Article
Environmental Sciences
Raid Alrowais, Muhammad Tariq Bashir, Muhammad Ali Sikandar, Md. Munir Hayet Khan, Bandar Alwushayh, Ahmed Ghazy, Md. Alhaz Uddin, Javed Iqbal
Summary: This study explored the synthesis of a composite material (NMO-BC) for removing manganese and iron pollutants from water. The researchers used various analysis methods to identify the unique characteristics of the composite material and investigated the kinetics and mechanisms of adsorption. The results showed that NMO-BC has a high adsorption capacity for manganese and iron. This study contributes to the understanding and potential application of NMO-BC in water pollution monitoring and treatment.
Article
Agriculture, Multidisciplinary
Zuzana Bytesnikova, Jakub Pecenka, Dorota Tekielska, Tomas Kiss, Pavel Svec, Andrea Ridoskova, Petr Bezdicka, Jana Pekarkova, Ales Eichmeier, Robert Pokluda, Vojtech Adam, Lukas Richtera
Summary: Xanthomonas euvesicatoria (Xe) is a bacterium that causes bacterial spot disease in tomato and pepper plants, leading to significant economic losses. A nanocomposite consisting of Cu and Ag loaded onto reduced graphene oxide (rGO) has been developed as an efficient biocide for crop disease management, with better protection effects than commercial bactericide.
CHEMICAL AND BIOLOGICAL TECHNOLOGIES IN AGRICULTURE
(2022)
Article
Chemistry, Inorganic & Nuclear
R. Rajkumar, A. S. Alagar Nedunchezhian, D. Sidharth, K. Kalaiarasan, M. Arivanandhan, R. Jayavel, G. Anbalagan
Summary: In this study, CuMn1-xYbxO2 nanostructures with different Yb substitution levels were prepared by high energy ball milling, and their structural and electrical properties were investigated. The results demonstrate that Yb substitution can enhance the thermoelectric performance of CuMnO2 nanostructures, with the 0.05 Yb-substituted sample showing a higher figure of merit (ZT) at 668K.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Ibrahim A. Alsafari
Summary: In this study, bare copper oxide CuO nanoparticles, MXene nanosheets and their CuO/MXene nanocomposite were synthesized to enhance photocatalytic activity. The synthesized nanocomposite showed increased surface area and superior photocatalytic activity, attributed to the effective intercalation of nanoparticles between the MXene nanosheets.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Applied
Clarissa Cocuzza, Enrico Sartoretti, Chiara Novara, Fabrizio Giorgis, Samir Bensaid, Nunzio Russo, Debora Fino, Marco Piumetti
Summary: A set of Cu-Mn oxides was synthesized using solution combustion synthesis method with varying copper and manganese ratios. The physico-chemical properties of the samples were investigated with various techniques, and the catalysts were tested for total VOC oxidation. The best performance was achieved with a copper content ranging from 15 at % to 45 at%, and the catalysts exhibited good stability and low water vapor inhibition.
Article
Chemistry, Multidisciplinary
Jing Luo, Shin Ying Foong, William Woei Fong Chong, Meenakshi Verma, Su Shiung Lam, Christian Sonne, Qian Li, Shengbo Ge
Summary: This study investigated the pyrolysis of poplar mixed with different types and ratios of nanometal oxide catalyst. The results showed that Fe2O3 exhibited desirable performance in enhancing the decomposition of poplar. The analysis also revealed that the produced bio-oil contained acetaldehyde, methyl glyoxal, furfural, d-allose, and acetic acid, which have potential applications in pharmaceuticals, industrial processes, and agricultural endeavours.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Chemistry, Multidisciplinary
Yi Wei, Wenhua Li, Qi Wang, Mengyu Liu, Peiyuan Liang, Lina Wang, Tianjun Sun
Summary: Several MnFe-based multi-metal oxides were synthesized as NH3-SCR catalysts for reducing NOx emissions of marine diesel exhausts. The Co and Nb-doped MnFeCeAl catalysts showed high NOx conversion and N2 selectivity, and the MnFeCeAlCo catalysts inhibited sulfate species growth in humid-SO2 gases. The doping of Co, Nb, Sm, and Sb enhanced interactions among different components, promoted active component dispersion, improved redox properties and surface acidity, and raised the atomic ratios of high-valent Mn species and surface adsorbed oxygen, resulting in excellent SCR performance and humid-SO2 resistance.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Syed Ghazanfar Ali, Uzma Haseen, Mohammad Jalal, Rais Ahmad Khan, Ali Alsalme, Hilal Ahmad, Haris Manzoor Khan
Summary: In this study, copper oxide nanoparticles were synthesized using the leaves of Aegle marmelos plant and characterized by various techniques. The nanoparticles showed a crystalline structure and exhibited antimicrobial activity and photocatalytic degradation of organic dyes.
Article
Chemistry, Physical
Yuanyuan Liu, Wei Zhu, Zhen Chen, Qiang Yu, Qi Hu, Zhaoyi Zheng, Lai Gui, Yuzhu Song
Summary: Anode materials PbO2-MnO2, PbO2-CoOx, and PbO2-MnO2-CoOx were prepared by anodic oxidation in the nitrate system. The PbO2-MnO2-CoOx anodes showed superior electrochemical performance compared to traditional PbO2, PbO2-MnO2, and PbO2-CoOx anodes, indicating practical value for reducing energy consumption.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Cheng Cheng, Qiang He, Jian Zhang, Hongxiang Chai, Yujing Yang, Spyros G. Pavlostathis, Haiming Wu
Summary: This study investigated the mechanisms and effects of manganese oxide-mediated ammonium oxidation in wetlands. The results showed that wetlands with manganese sand had a higher removal efficiency of ammonium nitrogen and reduced nitrous oxide emission. The manganese sand delayed the oxidation of ammonium nitrogen, and the presence of specific bacterial communities promoted the removal of ammonium nitrogen.
Article
Engineering, Environmental
Yi Wei, Peiyuan Liang, Yunhe Li, Yingping Zhao, Xiubo Min, Ping Tao, Jiangliang Hu, Tianjun Sun
Summary: A series of Mn-Fe mixed oxides doped with CeO2, Al2O3, and Sm2O3 were prepared and used as catalysts for NH3-SCR of marine diesel exhausts. The co-doped Mn-Fe oxide catalyst showed the best deNOx activity and SO2 tolerance. The addition of Ce promoted the formation of Mn-Fe solid solutions, while Al enhanced the dispersion of different elements in the catalysts. The introduction of Ce, Al, and Sm species adjusted the reduction properties, increased surface acidity sites, and improved catalytic activity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Wen-Jun Qiang, Qing Huang, Jia-Hao Shen, Qin-Fei Ke, Jun-Ying Lue, Ya-Ping Guo
Summary: In this study, CuO and MnO2 catalysts were deposited on a glass-fiber supporter for the efficient oxidation of formaldehyde. The synergistic effect of MnO2 major catalysts and CuO cocatalysts in promoting the thermocatalytic oxidation of formaldehyde was revealed.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Materials Science, Ceramics
Shannon E. Murray, Yu-Ying Lin, Soumitra S. Sulekar, Mebatsion S. Gebre, Nicola H. Perry, Daniel P. Shoemaker
Summary: Reactive flash sintering is an effective method for densifying and synthesizing ceramic materials, but the predictive capability of the BBR model for phase transformations during the process is limited. CuO reduction and Mn(2)O(3) reduction demonstrate the challenges of predicting phase transformations due to local, stochastic current flow and localized heating. Understanding and engineering the complex thermal profile that results from these sources of inhomogeneity can be beneficial for optimizing reaction kinetics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Thermodynamics
Umit Agbulut, Suat Saridemir, Upendra Rajak, Fikret Polat, Asif Afzal, Tikendra Nath Verma
Summary: The addition of CuO nanoparticles to diesel fuel can improve combustion efficiency, reduce emissions, increase fuel heating value, decrease fuel consumption, and enhance thermal efficiency. CuO additives lead to lower CO, HC, and NOx emissions, along with improved combustion characteristics and engine performance.
Article
Energy & Fuels
Mohammad Ashourdan, Abolfazl Semnani, Foroozan Hasanpour, Seyyed Ebrahim Moosavifard
Summary: Transition metal oxides show promise for energy storage due to their redox reactions and stability. CuMnO2 nanocrystals and CuMnO2/GQD composite were synthesized and used in a new supercapacitor, with GQD improving specific capacity and efficiency. The CuMnO2/GQD nanocomposite showed higher stability and capacity retention after 5000 charge/discharge cycles compared to CuMnO2 nanoparticles.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Thermodynamics
Kandasamy Hariharan, Gowri Sankar Senthil Kumar, Govindaraj Kumaresan, Ramalingam Velraj
HEAT TRANSFER ENGINEERING
(2018)
Article
Thermodynamics
Govindaraj Kumaresan, Ravichandran Santosh, Ponnukutti Duraisamy, Ramar Venkatesan, Nathamani Satheesh Kumar
HEAT TRANSFER ENGINEERING
(2018)
Review
Green & Sustainable Science & Technology
R. Santosh, T. Arunkumar, R. Velraj, G. Kumaresan
JOURNAL OF CLEANER PRODUCTION
(2019)
Article
Energy & Fuels
A. K. Babu, G. Kumaresan, V. Antony Aroul Raj, R. Velraj
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2020)
Article
Mechanics
Anantharaman Sriraman, H. Revanth, M. R. Swaminathan
Article
Thermodynamics
M. Pramothraj, R. Santosh, M. R. Swaminathan, G. Kumaresan
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2020)
Article
Engineering, Chemical
R. Santosh, G. Kumaresan, S. Selvaraj, T. Arunkumar, R. Velraj
Article
Engineering, Electrical & Electronic
Suppurayan Selvaraj, Govindaraj Kumaresan, Mohammed Ali Jagabar Sathik
INTERNATIONAL TRANSACTIONS ON ELECTRICAL ENERGY SYSTEMS
(2020)
Article
Energy & Fuels
V. S. Vigneswaran, G. Kumaresan, B. Dinakar, K. Karthick Kamal, R. Velraj
JOURNAL OF ENERGY STORAGE
(2019)
Article
Engineering, Mechanical
A. K. Babu, G. Kumaresan, V. Antony Aroul Raja, R. Velraj
STROJNISKI VESTNIK-JOURNAL OF MECHANICAL ENGINEERING
(2020)
Article
Engineering, Chemical
R. Santosh, G. Kumaresan, G. Krishna Kumar, R. Velraj
Article
Engineering, Mechanical
Gopu Govindaraj, Kumaresan Govindarajan, Swaminathan Mangudi Rangaswamy
Summary: This investigation aims to experimentally analyze the effect of different hot tubes on the energy separation performance of a counter-flow Ranque-Hilsch vortex tube and study their influence on nozzle numbers. Interchangeable hot tubes made of plexiglass, teflon, steel, and aluminum were used to examine the influence of different materials. Brass vortex generators with nozzle numbers 2, 3, 4, 5, and 6 were used to understand how the optimum number of nozzles is influenced by the change of hot tube material. Experimental results indicate that hot tubes with different materials have an impact on the heating and cooling performance of the Ranque-Hilsch vortex tubes, especially with increasing inlet pressure and higher nozzle numbers (N > 3). Plastic tubes show decreased cooling performance with increasing nozzle numbers, while metal tubes show increased cooling performance. Plexiglass hot tubes have a higher COPcooling of 55% compared to aluminum hot tubes at an input pressure of 2 bar.
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY-TRANSACTIONS OF MECHANICAL ENGINEERING
(2023)
Proceedings Paper
Thermodynamics
G. Kumaresan, R. Santosh, H. Revanth, G. Raju, S. Bhattacharyya
XII INTERNATIONAL CONFERENCE ON COMPUTATIONAL HEAT, MASS AND MOMENTUM TRANSFER (ICCHMT 2019)
(2019)
Article
Engineering, Chemical
V. S. Vigneswaran, G. Kumaresan, S. Elansezhiyan, R. Velraj
DESALINATION AND WATER TREATMENT
(2019)
Article
Energy & Fuels
Yingna Du, Chen Huang, Wei Jiang, Qiangwei Yan, Yongfei Li, Gang Chen
Summary: In this study, anionic surfactants modified hydrotalcite was used as a flow improver for crude oil under low-temperature conditions. The modified hydrotalcite showed a significant viscosity reduction effect on crude oil. The mechanism of the modified hydrotalcite on viscosity and pour point of crude oil was explored through characterization and analysis of the modified hydrotalcite and oil samples.
Article
Energy & Fuels
Mohammad Saeid Rostami, Mohammad Mehdi Khodaei
Summary: In this study, a hybrid structure, MIL-53(Al)@MWCNT, was synthesized by combining MIL-53(Al) particles and -COOH functionalized multi-walled carbon nanotube (MWCNT). The hybrid structure was then embedded in a polyethersulfone (PES) polymer matrix to prepare a mixed matrix membrane (MMM) for CO2/CH4 and CO2/N2 separation. The addition of MWCNTs prevented MIL-53(Al) aggregation, improved membrane mechanical properties, and enhanced gas separation efficiency.
Article
Energy & Fuels
Yunlong Li, Desheng Huang, Xiaomeng Dong, Daoyong Yang
Summary: This study develops theoretical and experimental techniques to determine the phase behavior and physical properties of DME/flue gas/water/heavy oil systems. Eight constant composition expansion (CCE) tests are conducted to obtain new experimental data. A thermodynamic model is used to accurately predict saturation pressure and swelling factors, as well as the phase boundaries of N2/heavy oil systems and DME/CO2/heavy oil systems, with high accuracy.
Article
Energy & Fuels
Morteza Afkhamipour, Ebad Seifi, Arash Esmaeili, Mohammad Shamsi, Tohid N. Borhani
Summary: Non-conventional amines are being researched worldwide to overcome the limitations of traditional amines like MEA and MDEA. Adequate process and thermodynamic models are crucial for understanding the applicability and performance of these amines in CO2 absorption, but studies on process modeling for these amines are limited. This study used rate-based modeling and Deshmukh-Mather method to model CO2 absorption by DETA solution in a packed column, validated the model with experimental data, and conducted a sensitivity analysis of mass transfer correlations. The study also compared the CO2 absorption efficiency of DETA solution with an ionic solvent [bmim]-[PF6] and highlighted the importance of finding optimum operational parameters for maximum absorption efficiency.
Article
Energy & Fuels
Arastoo Abdi, Mohamad Awarke, M. Reza Malayeri, Masoud Riazi
Summary: The utilization of smart water in EOR operations has gained attention, but more research is needed to understand the complex mechanisms involved. This study investigated the interfacial tension between smart water and crude oil, considering factors such as salt, pH, asphaltene type, and aged smart water. The results revealed that the hydration of ions in smart water plays a key role in its efficacy, with acidic and basic asphaltene acting as intrinsic surfactants. The pH also influenced the interfacial tension, and the aged smart water's interaction with crude oil depended on asphaltene type, salt, and salinity.
Article
Energy & Fuels
Dongao Zhu, Kun Zhu, Lixian Xu, Haiyan Huang, Jing He, Wenshuai Zhu, Huaming Li, Wei Jiang
Summary: In this study, cobalt-based metal-organic frameworks (Co-based MOFs) were used as supports and co-catalysts to confine the NHPI catalyst, solving the leaching issue. The NHPI@Co-MOF with carboxyl groups exhibited stronger acidity and facilitated the generation of active oxygen radicals O2•, resulting in enhanced catalytic activity. This research provides valuable insights into the selection of suitable organic linkers and broadens the research horizon of MOF hybrids in efficient oxidative desulfurization (ODS) applications.
Article
Energy & Fuels
Edwin G. Hoyos, Gloria Amo-Duodu, U. Gulsum Kiral, Laura Vargas-Estrada, Raquel Lebrero, Rail Munoz
Summary: This study investigated the impact of carbon-coated zero-valent nanoparticle concentration on photosynthetic biogas upgrading. The addition of nanoparticles significantly increased microalgae productivity and enhanced nitrogen and phosphorus assimilation. The presence of nanoparticles also improved the quality of biomethane produced.
Article
Energy & Fuels
Yao Xiao, Asma Leghari, Linfeng Liu, Fangchao Yu, Ming Gao, Lu Ding, Yu Yang, Xueli Chen, Xiaoyu Yan, Fuchen Wang
Summary: Iron is added as a flocculant in wastewater treatment and the hydrothermal carbonization (HTC) of sludge produces wastewater containing Fe. This study investigates the effect of aqueous phase (AP) recycling on hydrochar properties, iron evolution and environmental assessment during HTC of sludge. The results show that AP recycling process improves the dewatering performance of hydrochar and facilitates the recovery of Fe from the liquid phase.
Article
Energy & Fuels
He Liang, Tao Wang, Zhenmin Luo, Jianliang Yu, Weizhai Yi, Fangming Cheng, Jingyu Zhao, Xingqing Yan, Jun Deng, Jihao Shi
Summary: This study investigated the influence of inhibitors (carbon dioxide, nitrogen, and heptafluoropropane) on the lower flammability limit of hydrogen and determined the critical inhibitory concentration needed for complete suppression. The impact of inhibitors on explosive characteristics was evaluated, and the inhibitory mechanism was analyzed with chemical kinetics. The results showed that with the increase of inhibitor quantity, the lower flammability limit of hydrogen also increased. The research findings can contribute to the safe utilization of hydrogen energy.
Article
Energy & Fuels
Zonghui Liu, Zhongze Zhang, Yali Zhou, Ziling Wang, Mingyang Du, Zhe Wen, Bing Yan, Qingxiang Ma, Na Liu, Bing Xue
Summary: In this study, high-performance solid catalysts based on phosphotungstic acid (HPW) supported on Zr-SBA-15 were synthesized and evaluated for the one-pot conversion of furfural (FUR) to γ-valerolactone (GVL). The catalysts were characterized using various techniques, and the ratio of HPW and Zr was found to significantly affect the selectivity of GVL. The HPW/Zr-SBA-15 (2-4-15) catalyst exhibited the highest GVL yield (83%) under optimized reaction conditions, and it was determined that a balance between Bronsted acid sites (BAS) and Lewis acid sites (LAS) was crucial for achieving higher catalytic performance. The reaction parameters and catalyst stability were also investigated.
Article
Energy & Fuels
Michael Stoehr, Stephan Ruoff, Bastian Rauch, Wolfgang Meier, Patrick Le Clercq
Summary: As part of the global energy transition, an experimental study was conducted to understand the effects of different fuel properties on droplet vaporization for various conventional and alternative fuels. The study utilized a flow channel to measure the evolution of droplet diameters over time and distance. The results revealed the temperature-dependent effects of physical properties, such as boiling point, liquid density, and enthalpy of vaporization, and showed the complex interactions of preferential vaporization and temperature-dependent influences of physical properties for multi-component fuels.
Article
Energy & Fuels
Yuan Zhuang, Ruikang Wu, Xinyan Wang, Rui Zhai, Changyong Gao
Summary: Through experimental validation and optimization of the chemical kinetic model, it was found that methanol can accelerate the oxidation reaction of ammonia, and methanol can be rapidly oxidized at high concentration. HO2 was found to generate a significant amount of OH radicals, facilitating the oxidation of methanol and ammonia. Rating: 7.5/10.
Article
Energy & Fuels
Radwan M. EL-Zohairy, Ahmed S. Attia, A. S. Huzayyin, Ahmed I. EL-Seesy
Summary: This paper presents a lab-scale experimental study on the impact of diethyl ether (DEE) as an additive to waste cooking oil biodiesel with Jet A-1 on combustion and emission features of a swirl-stabilized premixed flame. The addition of DEE to biodiesel significantly affects the flame temperature distribution and emissions. The W20D20 blend of DEE, biodiesel, and Jet A-1 shows similar flame temperature distribution to Jet A-1 and significantly reduces UHC, CO, and NOx emissions compared to Jet A-1.
Article
Energy & Fuels
Jiang Bian, Ziyuan Zhao, Yang Liu, Ran Cheng, Xuerui Zang, Xuewen Cao
Summary: This study presents a novel method for ammonia separation using supersonic flow and develops a mathematical model to investigate the condensation phenomenon. The results demonstrate that the L-P nucleation model accurately characterizes the nucleation process of ammonia at low temperatures. Numerical simulations also show that increasing pressure and concentration can enhance ammonia condensation efficiency.
Article
Energy & Fuels
Shiyuan Pan, Xiaodan Shi, Beibei Dong, Jan Skvaril, Haoran Zhang, Yongtu Liang, Hailong Li
Summary: Integrating CO2 capture with biomass-fired combined heat and power (bio-CHP) plants is a promising method for achieving negative emissions. This study develops a reliable data-driven model based on the Transformer architecture to predict the flowrate and CO2 concentration of flue gas in real time. The model validation shows high prediction accuracy, and the potential impact of meteorological parameters on model accuracy is assessed. The results demonstrate that the Transformer model outperforms other models and using near-infrared spectral data as input features improves the prediction accuracy.
