Abdukarem Amhamed

• Chemical Engineering
• Research Director at Qatar Environment and Energy Research Institute

This study addresses the critical challenge of reducing greenhouse gas emissions in the aviation sector by focusing on post-combustion methane (CH₄) and carbon dioxide (CO₂) capture as a step toward the development of Low Carbon Aviation Fuels (LCAF). A novel combustion process was developed and evaluated, utilizing an innovative approach that inte...

We investigate and test the effectiveness of a novel window windcatcher device (WWC), as a means of improving natural ventilation in buildings. Using ANSYS CFX, the performance of the window-windcatcher is compared to a control case (no window-windcatcher), in three different geographic locations (Cardiff, Doha and Amman) which are representative o...

The Kalina cycle is well-known for its innovative energy conversion optimization, utilizing various working fluids such as butane, freon, isobutane, and pentane to evaluate efficiency and performance. This research explores the interaction of fluids in the Kalina cycle to enhance heat recovery by utilizing heat from road infrastructure. Our researc...

Investing in Sustainable Aviation Fuel (SAF) is crucial for reducing the aviation industry's carbon footprint and mitigating climate change. As global air travel demand increases, SAF offers a viable solution to significantly lower greenhouse gas emissions and enhance energy security, ensuring a more sustainable future for aviation. Additionally, c...

The Kalina cycle is well-known for its innovative energy conversion optimization, utilizing various working fluids such as butane, freon, isobutane, and pentane to evaluate efficiency and performance. This research explores the interaction of fluids in the Kalina cycle to enhance heat recovery by utilizing heat from road infrastructure. Our researc...

This study introduces comprehensive research on the prediction of the carbon dioxide (CO 2) uptake from the biomass-waste derived-porous carbons (BWDPCs), by using scientometrics and model agnostic multi-layered explainable artificial intelligence (XAI) techniques. It aims to identify the main characteristics, and trends that are specific to this d...

Direct air capture (DAC) technology faces challenges due to energy-intensive processes and limited CO2 capture capacity under atmospheric concentration. Utilizing adsorption techniques with solid sorbents offers a sustainable solution. This study investigates the performance, efficiency, and regeneration energy of various amines (TEPA, low and high...

This study assesses global efforts to enhance existing ammonia plants and explores the feasibility of integrating heat exchangers at different stages of ammonia production. Based on this, the researchers analyzed two heat exchange systems, namely the NH3-H2 shell and tube heat exchanger and the H2O-to-H2O helical heat exchanger, in order to investi...

This research focuses on enhancing natural ventilation in multifamily residential buildings to improve air quality and minimize reliance on mechanical ventilation, thereby reducing energy consumption. The study pioneers the integration of passive pipe systems within structural floor slabs and building envelopes, aiming to overcome the inherent chal...

The efficient dirubidium cobalt bis(dihydrogendiphosphate) dihydrate compound is successfully synthesized in a solution and used as a reactive sorbent for the CO2 and CH4 gases adsorption and storage. A crystal of this Rb2Co(H2P2O7)2·2H2O compound has been isolated and characterized by single X-ray diffraction analysis and was found to crystallize...

Renewable energy sources are gaining prominence as petroleum-based fuels deplete, necessitating alternative options. The aviation industry, facing increasing demand for both conventional and alternative fuels, is exploring blue hydrogen as a cleaner substitute for traditional jet fuels. This paper evaluates recent advancements in blue hydrogen prod...

A simple approach was used to synthesize a catalyst based on colloidal NiCo with rGO support. The catalyst was uniformly deposited on acid-treated Sn foil using drop-casting method. The prepared NiCo@rGO catalyst was characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron mi-croscopy (TEM), and X-ray p...

Heat recovery from roads is a promising technology to address the urban heat island effect. This review paper aims to provide a comprehensive analysis of the current state and future directions of heat recovery from roads to address the urban heat island effect while generating renewable energy. The study covers various aspects such as theoretical...

This research study utilizes Computational Fluid Dynamics (CFD) to investigate the impact of adjusting Free Flow Paths (FFPs) in office space with the aim of minimizing infection risks. The study examines five design scenarios; Double 2m, Triple 2m Single 4m, 4m and Triple 6m, in comparison to the base case (Single 2m). The evaluations conducted in...

Direct air capture (DAC) technology is still facing some challenges that need to be addressed before the technology can be widely deployed. One major challenge is the high overall system energy requirement, and it is the main bottleneck in DAC commercialization. This study aims to unlock the potential of integrating DAC with Heat Ventilation and Ai...

The food security challenge continues to be one of the main issues that currently face the world despite improved economic development in many countries. The challenge is particularly unique in one of the world’s arid regions, the Gulf Cooperation Council (GCC). This paper analyses the food security strategies of Qatar (one of the six countries tha...

To promote the adoption of Direct Air Capture (DAC) systems, this paper proposes and tests a photovoltaic-powered DAC system in a generic residential building located in Qatar. The proposed DAC system can efficiently reduce CO2 concentration in a living space, thus providing an incentive to individuals to adopt it. The ventilation performance of th...

Window-windcatchers, a passive ventilation method, have been shown to improve ventilation and enhance thermal comfort. Preliminary characterization of a novel window-windcatcher has been undertaken in a previous work, but no relationship had been identified between the actual ventilation rate (Q act), the wind velocity (V Tw) and crucial design par...

This study analyzes the impact of electricity prices on the development of the agriculture sector in Qatar, using annual data from 2003 to 2019. Its findings contribute to addressing a gap in current literature and offer valuable perspectives on the sector’s obstacles and potential prospects. An extended Cobb-Douglas production function was employe...

The release of carbon dioxide (CO2) into the atmosphere is threatening the environment and ecosystems, resulting in major challenges to sustainable development for modern industry. In this context, CO2 electrochemical reduction (CO2 ECR) is one of the most promising technologies to mitigate the effects of high CO2 content in the atmosphere. Electro...

Due to growing concerns about carbon emissions, using zero-carbon fuels has become an interesting alternative to overcome this problem. The NH3(70%)-H 2 (30%) fuel blend is an innovative fuel example that has the potential to replace conventional hydrocarbon fuels. Studies on the NH3(70%)-H2(30%) fuel blend have shown its superior combustion perfor...

The increasing concentration of carbon dioxide (CO2) in the atmosphere has compelled researchers and policymakers to seek urgent solutions to address the current global climate change challenges. In order to keep the global mean temperature at approximately 1.5 °C above the preindustrial era, the world needs increased deployment of negative emissio...

Finding a balance between the capacity for production and the rising demand for food is the first step toward achieving food security. To achieve sustainable development on a national scale, decision-makers must use an energy, water, and food nexus approach that considers the relationships and interactions among these three resources as well as the...

The increasing concentration of carbon dioxide (CO2) in the atmosphere has compelled researchers and policymakers to seek urgent solutions to address the current global climate change challenges. In order to keep the global mean temperature at approximately 1.5°C above the preindustrial era, the world needs increased deployment of negative emission...

Previous studies on window-windcatchers have shown their effectiveness in capturing the prevailing wind and redirecting it into a building, increasing the actual-to-required ventilation ratio by 9%, above what is required by the American Society of Heating, Refrigerating, and AirConditioning Engineers (ASHRAE). However, the effect of implementing t...

This research investigates the most modern approaches to water treatment and recovery in power plants because of the scarcity of water sources and the significance of those sources in enhancing the performance of power-generating cycles. Gas turbines, which use mixes of air and water as the working fluid, provide superior efficiency, high specific...

This paper aims to develop a comprehensive conceptual framework of the customer value proposition of formic acid as an actual outcome of carbon capture and utilization (CCU) to support clean production and environmental sustainability worldwide. This study included different phases. The first phase was an extensive reading of the literature, follow...

As the concentration of carbon dioxide (CO2) in the atmosphere continues to rise, and the reality of global warming challenges hits the world, global research societies are developing innovative technologies to address climate change challenges brought about by high atmospheric concentration of CO2. One of such challenges is the direct removal of C...

Recent evidence available in the literature has highlighted that the high-energy consumption rate associated with air conditioning leads to the undesired "overcooling" condition in arid-climate regions. To this end, this study quantified the effects of increasing the cooling setpoint temperature on reducing energy consumption and CO2 emissions to m...

The term “separation techniques” refers to a group of analytical techniques used to separate the components of a homogenous mixture that are further detected, identified and quantitatively determined. Though separation can involve distillation and evaporation, typically in analytical chemistry, separation techniques include all types of chromatogra...

Achieving net-zero emissions by 2050 will require tackling both energy-related and non-energy-related GHG emissions, which can be achieved through the transition to a circular economy (CE). The focus of climate change crisis reversal has been on the energy-related continuum over the years through promoting renewable energy uptake and efficiency in...

Blending ammonia with hydrogen has the potential to replace conventional hydrocarbon fuels of jet engines and gas turbines to reduce carbon emissions. Previous research on the 70%NH3-30%H2 (vol%) fuel blend characterized its cycle efficiency and emissions, however , the thermal and aerodynamic effects of the NH3-H2/air combustion flue gases on the...

Blending ammonia with hydrogen has the potential to replace conventional hydrocarbon fuels of jet engines and gas turbines to reduce carbon emissions. Previous research on the 70% NH3-30%H2 (vol%) fuel blend characterized its cycle efficiency and emissions, however , the thermal and aerodynamic effects of the NH3-H2/air combustion flue gases on the...

Considering the global scientific and industrial effort to utilize ammonia as an alternative to natural gas combustion to run power plants, it is crucial to objectively assess the literature before adjusting or proposing new and advancing techniques in ammonia plants while considering a variety of factors. As a result, this paper assesses the globa...

Adsorption of carbon dioxide (CO2), as well as many other kinds of small molecules, is of importance for industrial and sensing applications. Metal-organic framework (MOF)-based adsorbents are spotlighted for such applications. An essential for MOF adsorbent application is a simple and easy fabrication process, preferably from a cheap, sustainable,...

We investigate and test the effectiveness of a novel window windcatcher device (WWC), as a means of improving natural ventilation in buildings. Using ANSYS CFX, the performance of the window-windcatcher is compared to a control case (no window-windcatcher), in three different geographic locations (Cardiff, Doha and Amman) which are representative o...

Due to the uncertainties of determining stable, efficient, and safe operating conditions of methane-air gas turbines and the complexity of involving multivariable parameters, the task of controlling and analyzing methane-gas turbines remains a challenge despite the existing methods of control and analyses in the literature. In fact, as far as the m...

Due to the uncertainties of determining stable, efficient, and safe operating conditions of methane-air gas turbines and the complexity of involving multivariable parameters, the task of controlling and analyzing methane-gas turbines remains a challenge despite the existing methods of control and analyses in the literature. In fact, as far as the m...

In arid climates such as that of the Middle East, asphalt concrete/pavements undergo several fluctuations in their temperature profiles, which induces large dark surface areas with intensive heat absorption capacities. This phenomenon heats roads up to 80 °C or more during the summer, causing an urban heat island that negatively affects the lifetim...

This paper provides a novel approach of a power control system of a fluid tank pump to reach a specific setpoint of fluid level height. The system enables users to fill a tank to any desired height within a chosen time interval. The system is equipped with a timer that allows the user to fill the tank to the desired level within the desired time. T...

Gas turbines must now comply with much stricter emission control regulations. In fact, to combat the greenhouse effect, regulatory authorities have drastically reduced allowable emission levels. For example, in less than 12 years, the United States’ Clean Air Act issued the New Source Performance Standards (NSPS), which tightened the NOx emission m...

Blending ammonia with hydrogen has the potential of replacing conventional hydrocarbon fuels to reduce carbon emissions. However, the uncertainties of determining safe, stable, and efficient operating conditions remain a great challenge. Furthermore, although control technologies have been in the scope of interest for gas turbine manufacturers, tho...

Blending ammonia with hydrogen has the potential of replacing conventional hydrocarbon fuels to reduce carbon emissions. However, the uncertainties of determining safe, stable, and efficient operating conditions remain a great challenge. Furthermore, although control technologies have been in the scope of interest for gas turbine manufacturers, tho...

This paper provides a novel approach of a power control system of a fluid tank pump to reach a specific setpoint of fluid level height. The system enables users to fill a tank to any desired height within a chosen time interval. The system is equipped with a timer that allows the user to fill the tank to the desired level within the desired time. T...

Strict regulations and acts have been imposed to limit NOx and carbon emissions. The power generation industry has resorted to innovative techniques to overcome such a low level of tolerance. Amongst those in the literature, CO2-argon-steam oxyfuel (CARSOXY) gas turbines have theoretically been proven to offer an economically sustainable solution w...

Emergency departments (EDs) in hospitals are hotspots for highly transmissible infec-tious diseases and pose the most significant risk of viral infection spreading. With the recentCOVID-19 outbreak, it became clear that emergency department design must evolve in order tobe adequately prepared to handle the epidemic. The purpose of this research is...

Hospital emergency departments (EDs) are hubs for highly transmissible infectious diseases , posing the highest risk of viral infection transmission. With the current COVID-19 outbreak, it has become clear that the ED design needs to be altered in order to be successful in containing the pandemic. The purpose of this study is to use a computational...

Emergency departments (EDs) in hospitals are hotspots for highly transmissible infectious diseases and pose the most significant risk of viral infection spreading. With the recent COVID-19 outbreak, it became clear that emergency department design must evolve in order to be adequately prepared to handle the epidemic. The purpose of this research is...

Carbon dioxide conversion into useful products has been gaining considerable attention as a global-warming-mitigation technique. The electrochemical conversion of CO 2 into high-value chemicals involves the utilization of electrical energy in the presence of an effective catalyst. The process products depend on the number of transferred electrons d...

The combined acid gas removal and water filtration system (10) removes sour gases, such as hydrogen sulfide (H2S) and carbon dioxide (CO2), from an input gaseous hydrocarbon stream (FG), as well as producing purified water (TW). The acid gas removal system (10) has a contactor (12) for contacting the input gaseous stream (FG) with an absorption liq...

As the world continues to grapple with the reality of coronavirus disease, global research communities are racing to develop practical solutions to adjust to the new challenges. One such challenge is the control of indoor air quality in the COVID-19 era and beyond. Since COVID-19 became a global pandemic, the “super spread” of the virus has continu...

The effects of a hydrogen bond acceptor and hydrogen bond donor on carbon dioxide absorption via natural deep eutectic solvents were studied in this work. Naturally occurring non-toxic deep eutectic solvent constituents were considered; choline chloride, b-alanine, and betaine were selected as hydrogen bond acceptors; lactic acid, malic acid, and f...

We report on the successful synthesis of diammonium magnesium dihydrogendiphosphate (V) dihydrate compound (NH4)2Mg(H2P2O7)2•2H2O using a wet chemical route. Single crystal X-ray diffraction analysis and micro Raman spectroscopy are employed to characterize the compound. We demonstrate, using a multidisciplinary approach, that this compound is idea...

A novel integration between Acid Gas Removal (AGR) and Forward Osmosis (FO) regeneration system is proposed to reduce the energy consumption in both systems: in the AGR and FO regeneration unit. This process utilizes Ethanol (EtOH) as a draw solution coupled with n-pentane as a low boiling point agent. A low boiling point light hydrocarbon immiscib...

Molecular dynamics simulations are used to study the transport of CO 2 , H 2 S and CH 4 molecules across environmentally friendly choline-benzoate and choline-lactate ionic liquids (ILs). The permeability coefficients of the considered molecules are calculated using the free energy and diffusion rate profiles. Both systems show the largest resistan...

In this paper, we report high pressure experimental measurements and detailed density functional theory (DFT) as well as molecular dynamic (MD) simulations of methane (CH4) solubility in natural deep eutectic solvents (NADES) that were prepared by using alanine (Al), betaine (Be), choline chloride (ChCl) used as hydrogen bond acceptors (HBA) and la...

Novel AGR-EOR Compression Integration for Process Optimization Abdukarem Amhamed* and Ahmed Abotaleb, Qatar Environment and Energy Research Institute (QEERI) Summary In this work we aim to enhance the sour-gas loading in acid-gas removal (AGR) systems, maximizing oil-production rate at the tertiary phase and enhanced oil recovery (EOR), and mit...

In the recent past few years, deep eutectic solvents (DESs) were developed sharing similar characteristics to ionic liquids but with more advantageous features related to preparation cost, environmental impact, and efficiency for gas separation processes. Amongst many combinations of DES solvents that have been prepared, reline (choline chloride as...

Modeling the diffusion of residential solar photovoltaic (PV) systems in their social, political and economic context is crucial to help policymakers assess which policies may best support adoption. Current models of renewable energy adoption [1, 2, 3, 4] assume regulatory and incentive frameworks that do not apply to Gulf Cooperation Council (GCC)...

Natural gas (NG) processing starts from simple separation and conditioning for pipeline network for further processing, integrated offshore and onshore operations. The treated NG after processing is utilized in different applications including NG transmission distribution networks, fuel source for power generation, the feedstock for petrochemicals,...

Volatile organic compounds such as aliphatic and aromatic hydrocarbons are carried through pipelines in oil and gas industry. The leakage of these compounds from pipelines mixes with ground water. The ground water contamination poses hazards to public health that limits the reuse. It's essential to remove Volatile organic compounds (VOC's) from con...

Amine scrubbing with absorption and desorption is the most established technology for Acid Gas Removal (AGR) systems, but suffers from high regeneration energy requirements and, hence offers a good opportunity for more development. A simulation study has been carried out based on a local NGL plant data to evaluate the performance parameters for AGR...

Amine scrubbing with absorption and desorption is the most established technology for Acid Gas Removal (AGR) systems, but suffers from high regeneration energy requirements and, hence offers a good opportunity for more development. A simulation study has been carried out based on a local NGL plant data to evaluate the performance parameters for AGR...

In hot regions like the Middle East, the road asphalt pavement experience many fluctuations in their temperature profile that provides the large dark surface area with intensive heat absorption capacity, which warms the roads up to 75°C or more in summer. This phenomenon is negatively affecting the performance and urban heating. On the other hand,...

Waxy crude oils present challenging transportation problems especially when sudden decrease in temperature arises to the oil gelling, effectively crystallizing the paraffin and heavy hydrocarbons molecules. A study on Libyan waxy crude oils is carried out to establish the rheology of these crude oils under various conditions and to determine the st...