Article
Energy & Fuels
Catarina H. Pimentel, M. Sonia Freire, Diego Gomez-Diaz, Julia Gonzalez-alvarez
Summary: To solve the problem of wastewater containing dyes, researchers prepared a novel activated carbon from untreated pine sawdust and used it for dye adsorption. The activated carbon showed high surface area and microporosity, and exhibited good adsorption performance for blue and black dyes. The adsorption equilibrium data for blue and black dyes fit well in the Freundlich model, while that for the red dye fit in the Langmuir model.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Materials Science, Multidisciplinary
Mohd Gulfam Alam, Mohammed Danish, Abdulaziz M. Alanazi, Tanweer Ahmad, H. P. S. Abdul Khalil
Summary: This study investigated the efficiency of phenol removal and adsorption capacity of high-quality Acacia mangium wood activated carbon (AMW-AC) prepared from H3PO4 activation. The results showed that the percentage of phenol removal and adsorption capacity of AMW-AC were significantly influenced by solution temperature, contact time, initial phenol concentration, and solution pH. The optimal conditions for maximum phenol removal (73%) and highest adsorption capacity (53.8 mg/g) were determined as 25 degrees C solution temperature, 138 min contact time, 150 ppm initial phenol concentration, and solution pH 3.0. The study demonstrated the potential of Acacia mangium wood waste as an efficient adsorbent for phenol removal from wastewater through chemical activation with phosphoric acid.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Egert Moller, Rasmus Palm, Kenneth Tuul, Meelis Harmas, Miriam Koppel, Jaan Aruvali, Marian Kulaviir, Enn Lust
Summary: This study synthesized highly ultramicroporous carbon materials by chemically activating peat with low concentrations of ZnCl2, resulting in high micropore ratios and efficient hydrogen adsorption under low-pressure conditions.
Article
Agricultural Engineering
Feihu Zhang, Sheng Zhang, Lei Chen, Zilei Liu, Junjie Qin
Summary: This study focuses on the utilization of bark waste from Acacia mangium for the production of activated carbon using phosphoric acid activation method. The activated carbon demonstrated effective adsorption of phenol wastewater with high capacity and the adsorption behavior was well-described by Freundlich isotherm adsorption equation and McKay second-order adsorption kinetic equation. The results suggest a promising insight into the enhancement utilization of Acacia mangium resources for wastewater treatment.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Polymer Science
Nissa Nurfajrin Solihat, Eko Budi Santoso, Azizatul Karimah, Elvara Windra Madyaratri, Fahriya Puspita Sari, Faizatul Falah, Apri Heri Iswanto, Maya Ismayati, Muhammad Adly Rahandi Lubis, Widya Fatriasari, Petar Antov, Viktor Savov, Milada Gajtanska, Wasrin Syafii
Summary: Efficient isolation and understanding of lignin properties are crucial for the effective valorization of lignin as a renewable feedstock for producing bio-based chemicals. This study successfully isolated lignin from black liquor using dilute acid precipitation and fractionation methods. The physical and chemical characteristics of the lignin were analyzed, revealing the effects of fractionation on lignin morphology. These findings have important implications for the industrial application of lignin in manufacturing improved wood-based composites.
Article
Chemistry, Applied
Baihong Li, Chao Li, Dianqiang Li, Lijun Zhang, Shu Zhang, Zhenhua Cui, Dong Wang, Yonggui Tang, Xun Hu
Summary: This study investigates the evolution of functionalities and structure of activated carbon (AC) generated from pine needles activated with ZnCl2 at different temperatures. The results show that ZnCl2 can catalyze the dehydration, condensation, and aromatization reactions of sugary structures, leading to a significant increase in the yield of solid product (AC), and the resulting AC exhibits a high sensitivity to temperature. Furthermore, ZnCl2 can also catalyze the dehydration of hydroxyl group and the conversion of carbonyls in aldehydes/ketones. However, above 500 degrees C, the transformation of ZnCl2 to ZnO leads to the loss of catalytic activity.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Materials Science, Paper & Wood
Doan Van Duong, Masumi Hasegawa
Summary: Ultrasound was used to determine the mechanical properties of Acacia mangium wood from six different provenances in Vietnam, showing variations in ultrasound velocities and dynamic modulus of elasticity among the provenances, with positive correlations to other elastic properties.
Article
Chemistry, Multidisciplinary
Mohamad Firdaus Mohamad Yusop, Mohd Azmier Ahmad, Nur Ayshah Rosli, Mohd Edeerozey Abd Manaf
Summary: This study evaluated the performance of optimized acacia wood-based activated carbon as an adsorbent for methylene blue dye removal in aqueous solution. Under the optimal preparation conditions, the activated carbon showed high removal efficiency and yield, with radiation power, radiation time, and KOH-impregnation ratio significantly affecting the adsorption performance.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Energy & Fuels
Lingcong Luo, Yuling Lan, Qianqian Zhang, Jianping Deng, Qinzhi Zeng, Haili Gao, Guanben Du, Weigang Zhao
Summary: Porous activated carbons derived from balsa wood were prepared by a one-step phosphoric acid activation method, and their properties and performance were investigated. The results showed that the prepared activated carbons exhibited hierarchical pore structures and had good electrochemical performance, making them suitable for electrochemical energy storage applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Analytical
Junfeng Feng, Huimin Zhu, Yangyang Xu, Jianchun Jiang, Hui Pan
Summary: The study focused on producing high-performance activated carbon using crude commercial Indulin C kraft lignin isolated from pulping black liquor, resulting in high yield, low-cost activated carbon with superior adsorption capacity compared to other commercial lignins. This approach shows promising potential in terms of technical, economic, and environmental feasibility for increasing profit and reducing carbon emissions.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Chemistry, Multidisciplinary
Hamouda Adam Hamouda, Hassan Idris Abdu, Qinzheng Hu, Mohamed Aamer Abubaker, Haikuo Lei, Shuzhen Cui, Anwar I. Alduma, Hui Peng, Guofu Ma, Ziqiang Lei
Summary: In this study, acacia wood based hierarchical porous activated carbons were prepared and showed excellent performance as supercapacitor electrodes, with high specific surface area, significant specific capacitance, and high energy density. The special biomass pores structure contributed to the high electrochemistry performance.
FRONTIERS IN CHEMISTRY
(2022)
Article
Polymer Science
Ismawati Palle, Valeritta Lodin, Ag Ahmad Mohd Yunus, Seng Hua Lee, Paridah Md Tahir, Naruhito Hori, Petar Antov, Akio Takemura
Summary: The compatibility between isocyanate and polyol is crucial for the performance of polyurethane products. This study investigated the impact of ratios between pMDI and Acacia mangium liquefied wood polyol on the properties of polyurethane films. The results showed that higher NCO/OH ratios increased the degradation temperature and glass transition temperature of the films. The formation of urethane bonds between pMDI and polyol improved the rigidity of the films.
Article
Chemistry, Applied
Daisuke Higai, Changmin Lee, Jialin Lang, Eika W. Qian
Summary: Activated carbon-based solid acid catalysts derived from coconut shells via chemical activation and sulfonation showed high catalytic activity in the saccharification of cellulose. The activation temperature, treatment method, and surface chemical structure of the catalysts played crucial roles in determining their catalytic performance.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Gaoxu Han, Jianbo Jia, Quanrun Liu, Guangxu Huang, Baolin Xing, Chuanxiang Zhang, Yijun Cao
Summary: A series of coal-based hierarchical porous carbons with adjustable pores were successfully prepared using Zinc chloride as a template during the carbonization process, leading to improved electrical conductivity and specific capacitance of the products.
Article
Agricultural Engineering
Mohammad Amin Zamiri, Catherine Hui Niu
Summary: Activated carbons were prepared from reed canary grass using phosphoric acid as the chemical activating agent and microwave-induced activation. The optimal preparation conditions varied in different environments, and cellulose in reed canary grass was found to contribute significantly to pore development.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Chemistry, Physical
Nurul Syuhada Sulaiman, Mohd Hazim Mohamad Amini, Mohammed Danish, Othman Sulaiman, Rokiah Hashim, Samet Demirel, Gaye Kose Demirel
Summary: This study prepared activated carbon using cassava stem as the precursor and investigated its adsorption capacity for ofloxacin, a common contaminant in the pharmaceutical industry's wastewater. The activated carbon was further modified with sodium hydroxide and zinc chloride to enhance its adsorption performance. The experimental results showed that the modified activated carbon exhibited improved adsorption capacity at pH 8. Thermodynamic and kinetic studies confirmed that the adsorption process was spontaneous and followed a pseudo-second-order rate equation. The maximum adsorption capacities of the prepared adsorbents were competitive compared to previous works, making them potential alternative materials for wastewater treatment in the pharmaceutical industry.
Article
Materials Science, Multidisciplinary
Shahnaz Majeed, Mohammed Danish, Norul Aini Zakariya, Rokiah Hashim, Mohammed Tahir Ansari, Sreenivas Patro Sisinthy
Summary: This study reports the synthesis of gallic acid coated silver nanoparticles (gSNP) from E. coli and their excellent toxicity against osteosarcoma cancer cells, suggesting their potential use as a targeted drug delivery system in cancer therapy.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Biomaterials
Shahnaz Majeed, Noriz Syamil Bin Norshah, Mohammed Danish, M. N. Mohamad Ibrahim, Anima Nanda
Summary: Zinc oxide nanoparticles (ZnONPs) were synthesized using the aqueous extract of Allium sativum (A. sativum). The ZnONPs showed good antibacterial effects against various bacterial pathogens and exhibited a synergistic effect with certain antibiotics.
Article
Biochemistry & Molecular Biology
Syaifullah Muhammad, Abdul H. P. S. Khalil, Shazlina Abd Hamid, Mohammed Danish, M. Marwan, Yunardi Yunardi, C. K. Abdullah, M. Faisal, Esam Bashir Yahya
Summary: This study investigated the extraction of patchouli using supercritical carbon dioxide. Higher yields and better quality of crude patchouli oil were obtained under specific pressure and temperature conditions. The main bioactive compounds identified were patchouli alcohol, Azulene, delta-Guaiene, and Seychellene.
Article
Polymer Science
Indra Surya, C. M. Hazwan, H. P. S. Abdul Khalil, Esam Bashir Yahya, A. B. Suriani, Mohammed Danish, Azmi Mohamed
Summary: The growing concern about plastic waste pollution and environmental dangers has led to increased interest in replacing plastics with sustainable and biodegradable alternatives. This study examined the use of seaweed and kenaf cellulose nanofiber to prepare biopolymeric packaging films. The results showed that the modified film had good hydrophobic properties and a slow degradation rate, making it suitable for high-grade packaging material in various applications.
Article
Materials Science, Multidisciplinary
Mohd Gulfam Alam, Mohammed Danish, Abdulaziz M. Alanazi, Tanweer Ahmad, H. P. S. Abdul Khalil
Summary: This study investigated the efficiency of phenol removal and adsorption capacity of high-quality Acacia mangium wood activated carbon (AMW-AC) prepared from H3PO4 activation. The results showed that the percentage of phenol removal and adsorption capacity of AMW-AC were significantly influenced by solution temperature, contact time, initial phenol concentration, and solution pH. The optimal conditions for maximum phenol removal (73%) and highest adsorption capacity (53.8 mg/g) were determined as 25 degrees C solution temperature, 138 min contact time, 150 ppm initial phenol concentration, and solution pH 3.0. The study demonstrated the potential of Acacia mangium wood waste as an efficient adsorbent for phenol removal from wastewater through chemical activation with phosphoric acid.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Analytical
Shahnaz Majeed, Muthupandian Saravanan, Mohammed Danish, Norul Aini Zakariya, Mohamad Nasir Mohamad Ibrahim, Ezaz Hussain Rizvi, Sharaf un NisaAndrabi, Hamed Barabadi, Yugal Kishore Mohanta, Ebrahim Mostafavi
Summary: This study demonstrates the advantages of using green synthesized silver nanomaterials as cancer therapeutics. The surface modification of the nanoparticles enhances their biocompatibility and cell-penetrating ability. The modified nanoparticles exhibit potential cytotoxic activity against breast cancer cells.
Article
Engineering, Environmental
Mugashini Vasudevan, Sathaniswarman Remesh, Veeradasan Perumal, Pandian Bothi Raja, Mohammad Nasir Mohammad Ibrahim, Subash C. B. Gopinath, Saravanan Karuppanan, Mark Ovinis
Summary: This article presents the development and application of a green lignin-derived graphene biosensor for Troponin I, a biomarker for Acute Myocardial Infarction (AMI). The biosensor showed high analytical performance, high specificity, and a detection limit of 100 attomolar. The biosensor has a sensitivity of 31.45 mu A mM(-1) cm(-2), stability of 87%, with a relative standard deviation for reproducibility of 3.8%.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Plant Sciences
Wei Quan Pang, Chern Shun Lai, Mohamad Fadhli Mad Atari, Bothi Raja Pandian, Mohamad Nasir Mohamad Ibrahim, Swee Tiam Tan, Ivan Chew Ken Yoong, Sreeramanan Subramaniam
Summary: Graphene oxide (GO) is a novel nanomaterial with distinct physical properties and significant biological applications. This study focused on the effects of GO on the regeneration process and genetic stability of white strawberry plants, finding that lower concentrations of GO can improve plant development and stability, making it suitable for strawberry tissue culture.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Polymer Science
Asylzat Iskalieva, Mateyev Yesmurat, Khaldun M. Al Azzam, Dana Ainakulova, Yerzhanov Yerbolat, El-Sayed Negim, Mohamad Nasir Mohamad Ibrahim, Yeligbayeva Gulzhakhan
Summary: The study investigated the effect of different ratios of raw materials on the biodegradability and mechanical properties of blended copolymers (PVA/S/PEGMA). It was found that grafting PEGMA onto the copolymers can improve their tensile strength and elongation at break, while increasing the contents of PVA, S, and the molecular weight of PEGMA can delay the degradation time of the films.
Article
Green & Sustainable Science & Technology
Muhammad Qasim, Muhammad Ayoub, Karamjit Singh, Abrar Inayat, Rashid Shamsuddin, Mohammed Danish, Sarah Farrukh
Summary: This study compared three types of catalysts and found that the waste-derived CaO-implemented Ni-based catalyst demonstrated the highest sorption capacity in sorption-enhanced steam reforming (SESR), making it a promising catalyst for the process with potential cost savings.
Article
Engineering, Chemical
Ghada Mohamed Aleid, Anoud Saud Alshammari, Alamri Rahmah Dhahawi Ahmad, Fida Hussain, Sang-Eun Oh, Akil Ahmad, Mohamad Nasir Mohamad Ibrahim, Khalid Umar
Summary: Energy generation using microbial fuel cells (MFC) and removing toxic metal ions is an exciting new field of study that has gained significant attention in the scientific community. This research focuses on enhancing electron generation by extracting sugarcane waste to overcome challenges in MFC technology. The results show successful operation of MFC for 79 days in the presence of Pb2+ and Hg2+ ions, with high current density and power density, and efficient removal of these metal ions.
Article
Energy & Fuels
Muhammad Taqi-uddeen Safian, Pandian Bothi Raja, Chua Yong Shen, Mohamad Nasir Mohamad Ibrahim
Summary: The unutilized excess biomass produced by the oil palm sector has become a major environmental concern in Malaysia. This study introduces a mechanical exfoliation method to synthesize bio-based graphene from oil palm biomass and applies it as a fluid loss additive in water-based drilling mud, effectively reducing fluid loss.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
Article
Metallurgy & Metallurgical Engineering
M. M. Myrzakhanov, El-Sayed Negim, Mohammad Nasir, Khaldun M. Al Azzam
Summary: The goal of this research is to prepare novel amphiphilic graft copolymers and evaluate their effectiveness as nonionic demulsifiers in petroleum crude oil emulsions. The P(mPEG-g-MMA) graft copolymers were synthesized by grafting poly (ethylene glycol) methyl ether (mPEG) with methyl methacrylate (MMA). The nonionic surfactants produced showed a dehydration efficiency of 100% in oil emulsions at various oil: water ratios.
KOMPLEKSNOE ISPOLZOVANIE MINERALNOGO SYRA
(2023)
Article
Chemistry, Analytical
Guanshuai Zhang, Shanjian Liu, Dongmei Bi, Zhisen He, Jia Liu, Yinjiao Liu
Summary: Hydrogen peroxide pretreatment was applied for fast pyrolysis of corn stalks, and it was found that the pretreatment effectively promoted lignin depolymerization and decreased the reaction activation energy. The pretreatment also increased the cellulose content and removed alkali and alkaline earth metals from the biomass. The pH of the hydrogen peroxide solution affected the removal of lignin and ash by the pretreatment, and the composition of bio-oil changed significantly, with a significant increase in the relative content of levoglucosan after pretreatment.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2024)
