Article
Engineering, Environmental
Valentina Bernal, Liliana Giraldo, Juan Carlos Moreno-Pirajan
Summary: This study investigated the interactions between paracetamol and activated carbon, as well as their impact on adsorption capacity. By modifying the physicochemical properties of activated carbon, it was found that an increase in basic groups led to a decrease in relative kinetic constants. The adsorption capacities varied under different solvent conditions, indicating the importance of chemical interactions in the adsorption process.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Jiaqi Yu, Jun Wang, Jiahui Zhu, Ying Li, Qi Liu, Jing Yu, Rumin Li, Peili Liu, Hongsen Zhang
Summary: Chitosan-based hydrogels have been extensively studied as adsorption materials due to their abundant, biodegradable, inexpensive features and rich amino and hydroxyl groups. In this work, the structure of chitosan hydrogel and its adsorption performance towards uranyl species were comprehensively investigated. The results show that chitosan hydrogel exhibits excellent adsorption performance for low-concentration uranyl species, with a removal efficiency of over 99%. The adsorption mechanisms for different uranyl species were also explored.
Article
Multidisciplinary Sciences
Himanshu Patel
Summary: This study investigates the elution profile of anionic and cationic compounds from exhausted adsorbents. Batch elution studies and column elution experiments were conducted using various eluents to evaluate their effects on desorption efficiency. The results suggest that the pH factor plays a predominant role in the desorption exploration.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
C. D'Agostino, P. Brauer, J. Zheng, N. Robinson, A. P. E. York, L. Song, X. Fan
Summary: Nuclear magnetic resonance (NMR) relaxation is a valuable technique for investigating interactions in porous materials. The study explores the effect of aluminium content in microporous HZSM-5 zeolites on NMR relaxation times of different liquid probe molecules. Results show that highly polar molecules are sensitive to aluminium content, while the T1/T2 ratio remains constant for low polarity molecules. Density functional theory (DFT) calculations provide insights into the observed trends in NMR relaxation behavior.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Engineering, Environmental
Monika Chaudhary, Suhas, Randhir Singh, Inderjeet Tyagi, Jahangeer Ahmed, Shubham Chaudhary, Sarita Kushwaha
Summary: The study investigated the influence of different functional groups on the adsorption process, revealing that the nature of the groups affects the adsorption efficiency. Additionally, the adsorption of dyes on activated carbon was found to increase with temperature, indicating a potential for utilizing porous carbons for treatment of wastewater containing dyes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Zi Cheng, Honghong Lyu, Yao Huang, Boxiong Shen, Jingchun Tang
Summary: This study investigates the effect of coexisting metal cations on the adsorption capacity of an adsorbent for pentavalent antimony (Sb(V)). The results show that metal cations can enhance the removal of Sb(V) by the adsorbent, with a 4-fold increase in adsorption in the presence of Cd(II) coexistence. The addition of Cd(II) increases the surface potential and enhances the adsorption performance. The complexation of hydroxyl functional groups with iron oxides and the co-precipitation of FeOx/Cd(II) with Sb(V) are the primary factors enhancing the removal of Sb(V).
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Chemistry, Physical
Feng Zhao, Yuan Zhang, XiaoYing Zhang, Long Zhao, FengFeng Fu, Bin Mu, Aiqin Wang
Summary: In this study, solid waste oil shale semi-coke (SC) was used to prepare an adsorbent material called PSSC through alkali corrosion under hydrothermal conditions. The PSSC showed excellent adsorption performance for both anionic and cationic dyes, with significantly increased specific surface area compared to SC. The adsorption mechanisms were revealed and the modified adsorbent displayed different capturing abilities for different dyes with changing contact temperature.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Katrin Blondal, Khachik Sargsyan, David H. Bross, Branko Ruscic, C. Franklin Goldsmith
Summary: A new method for computing anharmonic thermophysical properties for adsorbates on metal surfaces was introduced, using classical Monte Carlo phase space integration and a neural network potential energy surface. The results show highly anharmonic motion of hydrogen on Cu(111) and significantly increased surface site fractions.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Tariq A. Altalhi, Mohamed M. Ibrahim, Gaber A. M. Mersal, M. H. H. Mahmoud, Tushar Kumeria, Mohamed G. El-Desouky, Ashraf A. El-Bindary, Mohamed A. El-Bindary
Summary: In this study, mango seeds activated carbon (MSAC) nanoparticles were prepared with high biocompatibility for potential use as drug carriers. The experimental results showed that the nanocomposite significantly enhanced the adsorption performance of the anti-cancer drug DOX, indicating its potential in drug delivery applications.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Multidisciplinary
Aunyamanee Plucksacholatarn, Bunrat Tharat, Suwit Suthirakun, Kajornsak Faungnawakij, Anchalee Junkaew
Summary: This study utilized density functional theory to investigate the reaction mechanism of HMF hydrogenation on different catalyst surfaces through adsorption calculations, revealing that different catalysts have distinct activity and selectivity in the process.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Yichun Bai, Gang Wei, Zhengqin Cao, Min Hu, Qilin Yi, Qiang Yao
Summary: In this study, the adsorption performance of CS2 and COF2 on alpha-Al2O3 (0 0 0 1) surface was calculated using density functional theory. Results showed that all adsorption processes were exothermic, and the adsorption mechanism and stability were analyzed. It was found that CS2 was easier to adsorb on the surface through C atom, while there was no significant difference in performance parameters of the adsorption configuration for COF2.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Lasse Kattwinkel, Olaf M. Magnussen
Summary: In situ linear optical diffraction is a novel method for studying surface mass transport in electrochemical environments by analyzing the change in diffraction intensity. This study focuses on the decay of diffraction signal for sulfur adsorbates on Pt(111) electrodes in 0.1M H2SO4 and explains the influence of coverage-dependent diffusion rates on the evolution of gratings. The results reveal the presence of high-density, ordered, adlayer phases with low sulfur mobility at high coverage and provide insights into extracting quantitative surface transport rates from linear optical diffraction measurements.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Steven A. Wilson, Christopher L. Muhich
Summary: High through-put computation of material properties requires candidate structures. ASAP is a new tool that can construct candidate adsorbate structures, accelerating the study of surface and porous material chemistry.
COMPUTATIONAL AND THEORETICAL CHEMISTRY
(2022)
Article
Engineering, Environmental
Shurui Cao, Fengjiao Song, Zhenghong Liu, Hongtao Su, Jie Tian, Jiade You, Zhiqiong Chen
Summary: Development of a superior water pretreatment for monitoring the psychoactive substances in urban is necessary. A novel adsorbent with selective adsorption capacity for methamphetamine (MAMP) was successfully designed using deep eutectic solvents (DES) as a modifier. The DES, named Choline chloride/Levulinic acid (LA), was screened by density functional theory (DFT) and showed high affinity towards MAMP. The proposed strategy of using DES as a modifier to regulate carrier materials based on DFT calculations for improved selective adsorption ability has important implications for efficient water environmental treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Ya Bai, Jinjia Liu, Tao Wang, Yu-Fei Song, Yong Yang, Yong-Wang Li, Xiaodong Wen
Summary: In this study, a unified calculation method was used to explore the adsorption, dissociation, and reduction behaviors of hydrogen on Fe5C2 surfaces. The results showed that the dissociation of hydrogen molecule is thermodynamically and kinetically favorable, and it strongly affects the adsorption energy. Furthermore, the equilibrium crystalline morphology evolution of Fe5C2 was constructed using Wulff theorem, and the reduction process of carbon vacancies was investigated.
APPLIED SURFACE SCIENCE
(2022)
Article
Thermodynamics
Sagar Saren, Sourav Mitra, Takahiko Miyazaki, Kim Choon Ng, Kyaw Thu
Summary: Adsorption heat transformers (AHTs) are promising systems for upgrading waste heat. This study analyzed the performance of the AHT cycle for waste heat upgrade and thermal desalination. Different adsorbents were investigated and their performance parameters were determined. The study found significant variations in adsorbent characteristics and highlighted the importance of material selection and system design optimization in the theoretical development of the AHT cycle.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
Hao Yu, Sang Won Seo, Frantisek Miksik, Kyaw Thu, Takahiko Miyazaki, Kim Choon Ng
Summary: The desiccant dehumidification system saves energy by removing latent heat and can utilize industrial waste heat and renewable energy. This study focused on the effects of regeneration air temperature and humidity ratio on the performance of a polymer-based desiccant dehumidifier. Evaluation was done based on adsorption/desorption amount, average moisture removal capacity, and latent energy ratio.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Review
Energy & Fuels
Qian Chen, Muhammad Burhan, M. Kum Ja, Muhammad Wakil Shahzad, Doskhan Ybyraiymkul, Hongfei Zheng, Xin Cui, Kim Choon Ng
Summary: This article provides an overview of the state-of-the-art investigations on the hybrid indirect evaporative cooling-mechanical vapor compression (IEC-MVC) process. It includes the potential evaluation of IEC as a pre-cooler and heat-recovery device, the energy efficiency comparison of IEC-MVC with standalone MVC, the long-term energy-saving potential under specific weather conditions, and the economic viability and water consumption of the hybrid process.
Article
Thermodynamics
Bo Han, Anutosh Chakraborty
Summary: This study focuses on the comprehensive study of MOFs plus water systems for adsorption desalination applications. The modifications and characterizations of MOFs are investigated, and the water adsorption characteristics are analyzed for different pressure and temperature conditions. Performance factors such as SDWP and PR are evaluated, and entropy generation is calculated based on the water adsorption characteristics.
APPLIED THERMAL ENGINEERING
(2023)
Article
Engineering, Chemical
Shen Liang, Hongfei Zheng, Zhiyong Zhao, Xinglong Ma, Kim Choon Ng
Summary: This paper presents an underwater solar concentrating photovoltaic-membrane distillation (CPV-MD) integrated system for coastal cities and islands with limited land resources and shortages of electricity and freshwater. A deformable solar concentrator is designed to work underwater and matched with a photovoltaic-membrane distillation module. Experimental and optical simulation results show the optical characteristics of the concentrator and the performance of the integrated system.
Article
Thermodynamics
Shahadat Hosan, Md Matiar Rahman, Shamal Chandra Karmaker, Andrew J. Chapman, Bidyut Baran Saha
Summary: This paper investigates the impact of remittances on multidimensional energy poverty in Bangladesh using a nationally representative Household Income and Expenditure Survey. The findings suggest that households with remittance income have a significantly lower level of energy poverty. The authors argue that increasing remittance inflow can contribute to alleviating energy poverty in Bangladesh and other developing nations, and therefore, national programs should be established to promote migrant workers, reduce household energy costs, and invest in modern energy technologies.
Article
Thermodynamics
Muhammad Wakil Shahzad, Doskhan Ybyraiymkul, Qian Chen, Muhammad Burhan, M. Kumja, Kim Choon Ng, Martin Birkett, Huijuan Feng, Muhammad Ahmad Jamil, Nida Imtiaz, Ben Bin Xu
Summary: The canned food market is growing due to easy access and dietary awareness, leading to increased water withdrawal and a projected supply-demand gap. Conventional desalination processes are unsustainable, while the emerging adsorption cycle offers advantages such as temperature operation and improved overall performance. This article proposes a pressure driven adsorption (PDAD) cycle to overcome limitations of conventional adsorption cycles, showing successful regeneration of silica gel and increased water production when combined with a multi effect desalination system (MED).
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Manila Reddy Madhuri, Kandadai Srinivasan, Pradip Dutta
Summary: The main goal of this study is to extract design criteria for the upper-stage adsorber bed in a two-stage two-bed adsorption cooling system. Another objective is to experimentally investigate the effects of air-cooled heat sink and hot water source temperatures on the chiller performance. These studies are important as the adsorber bed design, along with operational parameters, determines the performance of the chiller.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Sagar Saren, Sourav Mitra, Frantisek Miksik, Takahiko Miyazaki, Kim Choon Ng, Kyaw Thu
Summary: This study investigates the impact of internal heat recovery schemes on the adsorption heat transformer (AHT) cycle. By maximizing the recovery of sensible heat between adsorber beds, the necessary uptake consumption for preheating the adsorber bed can be reduced, leading to increased useful heat ratio and exergy efficiency of the AHT cycle.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Multidisciplinary Sciences
Doskhan Ybyraiymkul, Qian Chen, Muhammad Burhan, Faheem Hassan Akhtar, Raid AlRowais, Muhammad Wakil Shahzad, M. Kum Ja, Kim Choon Ng
Summary: Dehumidification is a key challenge in the AC industry. This paper investigates an advanced microwave dehumidification method and shows significant performance improvement in the laboratory.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Environmental
Bo Han, Anutosh Chakraborty
Summary: This research focuses on restructuring the MIL-53 (Al) MOFs in order to enhance their hydrophilicity and hydrophobicity, leading to improved water loadings and transfer kinetics. The modified MOFs show promising potential for thermal energy storage applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Lu Wang, Hongfei Zheng, Qian Chen, Rihui Jin, Kim Choon Ng
Summary: In this study, the thermodynamic performance of the interfacial solar still under different structures and operating conditions was experimentally studied, providing an optimization direction for strengthening the distillation process. The results showed that the interfacial still could obtain maximum evaporation heat under the vertical operation condition. It was also found that a narrower interlayer spacing and a larger evaporation temperature could bring a higher equivalent heat transfer rate and evaporation efficiency. In a sunny weather, the interfacial solar still coupled with an extended condenser can reach a 4.81 kg/m2/day water yield and a 0.486 daily gained output ratio under 1 cm interlayer spacing.
Article
Thermodynamics
Muhammad Ahmad Jamil, Muhammad Wakil Shahzad, Ben Bin Xu, Muhammad Imran, Kim Choon Ng, Syed M. Zubair, Christos N. Markides, William M. Worek
Summary: There has been a significant increase in cooling demand in recent decades. The current focus of research in cooling is on the development of unconventional, sustainable cooling systems, such as indirect evaporative coolers, which have shown great potential. However, these systems are still in the development stage and face certain design challenges.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
Muhammad Ahmad Jamil, Nida Imtiaz, Kim Choon Ng, Ben Bin Xu, Haseeb Yaqoob, Muhammad Sultan, Muhammad Wakil Shahzad
Summary: Energy-efficient space cooling is a major challenge due to high energy consumption and emissions, as well as increasing demand. Water-based cooling systems have gained attention as a sustainable and economical alternative. However, direct evaporative cooling is limited by high humidity, while existing indirect evaporative cooling systems have design limitations. The proposed innovative system addresses these limitations and offers competitive performance, with several advantages like low cost and low maintenance.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Engineering, Chemical
Muhammad Wakil Shahzad, Kim Choon Ng, Qian Chen, Ben Bin Xu
Summary: The energy-water-environment nexus is crucial for achieving the COP21 goal of limiting temperature increase below 2?. However, two third of CO2 emissions have already been used, and the remaining emissions will be depleted by 2050. Technological advancements have improved the efficiency of power and desalination sectors, but they are still operating below their thermodynamic limits.
DESALINATION AND WATER TREATMENT
(2023)
