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Díaz-Maroto CG, Verdugo F, Fermoso J, Pizarro P, Serrano DP, Moreno I, Fermoso J. Hydrochars derived from real organic wastes as carbonaceous precursors of activated carbons for the removal of NO from contaminated gas streams. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 945:173897. [PMID: 38901591 DOI: 10.1016/j.scitotenv.2024.173897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/21/2024] [Accepted: 06/08/2024] [Indexed: 06/22/2024]
Abstract
The improvement of air quality in densely-populated urban regions constitutes an environmental challenge of increasing concern. In this respect, the abatement of NO emissions, primarily emanating from combustion processes associated with motor-vehicles, along with industrial/domestic combustion systems, represents one of the main problems. Here, three hydrochars from diverse organic residues were used as activated carbon precursors for their evaluation in the NO removal in two potential application scenarios. Hydrochars were physically activated at 800 °C with pure-CO2 or diluted-O2. These materials were tested in a lab-scale biofilter at different conditions (NO concentration, temperature, relative humidity, NO-containing gas and carbon particle size) and in a larger-scale biofilter to evaluate the long-term NO removal capacity. Hydrochar-derived carbons present a relatively well-developed micro- and mesoporous structure, with BET areas of up to 421 m2/g, and a variety of oxygen surface functionalities (carboxylic, lactone, carbonyl and quinone groups), especially concerning CO2-activated carbons. These exhibited an excellent behaviour at low NO concentration (5 ppmv) between 25 and 75 °C with removal capacities of ≈97 % and > 82 %, respectively; and still good-performance (≈66 %) in a more concentrated gas (120 ppmv). Whilst, carbons obtained by diluted-O2 activation from the same hydrochars, evidenced a higher removal capacity loss at high NO concentration. The O2 presence in the gas stream was confirmed as a crucial factor in the NO elimination, since both co-adsorb on the carbon surface favouring NO oxidation to NO2. Besides, the humidity in the airstream diminished the NO removal capacity from 0.88 to 0.51 mgNO/gcarbon, but still remained at 0.54 mgNO/gcarbon, when the carbon (in pellet) was operated at larger-scale biofilter in 9-fold longer test under humid air. Therefore, this study highlights the potential of renewable carbons to serve as cost-effective component in urban biofilters, to mitigate NO emissions from exhaust gases in biomass boilers and urban semi-close areas.
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Affiliation(s)
- Carlos G Díaz-Maroto
- Thermochemical Processes Unit, IMDEA Energy, Avda. Ramón de la Sagra 3, 28935 Móstoles, Madrid, Spain; Chemical and Environmental Engineering Group, Rey Juan Carlos University, Móstoles, Madrid, Spain
| | - Francisco Verdugo
- CARTIF Technology Centre, Parque Tecnológico de Boecillo, 205, 47151 Boecillo, Valladolid, Spain
| | - Jose Fermoso
- CARTIF Technology Centre, Parque Tecnológico de Boecillo, 205, 47151 Boecillo, Valladolid, Spain
| | - Patricia Pizarro
- Thermochemical Processes Unit, IMDEA Energy, Avda. Ramón de la Sagra 3, 28935 Móstoles, Madrid, Spain; Chemical and Environmental Engineering Group, Rey Juan Carlos University, Móstoles, Madrid, Spain
| | - David P Serrano
- Thermochemical Processes Unit, IMDEA Energy, Avda. Ramón de la Sagra 3, 28935 Móstoles, Madrid, Spain; Chemical and Environmental Engineering Group, Rey Juan Carlos University, Móstoles, Madrid, Spain
| | - Inés Moreno
- Thermochemical Processes Unit, IMDEA Energy, Avda. Ramón de la Sagra 3, 28935 Móstoles, Madrid, Spain; Chemical and Environmental Engineering Group, Rey Juan Carlos University, Móstoles, Madrid, Spain
| | - Javier Fermoso
- Thermochemical Processes Unit, IMDEA Energy, Avda. Ramón de la Sagra 3, 28935 Móstoles, Madrid, Spain.
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Saleem S, Khalid S, Nazir A, Khan Y, Ali M. Modification of polyurethane foams with zinc sulfide nanoparticles and their novel composites with multani mitti and charcoal for oil spill cleanup. RSC Adv 2024; 14:25393-25408. [PMID: 39139245 PMCID: PMC11320194 DOI: 10.1039/d4ra03924f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Accepted: 07/24/2024] [Indexed: 08/15/2024] Open
Abstract
With the rapid growth of the automobile industry, the excessive number of industrial pollutants, particularly oil spills, has become a huge threat to the natural environment. Therefore, an environmentally benign and sustainable solution is required for an effective oil spill cleanup. To enhance the sorption capacity of pristine polyurethane (PU) foam used in oil spill cleanup, ZnS nanoparticles were deposited on PU foam via a coprecipitation approach. Additionally, the effect of Fuller's earth, locally known as Multani Mitti (MM), and charcoal (CC) on the sorption properties of the PU foam were investigated and compared. Polyvinyl alcohol (PVA) was used as a binder during the modification procedure. The morphology, chemical composition, and thermal stability of ZnS/MM/PVA- and ZnS/CC/PVA-modified PU sorbents were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and X-ray photon spectroscopy (XPS). The modified PU foam exhibited outstanding properties including a high sorption capacity, high selectivity to different types of used oils such as vegetable oil, hydraulic oil, lube oil, and gear oil, and superior reusability in comparison to pristine PU foam. ZnS/CC/PVA has a sorption capacity of 16.78 g g-1 while ZnS/MM/PVA exhibited a sorption capacity of 16 g g-1. In addition, after 10 cycles of oil sorption-squeezing experiments, the oil sorption capacity remained unchanged, and the absorbed used oil could be removed and collected by an easy squeezing procedure prior to reuse. This work reveals that the ZnS/CC/PVA- and ZnS/MM/PVA-modified PU foams have a promising potential for oil spill removal and environmental protection.
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Affiliation(s)
- Shumaila Saleem
- Institute of Physics, The Islamia University of Bahawalpur Bahawalpur Pakistan
- Nanosciences & Technology Department, National Centre for Physics, Quaid-e-Azam University Campus Shahdra Valley Road Islamabad 45320 Pakistan
| | - Sadia Khalid
- Nanosciences & Technology Department, National Centre for Physics, Quaid-e-Azam University Campus Shahdra Valley Road Islamabad 45320 Pakistan
| | - Aalia Nazir
- Institute of Physics, The Islamia University of Bahawalpur Bahawalpur Pakistan
| | - Yaqoob Khan
- Nanosciences & Technology Department, National Centre for Physics, Quaid-e-Azam University Campus Shahdra Valley Road Islamabad 45320 Pakistan
| | - Majid Ali
- Thermal Energy Engineering Department, National University of Science and Technology (NUST) Islamabad Pakistan
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Sorour FH, Aboeleneen NM, Abd El-Monem NM, Ammar YA, Mansour RA. Removal of malachite green from wastewater using date seeds as natural adsorbent; isotherms, kinetics, Thermodynamic, and batch adsorption process design. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2024; 26:1321-1335. [PMID: 38409765 DOI: 10.1080/15226514.2024.2316315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
This research explores the feasibility of using date seeds (DS), an agricultural waste, for the adsorption of malachite green (MG) dye from synthesized wastewater. The characterization of the DS before and after adsorption was accomplished by FTIR, SEM, BET, and EDX measurements. Batch adsorption experiments were investigated for MG dye adsorption from aqueous solution onto the DS. The effect of different parameters such as solution pH, adsorbent dose, contact time, temperature, and the initial dye concentration were studied. The optimum pH, adsorbent dose, temperature, and contact time for the dye removal were found to be 5, 0.1 g, 25 °C, and 30 min, respectively. The equilibrium studies for the data with Langmuir, Freundlich, and Temkin isotherms showed that Freundlich isotherm is the best model to describe the adsorption of MG onto the DS particles which has a heterogeneous surface. It was found that the adsorption process follows a pseudo-second-order kinetic model which revealed that the intra-particle diffusion stage is the rate-controlling stage for the process. The thermodynamic parameters ΔG, ΔS, and ΔH suggest the possibility of chemisorption and physisorption simultaneously and indicate the exothermic and spontaneous characters of the adsorption of MG dye on DS with negative values of ΔH and ΔG.
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Affiliation(s)
- Faisal Hassan Sorour
- Chemical Engineering Department, Canal High Institute for Engineering and Technology, Suez, Egypt
| | - N M Aboeleneen
- Chemical Engineering Department, Higher Institute of Engineering and Technology, New Damietta, Egypt
| | - N M Abd El-Monem
- Chemical Engineering Department, Faculty of Engineering, Cairo University, Cairo, Egypt
| | - Yara A Ammar
- Chemical Engineering Department, Faculty of Engineering, Cairo University, Cairo, Egypt
| | - R A Mansour
- Chemical Engineering Department, Higher Institute of Engineering and Technology, New Damietta, Egypt
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Almahdy AG, El-Sayed A, Eltarahony M. A novel functionalized CuTi hybrid nanocomposites: facile one-pot mycosynthesis, characterization, antimicrobial, antibiofilm, antifouling and wastewater disinfection performance. Microb Cell Fact 2024; 23:148. [PMID: 38783243 PMCID: PMC11112895 DOI: 10.1186/s12934-024-02400-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Accepted: 04/23/2024] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND The continuous progress in nanotechnology is rapid and extensive with overwhelming futuristic aspects. Through modernizing inventive synthesis protocols, a paradigm leapfrogging in novelties and findings are channeled toward fostering human health and sustaining the surrounding environment. Owing to the overpricing and jeopardy of physicochemical synthesizing approaches, the quest for ecologically adequate schemes is incontestable. By developing environmentally friendly strategies, mycosynthesis of nanocomposites has been alluring. RESULTS Herein, a novel architecture of binary CuO and TiO2 in nanocomposites form was fabricated using bionanofactory Candida sp., for the first time. For accentuating the structural properties of CuTi nanocomposites (CuTiNCs), various characterization techniques were employed. UV-Vis spectroscopy detected SPR at 350 nm, and XRD ascertained the crystalline nature of a hybrid system. However, absorption peaks at 8, 4.5, and 0.5 keV confirmed the presence of Cu, Ti and oxygen, respectively, in an undefined assemblage of polygonal-spheres of 15-75 nm aggregated in the fungal matrix of biomolecules as revealed by EDX, SEM and TEM. However, FTIR, ζ-potential and TGA reflected long-term stability (- 27.7 mV) of self-functionalized CuTiNCs. Interestingly, a considerable and significant biocide performance was detected at 50 µg/mL of CuTiNCs against some human and plant pathogens, compared to monometallic counterparts. Further, CuTiNCs (200 µg/mL) ceased significantly the development of Staphylococcus aureus, Pseudomonas aeruginosa and Candida albicans biofilms by 80.3 ± 1.4, 68.7 ± 3.0 and 55.7 ± 3.0%, respectively. Whereas, 64.63 ± 3.5 and 89.82 ± 4.3% antimicrofouling potentiality was recorded for 100 and 200 µg/ml of CuTiNCs, respectively; highlighting their destructive effect against marine microfoulers cells and decaying of their extracellular polymeric skeleton as visualized by SEM. Moreover, CuTiNCs (100 and 200 µg/ml) exerted significantly outstanding disinfection potency within 2 h by reducing the microbial load (i.e., total plate count, mold & yeast, total coliforms and faecal Streptococcus) in domestic and agricultural effluents reached >50%. CONCLUSION The synergistic efficiency provided by CuNPs and TiNPs in mycofunctionalized CuTiNCs boosted its recruitment as antiphytopathogenic, antibiofilm, antimicrofouling and disinfectant agent in various realms.
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Affiliation(s)
- Asmaa G Almahdy
- Botany and Microbiology Department, Faculty of science, Damietta University, Damietta, Egypt
| | - Ahmed El-Sayed
- Botany and Microbiology Department, Faculty of science, Damietta University, Damietta, Egypt
| | - Marwa Eltarahony
- Environmental Biotechnology Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El- Arab City, Alexandria, 21934, Egypt.
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Saqib QM, Ahmad I, Mannan A, Mahmood J, Ameen S, Patil CS, Noman M, Kim J, Okyay MS, Patil SR, Ko Y, Noh HJ, Wong BM, Kim B, Bae J, Baek JB. Triboelectric Energy Harvesting from Highly Conjugated Fused Aromatic Ladder Structure Under Extreme Environmental Conditions. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2311029. [PMID: 38299366 DOI: 10.1002/adma.202311029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 01/10/2024] [Indexed: 02/02/2024]
Abstract
Practical application of triboelectric nanogenerators (TENGs) has been challenging, particularly, under harsh environmental conditions. This work proposes a novel 3D-fused aromatic ladder (FAL) structure as a tribo-positive material for TENGs, to address these challenges. The 3D-FAL offers a unique materials engineering platform for tailored properties, such as high specific surface area and porosity, good thermal and mechanical stability, and tunable electronic properties. The fabricated 3D-FAL-based TENG reaches a maximum peak power density of 451.2 µW cm-2 at 5 Hz frequency. More importantly, the 3D-FAL-based TENG maintains stable output performance under harsh operating environments, over wide temperature (-45-100 °C) and humidity ranges (8.3-96.7% RH), representing the development of novel FAL for sustainable energy generation under challenging environmental conditions. Furthermore, the 3D-FAL-based TENG proves to be a promising device for a speed monitoring system engaging reconstruction in virtual reality in a snowy environment.
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Affiliation(s)
- Qazi Muhammad Saqib
- Department of Ocean System Engineering, Jeju National University, Jeju, 63243, Republic of Korea
| | - Ishfaq Ahmad
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- POLYMAT, University of the Basque Country UPV/EHU, Avenida de Tolosa 72, 20018 Donostia-San, Sebastian, 20018, Spain
| | - Abdul Mannan
- Department of Physics, University of Management and Technology, Lahore, 54770, Pakistan
| | - Javeed Mahmood
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Oxide & Organic Nanomaterials for Energy & Environment (ONE) Laboratory, Chemistry Program; Advanced Membranes & Porous Materials (AMPM) Center; KAUST Catalysis Center (KCC); Physical Science & Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia
| | - Shahid Ameen
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Chandrashekhar S Patil
- Department of Ocean System Engineering, Jeju National University, Jeju, 63243, Republic of Korea
| | - Muhammad Noman
- Department of Ocean System Engineering, Jeju National University, Jeju, 63243, Republic of Korea
| | - Jungmin Kim
- Department of Ocean System Engineering, Jeju National University, Jeju, 63243, Republic of Korea
| | - Mahmut Sait Okyay
- Materials Science & Engineering Program, Department of Chemistry, University of California-Riverside, Riverside, CA, 92521, USA
| | - Swapnil R Patil
- Department of Ocean System Engineering, Jeju National University, Jeju, 63243, Republic of Korea
| | - Youngbin Ko
- Department of Ocean System Engineering, Jeju National University, Jeju, 63243, Republic of Korea
| | - Hyuk-Jun Noh
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Bryan M Wong
- Materials Science & Engineering Program, Department of Chemistry, University of California-Riverside, Riverside, CA, 92521, USA
| | - BongSoo Kim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Jinho Bae
- Department of Ocean System Engineering, Jeju National University, Jeju, 63243, Republic of Korea
| | - Jong-Beom Baek
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
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Aigbe UO, Lebepe TC, Oluwafemi OS, Osibote OA. Prediction and optimizing of methylene blue sequestration to activated charcoal/magnetic nanocomposites using artificial neutral network and response surface methodology. CHEMOSPHERE 2024; 355:141751. [PMID: 38522674 DOI: 10.1016/j.chemosphere.2024.141751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 01/18/2024] [Accepted: 03/16/2024] [Indexed: 03/26/2024]
Abstract
Green synthesized magnetic nanoparticles (MNPs) linked with activated charcoal (AC) (AC/Fe3O4 NCs) were exploited for methylene blue (MB) confiscation in this study. The AC/Fe3O4 NCs produced were characterized using TEM, FTIR, UV/Vis and XRD spectrometry. The Response-Surface-Methodology (RSM) was utilized to improve the experimental data for the MB sorption to AC/Fe3O4 NCs, with 20 experimental runs implemented through a central composite design (CCD) to assess the effect of sorption factors-initial MB concentration, pH and sorbent dosage effects on the response (removal-effectiveness). The quadratic model was discovered to ideally describe the sorption process, with an R2 value of 0.9857. The theoretical prediction of the experimental data using the Artificial-Neural-Network (ANN) model showed that the Levenberg-Marquardt (LM) had a better performance criterion. Comparison between the modelled experimental and predicted data showed also that the LM algorithm had a high R2 of 0.9922, which showed NN model applicability for defining the sorption of MB to AC/Fe3O4 NCs with practical precision. The results of the non-linear fitting (NLF) of both isotherm and kinetic models, showed that the sorption of MB to AC/Fe3O4 NCs was perfectly described using the pseudo-second-order (PSOM) and Freundlich (FRHM) models. The estimated optimum sorption capacity was 455 mg g-1. Thermodynamically, the sorption of MB to AC/Fe3O4 NCs was shown to be non-spontaneous and endothermic.
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Affiliation(s)
- Uyiosa Osagie Aigbe
- Department of Mathematics and Physics, Faculty of Applied Sciences, Cape Peninsula University of Technology, Cape Town, South Africa.
| | - Thabang Calvin Lebepe
- Department of Chemical Sciences (Formerly Applied Chemistry), University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | - Oluwatobi Samuel Oluwafemi
- Department of Chemical Sciences (Formerly Applied Chemistry), University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa; Centre for Nanomaterials Science Research, University of Johannesburg, P. O. Box 17011, Doornfontein, 2028, Johannesburg, South Africa
| | - Otolorin Adelaja Osibote
- Department of Mathematics and Physics, Faculty of Applied Sciences, Cape Peninsula University of Technology, Cape Town, South Africa
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Aktas K, Liu H, Eskicioglu C. Treatment of aqueous phase from hydrothermal liquefaction of municipal sludge by adsorption: Comparison of biochar, hydrochar, and granular activated carbon. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 356:120619. [PMID: 38518489 DOI: 10.1016/j.jenvman.2024.120619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 02/20/2024] [Accepted: 03/10/2024] [Indexed: 03/24/2024]
Abstract
Hydrothermal liquefaction (HTL) is promising for treating waste with high moisture, such as municipal sludge, and producing biocrude (a petroleum-like biofuel). However, a large amount of wastewater byproduct, HTL aqueous, is generated. The presence of hazardous compounds (e.g., phenolic compounds and nitrogenous organics) makes HTL aqueous the biggest bottleneck for full-scale implementation at treatment plants. This study investigated the adsorption of various pollutants, focusing on chemical oxygen demand (COD), in HTL aqueous to granular activated carbon (GAC), biochar, and hydrochar. It assessed the effect of pH, temperature, time, and adsorbent concentration on adsorption efficiency and identified proper adsorbent and process conditions for removing most of the pollutants from HTL aqueous. GAC showed the highest adsorption capacity (184 mg/g) for COD, surpassing biochar (44 mg/g) and hydrochar (42 mg/g). The adsorption of COD to all adsorbents followed pseudo-second-order kinetic and Freundlich isotherm, suggesting that the adsorption of HTL aqueous pollutants is a heterogeneous and multilayer process, limited by chemosorption. The adsorption was endothermic, favored by elevated temperatures and neutral pH. This means adsorption is more efficient and economical for treating HTL aqueous that is a hot stream at the large-scale and it saves chemical needs. Lastly, GAC was highly efficient and selective in removing harmful pollutants, such as COD (up to 66%), total phenolic compounds (up to 94%), pyrazines (up to 99%), pyridines (up to 100%), and cyclic ketones (up to 95%) while preserving valuable volatile fatty acids (VFAs) and ammonia for subsequent recovery. Removal of potentially inhibitory compounds and preserving VFAs are crucial for carbon recovery in anaerobic biological treatment of HTL aqueous. The results suggested the necessity of optimizing adsorbent dose for maximizing removal of specific group of inhibitory compounds in full-strength HTL aqueous for enhancing downstream biological treatment. Lastly, this study established the groundwork for HTL aqueous adsorption, elucidating its effectiveness and mechanism for pollutant removal.
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Affiliation(s)
- Kemal Aktas
- UBC Bioreactor Technology Group, School of Engineering, The University of British Columbia, Okanagan Campus, 1137 Alumni Avenue, Kelowna, British Columbia, V1V 1V7, Canada.
| | - Huan Liu
- UBC Bioreactor Technology Group, School of Engineering, The University of British Columbia, Okanagan Campus, 1137 Alumni Avenue, Kelowna, British Columbia, V1V 1V7, Canada.
| | - Cigdem Eskicioglu
- UBC Bioreactor Technology Group, School of Engineering, The University of British Columbia, Okanagan Campus, 1137 Alumni Avenue, Kelowna, British Columbia, V1V 1V7, Canada.
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Mahmood U, Alkorbi AS, Hussain T, Nazir A, Qadir MB, Khaliq Z, Faheem S, Jalalah M. Adsorption of lead ions from wastewater using electrospun zeolite/MWCNT nanofibers: kinetics, thermodynamics and modeling study. RSC Adv 2024; 14:5959-5974. [PMID: 38362070 PMCID: PMC10867556 DOI: 10.1039/d3ra07720a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 01/31/2024] [Indexed: 02/17/2024] Open
Abstract
Heavy metal contamination in water is a serious environmental issue due to the toxicity of metals like lead. This study developed zeolite and multi-walled carbon nanotube (MWCNT) incorporated polyacrylonitrile (PAN) nanofibers via needleless electrospinning and examined their potential for lead ion adsorption from aqueous solutions. The adsorption process was optimized using response surface methodology (RSM) and artificial neural network (ANN) modeling approaches. The adsorbent displayed efficient lead removal of 84.75% under optimum conditions (adsorbent dose (2.21 g), adsorption time (207 min), temperature (48 °C), and initial concentration (62 ppm)). Kinetic studies revealed that the adsorption followed pseudo-first-order kinetics governed by interparticle diffusion. Isotherm analysis indicated Langmuir monolayer adsorption with improved 5.90 mg g-1 capacity compared to pristine PAN nanofibers. Thermodynamic parameters suggested the adsorption was spontaneous and endothermic. This work demonstrates the promise of electrospun zeolite/MWCNT nanofibers as adsorbents for removing lead from wastewater.
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Affiliation(s)
- Urwa Mahmood
- Department of Textile Engineering, National Textile University Faisalabad 37610 Pakistan
| | - Ali S Alkorbi
- Science and Engineering Research Center, Najran University Najran 11001 Saudi Arabia
- Department of Chemistry, Faculty of Science and Arts at Sharurah, Najran University Sharurah 68342 Saudi Arabia
| | - Tanveer Hussain
- Department of Textile Engineering, National Textile University Faisalabad 37610 Pakistan
| | - Ahsan Nazir
- Department of Textile Engineering, National Textile University Faisalabad 37610 Pakistan
- Laboratoire de Physique et Mécanique Textiles (LPMT), Université de Haute-Alsace | UHA Mulhouse France
| | - Muhammad Bilal Qadir
- Department of Textile Engineering, National Textile University Faisalabad 37610 Pakistan
- Department of Organic and Nano Engineering, Hanyang University Seoul 04763 South Korea
| | - Zubair Khaliq
- Department of Materials, National Textile University Faisalabad 37610 Pakistan
- Department of Organic and Nano Engineering, Hanyang University Seoul 04763 South Korea
| | - Sajid Faheem
- Department of Textile Engineering, National Textile University Faisalabad 37610 Pakistan
| | - Mohammed Jalalah
- Science and Engineering Research Center, Najran University Najran 11001 Saudi Arabia
- Department of Electrical Engineering, College of Engineering, Najran University Najran 11001 Saudi Arabia
- Advanced Materials and Nano-Research Centre (AMNRC), Najran University Najran 11001 Saudi Arabia
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Nguyen Tan T, Babel S, Bora T, Sreearunothai P, Laohhasurayotin K. Preparation of heterogeneous cation exchange membrane and its contributions in enhancing the removal of Ni 2+ by capacitive deionization system. CHEMOSPHERE 2024; 350:141115. [PMID: 38182085 DOI: 10.1016/j.chemosphere.2024.141115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/24/2023] [Accepted: 01/02/2024] [Indexed: 01/07/2024]
Abstract
Capacitive deionization (CDI), an emerging method to eliminate ions from water at a low cost, has garnered significant interest in recent years. This study evaluates the implication of cation exchange resin loading on the membrane via the nonsolvent-induced phase inversion method. After determining the quantity of resins efficiently loaded on the membrane, it was subsequently utilized as a cation exchange membrane in the membrane capacitive deionization (MCDI) unit to examine the performance removal of Ni2+. The results show that the amount of resins influenced the membrane structure and significantly improved the efficiency of Ni2+ removal. The sulfonic acid group show a strong intensity directly proportional to the quantity of resins based on the FTIR measurement. In conjunction with the enhanced resin amount, ion exchange capacity and water content were increased. Simultaneously, there was an observed elevation in the water contact angle and the roughness of the membrane surface with increased resin amount. In the MCDI unit, membrane M20 (20% by weight resin) was employed to elucidate its roles in the CDI unit, encompassing an examination of various concentrations and flow rates, with Ni2+ utilized as a test contaminant. The results demonstrated that using membrane M20 in the MCDI (MCDI-M20) unit consistently exhibited higher adsorption levels than the CDI unit, reaching 19.80 mg g-1 ACC in the MCDI-M20 unit, while CDI unit achieved 10.27 mg g-1 ACC at 200 mg L-1 Ni2+ concentration and a flow rate of 10 mL min-1 at 1.2 V. Additionally, Ni2+ concentrations and flow rates in CDI system had an evident impact on the duration of adsorption due to the mechanisms of ions transport on the membrane. This study suggests that employing the prepared membrane in the MCDI unit enhanced the removal of Ni2+ from the solution, contributing to sustainable development goals.
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Affiliation(s)
- Thong Nguyen Tan
- School of Biochemical Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University, P.O. Box 22, Pathum Thani, 12121, Thailand
| | - Sandhya Babel
- School of Biochemical Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University, P.O. Box 22, Pathum Thani, 12121, Thailand.
| | - Tanujjal Bora
- Center of Excellence in Nanotechnology, School of Engineering and Technology, Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathum Thani, 12121, Thailand
| | - Paiboon Sreearunothai
- School of Biochemical Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University, P.O. Box 22, Pathum Thani, 12121, Thailand
| | - Kritapas Laohhasurayotin
- National Nanotechnology Center, National Science and Technology Development Agency 111 Thailand Science Park, Khlong 1, Khlong Luang, Pathum Thani, 12120, Thailand
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Gayathiri M, Pulingam T, Lee KT, Mohd Din AT, Kosugi A, Sudesh K. Sustainable oil palm trunk fibre based activated carbon for the adsorption of methylene blue. Sci Rep 2023; 13:22137. [PMID: 38092816 PMCID: PMC10719241 DOI: 10.1038/s41598-023-49079-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 12/04/2023] [Indexed: 12/17/2023] Open
Abstract
Activated carbon (AC) is becoming the limelight due to its widespread application as an adsorbent for wastewater treatment, gases, and catalysis. However, its high consumption and price have drawn more attention to the sustainable use of natural resources as precursor for AC production. This study focuses on synthesising AC from two types of oil palm trunk (OPT) fibres, a significant agricultural waste products produced by Malaysia's thriving palm oil industries. The BET surface area of about 2057.9 m2 g-1 was achieved by chemical activation with phosphoric acid (H3PO4). The efficiency of the synthesised AC was critically analysed based on the adsorption experiments with methylene blue (MB) by varying several parameters (dosage of adsorbent, pH, initial dye concentration, and temperature of the solution) to elucidate the adsorption mechanism(s). A maximum adsorption capacity of 320.4 mg g-1 at 50 °C was achieved, and the Temkin (r2 = 0.98, 0.95, 0.95) and Langmuir (r2 = 0.94, 0.93, 0.95) isotherm models fitted the adsorption process better than the Freundlich (r2 = 0.95, 0.90, 0.86) model. Besides, the pseudo-second-order model (r2 > 0.90) best described the adsorption process, favouring chemisorption over physisorption. Thermodynamics showed MB adsorption on AC was spontaneous except at the highest dye concentration. It was exothermic at lower dye concentrations (50 and 100 mg L-1) and endothermic at higher ones (300, 500, and 700 mg L-1). In a nutshell, this study reveals that OPT fibre is a promising precursor for synthesising highly porous AC for the adsorption of MB dye.
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Affiliation(s)
- Muniandy Gayathiri
- School of Biological Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Thiruchelvi Pulingam
- School of Biological Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - K T Lee
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300, Nibong Tebal, Penang, Malaysia
| | | | - Akihiko Kosugi
- Japan International Research Center for Agricultural Sciences (JIRCAS), Biological Resources and Post-Harvest Division, 1-1 Ohwashi, Tsukuba, Ibaraki, 305-8686, Japan
- University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Kumar Sudesh
- School of Biological Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia.
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11
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Hezema NN, Eltarahony MM, Abdel Salam SA. Therapeutic and antioxidant potential of bionanofactory Ochrobactrum sp.-mediated magnetite and zerovalent iron nanoparticles against acute experimental toxoplasmosis. PLoS Negl Trop Dis 2023; 17:e0011655. [PMID: 37801440 PMCID: PMC10558077 DOI: 10.1371/journal.pntd.0011655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 09/11/2023] [Indexed: 10/08/2023] Open
Abstract
The control of toxoplasmosis, a rampant one health disease, has been focussed on conventional antitoxoplasmic agents with their adverse outcomes, including serious side effects, treatment failure and emergence of drug resistant strains. Nanobiotechnology may provide a strong impetus for versatile alternative therapies against toxoplasmosis. Bionanofactory Ochrobactrum sp. strain CNE2 was recruited for the biosynthesis of functionalized magnetite iron nanoparticles (MNPs) and nanozerovalent iron (nZVI) under aerobic and anaerobic conditions and their therapeutic efficacy was evaluated against acute toxoplasmosis in murine model. The formation of self-functionalized spherical nanoparticles varied in size, identity and surface properties were substantiated. Mice were orally administered 20 mg/kg of each formulation on the initial day of infection and continued for seven consecutive days post infection (PI). Parasitological, ultrastructural, immunological, and biochemical studies were performed for assessment of therapeutic activity of biogenic iron nanoparticles (INPs). Parasitologically, MNPs showed the highest antitoxoplasmic efficacy in terms of 96.82% and 91.87% reduction in mean tachyzoite count in peritoneal fluid and liver impression smears, respectively. Lesser percentage reductions were recorded in nZVI-treated infected subgroup (75.44% and 69.04%). In addition, scanning electron microscopy (SEM) examination revealed remarkable reduction in size and extensive damage to the surface of MNPs-treated tachyzoites. MNPs-treated infected mice revealed a statistically significant increase in the serum levels of both interferon gamma (IFN-γ) to 346.2 ± 4.6 pg/ml and reduced glutathione (GSH) to 8.83 ± 0.30 mg/dl that subsequently exerted malondialdehyde (MDA) quenching action. MNPs showed a superior promising antitoxoplasmic activity with respect to both spiramycin (SPI) and nZVI. To best of our knowledge, this is the first study of a bio-safe oral iron nanotherapeutic agent fabricated via an eco-friendly approach that offers promising potential against acute experimental toxoplasmosis.
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Affiliation(s)
- Nehal Nassef Hezema
- Department of Medical Parasitology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Marwa Moustafa Eltarahony
- Department of Environmental Biotechnology, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, New Borg El-Arab City, Alexandria, Egypt
| | - Sara Ahmed Abdel Salam
- Department of Medical Parasitology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
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12
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Devi B, Goswami M, Rabha S, Kalita S, Sarma HP, Devi A. Efficacious Sorption Capacities for Pb(II) from Contaminated Water: A Comparative Study Using Biowaste and Its Activated Carbon as Potential Adsorbents. ACS OMEGA 2023; 8:15141-15151. [PMID: 37151526 PMCID: PMC10157841 DOI: 10.1021/acsomega.3c00142] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 04/11/2023] [Indexed: 05/09/2023]
Abstract
Heavy-metal pollution is a persevering environmental menace, which demands the necessity of its removal by green and ecofriendly adsorbents. To combat this problem, discarded plant biomass can be used as an efficient substitute. Herein, a comparative study has been highlighted for the removal of Pb2+ ions using Euryale ferox Salisbury seed coat and its activated carbon, which is prepared by a first-time-reported activating agent that is a novel and non-hazardous bioresource. The batch investigation revealed a 99.9% removal efficiency of Pb(II) by the activated carbon compared to Euryale ferox Salisbury seed coat, which shows only an 89.5% removal efficiency at neutral pH. The adsorption mechanism is mainly a multilayered process, which involves electrostatic, van der Waals, and hydrogen bonding interactions. The adsorption equilibrium, kinetic, and thermodynamic studies were examined for the biosorbents, which revealed the adsorption process to be feasible, spontaneous, and exothermic with both physisorption and chemisorption adsorption mechanisms. The desorption study asserted the reusability of both the biosorbents to a maximum of three cycles.
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Affiliation(s)
- Bhaswati Devi
- Environmental
Chemistry Laboratory, Resource Management and Environment Section,
Life Science Division, Institute of Advanced
Study in Science and Technology, Guwahati 781035, Assam, India
| | - Manisha Goswami
- Environmental
Chemistry Laboratory, Resource Management and Environment Section,
Life Science Division, Institute of Advanced
Study in Science and Technology, Guwahati 781035, Assam, India
| | - Suprakash Rabha
- Environmental
Chemistry Laboratory, Resource Management and Environment Section,
Life Science Division, Institute of Advanced
Study in Science and Technology, Guwahati 781035, Assam, India
| | - Suravi Kalita
- Environmental
Chemistry Laboratory, Resource Management and Environment Section,
Life Science Division, Institute of Advanced
Study in Science and Technology, Guwahati 781035, Assam, India
- Homi
Bhabha Centre for Science Education, Tata
Institute of Fundamental Research, Mumbai 400088, Maharashtra, India
| | - Hari Prasad Sarma
- Department
of Environmental Science, Gauhati University, Guwahati 781014, Assam, India
| | - Arundhuti Devi
- Environmental
Chemistry Laboratory, Resource Management and Environment Section,
Life Science Division, Institute of Advanced
Study in Science and Technology, Guwahati 781035, Assam, India
- . Fax: +91-361-2273062
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13
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Bibi F, Sattar A, Hussain S, Waseem M. Tailoring the sorption properties of crystal violet by activated carbon extracted from waste onion. CHEMICAL PAPERS 2023. [DOI: 10.1007/s11696-023-02756-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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14
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Bate B, Cao J, Yang Y, Cao J, Zhang C, Zhang S. Investigation of Cu Adsorption and Migration with Spectral Induced Polarization in Activated Carbon. TOXICS 2023; 11:221. [PMID: 36976986 PMCID: PMC10057908 DOI: 10.3390/toxics11030221] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/21/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
In this paper, the adsorption process of copper ions on activated carbon (AC) was simulated in a column test. It was deduced that it is consistent with the pseudo-second-order model. Cation exchange was observed to be the major mechanism of Cu-AC interactions through scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR) measurements. Adsorption isotherms were fitted well using the Freundlich model. Adsorption thermodynamics at 298, 308, 318 K demonstrated that the adsorption process is spontaneous and endothermic. Spectral induced polarization (SIP) technique was used to monitor the adsorption process, and the double Cole-Cole model was used to analyze the SIP results. The normalized chargeability was proportional to the adsorbed copper content. Two measured relaxation times from the SIP testing were converted into the average pore sizes of 2, 0.8, 0.6, 100-110, 80-90, and 53-60 µm by the Schwartz equation, which are consistent with the measured pore sizes from both mercury intrusion porosimetry and scanning electron microscopy (SEM). The reduction in the pore sizes by SIP during the flow-through tests suggested that the adsorbed Cu2+ gradually migrated into small pores as with continued permeation of the influent. These results showcased the feasibility of using SIP technique in engineering practice involving the monitoring of copper contamination in land near a mine waste dump or in adjacent permeable reactive barriers.
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Affiliation(s)
- Bate Bate
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China
| | - Jingjing Cao
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China
| | - Yixin Yang
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China
| | - Junnan Cao
- Department of Civil Engineering and Construction, Georgia Southern University, Statesboro, GA 30458, USA
| | - Chi Zhang
- Department of Meteorology and Geophysics, University of Vienna, Josef-Holaubek-Platz 2 (UZA II), 1010 Vienna, Austria
| | - Shuai Zhang
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China
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15
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El-Hashemy MAES, Alotaibi NF. Purification of benzene-laden air by static adsorption of benzene onto activated carbon prepared from Diplotaxis acris biomass. BIOMASS CONVERSION AND BIOREFINERY 2023; 13:1763-1777. [DOI: 10.1007/s13399-021-01462-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 02/19/2021] [Accepted: 03/23/2021] [Indexed: 09/02/2023]
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16
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Obayomi KS, Lau SY, Zahir A, Meunier L, Zhang J, Dada AO, Rahman MM. Removing methylene blue from water: A study of sorption effectiveness onto nanoparticles-doped activated carbon. CHEMOSPHERE 2023; 313:137533. [PMID: 36528163 DOI: 10.1016/j.chemosphere.2022.137533] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 12/08/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Abstract
In this present study, silver (Ag) and titanium dioxide (TiO2) nanoparticles were successfully deposited on coconut shell-derived activated carbon (CSAC), to synthesize a novel nanocomposite (CSAC@AgNPs@TiO2NPs) for the adsorption of Methylene Blue (MB) dye from aqueous solution. The fabricated CSAC@AgNPs@TiO2NPs nanocomposite was analyzed by Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), Fourier-Transform Infrared Spectroscopy (FTIR), Transmission Electron Microscope (TEM) equipped with Energy Dispersive X-ray spectroscopy (EDS) detector, X-ray Photoelectron Spectroscope (XPS), and Brunauer-Emmett-Teller (BET). The successful deposition of AgNPs and TiO2NPs on CSAC surface was revealed by the TEM/EDX, SEM, and XPS analysis. The mesopore structure of CSAC@AgNPs@TiO2NPs has a BET surface area of 301 m2/g. The batch adsorption studies were conducted and the influence of different parameters, i.e., adsorbent dose, adsorption time, initial dye concentration, pH and temperature were investigated. The nonlinear isotherm and kinetic modelling demonstrated that adsorption data were best fitted by Sips isotherm and pseudo-second-order models, respectively. The maximum adsorption capacity of MB onto CSAC@AgNPs@TiO2NPs by the Sips model was 184 mg/g. Thermodynamic results revealed that the adsorption was endothermic, spontaneous and physical in nature. CSAC@AgNPs@TiO2NPs revealed that MB absorption by CSAC@AgNPs@TiO2NPs was spontaneous and endothermic. The uptake capacity of MB was influenced significantly by the presence of competing ions including, NO3-, HCO3, Ca2+, and Na+. Repeated tests indicated that the CSAC@AgNPs@TiO2NPs can be regenerated and reused six times before being discarded. The primary separation mechanism between MB dye and CSAC@AgNPs@TiO2NPs was the electrostatic interaction. Thus, CSAC@AgNPs@TiO2NPs was an outstanding material, which displayed good applicability in real water with ≥ 97% removal of MB dye.
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Affiliation(s)
- Kehinde Shola Obayomi
- Department of Chemical Engineering, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia.
| | - Sie Yon Lau
- Department of Chemical Engineering, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia
| | - Abdul Zahir
- National Textile Research Centre, National Textile University, Faisalabad, 37610, Pakistan
| | - Louise Meunier
- Department of Chemical Engineering, Queen's University, Kingston, K7L 3N6, Canada
| | - Jianhua Zhang
- Institute for Sustainable Industries and Liveable Cities, Victoria University, PO Box 14428, Melbourne, 8001, Vic., Australia
| | - Adewumi Oluwasogo Dada
- Industrial Chemistry Programme, Nanotechnology Laboratory, Department of Physical Sciences, Landmark University, P.M.B.1001, Omu-Aran, Kwara, Nigeria
| | - Mohammad Mahmudur Rahman
- Global Centre for Environmental Remediation (GCER), College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia; Department of General Educational Development, Faculty of Science and Information Technology, Daffodil International University, Ashulia, Savar, Dhaka, 1207, Bangladesh
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17
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Adsorptive Removal of Alizarin Red S onto Sulfuric Acid-Modified Avocado Seeds: Kinetics, Equilibrium, and Thermodynamic Studies. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/3137870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The present work evaluates the synthesis of a novel, inexpensive, and environmentally friendly chemically-treated avocado seed powder (CTASP) as an adsorbent in removing alizarin red S (ARS) from synthetic solution. By using a set of analytical techniques, including FTIR, XRD, EDX, RS, and SEM, the adsorbent was characterized for its physical and chemical properties. Batch study experiments were conducted to determine the effectiveness of the CTASP as an adsorbent. The maximum adsorption capacity of 67.08 mgg-1 was attained at optimum conditions of 3 gL-1 adsorbent dosage, pH 3, contact time of 30 min, and at temperature 303 K. After 30 minutes, the equilibrium was reached, and the experimental data was explained for isotherm, kinetic, and thermodynamic processes. The results indicated that pseudo-second-order kinetics and the Freundlich isotherm were the best fits for the data. The findings of the analysis of the thermodynamic parameters for the process showed that the system was an exothermic and spontaneous. According to the desorption studies, 0.1 M NaOH can be utilized as a separating reagent to desorb 90.53% of ARS that was adsorbed. Regeneration experiments were conducted to make the process more practical and affordable, and it was discovered that the CTASP adsorbent could be successfully regenerated up to four times. In comparison with other adsorbents, the current low-cost adsorbent had the exceptional regenerative capability and delivered multilayer adsorption capacity. Additionally, it has been demonstrated that the CTASP is an effective material for the detoxification of ARS dye from wastewater.
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Kiełbasa K, Bayar Ş, Varol EA, Sreńscek-Nazzal J, Bosacka M, Miądlicki P, Serafin J, Wróbel RJ, Michalkiewicz B. Carbon Dioxide Adsorption over Activated Carbons Produced from Molasses Using H 2SO 4, H 3PO 4, HCl, NaOH, and KOH as Activating Agents. Molecules 2022; 27:7467. [PMID: 36364295 PMCID: PMC9653830 DOI: 10.3390/molecules27217467] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 10/29/2022] [Accepted: 10/31/2022] [Indexed: 11/17/2023] Open
Abstract
Cost-effective activated carbons for CO2 adsorption were developed from molasses using H2SO4, H3PO4, HCl, NaOH, and KOH as activating agents. At the temperature of 0 °C and a pressure of 1 bar, CO2 adsorption equal to 5.18 mmol/g was achieved over activated carbon obtained by KOH activation. The excellent CO2 adsorption of M-KOH can be attributed to its high microporosity. However, activated carbon prepared using HCl showed quite high CO2 adsorption while having very low microporosity. The absence of acid species on the surface promotes CO2 adsorption over M-HCl. The pore size ranges that are important for CO2 adsorption at different temperatures were estimated. The higher the adsorption temperature, the more crucial smaller pores were. For 1 bar pressure and temperatures of 0, 10, 20, and 30 °C, the most important were pores equal and below: 0.733, 0.733, 0.679, and 0.536 nm, respectively.
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Affiliation(s)
- Karolina Kiełbasa
- Faculty of Chemical Technology and Engineering, Department of Catalytic and Sorbent Materials Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland
| | - Şahin Bayar
- Faculty of Engineering, Deptarment of Chemical Engineering, Eskisehir Technical University, Eskisehir 26555, Turkey
| | - Esin Apaydin Varol
- Faculty of Engineering, Deptarment of Chemical Engineering, Eskisehir Technical University, Eskisehir 26555, Turkey
| | - Joanna Sreńscek-Nazzal
- Faculty of Chemical Technology and Engineering, Department of Catalytic and Sorbent Materials Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland
| | - Monika Bosacka
- Faculty of Chemical Technology and Engineering, Department of Inorganic and Analytical Chemistry, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland
| | - Piotr Miądlicki
- Faculty of Chemical Technology and Engineering, Department of Catalytic and Sorbent Materials Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland
| | - Jarosław Serafin
- Department of Inorganic and Organic Chemistry, University of Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain
| | - Rafał J. Wróbel
- Faculty of Chemical Technology and Engineering, Department of Catalytic and Sorbent Materials Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland
| | - Beata Michalkiewicz
- Faculty of Chemical Technology and Engineering, Department of Catalytic and Sorbent Materials Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland
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Green Power Generation by Microbial Fuel Cells Using Pharmaceutical Wastewater as Substrate and Electroactive Biofilms (Bacteria/Biocarbon). J CHEM-NY 2022. [DOI: 10.1155/2022/1963973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this work, electroactive biofilms of Bacillus subtilis (B. subtilis) or Escherichia coli (E. coli) were supported on functionalized biocarbon (AB7-F), which was synthesized from waste leather and was used as catalysts to develop bioanodes for microbial fuel cells (MFCs). This way, bioanodes were fabricated and further evaluated in a three-electrode cell using pharmaceutical wastewater (PWW) as substrate. The electrochemical measurements showed a higher performance of the bioanode based on AB7-f+ B. subtilis to oxidize organic matter from PWW. The polarization curves in the dual-chamber MFC showed that AB7-f+ B. subtilis bioanode can generate an open circuit voltage of 602 mV and a power density of 77 mW m−2. During long-term tests of the MFC, a variation in performance was observed, with a maximum of 96.3 mW m−2 on day 7. Such variation was attributed to the development of more stable biofilm as well as consumption of some compounds metabolized by bacteria grown on the bioanode. The results showed that AB7-f+ B. subtilis can be used as bioanode for MFCs with PWW as substrate removing around 45% of the chemical oxygen demand (COD).
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Smart preparation of microporous carbons from spent coffee grounds. Comprehensive characterization and application in explosives removal from water samples. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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