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A Comprehensive Review on Graphene Oxide Based Nanocomposites for Wastewater Treatment

Mohammed M.N., Aljibori H.S.S., Jweeg Muhsin Jaber, Al Oqaili Firas, Abdullah Thamer Adnan, Abdullah Oday I., Meharban Faiza, Rashed Rashed T., Aldulaimi Mustafa, Al-Azawi Khalida

Polish Journal of Chemical Technology

2024

Vol. 26, nr 1

64--79

With the paramount development of industry and agriculture sector, levels of different pollutants like, heavy metal ions, pharmaceuticals, organic dyes, biological waste and other pollutants are becoming serious. The ecosystem and human health suffered greatly from the adverse effects of these pollutants. The disposal of these pollutants has become an urgent issue for the human society. Graphene oxide base nanocomposites have generated an excellent extent of focus as desirable alternatives for the adsorptive elimination of contaminants from aqueous systems owing to their enhanced surface area and multiple functional groups for adsorption. Graphene oxide (GO) as a graphene derivative exhibited superior features as obtainable in a graphene sheet. Moreover, the addition of oxygen functional group at the edges and basal plane of graphene further enhanced the efficiency of the graphene by providing sites for the attachment of different metals on the surface. On the underlying adsorption processes, graphene-based nanocomposites for specific contaminants are designed and currently employed for wastewater treatment. This review presents the ongoing development of GO base nanocomposites and their useful applications, understanding how well graphene-based nanocomposites adsorb pollutants and how that relates to the ways in which pollutants interact with adsorbents is crucial. This study highlights newly developed trends in the creation of graphene oxide based nanocomposites to eliminate different heavy metal ions, dyes, pharmaceuticals, and oils spills from effluent water. The focus is on various graphene oxides nanocomposites application for the removal of different pollutants and regeneration of graphene oxide base nanocomposites after several adsorption cycles. Other challenges and potential directions for designing efficient GO based nanocomposites as adsorbents are also presented along with the problems of current studies.

Effect of the Single-Point Incremental Forming Process Parameters on the Surface Roughness of Aluminum Alloy Al 2024-O Draw Pieces

Habeeb Halah Ali, Jweeg Muhsin Jaber, Khleif Ali Abba

Advances in Science and Technology. Research Journal

2023

Vol. 17, no 6

155--163

The incremental sheet metal forming process is a highly adaptable manufacturing process for producing three-dimensional products without the need for specialized tool typically required in traditional forming processes. This innovative process finds extensive applications in various industries, including aerospace, automobile, and other industrial applications. This study explores the application of the single-point incremental forming (SPIF) process to manufacture truncated pyramids while investigating the impact of specific process parameters on surface roughness. In this study, three parameters wall angle, sheet thickness, and step depth were examined, each at three different levels. A full factorial design (L27) was used to design the experimental work and statistical analysis utilizing Analysis of Variance (ANOVA) was utilized to analyze the collected data and predict the impact of single-point incremental forming process parameters on surface roughness. The tool geometry was a hemispherical end tool with a diameter of (8 mm) and the sheet material was aluminum alloy (Al 2024-O). The computer numerical control (CNC) milling machine was used to move the tool. The optimal average roughness (Ra) value was achieved with a wall angle of 60°, a sheet thickness of 2 mm, and a step depth of 0.2 mm.

An investigation of the suspension characteristics of the line model of the vehicle using the Taguchi method

Stojanovic Nadica, Jweeg Muhsin Jaber, Grujic Ivan, Petrovic Miroslav, Muhsen Sami, Abdullah Oday I.

International Journal of Applied Mechanics and Engineering

2022

Vol. 27, no. 4

170--178

It can be considered that the suspension system is one of the most important systems in the VEHICLE. Where it is responsible for the stability and balance of the vehicle’s structure on the roads and curves to ensure the comfort of passengers. Also, it absorbs the shocks resulting from the unevenness of the road and prevents it from reaching the wheelhouse. The influence of the suspension constructive parameters in order to obtain the smallest level of displacements of the sprung mass has been investigated. The following control parameters are the stiffness of the sprung, unsprung mass, and the damping of the sprung mass. The parameter which affects most displacements of the sprung mass was determined by applying the analysis of variance (ANOVA). The investigation was conducted using MATLAB/SIMULINK software, and a line model of a quarter of the vehicle was created. It was determined that the stiffness of sprung has the most significant influence on the displacement of the sprung-mass, which further affect the vehicle’s comfort.