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Enhanced termination of zinc and cadmium ions from wastewater employing plain and chitosan-modified mxenes:synthesis,characterization,and adsorption performance

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Green Chemical Engineering 2024年第3期5卷 339-347页

作者： Njood R.Azeez Suhaib S.Salih mohammed kadhom Harith N.mohammed Tushar K.Ghosh Department of Chemical Engineering College of EngineeringUniversity of TikritTikrit34001Iraq Department of Environmental Science College of Energy and Environmental ScienceAl-Karkh University of ScienceBaghdad10081Iraq Department of Nuclear Science&Engineering Institute University of Missouri-Columbia416 S.Sixth StreetE 2434 Lafferre HallColumbiaMO65211United States

Zinc and cadmium pollutants cause a significant environmental effect that cannot be *** to their considerable amount in an aqueous environment,industries are seeking suitable adsorbents that are environmentally friendly and inexpensive for removing metals from wastewater before disposing of them in surface *** research employed original MXene(MX)and chitosan-modified MXene(CSMX)to extract zinc(Zn(Ⅱ))and cadmium(Cd(Ⅱ))metal ions from water-based *** composite material produced was analyzed using techniques such as X-ray Diffraction(XRD),Scanning Electron Microscopy(SEM),Fourier Transform Infrared Spectroscopy(FTIR),and Brunauer-Emmett-Teller(BET).The effects of contact duration,p H of the solution,and initial concentration of metal ions on the adsorption process of Zn(Ⅱ)and Cd(Ⅱ)onto both MX and CSMX composites were *** and prepared CSMX composite presented a high adsorption capacity for both studied heavy metals,which were 91.55 and 73.82 mg/g for Zn(Ⅱ)and Cd(Ⅱ)onto MX,106.84 and 93.07 mg/g for Cd(Ⅱ)and Zn(Ⅱ)onto CSMX composite,***,the maximum competitive adsorption capacities for Zn(Ⅱ)onto MX and CSMX composites are 77.29 and 93.47 mg/g,and for are Cd(Ⅱ)60.30 and 79.66 mg/g,***,the removal capacities for both single and competitive metal ions were superior to CSMX ***,the adsorption capacities after five successive regeneration sequences were only dropped by 13.2%for Zn(Ⅱ)and 17.4%for Cd(Ⅱ)onto the CSMX composite compared to the first *** results confirm that both metals could be efficiently terminated from wastewater,which makes the prepared CSMX composite a favorable candidate adsorbent in practical applications.

关键词： Adsorption Chitosan MXene Zn(Ⅱ) Cd(Ⅱ) Wastewater

Advancements in adsorption and photodegradation technologies for Rhodamine B dye wastewater treatment:fundamentals,applications,and future directions

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Green Chemical Engineering 2024年第4期5卷 440-460页

作者： Peter Olusakin Oladoye mohammed kadhom Idrees Khan Kosar Hikmat Hama Aziz Yakubu Adekunle Alli Department of Chemistry and Biochemistry Florida International University11200 SW 8th StMiamiFL33199USA Analytical/Environmental Chemistry Unit Department of Pure and Applied ChemistryLadoke Akintola University of TechnologyP.M.B4000Nigeria Department of Environmental Science College of Energy and Environmental ScienceAlkarkh University of ScienceBaghdad10081Iraq School of Chemistry and Chemical Engineering Northwestern Polytechnical UniversityXi'an710129China Department of Chemistry College of ScienceUniversity of SulaimaniQlyasan StreetSulaymaniyah46001Kurdistan RegionIraq Department of Medical Laboratory of Science College of Health SciencesUniversity of Human DevelopmentSulaymaniyah46001Kurdistan RegionIraq CNRS LCC(Laboratoire de Chimie de Coordination)UPR8241Universite de ToulouseUPSINPTToulouseCedex 4F-31077France

Organic dye pollutants present in wastewater pose a significant global *** pollutants,the synthetic dye Rhodamine B(RB)stands out due to its non-biodegradable nature and associated neurotoxic,carcinogenic,and respiratory irritant *** research has been conducted on the efficacy of adsorption and photodegradation techniques for the removal of RB from *** adsorption and advanced oxidation processes(AOPs)have gained considerable attention for their effectiveness in recent years,the underlying behaviors and mechanisms of these technologies remain incompletely ***,a comprehensive of recent research progress in this domain is imperative to clarify the basics and present the up-to-date *** review provides an in-depth exploration of the fundamentals,advancements,and future trajectories of RB wastewater treatment technologies,mainly encompassing adsorption and *** work starts with a general introduction of outlining the sources,toxicity,and diverse applicable removal ***,it thoroughly examines crucial techniques within non-photochemical,photochemical,and adsorption technologies,such as UV light assisted AOP,catalyst assisted AOP,ozonation,Fenton system,electrochemical AOP,and adsorption *** primary objective is to furnish a broad overview of these techniques,elucidating their effectiveness,limitations,and *** this,the review encapsulates state-of-theart computational simulations pertaining to RB adsorption and interactions with clays and other ***,it delves into column adsorption of RB dye,and elucidates various influencing factors,including bed height,feed concentration,pollutant(RB)feeding or flow rate,and column *** panoramic review aims to provide valuable insights into suitable techniques,research gaps,and the applicability of nonphotochemical,photochemical,and adsorption technologies in the treatment of

关键词： Rhodamine B Wastewater treatment Photodegradation Column adsorption Dye removal Advanced oxidation processes

Enhanced termination of zinc and cadmium ions from wastewater employing plain and chitosan-modified mxenes: synthesis, characterization,and adsorption performance

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Green Chemical Engineering 2024年第3期 339-347页

作者： Njood R.Azeez Suhaib S.Salih mohammed kadhom Harith N.mohammed Tushar K.Ghosh Department of Chemical Engineering College of Engineering University of Tikrit Department of Environmental Science College of Energy and Environmental Science Al-Karkh University of Science Department of Nuclear Science & Engineering Institute University of Missouri-Columbia

Zinc and cadmium pollutants cause a significant environmental effect that cannot be ignored. Due to their considerable amount in an aqueous environment, industries are seeking suitable adsorbents that are environmentally friendly and inexpensive for removing metals from wastewater before disposing of them in surface waters. This research employed original MXene(MX) and chitosan-modified MXene(CSMX) to extract zinc(Zn(Ⅱ)) and cadmium(Cd(Ⅱ)) metal ions from water-based solutions. The composite material produced was analyzed using techniques such as X-ray Diffraction(XRD), Scanning Electron Microscopy(SEM), Fourier Transform Infrared Spectroscopy(FTIR), and Brunauer-Emmett-Teller(BET). The effects of contact duration, p H of the solution, and initial concentration of metal ions on the adsorption process of Zn(Ⅱ) and Cd(Ⅱ) onto both MX and CSMX composites were investigated. MX and prepared CSMX composite presented a high adsorption capacity for both studied heavy metals, which were 91.55 and 73.82 mg/g for Zn(Ⅱ) and Cd(Ⅱ) onto MX, 106.84 and 93.07 mg/g for Cd(Ⅱ) and Zn(Ⅱ) onto CSMX composite, respectively. Furthermore, the maximum competitive adsorption capacities for Zn(Ⅱ) onto MX and CSMX composites are 77.29 and 93.47 mg/g, and for are Cd(Ⅱ)60.30 and 79.66 mg/g, respectively. Hence, the removal capacities for both single and competitive metal ions were superior to CSMX composite. However, the adsorption capacities after five successive regeneration sequences were only dropped by 13.2% for Zn(Ⅱ) and 17.4% for Cd(Ⅱ) onto the CSMX composite compared to the first cycle. These results confirm that both metals could be efficiently terminated from wastewater, which makes the prepared CSMX composite a favorable candidate adsorbent in practical applications.

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Decoding molecular mechanisms:brain aging and Alzheimer's disease

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Neural Regeneration Research 2025年第8期20卷 2279-2299页

作者： Mahnoor Hayat Rafay Ali Syed Hammad Qaiser Mohammad Uzair Khalid Al-Regaiey Roaa Khallaf Lubna Abdullah mohammed Albassam Imdad Kaleem Xueyi Wang Ran Wang Mehwish SBhatti Shahid Bashir Atta-ur-Rahman School of Applied Biosciences(ASAB) National University of Sciences and Technology(NUST)IslamabadPakistan Department of Biotechnology Quaid-i-Azam UniversityIslamabadPakistan Department of Biological Sciences Faculty of Basic&Applied SciencesInternational Islamic University Islamabad(IIUI)IslamabadPakistan Department of Bioengineering King Fahd University of Petroleum and MineralsDhahranSaudi Arabia Department of Physiology College of MedicineKing Saud UniversityRiyadhSaudi Arabia Department of Neurology Neuroscience CenterKing Fahad Specialist HospitalDammamSaudi Arabia Department of Mental Health Neuroscience CenterKing Fahad Specialist HospitalDammamSaudi Arabia Department of Biosciences Commission on Science and Technology for Sustainable Development in the South(COMSATS University)IslamabadPakistan Department of Psychiatry The First Hospital of Hebei Medical UniversityShijiazhuangHebei ProvinceChina Mental Health Institute of Hebei Medical University ShijiazhuangHebei ProvinceChina Department of Neurobiology and Behavior University of CaliforniaIrvineCAUSA Neuroscience Center King Fahad Specialist Hospital DammamDammamSaudi Arabia

The complex morphological,anatomical,physiological,and chemical mechanisms within the aging brain have been the hot topic of research for *** aging process alters the brain structure that affects functions and cognitions,but the worsening of such processes contributes to the pathogenesis of neurodegenerative disorders,such as Alzheimer's *** these observable,mild morphological shifts,significant functional modifications in neurotransmission and neuronal activity critically influence the aging *** these changes is important for maintaining cognitive health,especially given the increasing prevalence of age-related conditions that affect *** review aims to explore the age-induced changes in brain plasticity and molecular processes,differentiating normal aging from the pathogenesis of Alzheimer's disease,thereby providing insights into predicting the risk of dementia,particularly Alzheimer's disease.

关键词： Alzheimer’s disease brain aging cognitive health dementia molecular mechanisms neuronal activity neuroplasticity neurotransmission

Deflection behavior of a prestressed concrete beam reinforced with carbon fibers at elevated temperatures

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Frontiers of Structural and Civil Engineering 2019年第1期13卷 81-91页

作者： mohammed FARUQI mohammed Sheroz KHAN Department of Civil and Architectural Engineering Texas A&M University--KingsvilleTexasUSA

Fiber reinforced polymer(FRP) have unique advantages like high strength to weight ratio,excellent corrosion resistance,improving deformability and cost *** advantages have gained wide acceptance in civil engineering *** tendons for prestressing applications are emerging as one of the most promising technologies in the civil engineering ***,the behavior of such members under the influence of elevated temperatures is still *** knowledge and application of this could lead to a cost effective and practical considerations in fire safety ***,this study examines the deflection behavior of the carbon fiber reinforced polymer(CFRP) prestressed concrete beam at elevated *** this article,an analytical model is developed which integrates the temperature dependent changes of effective modulus of FRP in predicting the deflection behavior of CFRP prestressed concrete beams within the range of practical *** model is compared with a finite element mode (FEM) of a simply supported concrete beam prestressed with CFRP subjected to practical elevated *** addition,comparison is also made with an indirect reference to the real behavior of the *** results of the model correlated reasonably with the finite element model and the real ***,a practical application is provided.

关键词： FRP CFRP concrete elevated temperatures deflections prestress

MULTIDIMENSIONAL RELAXATION APPROXIMATIONS FOR HYPERBOLIC SYSTEMS OF CONSERVATION LAWS

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Journal of Computational Mathematics 2007年第4期25卷 440-457页

作者： mohammed Seaid UniversitSt Kaiserslautern Fachbereich Mathematik 67663 Kaiserslautern Germany

We construct and implement a non-oscillatory relaxation scheme for multidimensional hyperbolic systems of conservation laws. The method transforms the nonlinear hyperbolic system to a semilinear model with a relaxation source term and linear characteristics which can be solved numerically without using either Riemann solver or linear iterations. To discretize the relaxation system we consider a high-resolution reconstruction in space and a TVD Runge-Kutta time integration. Detailed formulation of the scheme is given for problems in three space dimensions and numerical experiments are implemented in both scalar and system cases to show the effectiveness of the method.

关键词： Multidimensional hyperbolic systems Relaxation methods Non-oscillatory reconstructions Asymptotic-preserving schemes.

Recent advances on flexible electrodes for Na-ion batteries and Li–S batteries

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Journal of Energy Chemistry 2019年第5期28卷 15-44页

作者： mohammed-Ibrahim Jamesh Department of Physics and Materials Science City University of Hong Kong Applied and Plasma Physics School of Physics (A28) University of Sydney CSIR-Central Electrochemical Research Institute-Chennai Unit CSIR Madras Complex

Flexible energy storage devices are essential for emerging flexible electronics. The existing state-of-the-art Li-ion batteries are slowly reaching their limitation in terms of cost and energy density. Hence, flexible Na-ion batteries (SIBs) with abundanee Na resources and Li-S batteries with high energy density become the alternative for the Li-ion batteries in future. This review summarizes the recent advances in the development of flexible electrode materials for SIBs with metallic matrix and carb on aceous matrix such as carb on nano-tubes, carbon nano-fiber, graphene, carbon cloth, carbon fiber cloth, and cotton textiles. Then, the potential prototype flexible full SIBs are discussed. Further, the recent progress in the development of flexible electrode materials for Li-S batteries based on carb on nano-fiber, carb on nano-tubes, graphene, and cotton textiles is reviewed. Moreover, the design strategies of suitable interlayer, separator, electrolyte, and electrodes to prevent the dissolution and shuttle effect of polysulfides in flexible Li-S batteries are provided. Finally some prospective investigation trends towards future research of flexible SIBs and Li-S batteries are also proposed and discussed. The scientific and engineering knowledge gained on flexible SIBs and Li-S batteries provides conceivable development for practical application in near future.

关键词： Na-ion batteries Lithium-sulfur batteries Flexible Free-standing High performance energy storage Long cycle life

Adaptive neuro fuzzy inference system for predicting sub-daily Zenith Wet Delay

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Geodesy and Geodynamics 2022年第4期13卷 352-362页

作者： Jareer mohammed Civil Engineering Department Wasit UniversityKutIraq

In recent years,the focus of tropospheric studies has evolved to GNSS meteorology and weather *** Zenith Wet Delay(ZWD),which might be assembled to the Integrated Water Vapour(IWV),is an essential component of the tropospheric *** predicted the ZWD with the required level of accuracy is crucial for weather *** scope of this study is to use the adaptive neural fuzzy inference system(ANFIS)to predict the ZWD for the following six-hour epoch based exclusively on the present the ZWD *** was developed and verified using 505 geographically and internationally distributed stations which were used for training and testing from 2008 to *** was assessed based on two ***,the correlation coefficient(R)values were found to be more than 0.8 in 98%of the stations,including those with highest and lowest latitudes,and the remaining 2% of stations located in coastal ***,the Root Mean Square Error(RMSE)values of the differences between the pre-dicted and the actual ZWD were considered to be the more important finding of the *** is,99.21% of the 505 stations had the RMSE values equal to or less than 3 cm,with only 4 stations having the RMSE values higher(0.2 mm)than 3 *** the results of this study achieved the required degree of ac-curacy from the predicted ZWD to be utilized in weather forecasting,they may also be beneficial for GNSS meteorology.

关键词： ANFIS ZWD Weather forecasting GNSS meteorology

Modeling the capability of penetrating a jammed crowd to eliminate freezing transition

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Chinese Physics B 2016年第5期25卷 65-72页

作者： mohammed Mahmod Shuaib College of Shari’a and Islamic Studies in Al Ahsaa Department of Computer Sciences Al-Imam Muhammad Ibn Saud Islamic University (IMSIU)

Frozen state from jammed state is one of the most interesting aspects produced when simulating the multidirectional pedestrian flow of high density crowds. Cases of real life situations for such a phenomenon are not exhaustively *** observations in the Hajj crowd show that freezing transition does not occur very often. On the contrary, penetrating a jammed crowd is a common aspect. We believe the kindness of pedestrians facing others whose walking is blocked is a main factor in eliminating the frozen state as well as in relieving the jammed state. We refine the social force model by incorporating a new social force to enable the simulated pedestrians to mimic the real behavior observed in the Hajj *** are performed to validate the work qualitatively.

关键词： multidirectional flow jamming transition pedestrian behavior social force