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Zainal ZS, Hoo P, Ahmad AL, Abdullah AZ, Ng Q, Shuit S, Enche Ab Rahim SK, Andas J. Plant-based calcium silicate from rice husk ash: A green adsorbent for free fatty acid recovery from waste frying oil. Heliyon 2024; 10:e26591. [PMID: 38404855 PMCID: PMC10884935 DOI: 10.1016/j.heliyon.2024.e26591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 02/27/2024] Open
Abstract
Driven by the urgent need for a solution to tackle the surge of rice husk (RH) and waste frying oil (WFO) waste accumulation at a global scale, this report highlights the use of calcium silicates (CS) extracted from acid-pre-treated rice husk ash (RHA) for free fatty acid (FFA) removal from WFO as conventional RHA shows limited FFA adsorption performance. A novel alkaline earth silicate extraction method from acid-pre-treated RHA was outlined. The structural and behavioural attributes of the synthesised CS were identified through BET, SEM-EDS, and XRD analyses and compared to those of RHA. Notable morphology and structural modification were determined, including reducing specific surface areas, mitigating from amorphous to crystalline structure with regular geometric forms, and detecting Si-O-Ca functional groups exclusive to CS adsorbents. A comparison study showed superior lauric acid (LA) adsorption performance by CS absorbents over acid-pre-treated RHA, with a significant increase from 0.0831 ± 0.0004 mmol LA/g to 2.5808 ± 0.0011 mmol LA/g after 60 min. Recognised as the best-performing CS adsorbent, CS-1.0 was used for further investigations on the effect of dosage, LA concentration, and temperature for efficient LA adsorption, with up to 100% LA removal and 5.6712 ± 0.0016 mmol LA/g adsorption capacity. The adsorption isotherm and kinetic studies showed LA adsorption onto CS-1.0 followed Freundlich isotherm with KF = 0.0598 mmol(1-1/n) L(1/n) g-1 & Qe,cal = 3.1696 mmol g-1 and intraparticle diffusion model with kid = 0.1250 mmol g-1 min0.5 & Ci = 0.9625 mmol g-1, indicating rapid initial adsorption and involvement of carboxylate end of LA and the calcium ions on the CS-1.0 in the rate-limiting step. The high equilibrium adsorption capacity and LA adsorption rate indicated that the proposed CS-1.0 adsorbent has excellent potential to recover FFA from WFO effectively.
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Affiliation(s)
- Zainor Syahira Zainal
- Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
| | - Pengyong Hoo
- Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
- Centre of Excellence for Frontier Materials Research (CFMR), Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
| | - Abdul Latif Ahmad
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia
| | - Ahmad Zuhairi Abdullah
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia
| | - Qihwa Ng
- Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
- Centre of Excellence for Frontier Materials Research (CFMR), Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
| | - Siewhoong Shuit
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering & Science, Universiti Tunku Abdul Rahman, Sungai Long Campus, Jalan Sungai Long, Bandar Sungai Long, Cheras, 43000, Kajang, Selangor, Malaysia
| | - Siti Kartini Enche Ab Rahim
- Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
- Centre of Excellence for Frontier Materials Research (CFMR), Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
| | - Jeyashelly Andas
- Faculty of Applied Sciences, Universiti Teknologi MARA, Cawangan Perlis, Campus Arau, 02600, Perlis, Malaysia
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Lee JM, Kang M, Kim JS, Bae JY. Amine-Impregnated Dendritic Mesoporous Silica for the Adsorption of Formaldehyde. MICROMACHINES 2023; 15:30. [PMID: 38258149 PMCID: PMC10818587 DOI: 10.3390/mi15010030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 01/24/2024]
Abstract
To adsorb and remove formaldehyde, which is a harmful volatile organic chemical (VOC) detected indoors, an alkylamine was introduced into the substrate as a formaldehyde adsorbent. In this study, Tetraethylenepentaamine (TEPA) was introduced into the mesoporous silica using the amine impregnation method. Since the impregnated alkylamine can block the pores of the silica substrate, the pore size and pore volume are very important factors for its use as a substrate for an adsorbent. Focusing on the substrate's pore properties, Santa Barbara Amorphous-15 (SBA-15) was chosen as a conventional one-dimensional pore-structured mesoporous silica, and dendritic mesoporous silica (DMS) as a three-dimensional pore-structured mesoporous silica. To 1 g each of silica substrate DMS and SBA-15, 0, 0.5, 1.5, and 2.5 g of TEPA were introduced. A fixed concentration and amount of formaldehyde gas was flowed through the adsorbent and then the adsorbent was changed to the 2,4-Dinitrophenylhydrazine (2,4-DNPH) cartridge to adsorb the remaining formaldehyde. According to the methods recommended by the World Health Organization (WHO) and National Institute for Occupational Safety & Health (NIOSH), the formaldehyde captured by 2,4-DNPH was analyzed using high-performance liquid chromatography (HPLC). A comparison of DMS and SBA-15 in the amine impregnation method shows that not only surface area, but also large pore size and high pore volume, contribute to the formaldehyde adsorption ability.
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Affiliation(s)
- Ji Myeong Lee
- Department of Chemistry, Keimyung University, Daegu 42601, Republic of Korea; (J.M.L.); (M.K.)
| | - Misun Kang
- Department of Chemistry, Keimyung University, Daegu 42601, Republic of Korea; (J.M.L.); (M.K.)
| | - June-Seo Kim
- Division of Nanotechnology, Daegu Gyeongbuk Institute of Science & Technology (DGIST), Daegu 42988, Republic of Korea
| | - Jae Young Bae
- Department of Chemistry, Keimyung University, Daegu 42601, Republic of Korea; (J.M.L.); (M.K.)
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Facile Mesoporous Hollow Silica Synthesis for Formaldehyde Adsorption. Int J Mol Sci 2023; 24:ijms24044208. [PMID: 36835621 PMCID: PMC9966678 DOI: 10.3390/ijms24044208] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/01/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
Formaldehyde emitted from household products is classified as a hazardous substance that can adversely affect human health. Recently, various studies related to adsorption materials for reducing formaldehyde have been widely reported. In this study, mesoporous and mesoporous hollow silicas with amine functional groups introduced were utilized as adsorption materials for formaldehyde. Formaldehyde adsorption characteristics of mesoporous and mesoporous hollow silicas having well-developed pores were compared based on their synthesis methods-with or without a calcination process. Mesoporous hollow silica synthesized through a non-calcination process had the best formaldehyde adsorption characteristics, followed by mesoporous hollow silica synthesized through a calcination process and mesoporous silica. This is because a hollow structure has better adsorption properties than mesoporous silica due to large internal pores. The specific surface area of mesoporous hollow silica synthesized without a calcination process was also higher than that synthesized with a calcination process, leading to a better adsorption performance. This research suggests a facile synthetic method of mesoporous hollow silica and confirms its noticeable potential as a support for the adsorption of harmful gases.
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Wang W, Zhang Y, Sun J, Gong Y, Zhang Y. Natural rubber composites with antioxidant‐loaded activated calcium silicate for improved thermo‐oxidative aging resistance. J Appl Polym Sci 2022. [DOI: 10.1002/app.53135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Weijiang Wang
- College of Chemical Engineering Inner Mongolia University of Technology Hohhot China
- National and Local Joint Engineering Research Center for High Value Utilization of Coal‐based Solid Waste, Inner Mongolia Key Laboratory of Efficient Recycle Utilization for Coal‐Based Waste, Inner Mongolia Key Laboratory of Resources Recycle Inner Mongolia University of Technology Hohhot People's Republic of China
| | - Yongfeng Zhang
- College of Chemical Engineering Inner Mongolia University of Technology Hohhot China
- National and Local Joint Engineering Research Center for High Value Utilization of Coal‐based Solid Waste, Inner Mongolia Key Laboratory of Efficient Recycle Utilization for Coal‐Based Waste, Inner Mongolia Key Laboratory of Resources Recycle Inner Mongolia University of Technology Hohhot People's Republic of China
| | - Junmin Sun
- National and Local Joint Engineering Research Center for High Value Utilization of Coal‐based Solid Waste, Inner Mongolia Key Laboratory of Efficient Recycle Utilization for Coal‐Based Waste, Inner Mongolia Key Laboratory of Resources Recycle Inner Mongolia University of Technology Hohhot People's Republic of China
| | - Yanbing Gong
- College of Chemical Engineering Inner Mongolia University of Technology Hohhot China
- National and Local Joint Engineering Research Center for High Value Utilization of Coal‐based Solid Waste, Inner Mongolia Key Laboratory of Efficient Recycle Utilization for Coal‐Based Waste, Inner Mongolia Key Laboratory of Resources Recycle Inner Mongolia University of Technology Hohhot People's Republic of China
| | - Yinmin Zhang
- College of Chemical Engineering Inner Mongolia University of Technology Hohhot China
- National and Local Joint Engineering Research Center for High Value Utilization of Coal‐based Solid Waste, Inner Mongolia Key Laboratory of Efficient Recycle Utilization for Coal‐Based Waste, Inner Mongolia Key Laboratory of Resources Recycle Inner Mongolia University of Technology Hohhot People's Republic of China
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Activated calcium silicate/natural rubber composites prepared via latex compounding: Static and dynamic mechanical properties. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03156-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wang Z, Hao Z, Zhang Y, Zhang Y. Unravelling the intrinsic synergy between Pt and MnO x supported on porous calcium silicate during toluene oxidation. NEW J CHEM 2022. [DOI: 10.1039/d2nj02398a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Developing efficient catalysts that enhance electronic interactions between active metal sites is a promising strategy for removing volatile organic compounds (VOCs).
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Affiliation(s)
- Ziqiang Wang
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
- Inner Mongolia Key Laboratory of Efficient Cyclic Utilization of Coal-Based Solid Waste, Hohhot, 010051, China
- Key Laboratory of Resource Circulation at Universities of Inner Mongolia Autonomous Region, Hohhot, 010051, China
| | - Zhifei Hao
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
- Inner Mongolia Key Laboratory of Efficient Cyclic Utilization of Coal-Based Solid Waste, Hohhot, 010051, China
- Key Laboratory of Resource Circulation at Universities of Inner Mongolia Autonomous Region, Hohhot, 010051, China
| | - Yinmin Zhang
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
- Inner Mongolia Key Laboratory of Efficient Cyclic Utilization of Coal-Based Solid Waste, Hohhot, 010051, China
- Key Laboratory of Resource Circulation at Universities of Inner Mongolia Autonomous Region, Hohhot, 010051, China
| | - Yongfeng Zhang
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
- Inner Mongolia Key Laboratory of Efficient Cyclic Utilization of Coal-Based Solid Waste, Hohhot, 010051, China
- Key Laboratory of Resource Circulation at Universities of Inner Mongolia Autonomous Region, Hohhot, 010051, China
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Xin S, Zhu S, Zheng J, Nie L. One-step fabrication of electrospun flexible and hierarchically porous Pt/γ-Al 2O 3 nanofiber membranes for HCHO and particulate removal. NEW J CHEM 2022. [DOI: 10.1039/d2nj03080b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A flexible Pt/γ-Al2O3 nanofiber membrane with optimal 2 wt% Pt content can effectively decompose HCHO into CO2 at room temperature.
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Affiliation(s)
- Sitian Xin
- Hubei Provincial Key Laboratory of Green Materials for Light Industry. Hubei University of Technology, Wuhan 430068, China
- Collaborative Innovation Center of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China
| | - Silong Zhu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry. Hubei University of Technology, Wuhan 430068, China
- Collaborative Innovation Center of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China
| | - Jianfei Zheng
- Hubei Provincial Key Laboratory of Green Materials for Light Industry. Hubei University of Technology, Wuhan 430068, China
- Collaborative Innovation Center of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China
| | - Longhui Nie
- Hubei Provincial Key Laboratory of Green Materials for Light Industry. Hubei University of Technology, Wuhan 430068, China
- Collaborative Innovation Center of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China
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Wang Z, Hao Z, Zhang Y, Sun J, Zhang Y. Synthesis of novel highly-dispersed manganese oxide on porous calcium silicate for the catalytic oxidation of toluene. NEW J CHEM 2022. [DOI: 10.1039/d1nj04679a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly-dispersed MnOx with abundant oxygen vacancy on porous calcium silicate for the catalytic oxidation of toluene.
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Affiliation(s)
- Ziqiang Wang
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
- Inner Mongolia Key Laboratory of Efficient Recycle Utilization for Coal-Based Waste, Inner Mongolia University of Technology, Hohhot, 010051, China
| | - Zhifei Hao
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
- Inner Mongolia Key Laboratory of Efficient Recycle Utilization for Coal-Based Waste, Inner Mongolia University of Technology, Hohhot, 010051, China
| | - Yinmin Zhang
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
- Inner Mongolia Key Laboratory of Efficient Recycle Utilization for Coal-Based Waste, Inner Mongolia University of Technology, Hohhot, 010051, China
| | - Junmin Sun
- Inner Mongolia Key Laboratory of Efficient Recycle Utilization for Coal-Based Waste, Inner Mongolia University of Technology, Hohhot, 010051, China
| | - Yongfeng Zhang
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
- Inner Mongolia Key Laboratory of Efficient Recycle Utilization for Coal-Based Waste, Inner Mongolia University of Technology, Hohhot, 010051, China
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Mu Y, Zhang Y, Pei X, Dong X, Kou Z, Cui M, Meng C. Dispersed FeO x nanoparticles decorated with Co 2SiO 4 hollow spheres for enhanced oxygen evolution reaction. J Colloid Interface Sci 2021; 611:235-245. [PMID: 34953456 DOI: 10.1016/j.jcis.2021.12.099] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 12/14/2021] [Accepted: 12/15/2021] [Indexed: 10/19/2022]
Abstract
Oxygen evolution reaction (OER) has drawn ever-increasing attention because of its essential role in various renewable-energy technologies. In spite of tremendous research efforts, developing high-performance OER catalysts at low cost remains a great challenge. Inspired by two earth-abundant elements Fe and Si, herein, we report a Fe-Co2SiO4 composite consisting of well dispersed iron oxide (FeOx) decorated Co2SiO4 hollow nanospheres as an economical and promising OER catalyst. Although Co2SiO4 or FeOx alone has little OER activity, their composite exhibits satisfied performance, that is highly related to geometric effect and bimetal component electronic interactions. The Fe-Co2SiO4 composite exhibits comparable catalytic activity to most of transition mental oxide/hydroxide relevant composites at 10 mA cm-2. It is even 1.6 times higher than commercial RuO2 electrocatalyst at high current density 100 mA cm-2 in alkaline solution. In this work, surface decoration of transition metal silicate provides a new horizon to design high-performance and economical OER catalysts.
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Affiliation(s)
- Yang Mu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yifu Zhang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Xiaoyu Pei
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xueying Dong
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Zongkui Kou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Miao Cui
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Changgong Meng
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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