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Synthesis and application of SBA-15 adsorbent for the removal of organic and inorganic substances

Environmental Science and Pollution Research 2024年第47期31卷 57874-57886页

作者： Yadoun, Bouchra Benhamou, Abdellah Hennous, Mohammed Benyoub, Nassima Debab, Abdelkader Process and Environmental Engineering Research Laboratory Department of Chemical Engineering Faculty of Chemistry University of Science and Technology of Oran Mohamed Boudiaf USTO-MB BP 1505 El-Mnouar Oran31000 Algeria

This study investigates the adsorption of pollutants with different chemical structures;organic Naphtol Green B (NGB) dye and copper on a nanocomposite material with a hexagonal structure of the SBA-15 type. This research is divided into two main parts: the first carries out the synthesis of SBA-15 (Santa Barbra Amourphous) and its derivatives phases functionalized by 3-aminopropyl-triethoxylane (APTES) and calcined at 823 K. The second part presents the influence of the adsorption conditions on the adsorption efficiency of NGB dye and copper. High-resolution X-ray diffractogram (XRD) showed three distinct peaks characteristic of highly ordered mesoporous material. Nitrogen adsorption–desorption isotherm of SBA-15 at 77 K° is type IV typical of mesoporous materials. In addition, Fourier transform infrared spectroscopy (FT-IR) was also used in the characterization before and after the adsorption of the selected pollutants. At optimal conditions of pH 5.2, initial concentration of 50 mg/L, adsorbent dosage of 20 mg, and at adsorption time of 90 min the maximum removal of pollutants reached 76% and the adsorption capacity was 227.25 mg/g for NGB dye and 221.006 mg/g for copper. Furthermore, the adsorption kinetics followed the pseudo-second-order model, indicating that chemisorption was the dominant mechanism and the Sips isotherm model best described the adsorption data. Our research demonstrates that the SBA-15 material after modification is an effective adsorbent for removing effluents regardless of their different chemical structure (organic and inorganic). © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Fourier transform infrared spectroscopy

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Evaluation of the effect of nanoparticle addition into Gemini surfactant on rheology and wax deposition of Malaysian crude oil

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Materials Today: Proceedings 2022年 57卷 994-1001页

作者： Ridzuan, Norida Yan, Wong Wai VijayaKumar, Shamala Devi Faculty of Chemical and Process Engineering Technology Universiti Malaysia Pahang Pahang Gambang26300 Malaysia

Crude oil is fossil fuel formed from the decomposition of decaying plants and animals in the ground. In crude oil, there is a high percentage of asphaltene that leads to wax deposition along the transport pipeline. The objective of this research is to study the effect of temperature, shear rate and nanoparticle loadings towards viscosity, interfacial tension, surface tension as well as the weight of wax deposit form. Two types of nanoparticles were used in this study, which were GOHSENX Anionic PVOH L-3266 and NICHIGO G-polymer AZF8035W. Whereas, Gemini YND1233 was used as a surfactant. Nanoparticle with different amount of loading (2 mg, 3 mg, 4 mg and 5 mg) was prepared using cyclohexane as the solvent. The nanofluid was prepared according to the load ratio of Gemini surfactant to nanoparticles of 3:1. With 5 mg of nanoparticle, L-3266 loading in Gemini surfactant showed the best performance where it resulted in the lowest viscosity, interfacial tension, surface tension and wax deposition as compared to the 2 mg of nanoparticle AZF8035W loading in Gemini surfactant. This is due to the carboxylic acid group present in AZF8035W. The optimum temperature and shear rate in reducing the crude oil viscosity was obtained at 35 °C and 80 rpm. In order to investigate the effect of nanoparticle loading and the stirring rate of impeller on the formation of wax deposit, the cold finger test had been conducted. From the cold finger analysis, the lowest weight of wax deposit was obtained at the cold finger temperature of 20 °C and the stirring rate of 500 rpm by adding 5 mg of nanoparticles L-3266 in Gemini surfactant. In conclusion, the best performance of wax inhibitor from this research was obtained by adding 5 mg of nanoparticles GOHSENX Anionic PVOH L-3266 in Gemini surfactant in order to improve the rheology of the crude oil and decrease the formation of wax deposition. © 2021

关键词： Viscosity

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Effect of reaction and post-treatment conditions on physico-chemical properties of magnetic iron oxide nano-particles Author links open overlay panel

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Particuology 2024年第8期91卷 155-167页

作者： Masome Moeni Mohamed Edokali Matthew Rogers Oscar Cespedes Louey Tliba Tamseela Habib Robert Menzel Ali Hassanpour School of Chemical and Process Engineering Faculty of Engineering and Physical ScienceUniversity of LeedsLeedsLS29JTUK School of Physics and Astronomy Faculty of Engineering and Physical ScienceUniversity of LeedsLeedsLS29JTUK Mechanical Engineering Department University of Engineering&TechnologyLahorePakistan School of Chemistry Faculty of Engineering and Physical ScienceUniversity of LeedsLeedsLS29JTUK

Poor stability and dispersibility,as well as aggregation are considered as major challenges in clinical application of iron oxide nanoparticles(IONPs).Several studies have shown that the synthesis parameters and post-synthesis treatments e.g.,drying methods,have the capability to improve the particles'***,we investigate the combined effect of synthesis and post-treatment parameters on the particle size,stability and magnetism of ***(Fe_(3)O_(4))NPs were prepared via co-precipitation and post-treated using different methods,i.e.(i)freeze dried at-53℃,0.133 mbar for 48 h(liquid nitrogen frozen(LFD)and freezer frozen(FFD)),(ii)vacuum oven dried(VOD)at 60℃for 24 h,and(iii)kept wet colloidal(WET),dispersed in deionized *** Fe_(3)O_(4)NPs’chemical functional groups,size,shape,crystallinity,stability,aggregation,porosity,and magnetic properties were further analysed using different characterisation *** results showed that,while the WET sample had the best stability and significantly less aggregation at different temperatures,amongst post-treated Fe_(3)O_(4)NPs,LFD sample exhibited the best stability(up to 37℃),dispersion and smallest polydispersity ***,all dried NPs had superparamagnetic characteristics,while,LFD Fe_(3)O_(4)NPs had better magnetic properties and stability than other drying methods.

关键词： Iron oxide nanoparticles Co-precipitation Stability Aggregation Magnetic properties

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Evaluation of gas-phase pyrolysis from agro-industrial residues 6th

Evaluation of gas-phase pyrolysis from agro-industrial resid...

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6th International Conference Wastes: Solutions, Treatments and Opportunities, 2023

作者： Almeida, P.V. Gando-Ferreira, L.M. Quina, M.J. Slezak, R. Klepacz-Smolka, A. CIEPQPF Department of Chemical Engineering University of Coimbra Coimbra Portugal Faculty of Process and Environmental Engineering Lodz University of Technology Lodz Poland

ISBN: (纸本)9781032384412

Energy recovery from industrial residues can be envisioned as a possible way to protect the environment and gain economic revenue. This work aims to assess the pyrolysis of residues from a potato processing industry (potato peel, potato offcuts, and sewage sludge). The gas fraction produced is characterized, and its calorific value is compared with the caloric value of the biogas generated through anaerobic digestion. Above 500 ⁰C no more production of bio-oil was observed. Potato peel and potato offcuts are better feed stocks than sewage sludge for obtaining gas-phase pyrolysis. For temperatures upward 600 ⁰C, about 20% of the feed stocks were converted to fuel gas with lower heating values in the range 10-11 MJ/kg. Comparing biogas obtained from a biochemical process (anaerobic digestion) with gas-phase pyrolysis, it was concluded that the former process may be favorable from the point of view of energy recovery. © 2024 The Author(s).

关键词： Sewage sludge

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STRUCTURAL ANALYSIS OF HEAT-CALCINED MODIFIED SEWAGE SLUDGE FROM WWTP IN GAS COMPLEX FOR ENVIRONMENTAL RISK ASSESSMENT

Journal of Solid Waste Technology and Management

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Journal of Solid Waste technology and Management 2024年第1期50卷 479-496页

作者： Rezig, Walid Haoui, Khadidja Kaoutar Hadjel, Mohammed Laboratory of Sciences Technology and Process Engineering LSTPE University of Sciences Technology of Oran Mohamed Boudiaf USTO-MB Faculty of Chemistry Department of Chemical Engineering BP 1505 El M’naoueur Bir El Djir 31000 Oran Oran Algeria

Thermal processing of sewage sludge (SS) wastewater treatment plant WWTP has received increasing attention in recent years. Heat calcination valorise the carbon rich organic fraction of SS, while effectively reducing SS volume. The refractory metals (thermally stable, i.e. Zn, Cu and Cr) are less volatile at different temperatures at 200 and 400 °C of thermal processes and they are enriched in the residues. To gain insights into mineralogical analysis, physicochemical, microstructure properties and heavy metals (HMs) were characterized by proximate, ultimate field emission x-ray fluorescence (XRF), scanning electron microscopy (SEM), attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, x-ray diffraction (XRD) and UV-vis spectrophotometer . Such analysis plays a crucial role in the effective management of WWTPs and in evaluating the environmental risks associated with the disposal of wastewater sludge’s. It aids in assessing the potential value of these sludge’s as fertilizer, considering factors such as the presence of potash and iron, for agricultural purposes, or as building materials, considering the presence of silica and calcium oxide. The assessment is carried out utilizing X-ray fluorescence (XRF) technology. Furthermore, a case study is included to illustrate typical situations in a WWTP, emphasizing the main challenges and limitations linked with ships, as well as wastewater management and disposal. Additionally, the specific scenario of gas complex GP1/Z is scrutinized to suggest a wastewater treatment solution, which involves evaluating potential locations for the treatment plant and determining the appropriate treatment methods to be implemented. © 2024 Widener University School of Civil engineering. All rights reserved.

关键词： Sewage sludge

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Potential use of Ulva intestinalis-derived biochar adsorbing phosphate ions in the cultivation of winter wheat Tristicum aestivum

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Bioresources and Bioprocessing 2024年第1期11卷 371-394页

作者： Natalia Niedzbała Ewa Lorenc-Grabowska Piotr Rutkowski Jacek Chęcmanowski Anna Szymczycha-Madeja Maja Wełna Izabela Michalak Department of Advanced Material Technologies Faculty of ChemistryWrocław University of Science and TechnologyWrocławPoland Department of Process Engineering and Technology of Polymer and Carbon Materials Faculty of ChemistryWrocław University of Science and TechnologyWrocławPoland Department of Analytical Chemistry and Chemical Metallurgy Faculty of ChemistryWrocław University of Science and TechnologyWrocławPoland

In this work,the properties of biochar produced from green macroalga Ulva intestinalis by pyrolysis were studied at temperatures of 300,500,and 700°*** biochar was characterized in terms of multielemental composition,BET surface area,total pore volume,and biosorption properties toward phosphate *** produced at 700°C-25 m2/g had the highest surface *** kinetics and isotherms of sorption processes of phosphate ions as sorbate by these sorbents were *** biochar was able to remove 84.3%of phosphate ions from wastewater,whereas non-modified biochar-only 40.6%.Hence,biochar enriched with phosphate ions can serve as a valuable soil *** experiments performed on winter wheat(Triticum aestivum)with a 3%addition of dry Ulva intestinalis,pristine biochar,and Mg-modified biochar enriched with phosphate ions showed that these amendments stimulated plant growth(length and fresh weight of plants)as well as enlarging the chlorophyll content in *** results indicate that the production of biochar(pristine and Mg-impregnated)is a sustainable option to valorize the biomass of seaweeds,and to recycle phosphorus from wastewater.

关键词： Green seaweed Pyrolysis Biochar Phosphate ions Wastewater treatment Soil additives

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Evaluation of biofuel from the torrefaction of Malaysian food waste 5

Evaluation of biofuel from the torrefaction of Malaysian foo...

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5th engineering technology International Conference, ETIC 2022

作者： Rahman, Rahsya Nur Udzaifa Abdul Rasid, Ruwaida Abdul Yong, Yung Sheng Ismail, Mazni Faculty of Chemical and Process Engineering Technology Universiti Malaysia Pahang Pahang Gambang26300 Malaysia

The alarming issues related to the depletion of conventional fossil-based fuel resources have sparked interest in the search for alternative resources. Being a developing country facing tremendous growth, Malaysia is generating large amounts of food waste (FW). In this paper, an investigation of the potential of FW conversion to solid, coal-like fuel is carried out through torrefaction. The torrefaction process was carried out at temperatures between 260 and 320 °C and residence times of 15 to 45 min. The results showed that a higher torrefaction temperature leads to an increase in mass loss of the initial solid FW, which is also observed with increasing residence time. The loss of solid mass, nevertheless, increased the higher heating value (HHV) of the torrefied FW. A significant improvement was also observed in the volatile matter (VM) and moisture content (MC) of torrefied FW, which both decreased, while the carbon (C) content was increased. This suggests the improvement in the fuel properties of FW and its potential as a renewable energy source. Copyright © 2023 Elsevier Ltd. All rights reserved.

关键词： Alternative Fuel Biofuel Food Waste Heating Value Torrefaction

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Biorefinery approaches for production of cellulosic ethanol fuel using recombinant engineered microorganisms

Journal of Applied Science and Engineering

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Journal of Applied Science and engineering 2024年第2期27卷 1985-2005页

作者： Sriariyanun, Malinee Gundupalli, Marttin Paulraj Phakeenuya, Vanarat Phusamtisampan, Theerawut Cheng, Yu Shen Venkatachalam, Ponnusami Biorefinery and Process Automation Engineering Center Department of Chemical and Process Engineering The Sirindhorn International Thai-German Graduate School of Engineering King Mongkut s University of Technology North Bangkok Bangkok Thailand Department of Biotechnology Faculty of Applied Science King Mongkut s University of Technology North Bangkok Bangkok Thailand Department of Chemical and Materials Engineering National Yunlin University of Science and Technology Douliu Yunlin64002 Taiwan Bioprocess Intensification Laboratory Center for Bioenergy School of Chemical & Biotechnology SASTRA Deemed University Thirumalaisamudram Thanjavur613401 India

Cellulosic ethanol has been gaining high attention due to its potential to reduce the greenhouse gas emission and cut down the world dependence on fossil fuels. Biorefinery approach for cellulosic ethanol has advantages due to its non-food competing status, natural abundance and benefit to decrease the combustion of agricultural wastes after harvesting seasons. Due to the recalcitrant structure of lignocellulose biomass, pretreatment and hydrolysis are critical to determine the economic viability of the process because they influence the conversion rate of fermentable sugars and, subsequently, final product i.e. ethanol. Therefore, the design for the process to compromise fermentation and upstream process is also essential. With all constraints exist when using harsh conditions during pretreatment, the recombinant engineered microorganisms have been developed and applied as biocatalysts during fermentation. To achieve the maximum production efficiency, different strategies of recombinant engineered microbes include expression optimization to modify the metabolic pathway, modification of secretion and transportation routes, improvement of stress tolerance, and utilization of both C5 and C6 sugars. This review provides the development and current status of cellulosic ethanol production via biorefining process by genetic engineered microbes with a focus on the technological aspects. The remaining challenges, perspective, and economical feasibility of the process are also discussed. © 2024 Tamkang University. All rights reserved.

关键词： Ethanol

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Molecular dynamics approach on intermolecular interaction between n-icosane and gemini surfactant assisted nanoparticles

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Petroleum Research 2022年第3期7卷 366-371页

作者： Shamala Devi Vijayakumar Junaidi Zakaria Norida Ridzuan Author's Faculty of Chemical and Process Engineering Technology Universitiy Malaysia Pahang26300GambangPahangMalaysia

Wax molecules tend to aggregate,and form wax solid at low temperature and result in a wax *** wax inhibitors are introduced to prevent wax ***,the performance of chemical wax inhibitors is temperature *** method using Molecular Dynamics(MD)simulation is used in this research to investigate how temperature affects wax inhibition using 2,5,8,11 Tetramethyl 6 dodecyn-5,8 Diol Ethoxylate Gemini surfactant(GS)and nanoparticles silicon dioxide(NP1),tin oxide(NP2),and nickel oxide(NP3).Wax-wax interaction of H58⋯H61of n-icosane and wax-solute interaction of hydrogen atom from n-icosane wax and carbonyl oxygen atoms from GS and NPs was investigated via radial distribution function analysis(rdf).The findings revealed that GS/NPs blends have a better chance of wax inhibition than corresponding *** that,wax-wax interaction was strongest at 288K,indicating the higher chances of wax formation at low *** simulation is a promising tool for identifying atoms responsible for the wax formation and inhibition and can be used for chemical wax inhibitor screening for different temperature.

关键词： Gemini surfactant Nanoparticles rdf analysis Intermolecular interaction Temperature

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Adsorption of CO2 on ZSM-5 and Cu-MOF at room temperature and low pressure conditions for Carbon Capture and Storage (CCS) application

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Materials Today: Proceedings 2022年 57卷 1345-1355页

作者： Daud, N.K. Najib, N.H.I.M. Faculty of Chemical & Process Engineering Technology Universiti Malaysia Pahang Lebuhraya Tun Razak Gambang26300 Malaysia

The application of Carbon Capture and Storage (CCS) is viewed as a key strategy to achieve CO2 reduction targets. In capturing CO2 process, both adsorption and absorption are promising techniques for CO2 capture, but adsorption processes using solid adsorbents are the prevailing technique nowadays. In this study, the performance of the prepared adsorbents on the CO2 capture capability is investigated and compared. Zeolite (ZSM-5) and copper metal–organic framework (Cu-MOF) are selected as adsorbents because of high surface area and the excellent performance in the adsorption process. The performance of both adsorbents in CO2 adsorption is evaluated in a fabricated setup consists of a metal cylindrical vessel equipped with flow of pure CO2 gas from a cylindrical tank. The efficiency of the adsorption system was explored as a function of the experimental parameters: effect of adsorbent dosage (0–500 mg) and inlet flow pressure (0–1 bar). Based on the findings from FTIR, EDX and XRD analyses, the results suggested successful formation of ZSM-5 and Cu-MOF. The highest particle size distribution and area for ZSM-5 were in the range of 25–66 µm and 1.7–442 µm2, while 102–149 µm and 1.7–1400 µm2 for Cu-MOF, respectively. SEM images show an agglomeration and flaky particles. From the TGA analysis, ZSM-5 tends to remain stable compared to Cu-MOF where lacks the ability to retain its framework at temperature above 400 °C. The optimum conditions obtained in the adsorption process for both adsorbents were 200 mg adsorbent dosage and 1 bar inlet pressure. Based on the results, ZSM-5 shows the best performance with high CO2 adsorption capacity as compared to Cu-MOF at the low pressure system. Under the optimum condition, 800 and 1000 mg/g adsorption capacity of Cu-MOF and ZSM-5 were achieved within 50 min of reaction to adsorb CO2. © 2022

关键词： Carbon dioxide

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