production able to achieve high net present value (NPV) and internal rate of return (IRR) indicators.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Engineering, Chemical
Georgios Maroukis, Michael C. Georgiadis
Summary: This article investigates the conventional cryogenic distillation technology and emerging membrane gas separation technology for high-purity argon recovery from air. The study finds that innovative materials such as carbon membranes are more efficient in the separation process. An optimization-based techno-economic analysis reveals that the cryogenic distillation process has lower operational costs for a certain final product purity.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Thermodynamics
Karittha Im-orb, Amornchai Arpornwichanop
Summary: A techno-economic assessment was conducted to compare the production of bio-methanol and bio-dimethyl ether (bio-DME) via gasification-MeOH and gasification-DME processes. The analysis found that gasification-MeOH produced a higher amount of valuable product (methanol) but released more CO2, while gasification-DME had a higher biomass conversion efficiency. In terms of economics, due to higher product prices, the gasification-DME process was approximately 7% more economically feasible.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Chemistry, Applied
Hongqi Wang, Yurong Liu, Lei Zhang, Richard Gunawan, Zhitao Wang, Chun-Zhu Li
Summary: Distribution and reaction of aromatic compounds in bio-oil play a critical role in its further processing, with pressure, methanol, and Ca(OH)2 being potential factors to promote or inhibit the enrichment of aromatic compounds into the distillate fraction.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Thermodynamics
Allan Almeida Albuquerque, Flora T. T. Ng, Leandro Danielski, Luiz Stragevitch
Summary: Three solid acid-catalyzed processes for biodiesel production were designed and optimized, with processes A and B found to be the most economically and environmentally friendly options. Process A, with a simpler flowsheet, was identified as the best choice compared to process B.
Article
Engineering, Chemical
Qiuyan Ding, Hong Li, Zhanpeng Liang, Rui Zuo, Songzhe Huang, Xingang Li, Yilai Jiao, Xin Gao
Summary: This study proposes an economical and energy-efficient reactive distillation process using excess lactic acid to address the energy consumption and yield issues in the production of bio-ethyl lactate. The proposed process has significant economic and environmental advantages, resulting in cost reduction and gas emissions reduction.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Energy & Fuels
Temitayo Giwa, Maryam Akbari, Amit Kumar
Summary: The integrated, multi-product approach to biorefining has the potential to improve the economic outlook of biorefineries and biofuel production. The scenario that produces hydrogen from non-condensable gases and ethanol from biochar is the most profitable, and the profitability is influenced by product prices, capital cost, and feedstock cost.
Article
Energy & Fuels
Jiashun Hu, Xuanying Chen, Xiaoxue Yang, Ruosong Li, Le Wu
Summary: As bio-energy is the only carbon-containing renewable energy source, its development and utilization are crucial to addressing the energy crisis and the greenhouse effect. In order to reduce the production cost of bio-fuels, bio-oil derived from biomass and algae can be co-processed with vacuum gas oil in an existing catalytic cracking unit, resulting in the production of gasoline and diesel products with renewable carbon. Techno-economic analysis revealed that the co-processing scenario involving hydrothermal liquefaction provided a clear economic advantage.
Article
Engineering, Chemical
Magda Correia Santos, Daniel Fernandes Costa, Allan Almeida Albuquerque, Joao Inacio Soletti, Simoni Margareti Plentz Meneghetti
Summary: This research evaluates the energetic, economic, qualitative, and environmental aspects of bioethanol fuel purification systems and proposes two alternatives that can reduce costs and CO2 emissions. The alternative processes show better performance in terms of energy consumption, operating costs, and CO2 emissions reduction compared to the conventional system.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Energy & Fuels
Khalaf J. Jabbar, Sharif H. Zein, Abbas H. Hasan, Usama Ahmed, A. A. Jalil
Summary: This paper presents a comprehensive analysis of the optimal design and simulation of a crude oil distillation system in a refinery process. The study focuses on pre-treatment and blending of two crude oils to increase the refinery's annual profit. The results show that by using Aspen HYSYS simulation, the distillation unit can be optimized and the heat integration approach can save about 2.29 pound million per year. Economic analysis and cut yields were conducted to determine the cost-effectiveness of each scenario, and scenario three showed the best performance with a high cumulative cash flow of 31,886 pound M.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Multidisciplinary Sciences
Denzel Christopher Makepa, Chido Hermes Chihobo, Downmore Musademba
Summary: This study evaluates the economic viability and environmental impact of microwave-assisted pyrolysis of pine sawdust for biodiesel production. The results show that the method is economically viable but requires optimization of crucial process variables.
Article
Biotechnology & Applied Microbiology
Ali Nikkhah, Hasan Nikkhah, Amir Shahbazi, Mona Kamelan Zargar Zarin, Duygu Beykal Iz, Mohammad-Taghi Ebadi, Mohammad Fakhroleslam, Burcu Beykal
Summary: Cumin and eucalyptus essential oils were enriched to meet ISO standards using a dynamic fractional distillation process. The optimization results showed low operating costs and potential for improving process efficiency.
FOOD AND BIOPRODUCTS PROCESSING
(2024)
Article
Thermodynamics
Nitipat Phichitsurathaworn, Lida Simasatitkul, Suksun Amornraksa, Amata Anantpinijwatna, Pongtorn Charoensuppanimit, Suttichai Assabumrungrat
Summary: Coupling the BHD process with methanol synthesis can significantly increase hydrogen recovery rate, reduce CO2 and CO emissions, and improve the internal rate of return (IRR) and net present value (NPV).
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Environmental Sciences
Yusuf G. Adewuyi, Md Arif Khan
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Materials Science, Biomaterials
M. Arif Khan, William T. Wallace, Jatinder Sambi, Dennis Trent Rogers, John M. Littleton, Stephen E. Rankin, Barbara L. Knutson
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2020)
Article
Biophysics
Mahsa Moradipour, Emily K. Chase, M. Arif Khan, Shardrack O. Asare, Bert C. Lynn, Stephen E. Rankin, Barbara L. Knutson
COLLOIDS AND SURFACES B-BIOINTERFACES
(2020)
Review
Engineering, Environmental
Friday O. Ochedi, Yangxian Liu, Yusuf G. Adewuyi
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2020)
Article
Engineering, Chemical
M. Arif Khan, Mahsa Moradipour, Md Obeidullah, A. K. M. Abdul Quader
Summary: This study investigates the drying behavior of different freshwater fishes (with/without scales) using a convective heated air dryer, analyzing drying kinetics, effective diffusivity, and energy aspect. Different drying models were fitted for fishes with or without scales, showing the influence of scales on drying. The results can be utilized in designing fish drying systems with different characteristics.
JOURNAL OF FOOD PROCESS ENGINEERING
(2021)
Article
Chemistry, Physical
M. Arif Khan, Maelyn R. Kiser, Mahsa Moradipour, Emily A. Nadeau, Ramy W. Ghanim, Bruce A. Webb, Stephen E. Rankin, Barbara L. Knutson
JOURNAL OF PHYSICAL CHEMISTRY B
(2020)
Review
Chemistry, Multidisciplinary
Yusuf G. Adewuyi
Summary: This Mini Review provides an overview of geopolymers, discussing their potential applications in environmental and energy fields. It emphasizes the utilization of fly-ash waste for the synthesis of adsorbents and catalysts, highlighting the economic and environmental benefits of geopolymer technology.
Article
Chemistry, Multidisciplinary
Adnan Raza Altaf, Haipeng Teng, Liu Gang, Yusuf G. Adewuyi, Maosheng Zheng
Summary: A thermally stable magnetic tea biochar was synthesized using a facile yet innovative sonochemical method to capture elemental mercury (Hg-0) from syngas. The synthesized magnetic sorbent demonstrated improved surface area, pore structures, paramagnetic properties, and Hg-0 removal efficiency compared to a simply synthesized magnetic sorbent. Additionally, surface-active components were identified as the key factor for the high Hg-0 removal performance of the sorbent in complex syngas.
Article
Chemistry, Physical
Yuxin He, M. Arif Khan, Andrew Drake, Ramy Ghanim, Joshua Garay, Aniruddha Shirodkar, Joseph Strzalka, Qingteng Zhang, Barbara L. Knutson, Stephen E. Rankin
Summary: The development of mesoporous structure during calcination of titania-doped mesoporous silica thin films was characterized by in situ grazing-incidence small-angle X-ray scattering (GISAXS). The incorporation of titania using different methods and amounts influenced the final structure of the films, with weak Si-O-Ti bonds playing a crucial role in the sintering process. Anisotropic stress and annealing led to the merging of randomly oriented pores into vertically oriented channels with a pore diameter of around 2.3 nm. Surfactant complexation also played a role in the transformation of the structure.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Sukanta K. Mondal, Chenglin Wu, Felix C. Nwadire, Ali Rownaghi, Aditya Kumar, Yusuf Adewuyi, Monday U. Okoronkwo
Summary: Biopolymers and alkali-activated materials are effective adsorbents for heavy metal removal from aqueous solutions. This study prepared hybrid adsorbents from both materials and investigated the effect of chitosan dosage on the removal efficiency of Pb(II) and Zn(II). The adsorbents showed high removal efficiencies for both metals, with Zn(II) being more effectively adsorbed. The addition of chitosan had little impact on the overall efficiency, except for a decrease with 0.05% chitosan. The choice of alkaline activating solution also influenced the adsorption performance.
Article
Engineering, Chemical
Yuxin He, M. Arif Khan, Andrew D. Drake, Folami Ladipo, Stephen E. Rankin, Barbara L. Knutson
Summary: In this study, the transport of two redox probes in silica nanoporous thin films was compared. It was found that functionalization of the films with an IL-like group acted as a barrier to hydrophilic probe, while showing less impact on the hydrophobic probe. Physical confinement of ILs in the pores did not significantly affect the transport properties. Tuning solute transport through nanoconfined ILs using pore size and surface functionalization is critical for designing composite thin films for IL-based separation and energy storage applications.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Chemical
Yusuf G. Adewuyi, M. Arif Khan
Summary: This study investigates the removal of nitrogen oxides (NO) and sulfur dioxide (SO2) using heat-activated peroxydisulfate in the presence or absence of SO2. The results show that the presence of SO2 significantly enhances the removal of NO. This research provides valuable guidance for designing efficient flue gas treatment systems.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Adnan Raza Altaf, Yusuf G. Adewuyi, Haipeng Teng, Liu Gang, Fazeel Abid
Summary: This study synthesized multiple sorbent materials and improved the Hg-0 removal performance from coal syngas by applying citric acid/ultrasonic treatment. TSCUF0.3 demonstrated the highest Hg-0 capturing performance and the removal mechanism was proposed. The active Hg-0 removal performance was attributed to the valence Fe3O4 and lattice oxygen content on the sorbent surface, as well as the activation by H2S/HCl gases. This work provides a practical approach for utilizing cheap and eco-friendly tea waste to control Hg-0 emission.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2022)
Article
Nanoscience & Nanotechnology
Shanshan Zhou, Emily A. Nadeau, M. Arif Khan, Bruce A. Webb, Stephen E. Rankin, Barbara L. Knutson
Summary: This study investigates the impact of confinement on the mobility of dsRNA in silica nanopores of different sizes. The results show that pore size affects the loading and exchange capability of dsRNA, while surface mobility plays a crucial role in the movement of dsRNA.
ACS APPLIED BIO MATERIALS
(2021)
Article
Materials Science, Biomaterials
Md Arif Khan, Madeleine Fugate, Dennis T. Rogers, Jatinder Sambi, John M. Littleton, Stephen E. Rankin, Barbara L. Knutson
Summary: The uptake and expulsion mechanisms of engineered mesoporous silica nanoparticles (MSNPs) in hairy roots were examined, showing that functionalization and surface charge play a key role in their effectiveness. Weakly charged MSNPs functionalized only with Ti were taken up and expelled by thermally activated mechanisms, while amine-modified positively charged particles were mainly taken up and expelled through direct penetration of cell walls. Amine-functionalized MSNPs moved spontaneously in and out of plant cells through dynamic exchange, suggesting potential as a biomolecule nanoharvesting platform for plant organ cultures.
Article
Engineering, Chemical
Andrea Coletto, Pietro Poesio
Summary: Experiments and simulations were conducted to study the air volume fraction and hold-up in a bubble channel reactor. A new signal processing method was proposed to avoid the loss of bubble residence time. The results were in agreement with previous studies and a bubble-scale model was developed to explain the relationship between hold-up and air superficial velocity.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2024)
