Article
Chemistry, Physical
Beili Lu, Fengzhen Wu, Zhu Yin, Changfu He, Jiamei Qian, Yiming Mao, Xinda You, Guanfeng Lin, Xuan Yang, Biao Huang
Summary: Heteroatom-doped porous carbon materials were prepared by co-pyrolysis of tannin and urea, which exhibited exceptional catalytic activity in peroxymonosulfate activation for bisphenol A degradation due to the synergetic effect of N and O functional groups and a well-developed porous structure.
APPLIED SURFACE SCIENCE
(2023)
Article
Thermodynamics
Yuming Wen, Ilman Nuran Zaini, Shule Wang, Wangzhong Mu, Par Goran Jonsson, Weihong Yang
Summary: This study investigates the pyrolysis of cardboard and polyethylene (PE) as well as their co-pyrolysis using thermogravimetric analysis, finding that the co-pyrolysis can promote the decomposition of cardboard and influence the heat absorption and reaction peak of PE. The research deepens the understanding of the synergistic effect of co-pyrolysis of cardboard and PE, supporting the potential application of pyrolysis of MSW.
Article
Thermodynamics
Zhi Li, Yue Zhang, Yimao Shen, Liwei Cheng, Bei Liu, Kele Yan, Guangjin Chen, Tianduo Li
Summary: The synergistic mechanism of KHIs and THIs in preventing methane hydrate formation involves three stages, with gas adsorption playing a dominant role. The addition of THIs to solutions containing KHIs enhances methane attraction and weakens the driving force for hydrate formation. It is suggested that the methane adsorption capacity of hybrid inhibitors should be considered in future development.
Article
Biochemistry & Molecular Biology
Lei Song, Xiao-Chen Wang, Zhen-Quan Feng, Yan-Feng Guo, Guo-Qing Meng, Hai-Ying Wang
Summary: In this study, the tannin-degrading strain Debaryomyces hansenii was screened and the tannase coding gene TANF was successfully cloned and expressed in Yarrowia lipolytica. The purified TanF tannase showed optimal activity at 40 degrees C and retained over 80% of its activity in the range of 35 degrees C-60 degrees C. It exhibited remarkable enzyme activity at pH 5.0 and retained more than 70% of its relative activity across a wide pH range of 3.0-8.0. TanF also demonstrated broad substrate specificity for gallate esters and achieved high gallic acid production from tannic acid.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2023)
Article
Nanoscience & Nanotechnology
Jianghao Xing, Yuqi Yang, Wei Zhang, Jianqin Yan, Haisheng Qian, Jiqing Hao, Liang Cheng, Xianwen Wang
Summary: Tumors pose a significant threat to human health, and there are various treatment methods available. Photothermal therapy (PTT) is commonly ineffective due to limited penetration depth of lasers. In this study, TiO nanosheets (NSs) were prepared and encapsulated with an alkyl radical generator (AIPH) in a sodium alginate (ALG) hydrogel for effective tumor killing through PTT and free radicals. The ALG hydrogel allowed prolonged retention of TiO NSs and AIPH at the tumor site, and AIPH slowly generated alkyl radicals in the deep hypoxic tumor environment, leading to enhanced antitumor efficacy. The AIPH+TiO+ALG hydrogel demonstrated promising anticancer capabilities in both in vivo and in vitro experiments.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Abdulmajid Abdullahi Shagali, Song Hu, Hanjian Li, Huanying Chi, Haoran Qing, Jun Xu, Long Jiang, Yi Wang, Sheng Su, Jun Xiang
Summary: The heating rate has a significant impact on the pyrolysis process, especially for reactions involving the co-pyrolysis of biomass and plastic. The synergistic effects of the blend samples are concentrated in the main decomposition region, and the co-pyrolysis process requires less activation energy compared to the pyrolysis of plastic alone.
Article
Green & Sustainable Science & Technology
Saad A. El-Sayed, Mohamed E. Mostafa
Summary: The pyrolysis and co-pyrolysis kinetics of Egyptian olive-pomace and wood dust, as well as their blends, were studied using advanced isoconversional model-free methods and model-fitting methods. The best reaction mechanisms and the synergistic effect of co-pyrolysis were determined. The obtained kinetics parameters were validated using the Coats and Redfern integral method.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Medicinal
Yuan-yue Li, Min-ru Jian, Su-rui Gao, Rui-chi Shen, Shao-shuai Tang, Shao-song Liu
Summary: A new tannin compound named 4-(4,5-dihydroxy-3-(4-hydroxy-3,5-dimethoxybenzoyloxy)-6-(hydroxymethyl)-tetrahydro-2H-pyran-2-yloxy)-3-methoxybenzoic acid (1) was isolated from the whole herb of the mangrove plant of Acanthus ilicifolius, along with three known compounds, vanillic acid (2), syringate (3), and acteoside (4). Their structures were determined by extensive spectroscopic analyses (IR, Q-TOF MS, 1D and 2D NMR) and comparison with reported data. Compound 1 was evaluated for its cytotoxic activity using the MTT method.
CHEMISTRY OF NATURAL COMPOUNDS
(2023)
Article
Food Science & Technology
Alexander D. Gapinski, Andrew C. Horton, Aude A. Watrelot
Summary: This study evaluated the chemistry and sensory perception of red wines made from hybrid grapes. It found that using 50% whole clusters improved the wine's phenolic, tannin, and anthocyanin contents, as well as maintaining color intensity. Tasting evaluations showed that untrained panelists preferred the wines made with 50% whole clusters. This study suggests that using whole clusters can improve the quality of red wines.
FOOD AND BIOPROCESS TECHNOLOGY
(2023)
Article
Engineering, Environmental
Qinzhe Li, Yewei Zhang, Xuan Huang, Dongliang Yang, Lixing Weng, Changjin Ou, Xuejiao Song, Xiaochen Dong
Summary: An acidity-responsive near infrared light-triggered injectable hydrogel was designed for non-antibiotic local treatment of drug-resistant bacterial infection. The hydrogel demonstrated strong photothermal property and antibacterial effects, effectively reducing bacterial burden and promoting collagen deposition during treatment.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Agriculture, Multidisciplinary
James R. Campbell, Will Thomas, Andrew L. Waterhouse, James A. Kennedy
Summary: This study investigates the impact of grape vine shading on flavonoids, and finds that shading alters berry pigmentation, tannin composition, and activity, potentially changing the astringency and mouthfeel characteristics of wine.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2023)
Article
Environmental Sciences
Zhifeng Xie, Miaoling Wang, Yusong Deng, Jining Li, Jiantao Li, Wending Pang, Liujun Xie, Daihua Jiang, Zhigang Huang, Tieguang He, Gairen Yang
Summary: The black water pollution in eucalyptus plantations can lead to fish deaths due to high concentrations of eucalyptus tannins. However, increasing levels of dissolved oxygen and Fe3+ in the water can reduce the acute toxicity of eucalyptus tannins to fish, providing important insights for the prevention of fish poisoning.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Biophysics
Danhua Ma, Wei Chen, Liang Wang, Renlu Han, Keqi Tang
Summary: The authors developed a novel nanoplatform, MnO2-AIPH, which can supply oxygen, deplete glutathione (GSH), perform photodynamic therapy (PDT), photothermal therapy (PTT), and thermodynamic therapy (TDT) for enhanced antitumor effects.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Article
Environmental Sciences
De-wen Qiao, Jian Yao, Li-jie Song, Jin-yan Yang
Summary: This study investigated the co migration of leather tannins and Cr in soils through column experiments. The results showed that tannin content in soil positively correlated with total Cr concentration in leachate, while negatively correlated with Cr (VI) concentration. Tannin addition reduced the leaching efficiency of both total Cr and Cr (VI) from the soil, indicating potential for environmental risk mitigation in tanning sites.
Article
Biochemistry & Molecular Biology
Maksimiljan Brus, Robert Frangez, Mario Gorenjak, Petra Kotnik, Zeljko Knez, Dejan Skorjanc
Summary: This study examined the impact of wood extracts rich in hydrolyzable tannins on glucose transporter gene expression and uptake in a 3D porcine-small-intestine epithelial-cell model. Results showed that HTs can modulate glucose uptake and gallic acid passage in the 3D cell model.
Article
Chemistry, Applied
Mohd Ridhwan Adam, Mohd Hafiz Dzarfan Othman, Siti Hamimah Sheikh Abdul Kadir, Mohd Hafiz Puteh, Mohd Riduan Jamalludin, Nik Abdul Hadi Md Nordin, Mohd Azri Ab Rani, Azeman Mustafa, Mukhlis A. Rahman, Juhana Jaafar
Summary: This study optimized the adsorptive removal of ammonia by natural zeolite hollow fibre ceramic membrane in a continuous crossflow system using surface response methodology. The best conditions were found to be a feed pH of 7.04, feed concentration of 75.00 mg/L, and HFCM dosage of 0.35 g, resulting in an excellent ammonia removal performance of 96.5%.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Mohd Ridhwan Adam, Mohd Hafiz Dzarfan Othman, Siti Hamimah Sheikh Abdul Kadir, Muthia Elma, Tonni Agustiono Kurniawan, Ahmad Fauzi Ismail, Mohd Hafiz Puteh, Azeman Mustafa, Mukhlis A. Rahman, Juhana Jaafar, Huda Abdullah
Summary: The study demonstrates the effective removal of ammoniacal nitrogen from contaminated water using adsorptive hollow fiber ceramic membranes derived from naturally made clinoptilolite. The HFCM exhibits excellent adsorption performance and operational efficiency in removing gaseous ammonia even at trace concentrations, making it a potentially cost-effective and simple technology for ammonia removal from wastewater.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Yusuf Olabode Raji, Mohd Hafiz Dzarfan Othman, Nik Abdul Hadi Sapiaa Md Nordin, Tonni Agustiono Kurniawan, Ahmad Fauzi Ismail, Mukhlis A. Rahman, Juhana Jaafar, Mohd Ridhwan Bin Adam, Saber Abdulhamid Alftessi, Tijjani El-badawy, Twibi Mohamed Farag
Summary: This study investigates the spontaneous wettability response of alumina nanocomposites deposited onto hollow fibre ceramic based membrane for oil-water separation. Through testing, it was found that higher sintering temperatures improved the flexural strength of the bare membrane, while increasing the loading of alumina nanocomposites enhanced oil rejection and reduced oil flux.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Ceramics
Yusuf Olabode Raji, Mohd Hafiz Dzarfan Othman, Nik Abdul Hadi Sapiaa Md Nordin, Mohd Ridhwan Adam, Khairul Anwar Mohd Said, Ahmed Fauzi Ismail, Mukhlis A. Rahman, Juhana Jaafar, Twibi Mohamed Farag, Sabeer Abdulhamid Alftessi
Summary: The study fabricated a superoleophobic membrane surface using the sol-gel technique, effectively addressing the challenges in oily wastewater treatment. By examining the effects of coating cycles on surface structure and chemical properties, the research achieved efficient oil-water separation results.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Environmental
Lukka Thuyavan Yogarathinam, Jamilu Usman, Mohd Hafiz Dzarfan Othman, Ahmad Fauzi Ismail, Pei Sean Goh, Arthanareeswaran Gangasalam, Mohd Ridhwan Adam
Summary: In this study, an economic silica based ceramic hollow fiber microporous membrane was fabricated and used for the removal of microplastics from aqueous solutions. The effects of amine monomer concentration on the formation of poly(piperazine-amide) layer were investigated, showing that higher amine concentration reduced membrane porosity and water flux. The membrane showed lower transmission of PVP during microplastics filtration, with humic acid and sodium alginate also impacting filtration efficiency.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Tijjani El-badawy, Mohd Hafiz Dzarfan Othman, Takeshi Matsuura, Muhammad Roil Bilad, Mohd Ridhwan Adam, Zhong Sheng Tai, Jeganes Ravi, A. F. Ismail, Mukhlis A. Rahman, Juhana Jaafar, Jamilu Usman, Tonni Agustiono Kurniawan
Summary: Membrane distillation (MD) has shown effectiveness in treating hypersaline feeds by nearly completely rejecting dissolved solutes, making it a potential treatment option for hypersaline oilfield produced water (PW). However, concerns regarding membrane fouling due to low surface energy organics in PW have been raised, with various mitigation approaches showing promise but requiring further research. In comparison to other conventional treatment options, MD offers cost-effective alternatives for beneficial re-use of PW, but efforts are still needed to improve energy efficiency and explore alternative energy sources.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Tonni Agustiono Kurniawan, Mohd Hafiz Dzarfan Othman, Mohd Ridhwan Adam, Hui Hwang Goh, Ayesha Mohyudin, Ram Avtar, Tutuk Djoko Kusworo
Summary: This study investigated the feasibility of using membrane filtrations, such as reverse osmosis, to treat whitewater from a pulp and paper mill. The effects of pH and silicon removal mechanisms by the membranes were discussed, and their performance in removing target pollutants were evaluated and compared to previous studies. The results showed that membrane treatment could effectively remove SiO2 from the wastewater samples, with reverse osmosis achieving almost complete removal of the target pollutant.
Article
Engineering, Chemical
Saber Abdulhamid Alftessi, Mohd Hafiz Dzarfan Othman, Mohd Ridhwan Adam, Twibi Mohamed Farag, Azeman Mustafa, Takeshi Matsuura, Juhana Jaafar, Mukhlis A. Rahman, Ahmad Fauzi Ismail
Summary: Omniphobic silica sand ceramic hollow fiber membranes were successfully fabricated to reduce wetting and fouling in direct contact membrane distillation. Surface modification with SiNPs, fluorination, and PVDF-HFP coating led to high contact angles for all tested liquids and excellent anti-fouling resistance during DCMD operation. These membranes showed high fluxes, salt rejection, and potential for seawater desalination.
Review
Engineering, Chemical
Atikah Mohd Nasir, Mohd Ridhwan Adam, Siti Nur Elida Aqmar Mohamad Kamal, Juhana Jaafar, Mohd Hafiz Dzarfan Othman, Ahmad Fauzi Ismail, Farhana Aziz, Norhaniza Yusof, Muhammad Roil Bilad, Rohimah Mohamud, Mukhlis A. Rahman, Wan Norhayati Wan Salleh
Summary: This paper comprehensively discusses the application, challenges, and future perspective of advanced membrane technology in treating pathogenic microbial contaminants and briefly discusses its potential in battling the ongoing COVID-19 pandemic.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Mohd Haiqal Abd Aziz, Mohammad Arif Budiman Pauzan, Nur Aina Shazana Mohd Hisam, Mohd Hafiz Dzarfan Othman, Mohd Ridhwan Adam, Yuji Iwamoto, Mohd Hafiz Puteh, Mukhlis A. Rahman, Juhana Jaafar, Ahmad Fauzi Ismail, Tonni Agustiono Kurniawan, Suriani Abu Bakar
Summary: In this study, a superhydrophobic ball clay based ceramic hollow fibre membrane (HFM) was successfully developed by applying a coating onto the surface of the membrane. The coated membrane, PH/C8/ZnO-C8/HFM, exhibited superior superhydrophobic properties, wetting resistance, and salt rejection compared to the control C8/HFM. This research has significant implications for various applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Mohamed Farag Twibi, Mohd Hafiz Dzarfan Othman, Mohd Nazri Mohd Sokri, Saber Abdulhamid Alftessi, Mohd Ridhwan Bin Adam, Husein D. Meshreghi, Ahmad Fauzi Ismail, Mukhlis A. Rahman, Juhana Jaafar, Tonni Agustiono Kurniawan
Summary: This study investigated a novel ceramic hollow fiber membrane with super-omniphobic properties for membrane desalination processes. The membrane was surface-modified with cobalt oxide particles and fluorinated to achieve high repellency to water and low surface tension liquids. The modified membrane showed excellent anti-fouling properties and stable desalination performance.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Multidisciplinary
Saber Abdulhamid Alftessi, Mohd Hafiz Dzarfan Othman, Mohd Ridhwan Bin Adam, Twibi Mohamed Farag, Zhong Sheng Tai, Yusuf Olabode Raji, Mukhlis A. Rahman, Juhana Jaafar, Ahmad Fauzi Ismail, Suriani Abu Bakar
Summary: A porous hollow fibre ceramic membrane derived from silica sand was successfully modified to enhance its hydrophobicity. The modified membrane exhibited higher contact angle and lower pore size and porosity, making it suitable for water purification and reclamation.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
C. R. Fadila, M. H. D. Othman, M. R. Adam, R. Takagi, T. Yoshioka, W. Khongnakorn, M. A. Rahman, J. Jaafar, A. F. Ismail
Summary: The adsorptive membrane has attracted great attention for its application in high-efficiency separation of heavy metals from wastewater. Natural materials such as chitosan, hydroxyapatite, and cellulose have been used to fabricate the adsorptive membrane, reducing the fabrication cost. Research has shown the effectiveness of adsorptive membranes in removing heavy metals, and efforts are being made to improve the antifouling properties and adsorption capacity. Titanium oxide (TiO2) and chitosan are discovered to exhibit excellent antifouling properties, making them promising materials for adsorptive membranes.
MATERIALS TODAY-PROCEEDINGS
(2022)
Article
Engineering, Environmental
Tijjani El-badawy, Mohd Hafiz Dzarfan Othman, Mohd Ridhwan Adam, Roziana Kamaludin, A. F. Ismail, Mukhlis A. Rahman, Juhana Jaafar, Saeid Rajabzadeh, Hideto Matsuyama, Jamilu Usman, Tonni Agustiono Kurniawan, Yusuf O. Raji, Stanley C. Mamah, Huda Abdullah
Summary: This study reports a modified dry-jet wet spinning process for braided hollow fiber membranes by introducing a loop-system to increase resident time in the coagulation bath. By varying the air gap, polymer concentration, and take-up speed, membranes with optimum filtration performance against crude oil emulsion feed were successfully produced.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Review
Engineering, Environmental
Mohd Ridhwan Adam, Mohd Hafiz Dzarfan Othman, Tonni Agustiono Kurniawan, Mohd Hafiz Puteh, A. F. Ismail, Watsa Khongnakorn, Mukhlis Rahman, Juhana Jaafar
Summary: This article critically reviews recent advances in adsorptive membrane technology for wastewater treatment, focusing on its fabrication and classification, surface characterizations, and practical applications. Integrated adsorption and membrane filtration processes have shown high effectiveness in removing refractory pollutants, but technical issues like membrane fouling need to be addressed.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
