Adsorption - Science topic

This study researched S275JR MS corrosion sites deactivation in [Na3H(CO3)2] heavy deposits (Gamboru, Borno State, Nigeria), using PPQ as alternative inhibitor, and employed WL, HER, EIS, PDP, SEM and computational techniques. PPQ showed effective MS corrosion mitigation in [Na3H(CO3)2] heavy deposits. IE(%) of 98.8, 99.5, 82.9 and 95.9 %, for grav...

ATK was investigated to ascertain its IE(%) on ASTM A36 MS corrosion in a HCl medium. This was possible through the use of WL, Td, Tm, PDP, EIS and SEM techniques. It was seen from all experimental results that, through adsorption onto the MS surface, ATK mitigated active corrosion sites. CR was seen to decrease with higher inhibitor Ct from 197.6...

The effective inhibition of MS corrosion in H2SO4 by CP and CP + KI was assessed by EIS. SM of MS was studied using SEM and AFM. The rise in Rct and decrease in Cdl, with higher C of CP and CP + KI, confirmed MS CI. IE(%) increased with higher C of CP only and CP + KI (from 10-3 to 10-1 M). CP maximum IE(%) was 93.9%, at 10-1 M. CP + KI, due to I-i...

This paper deals with the decisive mechanisms of thixotropic structural build-up in superplasticized cement-based suspensions related to the PCE molecular structure. We investigate the effect of the side chain length and anionic charge ratio of tailored PCE superplasticizers on thixotropic structural build-up under quantitative consideration of col...

A comprehensive study was conducted to assess the influence of pyrolysis temperature (PyT) on the properties of biochar (BC) and its potential application in anaerobic digestion (AD). PyT is an essential parameter for effectively utilizing BC in full-scale AD, because PyT can develop BC properties that are necessary for improving AD performance thr...

In recent times, graphitic carbon nitride (g-C 3 N 4)-based materials (Ms) have emerged as promising adsorbents and photocatalysts to remove tetracycline (TC) from water. This review article offers a comprehensive outline of recent advances in the use of g-C 3 N 4 @Ms for the adsorption process and photocatalytic degradation of TC in an aqueous sol...

In this study anisotropic solid–liquid interfacial energy, γ, of Mg-Al-Zn system is evaluated based on capillary fluctuation method. To investigate effects of temperature and solute compositions on γ, five simulation cases, Cases I-V, are designed and divided into two group, Group I consist of Cases I-III for evaluation on solute compositions, whil...

Researchers and scientists are paying increasing attention to wastewater dye treatment. Throughout the dyeing and finishing operations, it was discovered that 1% to 15% of the dyes were lost and, as a result, discharged into wastewaters. Consequently, a large quantity of these colors may be observed in the dyeing process effluents. The majority of...

The soil specific surface area (SSA) is an important variable for soil science and geoenvironmental engineering applications, but traditional measurement methods are difficult and time-consuming. Regression models or pedotransfer functions are often used to estimate SSA from other soil properties (e.g., clay content and cation exchange capacity), b...

In this study, rice husk charcoal prepared with KOH and KOH-NaOH as activators were investigated as adsorbents for the removal of methylene blue from aqueous solutions in order to improve the utilisation of rice husk. Firstly, the rice husk carbon was morphologically and chemically characterised using scanning electron microscopy, specific surface...

The employment of metal-organic frameworks in powder form is undesirable from an industrial perspective due to process and safety issues. This work is devoted to evaluating the impact of compression on the textural and structural properties of CPO-27(Ni). For this purpose, CPO-27(Ni) was synthesized under hydrosolvothermal conditions and characteri...

Diffusion is an important process in coalbed methane migration. In addition to diffusion coefficient, the size and shape of coal particles also have influences on methane adsorption and desorption. Thus, the matrix shape factor is a key parameter affecting the methane diffusion rate in coal matrix. The matrix shape factor of intact coal has been st...

Computational catalysis is playing an increasingly significant role in the design of catalysts across a wide range of applications. A common task for many computational methods is the need to accurately compute the adsorption energy for an adsorbate and a catalyst surface of interest. Traditionally, the identification of low-energy adsorbate-surfac...

The experiment about Pre-eliminary test for improve the pore system of the granular activated carbon (coal-based or charcoal) / GAC with the size of approx. 2 mm. The increase of pore system can be achived by KOH as chemical activation agent (Regmi, et al. 2012, Sun, et al. 2015, J. Duran-Valle, et al. 2017; Wazir, et al. 2020; and Kiani et al. 202...

This paper presents the formation of magnesium aluminate spinel using composite particles prepared via electro-static adsorption (ESA). Scanning electron microscopy (SEM) images confirmed the presence of Al 2 O 3 −MgO composite particles. A mixture of Al 2 O 3 and MgO raw materials was also prepared by using the conventional bead-milling method for...

Sulfides poisoning of metallic Ni is an important issue in catalyst deactivation. SO2, similar to H2S and other sulfides, is an impurity presented in reactants or during the regeneration steps. Herein, spin-polarized density functional theory calculations were used to study the adsorption and decomposition of SO2 on a pristine and metal-doped Ni(11...

Ru as a cocatalyst has attracted wide attention as a substitute for Pt precious metal. However, the strong interaction between Ru and H atoms reduces the efficiency of hydrogen (H2) desorption and slows the overall hydrogen evolution reaction (HER) efficiency. How to further improve the efficiency of Ru‐based cocatalyst is challenging. Herein, sing...

In this paper, the reported MOF ([Co(bimip)(H2O)0.5]·0.5H2O) was employed in photocatalytic CO2 reduction, antibacterial, and dye adsorption experiments. The photocatalytic activity of the MOF for CO2 reduction was systematically investigated. The high average CO generation rate of 3421.59 μmol·g−1·h−1 after 12 h confirms the efficient photocatalyt...

Biochar is a potential solution for addressing environmental problems related to excessive nitrogen (N). However, there is still some debate about the absorption and desorption of nitrate nitrogen (NO3−-N). Therefore, this study investigated the NO3−-N adsorption and desorption performance onto biochar and biochar-soil mixture to address this gap....

The increasing recognition of the impact of CO2 emissions as a global concern, directly linked to the rise in global temperature, has raised significant attention. Carbon capture and storage, particularly in association with adsorbents, has occurred as a pivotal approach to address this pressing issue. Large surface area, high porosity, and abundan...

The formation of a MgCO3 shell hampers CO2 capture efficiency in MgO. Our previous studies developed MgO/Mg(OH)2 composites to facilitate CO2 diffusion, improving capture efficiency. However, MgCO3 still formed along the interfaces. To tackle this issue, we engineered the MgO/Mg(OH)2 interfaces by incorporating Cl⁻, SO4²⁻, and PO4³⁻ additives. Nove...

The removal of turbidity is a prime objective in the treatment of seawater, especially in the production of potable water. The water turbidity exists because of the colloidal particles or large-weight molecules that remain in suspension in the untreated solution. This study investigated the performance of a new gel layer for the treatment of highly...

The recent demonstration of the existence of an intimate relationship between the chiral structure of some materials and the spin polarization of electrons transmitted through them, what has been called the chirality-induced spin selectivity (CISS) effect, is sparking interest in many related phenomena. One of the most notorious is the possibility...

Sulfo and carboxyl group-containing polymers and polymer/silica adsorbents poly(acrylonitrile-co-2-acrylamido-2-methylpropane-1-sulfonic acid-co-acrylic acid-co-N,N’-methylene-bis-acrylamide) [poly(AN-co-AMPS-co-AAco-MBA)] and poly(AN-co-AMPS-co-AA-co-MBA)/SiO2 were synthesized by a UV-initiated polymerization or simultaneous UV-initiated polymeriz...

Renewable energy-based electrocatalytic oxidation of organic nucleophiles (e.g.methanol, urea, and amine) are more thermodynamically favourable and, economically attractive to replace conventional pure water electrooxidation in electrolyser to produce hydrogen. However, it is challenging due to the competitive oxygen evolution reaction under a high...

Amorphous metal‐organic frameworks (MOFs) with aperiodic atomic arrangements, featuring high intrinsic activity and rich active sites, have emerged as promising oxygen evolution reaction (OER) catalysts. However, the quantitative structure‐activity relationships (SARs) that determine the OER activity, the key to a rational catalyst design, remain u...

The calcium-barium (Ca–Ba) composite adsorbents based on CO2 storage material (CO2SM, the white solid material formed by the absorption of carbon dioxide in a binary hybrid system of tetraethylene glycol and 1,3-propylene diamine) for CO2 adsorption were systematically investigated, including the synthesis conditions of adsorbent precursors and ads...

The effect of barley seed extracts on the corrosion of carbon steel in 1M hydrochloric acid at different temperatures was investigated from the perspective of their potential use as green inhibitors in the cleaning and descaling processes in heat exchangers. A 50% ethanol/water (vol) solution was used for extraction. Two extraction methods were use...

The release of endogenous phosphorus (P) from sediments is the main cause of lake eutrophication, even after the successful control of exogenous P. Among others, the release of iron-bound P is a major source of endogenous P, and it is necessary to reduce the P concentration by enhancing iron–phosphorus binding. Iron (Fe)-modified biochar adsorption...

In this paper, snail shell powder was used an adsorbent for safranine dye due to its low cost, high efficiency and high adsorption capacity. Experiments were conducted at a temperature of 298 K to find out the effect of pH, concentration, weight, ionic strength and equilibrium time. Also, the best conditions for the adsorption of Safranin dye were...

Single-atom catalysts (SACs) have well-defined active sites, making them of potential interest for organic synthesis1–4. However, the architecture of these mononuclear metal species stabilized on solid supports may not be optimal for catalysing complex molecular transformations owing to restricted spatial environment and electronic quantum states5,...

Electric double-layer supercapacitors (EDLCs) have attracted much attention in the energy storage field due to their advantages such as high output power, long service life, safety and high efficiency. However, their low energy density limits their application. Aiming at the problem of the low energy density of EDLCs, improving quantum capacitance...

Citation: AlShamaileh, E.; Altwaiq, A.M.; Al-Mobydeen, A.; Hamadneh, I.; Al-Saqarat, B.S.; Hamaideh, A.; Moosa, I.S. The Corrosion Inhibition of Montmorillonite Nanoclay for Steel in Acidic Solution. Materials 2023, 16, 6291. https://doi. Abstract: The aim of this research is to study the anticorrosive behavior of a coating consisting of modified m...

Direct ammonia protonic ceramic fuel cells (PCFCs) are highly efficient energy conversion devices since ammonia as a carbon‐neutral hydrogen‐rich carrier shows great potential for storage and long‐distance transportation when compared with hydrogen fuel. However, traditional Ni‐based anodes readily suffer from severe structural destruction and dram...

The initial stages of oxidation of 9Cr steel in CO2, O2, CO2–O2 and CO2–O2–H2O is studied by gas phase analysis (GPA) at 550 °C using ¹³C16,16O2, 18,18O2 and ²H2¹⁶O isotopic molecules in order to discriminate the reactions of all gas molecules. Protective and non-protective oxide scales are formed on 9Cr steel depending on the exact composition of...

The study is concerned with the adsorption of toluene from real wastewater using granular beads of activated carbon. The adsorbent was analyzed before and after the process using Scanning Electron Microscope analysis to characterize its surface characteristics. The adsorption parameters including solution pH, contact time, dosage of adsorbent, temp...

Since surface contaminants can make optical components such as fused silica highly susceptible to damage, how to maintain the cleanliness of fused silica is an effective way to improve the laser damage threshold. In this study, molecular dynamics techniques were employed to investigate the effect of surface roughness of fused silica on the adsorpti...

This paper introduces a new approach to controlling Pressure Swing Adsorption (PSA) using a neural network controller based on a Model Predictive Control (MPC) process. We use a Hammerstein–Wiener (HW) model representing the real PSA process data. Then, we design an MPC-controlled model based on the HW model to maintain the bioethanol purity near 9...

In this study, we propose two advanced processes, i.e., advanced syngas-to-methanol (AS2M) and direct CO2-to-methanol (DC2M) processes, for methanol production using waste CO2 and renewable H2 as feedstock. The AS2M process produces methanol from syngas after converting CO2 to CO via reverse water-gas shift and separating CO from a mixture through...

Porous carbon is an emerging material for the capture of CO2 from point sources of emissions due to its high structural, mechanical, and chemical stability, along with reusability advantages. Currently, research efforts are mainly focused on high- or medium-pressure adsorption, rather than low-pressure or DAC (direct air capture) conditions. Highly...

Eco-friendly corrosion inhibitor derived from coumarin namely3-acetamidocoumarin was synthesized by reaction of salicylaldehyde and aceturic acid. The chemical structure of 3-acetamidocoumarin had been elucidation some spectroscopic techniques (Fourier transform infrared (FT-IR) and proton Nuclear magnetic resonance (NMR)) and elemental micro analy...

This research study examined how the use of dimethylformamide (DMF) as an inhibitor affects the propylene polymerization process when using a Ziegler-Natta catalyst. Several experiments were carried out using TiCl 4 /MgCl 2 as a catalyst, aluminum trialkyl as a cocatalyst, and different amounts of DMF. Then, we analyzed how DMF influences other asp...

To clarify the Ni species of NiO/SiO2-Al2O3 catalysts that are active for ethylene oligomerization, 18 types of NiO/SiO2-Al2O3 were prepared using three Ni-loading methods (i.e., ion-exchange, impregnation, and homogeneous precipitation), with different Ni-loadings (1–20 wt%), and examined with respect to their structure and catalytic activity for...

Although wastewater-based surveillance (WBS) is an efficient community-wide surveillance tool, its implementation for pathogen surveillance remains limited by ineffective sample treatment procedures, as the complex composition of wastewater often interferes with biomarker recovery. Moreover, current sampling protocols based on grab samples are susc...

Fusarium is a genus of fungi found throughout the world. It includes many pathogenic species that produce toxins of agricultural importance. These fungi are also found in buildings and the toxins they spread can be harmful to humans. Distinguishing Fusarium species can be important for selecting effective preventive measures against their spread. A...

The pore structure of coal plays a key role in controlling the storage and migration of CH 4 /N 2 . The pore structure of coal is an important indicator to measure the gas extraction capability and the gas displacement effect of N 2 injection. The deformation characteristic of coal during adsorption–desorption of CH 4 /N 2 is an important factor af...

The photocatalytic conversion of CO 2 into solar‐powered fuels is viewed as a forward‐looking strategy to address energy scarcity and global warming. This work demonstrated the selective photoreduction of CO 2 to CO using ultrathin Bi 12 O 17 Cl 2 nanosheets decorated with hydrothermally synthesized bismuth clusters and oxygen vacancies (OVs). The...

Antibiotics pollution is a growing environmental issue, as high amounts of these compounds are found in soil, water and sediments. This work studies the adsorption/desorption of the macrolide antibiotic clarithromycin (CLA) for 17 agricultural soils with different edaphic characteristics. The research was carried out using batch-type experiments, w...

Designing Sb/carbon composite is an effective strategy to enhance the cycle stability and rate capability of Sb anodes for sodium ion batteries. However, the introduction of carbon often leads to a loss in specific capacity and initial Coulombic efficiency (ICE). In this work, a new perspective is adopted by focusing on improving the “sloping capac...

Membrane technology can play a suitable role in removing pharmaceutical active compounds since it requires low energy and simple operation. Even though membrane technology has progressed for wastewater applications nowadays, modifying membranes to achieve the strong desired membrane performance is still needed. Thus, this study overviews a comprehe...

While extensive efforts have been made over the past two decades to understand how cork becomes contaminated by 2,4,6-trichloroanisole (TCA), the nature of its bond to cork remains unclear. A deeper understanding of this interaction is crucial in designing processes to effectively remove TCA from cork stoppers. This study presents an investigation...

In this article for the first time the quantum calculations of 3-methyl-4-oxoimidazo[5,1-d][1,2,3,5]tetrazine-8-carboxamide (Temozolomide) in HCM-Cellulose Substrate are evaluated using the B3LYP/6-31G level of theory. The non-bonded interaction effects of the molecule Temozolomide, HCM-Cellulose on the electronic properties, chemical shift tensors...

In this article, the differential thermal adsorption, adsorption isotherm, integral entropy, and thermokinetics results and their analysis of the polar molecule H2O vapor selected as adsorbate in the adsorbents obtained by the traditional method of thermal and water vapor activation of grape seed waste under the influence of temperature and their a...

The surface properties of aqueous dispersions of worm-like fibril aggregates of bovine serum albumin (BSA) differ from those of the adsorption layers of the native protein. The dispersions of BSA fibrils are characterized by slower changes of the surface tension and dynamic surface elasticity and also have different steady-state values of the surfa...

The effect of the partial substitution of Mo with W in Co3Mo3N and Ni2Mo3N on ammonia synthesis activity and lattice nitrogen reactivity has been investigated. This is of interest as the coordination environment of lattice N is changed by this process. When tungsten was introduced into the metal nitrides by substitution of Mo atoms, the catalytic p...

Realizing compact dendrite‐free zinc (Zn) plating is crucial to avoiding premature battery failure caused by internal short‐circuits, which is highly determined by the interface electric field (ψi) distribution. Herein, a concept of “potential compensating” is shown on Zn anodes to stimulate its self‐smoothing deposition behavior for durable batter...

The efficacy of ultrasonic technology for the uptake of sodium naproxen (SN) onto oak-based activated carbon (OAC) was examined in this study. SN is a widely used medication around the globe. The investigation of the uptake of SN by OAC involved the analysis of Fourier-transform infrared spectroscopy, X-ray diffraction, and scanning electron micros...

The inhibition behavior of the promising eco-friendly inhibitor 8-hydroxyquinoline (8HQ) in two concentrations of sodium chloride solution was studied by hydrogen evolution, scanning electron microscope (SEM), three-dimensional morphology, electrochemical testing, and computational calculations. The results indicated that the 8HQ inhibitor showed s...

Using physical activation, a new composite adsorbent was prepared by modifying low-cost local adsorbent. This low-cost local adsorbent was also prepared from activating sludge, bentonite, and limestone (SBL). In comparison to the low-cost LCL, the adsorption capacity of the new composite adsorbent was improved. This was measured in terms of its abi...

The powdered sorbents were applied in a batch system under "static" conditions and showed a much higher adsorption capacity than the granular one. These type of sorbents are more suitable for small quantities of water with a high concentration of arsenic. The possibilities of using all the tested methods for arsenic removal have been evaluated, and...

The process-based evaluation of adsorbents is considered the most foolproof method with respect to a particular application, as it provides data about the separation effectiveness in authentic operating conditions. This paper presents empirically obtained performance results of the kinetically-controlled air separation on multiple carbon molecular...

Fluoride contamination in groundwater may pose serious health issues. Among all the technologies, adsorption is considered to be highly efficient and is widely used for remediation in environment. In the present study, copper oxide nanoparticles (CuO) were synthesized by chemical precipitation method and used as adsorbent. The study intends to exam...