Article
Agricultural Engineering
Liyana Syafawati Osman, Tuan Sherwyn Hamidon, Nur Hanis Abd Latif, Nur Hanani Hazirah Elias, Mokhtar Saidin, Shaiful Shahidan, Siti Halimah Angele Abdullah, Nurul Ain Ali, Siti Syahirah Mohd Rusli, Mohamad Nasir Mohamad Ibrahim, Pandian Bothi Raja, M. Hazwan Hussin
Summary: This study introduces oil palm fronds (OPF) lignin as a new green substitute for rust converters due to its antioxidant properties. The evaluation of soda and organosolv lignin samples using FTIR, C-13 NMR, and TGA suggests that soda lignin has higher antioxidant properties. Analysis of a rust sample from an archeological cannonball using FTIR, XRD, and SEM/EDX identifies lepidocrocite as the main component. FTIR study on the performance of OPF in rust treatment shows that 7 wt% soda lignin has the best rust converter effect with a 92.73% inhibition rate.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Engineering, Environmental
M. Mateen Shahid, Syed Zaheer Abbas, Fahad Maqbool, Sergio Ramirez-Solis, Valerie Dupont, Tariq Mahmud
Summary: The study investigated the impact of three different types of sorbents on sorption-enhanced steam methane reforming (SE-SMR) process and found the optimum operating conditions. CaO sorbent showed the best performance at 900K and 3 bar, with 82% CH4 conversion and 85% H-2 purity; LZC and HTC sorbents performed well at 773K and 5 bar.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Mohammed Abobakr Al-Maari, Mohd Azmier Ahmad, Azam Taufik Mohd Din, Hamizura Hassan, Ahmed Mubarak Alsobaai
Summary: Co-pyrolysis of palm wastes with plastics can increase bio-oil yield, with different effects on the chemical composition depending on the types of waste and plastic used.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Environmental
Ahmed S. Fathalla, Mohamed H. Abdel-Aziz, Gomaa H. Sedahmed, Mohamed H. Abdellah, Mohamed A. El-Naggar
Summary: This study investigates the rate of hexavalent chromium (Cr6+) reduction by scrap iron using a rotating packed bed of horizontally stacked woven iron screens. The primary focus is on enhancing the diffusion-limited reduction of Cr6+ by taking advantage of the centrifugal force induced by bed rotation and the high turbulence-promoting ability of the screen wires. The results show that the rate of diffusion-controlled reduction of Cr6+ increases with the increase in bed rotational speed, initial concentration of Cr6+, and mesh number. A correlation has been developed to predict the mass transfer coefficient under the studied conditions and serve in designing and scaling up industrial reactors. Additionally, the energy utilization efficiency of the reactor has been assessed as a performance indicator to be used for comparing the performance of the present reactor with other reactors which use different methods of mass transfer enhancement such as pulsation. Under optimum conditions, 99 % of Cr6+ was reduced to Cr3+ within 20 min and the energy consumption was 0.04-0.72 W/kg. The rotating bed with woven steel screens provides a low-cost and effective means of enhancing the rate of Cr6+ reduction, contributing to the development of more sustainable wastewater treatment solutions.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Sandhanasamy Devanesan, Mohamad S. AlSalhi
Summary: The study focused on the bioaccumulation of Cd2+ and Zn2+ by Bacillus amyloliquefaciens HM28, which showed significant resistance to these heavy metals. The biosorption of Cd2+ and Zn2+ by the dried bacterium was investigated, with high removal yields observed. The findings suggest the potential of B. amyloliquefaciens HM28 biomass in the bioremediation of Cd2+ and Zn2+ contaminated water.
Article
Multidisciplinary Sciences
Imran Khan Rind, Najma Memon, Muhammad Yar Khuhawar, Waheed Ali Soomro, Muhammad Farooque Lanjwani
Summary: Cadmium, a pollutant found in water bodies in many underdeveloped countries, requires treatment. Hydrochars made from mango peels using a thermal activation process have been identified as a potential alternative adsorbent for high-efficiency removal of cadmium ions from water.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Candelaria Tejada-Tovar, Angel Villabona-Ortiz, Angel Gonzalez-Delgado
Summary: In this study, palm oil residual biomass was used as a biosorbent to successfully remove nickel and lead ions from an aqueous solution, and the polluted biomass was employed to produce bricks that encapsulate heavy metal ions. The optimal biosorbent dosage was determined to be 0.1 g/L, with desorption yields of 11% for nickel and 83.13% for lead. The bricks prepared with 10% biomass content exhibited satisfactory mechanical resistance and leaching properties.
Review
Green & Sustainable Science & Technology
Ignacio Calderon-Vasquez, Eduardo Cortes, Jesus Garcia, Valentina Segovia, Alejandro Caroca, Cristobal Sarmiento, Rodrigo Barraza, Jose M. Cardemil
Summary: Single-tank packed-bed storage system, coupled with renewable thermal energy sources, has been established as a promising alternative with a potential cost reduction of approximately 33% compared to two-tank systems. The performance of simulation models in packed-bed energy storage systems is significantly influenced by radiation heat transfer among particles, which should not be underestimated when analyzing operation temperatures above 750 degrees C.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Agricultural Engineering
Sharifah Soplah Syed Abdullah, Ezyana Kamal Bahrin, Yoshihito Shirai, Mohd Ali Hassan
Summary: The study found that regardless of OPF juice concentration, glucose content remained stable when stored at 50 degrees Celsius and 60 degrees Celsius. Bacterial spoilage in OPF juice was slightly inhibited at 50 degrees Celsius and completely disappeared at 60 degrees Celsius. Using OPF juice stored at 50 degrees Celsius for bioethanol production resulted in approximately 15% higher bioethanol production compared to using freshly prepared OPF juice.
BIOMASS & BIOENERGY
(2021)
Article
Thermodynamics
Timothy G. Myers, Abel Valverde, Maria Aguareles, Marc Calvo-Schwarzwalder, Francesc Font
Summary: This study develops a mathematical model for the erosion or leaching process of a solid material by a flowing fluid in a column. The model combines an advection-diffusion equation with a linear kinetic reaction to describe the mass transfer between the solid and fluid. Two specific cases are analyzed, and perturbation and numerical solutions are used to verify the model. The model is also validated using experimental data, showing excellent agreement in estimating the extracted fraction.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Chemistry, Physical
Helena Sovova, Ondrej Pleskac, Marie Sajfrtova
Summary: Research has shown that enzyme-catalyzed reactions in supercritical CO2 can produce solvent-free natural products enriched in bioactive substances. The method offers advantages such as easy adjustment of CO2 properties and low mass transfer limitations, but its potential for large-scale application depends on enzyme stability in CO2. A mathematical model for immobilized lipase-catalyzed vegetable oil hydrolysis in a continuous-flow reactor was developed, and reaction rate constants and glycerol adsorption parameters were estimated. The rate-controlling step was found to be the hydrolysis of triglycerides, with a kinetic constant dependent on pressure and temperature.
JOURNAL OF SUPERCRITICAL FLUIDS
(2022)
Article
Environmental Sciences
Zhukela Lin, Yiwei Hu, Yijun Yuan, Baowei Hu, Binliang Wang
Summary: Microplastics have the potential to concentrate and transport heavy metals in the aquatic environment, with the sorption behavior of heavy metals onto them being pH and ionic strength dependent. Among the tested materials, polyvinylchloride PVC showed the highest maximum sorption capacity for lead (II) under the experimental conditions.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
Angel Villabona-Ortiz, Candelaria Tejada-Tovar, Angel Dario Gonzalez-Delgado
Summary: This study explores the single-component adsorption of chromium (VI) and nickel (II) on oil palm bagasse and yam peels in a packed bed column. By optimizing the response variable of removal efficiency, the effects of temperature, bed height, and particle size were evaluated. The bioadsorbents have a porous structure and functional groups that favor adsorption processes. The adsorption mechanisms are cation exchange, precipitation, and complexation on the exposed surface of the biomaterials. The results show that removal percentages higher than 87% were obtained in all cases, with better results for Cr(VI) removal and particle size being the most influential factor.
Article
Biotechnology & Applied Microbiology
Pajongsuk Sutarut, Benjamas Cheirsilp, Piyarat Boonsawang
Summary: Biodesulfurization using BTFs under anoxic conditions is an effective method for biogas clean-up. Immobilizing microbial consortia from different sources improved the efficiency of BTFs for H2S reduction and nitrate removal. The main phyla involved in the biodesulfurization process were Proteobacteria.
FERMENTATION-BASEL
(2023)
Article
Energy & Fuels
Pornsawan Tongbai, Kitti Keawchart, Bundit Krittacom
Summary: The study indicates that the combustion behavior and evaporation mechanism of the spherical packed-bed porous burner are strongly influenced by the equivalence ratio and firing-rate input, allowing for steady combustion state within certain Phi and FR ranges, with low CO and NOX emission levels.
Review
Engineering, Chemical
Rozaini Abdullah, Syamima Nasrin Mohamed Saleh, Kartina Embong, Ahmad Zuhairi Abdullah
CHEMICAL ENGINEERING COMMUNICATIONS
(2020)
Article
Environmental Sciences
Yin Yin Chan, Yean Ling Pang, Steven Lim, Chin Wei Lai, Ahmad Zuhairi Abdullah, Woon Chan Chong
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Environmental Sciences
Y. L. Tan, B. H. Hameed, A. Z. Abdullah
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Chemistry, Analytical
Yean L. Pang, Wen S. Teh, Steven Lim, Ahmad Z. Abdullah, Hwai C. Ong, Chien-Hou Wu
Summary: By studying different weight ratios of AC/TiO2 composites, it was found that they have high catalytic efficiency in degrading organic dyes and maintain high performance even after one cycle of use.
CURRENT ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Ahmad Zuhairi Abdullah, Muhammad Hazim Yaacob, Nor Irwin Basir
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2020)
Article
Environmental Sciences
Syamima Nasrin Mohamed Saleh, Ahmad Zuhairi Abdullah
Summary: The study focuses on the design of catalysts for converting glycerol to lactic acid and the impact of their performance on glycerol conversion rate and lactic acid yield. Catalysts with a Ce-to-Zr ratio of 1:2 showed the best performance on SBA-15, and the shape selectivity effect of the catalyst can suppress the formation of by-products.
WASTE AND BIOMASS VALORIZATION
(2021)
Review
Biotechnology & Applied Microbiology
Chi Cheng Chong, Aqsha Aqsha, Muhammad Ayoub, Muhammad Sajid, Ahmad Zuhairi Abdullah, Suzana Yusup, Bawadi Abdullah
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2020)
Article
Environmental Sciences
Hui Cheng Yap, Yean Ling Pang, Steven Lim, Chin Wei Lai, Ahmad Zuhairi Abdullah
ENVIRONMENTAL EARTH SCIENCES
(2020)
Review
Chemistry, Multidisciplinary
Muhammad Yusri Ahmad, Nor Irwin Basir, Ahmad Zuhairi Abdullah
Summary: Oxydehydration of glycerol to acrylic acid is a two-step reaction involving dehydration and oxidation, requiring careful catalyst selection and reaction condition control to achieve high yield. The review focuses on recent works and critical analysis of different catalysts, highlighting the importance of specific acid sites and redox strength of active components.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Review
Engineering, Chemical
Zulqarnain, Mohd Hizami Mohd Yusoff, Muhammad Ayoub, Norwahyu Jusoh, Ahmad Zuhairi Abdullah
Article
Engineering, Chemical
Ahmad Zuhairi Abdullah, Natasha Ghazali, Peng Yong Hoo, Nor Irwin Basir
Summary: In this study, zirconia was incorporated into mesoporous MCM-41 support for the selective esterification of glycerol with fatty acid. The catalysts showed correlations between their characteristics and activity under different reaction conditions, with the precipitation method demonstrating more internal incorporation of the acidic component.
CHEMICAL ENGINEERING COMMUNICATIONS
(2022)
Article
Environmental Sciences
Nurulhuda Amri, Suzylawati Ismail, Syahida Farhan Azha, Ahmad Zuhairi Abdullah
Summary: In this study, electrocoagulation (EC) was used to treat batik wastewater, with response surface methodology based on central composite design to analyze removal efficiency and interactions between process variables. It was found that pH was the most influential parameter causing interactions, and silica played a role in the removal mechanism.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH
(2021)
Article
Energy & Fuels
Mohsen Fallah Vostakola, Babak Salamatinia, Bahman Amini Horri
Summary: Thermochemical water-splitting method is a promising technology to convert renewable thermal energy into green hydrogen, with the capability to separate water into hydrogen and oxygen through multiple redox processes. This technique is divided into low-temperature cycles and high-temperature cycles, with the copper chlorine cycle being efficient and cost-effective for low-temperature processes, and the zinc oxide and ferrite cycles showing potential for large-scale high-temperature cycles. However, challenges such as energy storage capacity and cost-effectiveness need to be addressed before commercialization.
Article
Chemistry, Multidisciplinary
Noraini Razali, Ahmad Zuhairi Abdullah
INDONESIAN JOURNAL OF CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Nurulhuda Amri, Ahmad Zuhairi Abdullah, Suzylawati Ismail
INDONESIAN JOURNAL OF CHEMISTRY
(2020)
Article
Engineering, Environmental
Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu
Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian
Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma
Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven
Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai
Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang
Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jinzhi Cai, Zhenshan Li
Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao
Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu
Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag
Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao
Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo
Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong
Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve
Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.
CHEMICAL ENGINEERING JOURNAL
(2024)