# A. D. Wiheeb's research while affiliated with Tikrit University and other places

## Publications (35)

Article
Full-text available
Increasing the serious impact of the emissions of carbon dioxide (CO2) on the warming of globe and change of climate make this issue is one of the most important issues facing the world that needs to be resolved urgently. Several techniques have been used to control CO2 emissions. One of the methods that achieved good results was the chemical a...
Article
Full-text available
Recently capturing of Carbon dioxide (CO2) considered as one of the most important issue due to its dangerous effect on the climate change. Absorption technology is the most used technology for CO2 capture. However, this technology has a drawbacks mainly related to the solvent used especially the limiting capacity and the high regeneration energy....
Article
Full-text available
The kinetics reaction of the tertiary amine blend of monoethanolamine (MEA), triethanolamine (TEA), and piperazine (PZ) with carbon dioxide (CO2) considered in a packed bed. The mechanism of reaction and kinetics of this tertiary amine were studied at (298-308) K and 1atm with total blend concentration varied from (4-6) molars. The current experime...
Article
A localized molecular occupancy of CO2 and CH4 mixed molecules on the pore wall of micro porous hydrotalcite-silica inorganic membranes and its correlation with diffusivity, permeability, and selectivity are presented. Maxwell-Stefan model combination with single site Langmuir isotherm is used to describe the transport of CO2 gas molecules through...
Article
Full-text available
Carbon dioxide (CO2) capture has been the most crucial research issue due to the dangerous impact of carbon dioxide emissions on global warming and climate change. In recent decades, a new absorption technology has been used to get rid of carbon dioxide. This procedure is getting tremendous attention being applied to improve CO2 uptake by using nan...
Conference Paper
Wastewater containing medical dyes is one among the foremost essential contamination effects of natural aquatic ecosystems. The current study investigates the optimal operating conditions for removal of dye (Yellow No.6 (C16H10N2Na2O7S2)) from synthetic wastewater. Experiments were conducted on activated carbon (AC) prepared from waste polymer thro...
Article
Increasing carbon dioxide emissions in the environment is a universal matter that needs a decisive resolve so as to moderate the developing risk of climate alter. Numerous studies have been conducted over the closing few decades to solve this issue. In this study, aqueous potassium carbonate (K2CO3) solution promoted by amino acid salts were applie...
Article
Full-text available
Binding organic liquids are a strong base of amidine have been used for CO2 capture. Up to now, there is no known datum on the reaction kinetics of CO2 with 1,5-Diazabicyclo[4.3.0]non-5-ene (DBN). In this paper, Kinetics of reaction between CO2 and DBN/MDEA in 1-Pentanol were performed utilizing the stirred cell reactor with DBN concentration (2 –...
Article
Full-text available
Hydrotalcite material was incorporated to enhance the carbon dioxide (CO2) affinity of the alumina membrane for CO2 separation from different gas mixtures. The crack free mesoporous HT-alumina (~10 µm) porous membranes were successfully synthesized on surface of α-Al2O3 disc support using the sol-gel and dip-coating techniques. The unsupported memb...
Article
The process modeling and optimization of carbon dioxide (CO2) separation from carbon dioxide-methane (CH4) binary gas mixture through hydrotalcite (HT)-silica membrane using statistical design of experiments (DoE) is reported in this study. The effect of three important process variables, pressure difference across the membrane (100-500 kPa), tempe...
Article
Full-text available
Biodiesel produced from vegetable oils is a good alternative clean diesel. The present study was conducted because there are some variations or contradictions in literature on the use of CaO heterogeneous catalyst. In this study, biodiesel was produced from sunflower vegetable oil and methanol in presence of commercial calcium oxide catalyst in bat...
Article
Maxwell-Stefan diffusion with single-site Langmuir isotherm was used to model the flow of gas inside micro pores of HT-Silica membrane. Coupled with Van't Hoff and Arrhenius equations, the diffusivity and energy contributed by the surface affinity and gas kinetics were quantified and evaluated. Results indicate that all of the four gases being stud...
Article
Mitigation of anthropogenic carbon dioxide is needed in order to allow societies to maintain the existing carbon-based infrastructure, while minimizing the effects of carbon dioxide (CO2) on the earth eco-system. A system that consists of pressure swing adsorption and in-situ mineralization unit was introduced to capture carbon dioxide (CO2) from a...
Article
Full-text available
A novel thin microporous composite membrane of a dual-element hydrotalcite-silica was prepared on porous alumina support by sol-gel method. Strong CO2 adsorption on hydrotalcite material inhibited the diffusion of H2 through the membrane and decreased H2 permeances significantly so that CO2 preferentially permeated. The effects of pressure differen...
Article
Oil extract from Saga seeds offers potential uses as valuable chemical feedstock and liquid fuel. In this work, pyrolysis and solvent extraction were employed to extract liquid fuel from Saga seeds. The optimum yield of pyrolytic oil was obtained when pyrolysis temperature and nitrogen flow rate were 571°C and 271 cc/min, respectively. The heating...
Article
The principles of pressure swing adsorption (PSA) for carbon dioxide capture are reviewed. Previous work on PSA, relevant modeling and experimental investigation for specifically carbon dioxide separation are also presented and significant findings highlighted. Simple rules for PSA process design based on analysis of the inherent properties of adso...
Article
Full-text available
A fractal theory employing a box-counting method was used to describe hydrogen gas diffusion into membrane pores in the meso-porosity regime. The diffusion of the gas into the membrane pore network confirmed the existence of fractal structure in the system. Two fractal identities to represent irregularity and roughness of pore surface and tortuosit...
Article
A notable improvement of carbon dioxide (CO2) adsorption in meso and micro-porous membranes was observed when hydrotalcite (HT) was incorporated in the membranes. For carbon dioxide in carbon dioxide - methane (CH4) mixture, HT-silica membrane successfully overcame the upper permeability/selectivity limitation for glassy and polymeric membranes, de...
Article
The different level of carbon dioxide diffusion in microporous hydrotalcite-silica membrane can be explained by the attractive forces between the molecules and the affinitive medium between molecules of different gas species and the molecular weight of the gases. For a molecular sieve membrane that exhibits high affinity for carbon dioxide, the gas...
Article
Hydrotalcite (HT) materials have been known to be able to adsorb $$\hbox {CO}_{2}$$ even at high temperature. However, HT has not been made into a micro-porous membrane because of its meso-porous nature. In order to form a micro-porous HT membrane, silica was selected as a host matrix due to its ability to retain its micro-porosity. In this pape...
Article
The prepared microporous hydrotalcite (HT)–silica membrane was found to exhibit the molecular sieving characteristic of pristine silica material and high [TEX equation: \mathrm{CO}_{2}] adsorption capacity of HT. The combined properties made enhanced [TEX equation: \mathrm{CO}_{2}] permeability and separability from [TEX equation: \mathrm{CH}_{4}]...
Article
Single permeation test reveals that excessively high sintering temperature caused unnecessary bloating and collapse of micropores to form meso- and macropore structures. It also caused reduction in carbon dioxide adsorption capacity as a result of diminishing affinitive hydrotalcite phase in the pore structures. The carbon dioxide permeance was hig...
Article
Natural gas, refinery gas, and coal gas contain acid gases such as hydrogen sulfide (H2S) and carbon dioxide that must be removed from the gas stream due to the toxicity of H2S and to prevent corrosion to piping and production facility caused by the acid gases. In this article, current technologies for the acid gas removal are selected and reviewed...
Article
The characteristic energy of nitrogen adsorption in a meso-porous hydrotalcite at 77 K demonstrates the fractality over wider range of pore sizes including meso and macro-pores. More irregular, wider pore-size distribution exhibits higher adsorption potential than that with more regular, narrower pore-size distribution. The changes in differential...
Article
Full-text available
Hydrotalcite is anion compound capable of exchanging ions; it has the potential as a catalyst and adsorbent for variety of applications. Hydrotalcite can be prepared through several approaches, depending on the specific need and the characteristics of the compound. In this study, hydrotalcite was prepared through combustion method using glycine as...
Article
The removal and recovery of carbon dioxide at high temperature using different hydrotalcite (HT) materials can be enhanced significantly under wet condition. The heat of adsorption for all the three HT samples was higher under wet condition than dry condition. The breakthrough capacity of the gas measured at 300 degrees C was the highest when the a...
Article
The emission of CO2 globally from coal fired power plants is reportedly high, in the order of billion tons of CO2 per year. The amount would be much higher if the other types of fossil fuels used to generate electricity are accounted for. The present treatment or capture of this gas using conventional methods may require that the gas be injected un...
Article
Full-text available
Modeling and simulation of CO2 capture from flue gases of coal fired power plant at high temperature are presented. The work employed a 19% potassium and 1% sodium hydrotalcite adsorbent, for which CO2 capacities in excess 0.84 mol/kg were measured at temperature of 575 K. Elution profiles from a pressure swing adsorption (PSA) unit also enabled an...

## Citations

... CO2 + (Amine blend) HB ↔ (Amine blend)COO + BH + (22) Thereafter, the formed complex suffers a breakdown to give the molecules of the reactants (carbon dioxide and amine) even though a small amount of these substances react with another molecule of amine or water to give ionic products (carbamates). In case, the forward reaction where OH-, H2O and (Amine blendH) are the governing bases the reaction rate can be described by: ...
... up taking of CO2(is one of favorable pathway)to minify the CO2, subtract from scorbutic fuel-release power plants). In the bygone years, numerous manner has been offered for yet-blaze CO2 up take [1][2].( sucking with chemical aqueous solution is the extreme vastly elaborate and handy picking to, considerable-calibrate enforcement).(The(capturing of CO2 with amines or carbonate aquatic solution have obtained spread alertness inter alia absorptive) [3].(Hot potassium carbonate process, recognized as Benfield process, has been hired tardily for curing sour gas influx for plentiful years) [4].(In ...
... A typical wetland that is widely distributed throughout Southeast Asia is tropical peatland, covering 24.8 million ha; about 2.6 Mha can be found in Malaysia (Page et al. 2011). The huge reserves of carbon in tropical peatland were formed over millennia, comprising slightly or partly decayed tree roots, trunks, branches and leaves (Dommain et al. 2011;Saleh and Wiheeb 2019). In Malaysia, tropical peatlands are mainly located within lowland areas and coastal areas with high GWL (Wan Mohtar et al. 2019). ...
... Several technologies were applied to capture CO2 effectively such as: physical and chemical absorption, spread through organic and inorganic membranes, adsorption and cryogenic process [1][2][3]. Commercially, the most method used to capture CO2 is chemical absorption using alkanolamines aqueous solutions [3,4]. Capturing CO2 by alkanolamines requires various alkanolamines aqueous solutions like monoethanolamine (MEA), triethanolamine (TEA), Diethanolamine (DEA) or 2amino-2-methyl-1-propanol (AMP). ...
... The concentration of CO2 in the air is growing by reason of the industrial revolution. Therefore, the significant danger to the climatic is increasing [1,2]. Several technologies were applied to capture CO2 effectively such as: physical and chemical absorption, spread through organic and inorganic membranes, adsorption and cryogenic process [1][2][3]. ...
... 9 The other method that would add value to the waste gas include methane enrichment/separation from CO 2 using physical adsorption such as pressure swing adsorption, mineralisation and membranes, collection and compression of gas into pipelines for processing and sale, generation of electricity or co-generation of heat and electricity using conventional gas turbines, micro turbines, or other gasfired engines, and compression-reinjection of the gas back into an underground reservoir. 5,7,[10][11][12][13][14][15][16][17][18][19] In Samarang oil platform (KNDP-A platform) of Talisman Malaysia Limited (TML), there is a need to increase its current oil production that will result in increase of the associated gas from 21 mmscfd to 31 mmscfd. The current low pressure (LP) gas system on the platform is designed to accommodate up to 21 mmscfd of gas. ...
... According to the observation-based study attempted by Abdel-Rahman et al., the use of commercial CaO as catalyst produced more than 90% of biodiesel yield under methanol to oil ratio of 10:1. 49 Although their reported yield is higher than the yield achieved in the current work, staghorn coral could offer better advantage in terms of economical prospect. ...
... This process is used in industry for the recovery of reactants and valuable gases, the isolation of products, and pollution control [2]. The flow of gases is based on their differences in permeability, which is a function of membrane properties and the nature of gases [3]. Generally, the performance of a membrane is defined by its permeability and selectivity and a good indication is with high values of both achieved for efficiency in commercial applications, but in practicality, there is a trade-off between these parameters. ...
... DEA and MDEA absorption required pressure of 6650 kPa to operate and temperature of 80e108 C to regenerate the solvents which is considerably high for the removal of 456.6 kmol h À1 of CO 2 [2]. In a separate study which was based on a biomass plant to generate electricity at 700 MW capacity [3], PSA reportedly consumed 230 kWh/ton CO 2 , which was less than the MEA adsorption of 390 kWh/ton CO 2 , hybrid oxyfuel membrane/cryogenic process of 280e340 kWh/ton CO 2 and biomass co-firing of 298 kWh/ton CO 2 . The energy consumption by PSA came mainly from the compression load during CO 2 adsorption-desorption process of 0.035 kWh/m 3 CO 2 at 300 C. PSA was also used to concentrate argon to 98.1% purity with recovery of 20.3% to meet the steel production and inert gas welding specification [4]. ...
... 422.50 Total pore volume (cm 3 g − 1 ) 0.20 Average pore radius (Å) 20.13 biomasses [31][32][33][34][35][36]. PKS-AC displayed dense exfoliating folds with coarse surfaces providing edges with uniformed pores and channels, resembling the commercial activated carbon. ...