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Eddine Attar A, Chaker H, Djennas M, Ondarts M, Fourmentin S. Investigation of Doehlert matrix conception in novel intrinsically conducting polymers based on selenium nanoparticles for wastewater treatment: Synthesis, characterization, kinetic and chemometric study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 319:124562. [PMID: 38823245 DOI: 10.1016/j.saa.2024.124562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 05/27/2024] [Accepted: 05/28/2024] [Indexed: 06/03/2024]
Abstract
The synthesis of robust intrinsically conducting polymers (ICPs) based on nanoparticles is becoming increasingly attractive to the research community due to the unique properties of these nanocomposites. Indeed, as organic semiconductors, ICPs combine both polymer and metal properties in a single structure. This study presents an innovative approach in which the Doehlert Matrix (DM) is applied to a novel ICP nanocomposite based on polyaniline (Pani) coupled with selenium (Se) loaded mesoporous titania (TiO2) for wastewater treatment by photocatalysis. It includes both the elaboration routes of ICP nanocomposites, characterization of materials by X-ray diffraction (XRD), BET analysis, thermogravimetric analysis (TGA), RAMAN spectroscopy and Fourier transform infrared spectroscopy (FTIR) and photodegradation of methylene blue (MB) as a representative of dye pollutant. In addition, the photocatalytic process has been optimized by a novel DM conception. The effect of the pH of the solution, the catalyst dosage and the initial pollutant concentration was investigated. The optimum conditions were found to be: initial MB concentration of 15 mg/L, the catalyst dosage of 69 mg and pH of 9.6 with an operating time of 75 min, with a coefficient of determination R2 equal to 0.9985. The removal efficiency of BM was close to 97 %. The study shows that the new ICP nanocomposites improve the photocatalytic efficiency compared to pure titania and/or pure Pani. In addition, as the ternary Pani-Se-TiO2 nanocomposite could be obtained from a low-cost synthesis, it is a very promising material for use in wastewater treatment.
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Affiliation(s)
- Alaa Eddine Attar
- Laboratoire de Catalyse et Synthèse en Chimie Organique BP 119, Université de Tlemcen, Tlemcen 13000, Algérie; Université Belhadj Bouchaib de Ain Temouchent, BP 284, 46000, Ain Temouchent, Algérie
| | - Hanane Chaker
- Laboratoire de Catalyse et Synthèse en Chimie Organique BP 119, Université de Tlemcen, Tlemcen 13000, Algérie; Université Belhadj Bouchaib de Ain Temouchent, BP 284, 46000, Ain Temouchent, Algérie.
| | - Mustapha Djennas
- Faculté des sciences économiques, BP 226, Université de Tlemcen, Tlemcen 13000, Algérie
| | - Michel Ondarts
- Université Savoie Mont Blanc, CNRS, Laboratoire des Procédés Énergétiques du Bâtiment, 73000 Chambéry, France
| | - Sophie Fourmentin
- Université Littoral Côte d'Opale, UR 4492, UCEIV, Unité de Chimie Environnementale et Interactions sur le Vivant, F-59140 Dunkerque, France
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Kumari S, Chowdhry J, Sharma P, Agarwal S, Chandra Garg M. Integrating artificial neural networks and response surface methodology for predictive modeling and mechanistic insights into the detoxification of hazardous MB and CV dyes using Saccharum officinarum L. biomass. CHEMOSPHERE 2023; 344:140262. [PMID: 37793550 DOI: 10.1016/j.chemosphere.2023.140262] [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: 05/15/2023] [Revised: 08/25/2023] [Accepted: 09/22/2023] [Indexed: 10/06/2023]
Abstract
The presence of dye pollutants in industrial wastewater poses significant environmental and health risks, necessitating effective treatment methods. The optimal adsorption treatment of methylene blue (MB) and crystal violet (CV) dye-simulated wastewater utilising Saccharum officinarum L presents a key challenge in the selection of appropriate modelling approaches. While RSM and ANN models are frequently used, there is a noticeable knowledge gap when it comes to evaluating their relative strengths and weaknesses in this context. The study compared the predictive abilities of response surface methodology (RSM) and artificial neural network (ANN) for the adsorption treatment of MB and CV dye-simulated wastewater using Saccharum officinarum L. The process experimental variables were modelled and predicted using a three-layer artificial neural network trained using the Levenberg-Marquard backpropagation algorithm and 30 central composite designs (CCD). The adsorption study used a specific mechanism, which led to noteworthy maximum removals of 98.3% and 98.2% for dyes (MB and CV), respectively. The RSM model achieved an impressive R2 of 0.9417, while the ANN model achieved 0.9236 in MB. Adsorption is commonly used to remove colour from many different materials. Saccharum officinarum L., a byproduct of sugarcane processing, has shown potential as an efficient and ecological adsorbent in this environment. The purpose of this study is to evaluate sugarcane bagasse's potential as an adsorbent for the removal of dyes MB and CV from industrial wastewater, providing a long-term strategy for reducing dye pollution. Due to its beneficial economic and environmental characteristics, the Saccharum officinarum L. adsorbent has prompted research into sustainable resources with low pollutant indices.
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Affiliation(s)
- Sheetal Kumari
- Amity Institute of Environmental Science (AIES), Amity University Uttar Pradesh, Sector-125, Noida, 201313, Gautam Budh Nagar, India
| | | | - Pinki Sharma
- Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Smriti Agarwal
- Motilal Nehru National Institute of Technology Allahabad, Prayagraj, Uttar Pradesh, India
| | - Manoj Chandra Garg
- Amity Institute of Environmental Science (AIES), Amity University Uttar Pradesh, Sector-125, Noida, 201313, Gautam Budh Nagar, India.
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3
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Zaib Q, Park S, Behera SK, Mahanty B, Zafar M, Park HS, Kyung D. Optimization of low-grade coal and refuse-derived fuel blends for improved co-combustion behavior in coal-fired power plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:117238-117249. [PMID: 37864701 DOI: 10.1007/s11356-023-30471-2] [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: 04/07/2023] [Accepted: 10/10/2023] [Indexed: 10/23/2023]
Abstract
This study is aimed at utilizing three waste materials, i.e., solid refuse fuel (SRF), tire derived fuel (TDF), and sludge derived fuel (SDF), as eco-friendly alternatives to coal-only combustion in co-firing power plants. The contribution of waste materials is limited to ≤5% in the composition of the mixed fuel (coal + waste materials). Statistical experimental design and response surface methodology are employed to investigate the effect of mixed fuel composition (SRF, TDF, and SDF) on gross calorific value (GCV) and ash fusion temperature (AFT). A quadratic model is developed and statistically verified to apprehend mixed fuel constituents' individual and combined effects on GCV and AFT. Constrained optimization of fuel blend, i.e., GCV >1,250 kcal/kg and AFT >1,200 °C, using the polynomial models projected the fuel-blend containing 95% coal with 3.84% SRF, 0.35% TDF, and 0.81% SDF. The observed GCV of 5,307 kcal/kg and AFT of 1225 °C for the optimized blend were within 1% of the model predicted values, thereby establishing the robustness of the models. The findings from this study can foster sustainable economic development and zero CO2 emission objectives by optimizing the utilization of waste materials without compromising the GCV and AFT of the mixed fuels in coal-fired power plants.
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Affiliation(s)
- Qammer Zaib
- School of Civil and Environmental Engineering, University of Ulsan, Daehak-ro 93, Nam-gu, Ulsan, 44610, Republic of Korea
| | - Sangchul Park
- School of Civil and Environmental Engineering, University of Ulsan, Daehak-ro 93, Nam-gu, Ulsan, 44610, Republic of Korea
| | - Shishir Kumar Behera
- Industrial Ecology Research Group, School of Chemical Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu, 632 014, India
| | - Biswanath Mahanty
- Division of Biotechnology, Karunya Institute of Technology & Sciences, Coimbatore, Tamil Nadu, 641114, India
| | - Mohd Zafar
- Department of Applied Biotechnology, College of Applied Science and Pharmacy, University of Technology and Applied Sciences-Sur, Sur, 411, Sultanate of Oman
| | - Hung-Suck Park
- School of Civil and Environmental Engineering, University of Ulsan, Daehak-ro 93, Nam-gu, Ulsan, 44610, Republic of Korea
| | - Daeseung Kyung
- School of Civil and Environmental Engineering, University of Ulsan, Daehak-ro 93, Nam-gu, Ulsan, 44610, Republic of Korea.
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Caetano GC, Andrade LADE, Martins PR, Ostroski IC. Optimization of the adsorption and desorption processes of nickel octaethylporphyrin in carbon-based adsorbents. AN ACAD BRAS CIENC 2023; 95:e20211598. [PMID: 37341271 DOI: 10.1590/0001-3765202320211598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 06/14/2022] [Indexed: 06/22/2023] Open
Abstract
Despite being little explored for petroporphyrins recovery from oils and bituminous shales, adsorption and desorption processes can be feasible alternatives to obtain a similar synthetic material, and to characterize their original organic materials. Experimental designs were used to analyze the effects of qualitative (e.g., type of adsorbent, solvent, and diluent) and quantitative (e.g., temperature and solid/liquid ratio) variables on the adsorptive and desorptive performance regarding nickel octaethylporphyrin (Ni-OEP) removal using carbon-based adsorbents. The evaluation variables, adsorption capacity (qe ) and desorption percentage (%desorption ) were optimized by means of the Differential Evolution algorithm. The most efficient adsorbent for removing/recovery Ni-OEP was activated-carbon coconut shell, in which dispersive π-π type and acid-base interactions were likely formed. The highest values of qe and %desorption were obtained using toluene as solvent, chloroform as diluent, 293 K as temperature, and 0.5 mg.mL-1 as solid/liquid ratio for adsorption, and a higher temperature (323 K) and lower solid/liquid ratio (0.2 mg.mL-1) for desorption. The optimization process resulted in qe of 6.91 mg.g-1 and %desorption of 35.2%. In the adsorption-desorption cycles, approximately 77% of the adsorbed porphyrins were recovered. The results demonstrated the potential of carbon-based materials as adsorbent materials for obtaining porphyrin compounds from oils and bituminous shales.
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Affiliation(s)
- Gabriela Costa Caetano
- Federal University of Goiás, Institute of Chemistry, Av. Esperança, s/n, 74690-900 Goiânia, GO, Brazil
| | - Laiane Alves DE Andrade
- Federal University of Mato Grosso do Sul, Department of Production Engineering, Av. Antônio Joaquim de Moura Andrade, 2310, 79750-000 Nova Andradina, MS, Brazil
| | - Paulo Roberto Martins
- Federal University of Goiás, Institute of Chemistry, Av. Esperança, s/n, 74690-900 Goiânia, GO, Brazil
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Optimal Design of Carbon-Based Polymer Nanocomposites Preparation Based on Response Surface Methodology. Polymers (Basel) 2023; 15:polym15061494. [PMID: 36987274 PMCID: PMC10052088 DOI: 10.3390/polym15061494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 02/21/2023] [Accepted: 02/23/2023] [Indexed: 03/19/2023] Open
Abstract
Response surface methodology (RSM) and central composite design (CCD) were used to improve the preparation of carbon nanotube and graphene (CNT-GN)-sensing unit composite materials in this study. Four independent variable factors (CNT content, GN content, mixing time, and curing temperature) were controlled at five levels, and 30 samples were generated using the multivariate control analysis technique. On the basis of the experimental design, semi-empirical equations were developed and utilized to predict the sensitivity and compression modulus of the generated samples. The results reveal a strong correlation between the experimental and expected values of sensitivity and the compression modulus for the CNT-GN/RTV (room-temperature-vulcanized silicone rubber) polymer nanocomposites fabricated using different design strategies. The correlation coefficients for the sensitivity and compression modulus are R2 =0.9634 and R2=0.9115, respectively. The ideal preparation parameters of the composite in the experimental range include a CNT content of 1.1 g, a GN content of 1.0 g, a mixing time of 15 min, and a curing temperature of 68.6 °C, according to theoretical predictions and experimental findings. At 0~30 kPa, the CNT-GN/RTV-sensing unit composite materials may reach a sensitivity of 0.385 kPa−1 and a compressive modulus of 601.567 kPa. This provides a new idea for the preparation of flexible sensor cells and reduces the time and economic cost of experiments.
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Lala M, Ntamu T, Adesina O, Popoola L, Yusuff A, Adeyi A. ADSORPTION OF HEXAVALENT CHROMIUM FROM AQUEOUS SOLUTION USING CATIONIC MODIFIED RICE HUSK: PARAMETRIC OPTIMIZATION VIA TAGUCHI DESIGN APPROACH. SCIENTIFIC AFRICAN 2023. [DOI: 10.1016/j.sciaf.2023.e01633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023] Open
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7
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Memetova A, Tyagi I, Singh L, Karri RR, Tyagi K, Kumar V, Memetov N, Zelenin A, Tkachev A, Bogoslovskiy V, Shigabaeva G, Galunin E, Mubarak NM, Agarwal S. Nanoporous carbon materials as a sustainable alternative for the remediation of toxic impurities and environmental contaminants: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:155943. [PMID: 35577088 DOI: 10.1016/j.scitotenv.2022.155943] [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: 03/04/2022] [Revised: 05/10/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
Due to rapidly deteriorating water resources, the world is looking forward to a sustainable alternative for the remediation of noxious pollutants such as heavy metals and organic and gaseous contaminants. To address this global issue of environmental pollution, nanoporous carbon materials (NPCMs) can be used as a one-stop solution. They are widely applied as adsorbents for many toxic impurities and environmental contaminants. The present review provides a detailed overview of the role of different synthesis factors on the porous characteristics of carbon materials, activating agents, reagent-precursor ratio and their potential application in the remediation. Findings revealed that synthetic parameters result in the formation of microporous NPCMs (SBET: >4000 m3/g; VTotal (cm3/g) ≥ 2; VMicro (cm3/g) ≥ 1), micromesoporous (SBET: >2500 m3/g; VTotal (cm3/g) ≥ 1.5; VMicro (cm3/g) ≥ 0.7) and mesoporous (SBET: >2500 m3/g; VTotal (cm3/g) ≥ 1.5; VMicro (cm3/g) ≥ 0.5) NPCMs. Moreover, it was observed that a narrow pore size distribution (0.5-2.0 nm) yields excellent results in the remediation of noxious contaminants. Further, chemical activating agents such as NaOH, KOH, ZnCl2, and H3PO4 were compared. It was observed that activating agents KОН, H3PO4, and ZnCl2 were generally used and played a significant role in the possible large-scale production and commercialization of NPCMs. Thus, it can be interpreted that with a well-planned strategy for the synthesis, NPCMs with a "tuned" porosity for a specific application, in particular, microporosity for the accumulation and adsorption of energetically important gases (CO2, CH4, H2), micro-mesoporosity and mesoporosity for high adsorption capacity for towards metal ions and a large number of dyes, respectively.
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Affiliation(s)
- Anastasia Memetova
- Department of Technology and Methods of Nanoproducts Manufacturing, Tambov State Technical University, 106 Sovetskaya St., Tambov 392000, Russian Federation
| | - Inderjeet Tyagi
- Centre for DNA Taxonomy, Molecular Systematics Division, Zoological Survey of India, Kolkata 700 053, India.
| | - Lipi Singh
- Department of Environmental Engineering, Delhi Technological University, New Delhi 110042, India
| | - Rama Rao Karri
- Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan BE1410, Brunei Darussalam
| | - Kaomud Tyagi
- Centre for DNA Taxonomy, Molecular Systematics Division, Zoological Survey of India, Kolkata 700 053, India
| | - Vikas Kumar
- Centre for DNA Taxonomy, Molecular Systematics Division, Zoological Survey of India, Kolkata 700 053, India
| | - Nariman Memetov
- Department of Technology and Methods of Nanoproducts Manufacturing, Tambov State Technical University, 106 Sovetskaya St., Tambov 392000, Russian Federation
| | - Andrey Zelenin
- Department of Technology and Methods of Nanoproducts Manufacturing, Tambov State Technical University, 106 Sovetskaya St., Tambov 392000, Russian Federation
| | - Alexey Tkachev
- Department of Technology and Methods of Nanoproducts Manufacturing, Tambov State Technical University, 106 Sovetskaya St., Tambov 392000, Russian Federation
| | - Vladimir Bogoslovskiy
- Research School of Chemistry & Applied Biomedical Sciences, Tomsk Polytechnic University, 30 Lenina Ave., Tomsk 634050, Russian Federation
| | - Gulnara Shigabaeva
- Department of Organic and Ecological Chemistry, University of Tyumen, 6 Volodarskogo St., Tyumen 625003, Russian Federation
| | - Evgeny Galunin
- Department of Organic and Ecological Chemistry, University of Tyumen, 6 Volodarskogo St., Tyumen 625003, Russian Federation
| | - Nabisab Mujawar Mubarak
- Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan BE1410, Brunei Darussalam
| | - Shilpi Agarwal
- Center for Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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Senosy IA, Lu ZH, Zhou DD, Abdelrahman TM, Chen M, Zhuang LY, Liu X, Cao YW, Li JH, Hua Yang Z. Construction of a magnetic solid-phase extraction method for the analysis of azole pesticides residue in medicinal plants. Food Chem 2022; 386:132743. [PMID: 35364494 DOI: 10.1016/j.foodchem.2022.132743] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 11/26/2022]
Abstract
In this work, a sensitive and cost-effective method for the quantitative analysis of azole pesticides residues in six medicinal plants was established based on magnetic cyclodextrin crosslinked with tetrafluoroterephthalonitrile (Fe3O4@TFN-CDPs) coupled with high-performance liquid chromatography (HPLC). Through characterization analysis, the outer shell of Fe3O4@TFN-CDPs has observed coating with a network of the polymer and forming a core-shell structure. Under the optimum conditions, the limits of detection (LODs) and limits of qualification (LOQs) of target pesticides were ranged from 0.011 to 0.106 µg Kg-1 and from 0.036 to 0.354 µg Kg-1, respectively. Finally, the achieved recoveries of pesticides in six medicinal samples fluctuated from 60.1% to 102.3%. Altogether, this method based on Fe3O4@TFN-CDPs composites provided a new idea for the analysis of trace pesticides in complicated matrices.
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Affiliation(s)
- Ibrahim A Senosy
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China; Faculty of Agriculture, Department of Plant Protection, Fayoum University, Fayoum 63514, Egypt
| | - Zhi-Heng Lu
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China
| | - Dong-Dong Zhou
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China
| | - Talat M Abdelrahman
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China; Faculty of Agriculture, Department of Plant Protection, Al-Azhar University, Assiut 71524, Egypt
| | - Min Chen
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China
| | - Lv-Yun Zhuang
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiao Liu
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China
| | - Yi-Wen Cao
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China
| | - Jian-Hong Li
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhong- Hua Yang
- College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China.
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9
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Natural ball clay ceramic membrane fabrication using full factorial design for screening. Chem Eng Technol 2022. [DOI: 10.1002/ceat.202200093] [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]
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10
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Pereira de Freitas LV, de Paula Terra G, de Souza Santos S, Sicupira LC, Silvério FO. Optimization and validation of liquid-liquid extraction with low-temperature purification (LLE-LTP) for determining fluopyram fungicide in water samples using HPLC-DAD. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:2945-2952. [PMID: 35861165 DOI: 10.1039/d2ay01004f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Fluopyram is a fungicide and nematicide that belongs to the chemical group of benzamides, which act as succinate dehydrogenase inhibitors (SDHIs) on the mitochondrial respiratory chain of fungi. Despite being well known in several countries, there are few studies involving the optimization and validation of extraction methods for determining fluopyram in water samples. Therefore, this study aimed to optimize and validate liquid-liquid extraction with low-temperature purification (LLE-LTP) to determine fluopyram fungicide in water samples using high-performance liquid chromatography with diode array detection (HPLC-DAD). A two-level full factorial design was employed to optimize LLE-LTP which enabled achieving a recovery rate close to 100% and relative standard deviations (RSD) < 10.0%. The validation showed that the extraction method may be considered selective, precise, accurate, and linear in the range of 6.0 to 200 μg L-1. The LOD and LOQ were 4.0 and 6.0 μg L-1, respectively, proving the efficiency of this method for trace level determination of this fungicide in water samples. LLE-LTP coupled to HLPC-DAD analysis showed a matrix effect of less than 8% and it was applied in monitoring 20 environmental water samples, but no fluopyram residue was detected in the samples.
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Affiliation(s)
- Lucas Victor Pereira de Freitas
- School of Pharmaceutical Sciences of Ribeirão Preto, Universidade de São Paulo, 14040-903, Ribeirão Preto, São Paulo, Brazil
| | - Gleysson de Paula Terra
- Department of Chemistry, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Minas Gerais, Brazil
| | - Silas de Souza Santos
- Institute of Agricultural Sciences, Universidade Federal de Minas Gerais, 39404-547, Montes Claros, Minas Gerais, Brazil.
| | - Lázaro Chaves Sicupira
- Institute of Engineering, Science and Technology, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 39447-790, Janaúba, Minas Gerais, Brazil
| | - Flaviano Oliveira Silvério
- Institute of Agricultural Sciences, Universidade Federal de Minas Gerais, 39404-547, Montes Claros, Minas Gerais, Brazil.
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11
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Parametric Study of Methyl Orange Removal Using Metal–Organic Frameworks Based on Factorial Experimental Design Analysis. ENERGIES 2022. [DOI: 10.3390/en15134642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Wastewater treatment plants (WWTPs) are one of the most energy-intensive industries. Every stage of wastewater treatment consumes energy, which is the primary contributor to WWTP costs. Adsorbents and process optimization are critical for energy savings. The removal of dyes from industrial wastewater by adsorption using commercially available adsorbents is inefficient. Metal–organic frameworks (MOFs) have outstanding properties that can improve separation performance over current commercial adsorbents, and thus, these materials represent a milestone in improving dye removal in water treatment methods. In this work, three types of metal–organic frameworks (Fe-BTC, Cu-BTC, and ZIF-8) have been investigated as prospective adsorbents for methyl orange removal from water in batch setups. The results showed that at 15 mg/L MO initial concentration and 100 mg dosage, Fe-BTC had the highest removal efficiency of 91%, followed by ZIF-8 (63%), and finally Cu-BTC (35%), which exhibited structural damage due to its instability in water. Fe-BTC maintained consistent adsorption capacity over a wide range of pH values. Furthermore, a 23 full factorial design analysis was implemented to evaluate the conditions for maximum MO-removal efficiency. The main effects, interaction effects, analysis of variance (ANOVA), and the Pareto chart were reported. The statistical analysis demonstrated that the MOF type was the most significant factor, followed by dosage and initial concentration. The analysis indicated that the type of MOF and dosage had a positive effect on the removal efficiency, while the initial concentration had a negative effect. The two-way and three-way interactions were also found to be significant.
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12
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Sarrai AE, Belaissa Y, Kirdi R, Hanini S, Szabó T, Nagy L. Modeling and optimization of Tylosin adsorption using dehydrated wheat bran: adsorption behaviors, kinetic and thermodynamic studies. REACTION KINETICS MECHANISMS AND CATALYSIS 2022. [DOI: 10.1007/s11144-022-02241-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Ahmad T, Danish M. A review of avocado waste-derived adsorbents: Characterizations, adsorption characteristics, and surface mechanism. CHEMOSPHERE 2022; 296:134036. [PMID: 35202667 DOI: 10.1016/j.chemosphere.2022.134036] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/06/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
Avocado is one of the most important fruits with a high nutritional content; this fruit is consumed and cultivated worldwide. It is originally grown in Central America and the West Indies islands. But it is now cultivated in the tropical and subtropical regions of the world. Avocado waste is an abundantly available raw material that can be converted into adsorbents to remove different pollutants from aqueous solutions. This review article explores the utilization of avocado waste as raw material to develop an efficient adsorbent and its use against various toxicants. Many research papers have been published on the use of avocado waste-derived adsorbents in the recent past. The factors that affect the adsorption processes are examined in light of published references. Some critical adsorption parameters, such as equilibrium (isotherms), kinetics, and thermodynamics, have been reported in the published literature; these parameters and their data are critically discussed. The characterization, mechanism, and surface chemistry of avocado waste-derived adsorbents are also discussed. To date, no review article on avocado waste-derived adsorbents is available, where researchers can get an overview of the preparation, characterization, and adsorption attributes of avocado waste adsorbents against various pollutants. Recent literature demonstrates the effective utilization of avocado waste as a cleaner and sustainable raw material for the production of adsorbents.
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Affiliation(s)
- Tanweer Ahmad
- Department of Chemistry, School of Mathematics and Natural Science, The Copperbelt University, Kitwe, Zambia
| | - Mohammed Danish
- Bioresource Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Minden Campus, Penang, 11800, Pulau Pinang, Malaysia.
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14
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Rashtbari Y, Afshin S, Hamzezadeh A, Gholizadeh A, Ansari FJ, Poureshgh Y, Fazlzadeh M. Green synthesis of zinc oxide nanoparticles loaded on activated carbon prepared from walnut peel extract for the removal of Eosin Y and Erythrosine B dyes from aqueous solution: experimental approaches, kinetics models, and thermodynamic studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:5194-5206. [PMID: 34417700 DOI: 10.1007/s11356-021-16006-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
Water contamination due to release of dye containing effluents is one of the environmental problems of serious concern today. The present study investigate the green synthesis of zinc oxide nanoparticles (ZnO-NPs) doped on activated carbon (AC) prepared from walnut peel extract and to estimate its efficiency in the removal of Eosin Y (Eo-Y) and Erythrosine B (Er-B) from its aqueous solution. The synthesized AC-ZnO was identified by field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), and the Brunauer-Emmett-Teller. The influence of various parameters such as pH, dosage of AC-ZnO, contact time, and concentrations of Eo-Y and Er-B was also studied. The pH 3 was observed as the optimum pH while the equilibrium was noticed to reach in 30 min at dosage of 1 g/L and initial concentration 100 mg/L for Eo-Y and Er-B adsorption onto AC-ZnO. The maximum adsorption capacity of Eo-Y and Er-B onto AC-ZnO was found to be 163.9 and 144.92 mg/g (and removal efficiencies of 95.11 and 98.31 %), respectively. The process of Eo-Y and Er-B adsorption on AC-ZnO was observed to be depended on the pseudo-second-order kinetic model which indicates chemisorption processes. Langmuir adsorption isotherm model test described the removal of Eo-Y and Er-B on AC-ZnO. The thermodynamic data indicated that the adsorption was endothermic process. Also, the values, SBET and VTOTAL, for the AC-ZnO were equal to 725.65 m2/g and 0.6004 cm3/g, respectively. The results of this study exhibited that AC-ZnO was a very effective method that can be used for the removal of Eo-Y and Er-B from aqueous solutions.
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Affiliation(s)
- Yousef Rashtbari
- Students Research Committee, Faculty of Health, Ardabil University of Medical Sciences, Ardabil, Iran
- Department of Environmental Health Engineering, School of Health, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Shirin Afshin
- Department of Environmental Health Engineering, School of Health, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Asghar Hamzezadeh
- Department of Environmental Health Engineering, School of Health, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Abdolmajid Gholizadeh
- Department of Environmental Health Engineering, School of Public Health, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Farshid Jaberi Ansari
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Yousef Poureshgh
- Department of Environmental Health Engineering, School of Health, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Mehdi Fazlzadeh
- Social Determinants of Health Research Center, Ardabil University of Medical Sciences, Ardabil, Iran.
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15
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Moosavi S, Manta O, El-Badry YA, Hussein EE, El-Bahy ZM, Mohd Fawzi NFB, Urbonavičius J, Moosavi SMH. A Study on Machine Learning Methods' Application for Dye Adsorption Prediction onto Agricultural Waste Activated Carbon. NANOMATERIALS 2021; 11:nano11102734. [PMID: 34685171 PMCID: PMC8540925 DOI: 10.3390/nano11102734] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/01/2021] [Accepted: 10/11/2021] [Indexed: 11/25/2022]
Abstract
The adsorption of dyes using 39 adsorbents (16 kinds of agro-wastes) were modeled using random forest (RF), decision tree (DT), and gradient boosting (GB) models based on 350 sets of adsorption experimental data. In addition, the correlation between variables and their importance was applied. After comprehensive feature selection analysis, five important variables were selected from nine variables. The RF with the highest accuracy (R2 = 0.9) was selected as the best model for prediction of adsorption capacity of agro-waste using the five selected variables. The results suggested that agro-waste characteristics (pore volume, surface area, agro-waste pH, and particle size) accounted for 50.7% contribution for adsorption efficiency. The pore volume and surface area are the most important influencing variables among the agro-waste characteristics, while the role of particle size was inconspicuous. The accurate ability of the developed models’ prediction could significantly reduce experimental screening efforts, such as predicting the dye removal efficiency of agro-waste activated carbon according to agro-waste characteristics. The relative importance of variables could provide a right direction for better treatments of dyes in the real wastewater.
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Affiliation(s)
- Seyedehmaryam Moosavi
- Department of Chemistry and Bioengineering, Vilnius Gediminas Technical University, 10223 Vilnius, Lithuania;
- Correspondence:
| | - Otilia Manta
- Romanian Academy, Center for Financial and Monetary Research “Victor Slavescu”, 050711 Bucharest, Romania;
- Research Department, Romanian-American University, 012101 Bucharest, Romania
| | - Yaser A. El-Badry
- Chemistry Department, Faculty of Science, Taif University, Khurma, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Enas E. Hussein
- National Water Research Centre, P.O. Box 74, Shubra EI-Kheima 13411, Egypt;
| | - Zeinhom M. El-Bahy
- Chemistry Department, Faculty of Science, Al-Azhar University, Cairo 11884, Egypt;
| | - Noor fariza Binti Mohd Fawzi
- Nanotechnology & Catalysis Research Centre (NANOCAT), Institute for Advanced Studies (IAS), University for Malaya (UM), Kuala Lumpur 50603, Malaysia;
| | - Jaunius Urbonavičius
- Department of Chemistry and Bioengineering, Vilnius Gediminas Technical University, 10223 Vilnius, Lithuania;
| | - Seyed Mohammad Hossein Moosavi
- Faculty of Engineering, Centre for Transportation Research (CTR), University of Malaya (UM), Kuala Lumpur 50603, Malaysia;
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16
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Kamboh MA, Arain SS, Jatoi AH, Sherino B, Algarni TS, Al-Onazi WA, Al-Mohaimeed AM, Rezania S. Green sporopollenin supported cyanocalixarene based magnetic adsorbent for pesticides removal from water: Kinetic and equilibrium studies. ENVIRONMENTAL RESEARCH 2021; 201:111588. [PMID: 34175289 DOI: 10.1016/j.envres.2021.111588] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 06/19/2021] [Accepted: 06/21/2021] [Indexed: 06/13/2023]
Abstract
In this study, magnetic sporopollenin supported cyanocalixarene (MSP-CyCalix) nanocomposite was synthesized and introduced as an adsorbent material for the removal of pesticides from aqueous media. MSP-CyCalix was characterized by different analytical techniques FTIR, SEM, EDX, BET, VSMand TEM. Chlorpyrifos and hexaconazole pesticides were chosen as model analytes solutions for testing the adsorption efficiency of MSP-CyCalix adsorbent. The adsorption results showed that the incorporated cyano functional groups significantly increased the chemical reactivity and adsorption capacity for pesticides. To obtain the highest possible performance, experimental parameters such as pH, salt, dosage and time were optimized. Adsorption kinetics and isotherms models showed that pesticide adsorption process was well fitted with the pseudo-second-order and Langmuir models with a maximum adsorption capacity of 13.88 mg g-1 and 12.34 mg g-1 and a removal efficiency of >90% for both pesticides. Lastly, MSP-CyCalix maintained a removal efficiency of >80% for ten cycles and 60% after the eleventh cycles of usage. The results proved that MSP-CyCalix nanocomposite can be used as an efficient adsorbent for the removal of pesticide residues from water.
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Affiliation(s)
- Muhammad Afzal Kamboh
- Department of Chemistry, Shaheed Benazir Bhutto University, Shaheed Benazirabad, Sindh, Pakistan.
| | - Sadaf Sadia Arain
- Department of Chemistry, Shaheed Benazir Bhutto University, Shaheed Benazirabad, Sindh, Pakistan
| | - Ashique Hussain Jatoi
- Department of Chemistry, Shaheed Benazir Bhutto University, Shaheed Benazirabad, Sindh, Pakistan
| | - Bibi Sherino
- Department of Chemistry, Sardar Bahadur Khan Women University, Quetta, Balochistan, Pakistan
| | - Tahani Saad Algarni
- Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh, 11495, Saudi Arabia
| | - Wedad A Al-Onazi
- Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh, 11495, Saudi Arabia
| | - Amal M Al-Mohaimeed
- Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh, 11495, Saudi Arabia
| | - Shahabaldin Rezania
- Department of Environment and Energy, Sejong University, Seoul, 05006, South Korea.
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Siew WY, Abu Bakar NHH, Abu Bakar M, Zainal Abidin A. Influence of various Cu/Fe ratios on the surface properties of green synthesized Cu-Fe-BTC and it`s relation to methylene blue adsorption. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125846. [PMID: 34492799 DOI: 10.1016/j.jhazmat.2021.125846] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 04/05/2021] [Accepted: 04/06/2021] [Indexed: 06/13/2023]
Abstract
The incorporation of different percentages of Fe2+ into copper benzene-1,3,5-tricarboxylate (CuBTC) was successfully carried out at room-temperature synthesis with water as the only solvent. The XRD and XPS analysis shows that the Fe2+ were substituted into the paddlewheel structure. The incorporation of 18% Fe2+ into CuBTC can increase the surface area and porosity of the framework. The BET surface area of Cu82Fe18BTC (1240 m2/g) was significantly higher than CuBTC (708 m2/g). Further increase in the Fe2+ percentage will reduce the surface area of the compound. The presence of Fe2+ in the framework successfully disturbs the pore formation and widens the pore size on the surface of these compounds. This as well as the pHpzc, which is related to the surface acidity of the resulting bimetallic organic framework (BMOF), play an important role in the adsorption process. Cu53Fe47BTC with an adsorption capacity of 94.42 mg/g shows approximately 6 times greater adsorption capacity against MB compared to CuBTC. This shows that by utilizing a different ratio of Cu and a second metal, it is possible to effectively design the surface morphology of BMOF for specific applications.
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Affiliation(s)
- W Y Siew
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - N H H Abu Bakar
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia.
| | - M Abu Bakar
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - A Zainal Abidin
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia
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Mosavi SH, Zare‐Dorabei R, Bereyhi M. Rapid and Effective Ultrasonic‐Assisted Adsorptive Removal of Congo Red onto MOF‐5 Modified by CuCl
2
in Ambient Conditions: Adsorption Isotherms and Kinetics Studies. ChemistrySelect 2021. [DOI: 10.1002/slct.202100540] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Seyed Hossein Mosavi
- Research Laboratory of Spectrometry & Micro and Nano Extraction Department of Chemistry Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Rouholah Zare‐Dorabei
- Research Laboratory of Spectrometry & Micro and Nano Extraction Department of Chemistry Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Mohammad Bereyhi
- Research Laboratory of Spectrometry & Micro and Nano Extraction Department of Chemistry Iran University of Science and Technology Tehran 16846-13114 Iran
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19
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Mohanta J, Kumari R, Qaiyum MA, Dey B, Dey S. Alkali assisted hydrophobic reinforcement of coconut fiber for enhanced removal of cationic dyes: equilibrium, kinetics, and thermodynamic insight. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2021; 23:1423-1431. [PMID: 33813963 DOI: 10.1080/15226514.2021.1901850] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The present study illustrates enhanced removal of methylene blue (MB) and malachite green (MG) from water using alkali-activated coconut fiber (ACF) as adsorbent. Alkali activation effectively reduces the lignocellulosic components present within coco-fiber which in turn reinforces the coco-fiber to become more water-stable. The material was characterized by FTIR, SEM-EDS, BET, XRD, and pHZPC. BET surface area was found to be 10.901 m2 g-1, whereas pHZPC of the material is 6.05. FESEM images reveal rod-like morphology. Batch experiments were optimized with respect to contact time (0-120 min), temperature (288-308 K), pH (3-10), dose (1-5 g) and input dye concentration (10-50 mg L-1). The maximum adsorption coefficient was found to be 133.11 and 110.74 mg g-1 for MB and MG respectively. Adsorptions are best described by pseudo-second-order kinetics (kMB = 1.712, R2 = 0.999; kMG = 1.399, R2 = 0.999) and Langmuir isotherm model (R2 = 0.999). Thermodynamic data suggests a spontaneous (ΔG, -14 kJ mol-1) and feasible process. Spent material could be regenerated by using 0.5 M HCl. Up to 50% retention of activities was seen after five cycles. It can be concluded that alkali-activated coconut fiber is an economic and sustainable choice for dye removal. Novelty statement: Spent coconut was converted into an effective biosorbent by simple alkali activation under ambient conditions to increase the hydrophobicity of the fibers by reducing the lignocellulosic components. Two cationic dyes; methylene blue and malachite green have been efficiently removed with adsorption capacities of 133.11 and 110.74 mg g-1. The operation is simple, economically viable, and partially fulfills the principles of green engineering. Comparing with contemporary adsorbents, this material offers higher adsorption capacities with multi-cycle reusability and enhanced water stability.
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Affiliation(s)
- Jhilirani Mohanta
- Department of Chemistry, Central University of Jharkhand, Ranchi, India
| | - Roshni Kumari
- Department of Chemistry, Central University of Jharkhand, Ranchi, India
| | - Md Atif Qaiyum
- Department of Chemistry, Central University of Jharkhand, Ranchi, India
| | - Banashree Dey
- Department of Chemistry, The Graduate School College for Women, Jamshedpur, India
| | - Soumen Dey
- Department of Chemistry, Central University of Jharkhand, Ranchi, India
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20
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Junejo R, Shams Jalbani N, Kaya S, Serdaroglu G, Şimşek S, Memon S. Experimental and DFT Modeling Studies for the Adsorptive Removal of Reactive Dyes from Wastewater. SEP SCI TECHNOL 2021. [DOI: 10.1080/01496395.2021.1900252] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Ranjhan Junejo
- National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan
| | - Nida Shams Jalbani
- National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan
| | - Savas Kaya
- Department of Pharmacy, Health Services Vocational School, Sivas Cumhuriyet University, Sivas, Turkey
| | - Goncagül Serdaroglu
- Department of Math. and Sci. Edu, Sivas Cumhuriyet University, Sivas, Turkey
| | - Selçuk Şimşek
- Department of Chemistry, Faculty of Sciences, Sivas Cumhuriyet University, Sivas, Turkey
| | - Shahabuddin Memon
- National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan
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21
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Abstract
In recent years, the removal of dyes from wastewater has attracted considerable attention due to their harmful effects to ecosystem and human health. Adsorption as a facile and effective technique has been widely used to eliminate a large variety of dyes from aqueous solutions. Activated carbon is the most preferred adsorbent to treat wastewater but its use is limited because of high cost. Therefore, several low-cost and natural materials and wastes have been used as precursors for the preparation of alternative adsorbents. Among them, sawdust as an abundant and low-cost by-product has been explored as adsorbent for the removal of dyes from wastewater. This review focuses on the various sawdust used as a precursor for the preparation of activated carbons. Extensive literature information about sawdust, its compositions, activation methods, its efficiency for dyes removal, and environmental conditions effects has been reviewed. The applicability of various adsorption kinetic models and adsorption isotherm models for dye removal by sawdust-derived activated carbons has been also reported. Finally, this paper highlights the use of sawdust as base material for various composites and mixture which can be used as granular activated carbon.
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Response Factorial Design Analysis on Papain-Generated Hydrolysates from Actinopyga lecanora for Determination of Antioxidant and Antityrosinase Activities. Molecules 2020; 25:molecules25112663. [PMID: 32521731 PMCID: PMC7321370 DOI: 10.3390/molecules25112663] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/11/2020] [Accepted: 04/14/2020] [Indexed: 11/16/2022] Open
Abstract
Actinopyga lecanora (A. lecanora) is classified among the edible species of sea cucumber, known to be rich in protein. Its hydrolysates were reported to contain relatively high antioxidant activity. Antioxidants are one of the essential properties in cosmeceutical products especially to alleviate skin aging. In the present study, pH, reaction temperature, reaction time and enzyme/substrate ratio (E/S) have been identified as the parameters in the papain enzymatic hydrolysis of A. lecanora. The degree of hydrolysis (DH) with antioxidant activities of 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric-reducing antioxidant power (FRAP) assays were used as the responses in the optimization. Analysis of variance (ANOVA), normal plot of residuals and 3D contour plots were evaluated to study the effects and interactions between parameters. The best conditions selected from the optimization were at pH 5.00, 70 °C of reaction temperature, 9 h of hydrolysis time and 1.00% enzyme/substrate (E/S) ratio, with the hydrolysates having 51.90% of DH, 42.70% of DPPH activity and 109.90 Fe2+μg/mL of FRAP activity. The A. lecanora hydrolysates (ALH) showed a high amount of hydrophobic amino acids (286.40 mg/g sample) that might be responsible for antioxidant and antityrosinase activities. Scanning electron microscopy (SEM) image of ALH shows smooth structures with pores. Antityrosinase activity of ALH exhibited inhibition of 31.50% for L-tyrosine substrate and 25.40% for L-DOPA substrate. This condition suggests that the optimized ALH acquired has the potential to be used as a bioactive ingredient for cosmeceutical applications.
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23
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Muckoya VA, Nomngongo PN, Ngila JC. Factorial Design Optimisation of Solid Phase Extraction for Preconcentration of Parabens in Wastewater Using Ultra-High Performance Liquid Chromatography Triple Quadrupole Mass Spectrometry. CURR ANAL CHEM 2020. [DOI: 10.2174/1573411014666180627150854] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Parabens are synthetic esters used extensively as preservatives and/or
bactericides in personal care personal products.
Objective:
Development and validation of a novel robust chemometric assisted analytical technique
with superior analytical performances for the determination of ethylparaben, methylparaben and
propylparaben, using simulated wastewater matrix.
Methods:
An automated Solid Phase Extraction (SPE) method coupled with liquid chromatographymass
spectrometry was applied in this study. A gradient elution programme comprising of 0.1%
formic acid in deionised water (A) and 0.1% formic acid in Methanol (B) was employed on a 100 x
2.1 mm, 3.0 μm a particle size biphenyl column. Two-level (2k) full factorial design coupled with
response surface methodology was used for optimisation and investigation of SPE experimental
variables that had the most significant outcome of the analytical response.
Results:
According to the analysis of variance (ANOVA), sample pH and eluent volume were
statistically the most significant parameters. The method developed was validated for accuracy,
precision, Limits of Detection (LOD) and Limit of Quantification (LOQ) and linearity. The LOD and
LOQ established under those optimised conditions varied between 0.04-0.12 μgL−1 and 0.14-0.40 μgL−1
respectively. The use of matrix-matched external calibration provided extraction recoveries between
78-128% with relative standard deviations at 2-11% for two spike levels (10 and 100 μgL-1) in three
different water matrices (simulated wastewater, influent and effluent water).
Conclusion:
The newly developed method was applied successfully to the analyses of parabens in
wastewater samples at different sampling points of a wastewater treatment plant, revealing
concentrations of up to 3 μgL−1.
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Affiliation(s)
- Vallerie A. Muckoya
- Applied Chemistry Department, Faculty of Science, University of Johannesburg, Doornfontein 2028, South Africa
| | - Philiswa N. Nomngongo
- Applied Chemistry Department, Faculty of Science, University of Johannesburg, Doornfontein 2028, South Africa
| | - Jane C. Ngila
- Applied Chemistry Department, Faculty of Science, University of Johannesburg, Doornfontein 2028, South Africa
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24
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Baranyai E, Tóth CN, Fábián I. Elemental Analysis of Human Blood Serum by Microwave Plasma-Investigation of the Matrix Effects Caused by Sodium Using Model Solutions. Biol Trace Elem Res 2020; 194:13-23. [PMID: 31073699 PMCID: PMC6987056 DOI: 10.1007/s12011-019-01743-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 04/26/2019] [Indexed: 12/13/2022]
Abstract
Human blood is a complex sample matrix when elemental analysis is considered. In this study, the effects of Na, a natural component of serum samples, was investigated in the quantitative determination of Ca, K, Mg, Cu, Zn, and Fe by microwave plasma atomic emission spectrometry. The robustness of the microwave plasma was tested by evaluating MgII 280.271 nm/MgI 285.213 nm by varying two adjustable operating parameters, the read time, and the nebulizer pressure. The read time has no influence on the robustness while the MgII/MgI ratio decreased when the nebulizer pressure was increased during the analysis. The threshold concentrations of the interfering Na were determined at the analytical lines used for the measurement of other elements. The matrix effect of the commercially available microwave plasma was studied by a series of model experiments with human blood. The increasing concentration of Na in the matrix within the normal ranges reported for blood serum increased the intensities of the measured atomic lines. According to a factorial design-where two applied factors were the concentration of Na matrix and the measured elements as well as their levels were considered as factorial points-it was found that the Na concentration in a serum sample after acid digestion and 10 times dilution affected the intensity values of the measured elements. For Ca, Cu, and Fe, a statistically significant effect was observed, while for Zn, Mg, and K, an interaction effect was also found. However, after calculating the percentage errors caused by the shift, the relative difference was observed to be quite small (< 10%).
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Affiliation(s)
- Edina Baranyai
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem square 1, Debrecen, H-4032, Hungary.
- Atomic Spectroscopy Partner Laboratory, Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem square 1, Debrecen, H-4032, Hungary.
| | - Csilla Noémi Tóth
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem square 1, Debrecen, H-4032, Hungary
- Atomic Spectroscopy Partner Laboratory, Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem square 1, Debrecen, H-4032, Hungary
| | - István Fábián
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem square 1, Debrecen, H-4032, Hungary
- MTA-DE Redox and Homogeneous Catalytic Reaction Mechanisms Research Group, University of Debrecen, Egyetem tér 1, Debrecen, H-4032, Hungary
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25
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Arya MC, Bafila PS, Mishra D, Negi K, Kumar R, Bughani A. Adsorptive removal of Remazol Brilliant Blue R dye from its aqueous solution by activated charcoal of Thuja orientalis leaves: an eco-friendly approach. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2063-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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26
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Benhabiles S, Rida K. Production of efficient activated carbon from sawdust for the removal of dyes in single and binary systems – a full factorial design. PARTICULATE SCIENCE AND TECHNOLOGY 2020. [DOI: 10.1080/02726351.2019.1711475] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Sadjia Benhabiles
- Laboratory Interactions Materials-Environment (LIME), University of Mohamed Seddik Ben Yahia, Jijel, Algeria
| | - Kamel Rida
- Laboratory Interactions Materials-Environment (LIME), University of Mohamed Seddik Ben Yahia, Jijel, Algeria
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27
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Statistical analysis of one-pot lipase-catalyzed esterification of ϵ-caprolactone with methyl- -glucopyranoside and its extension. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2019.101464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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28
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Masoudian N, Rajabi M, Ghaedi M. Titanium oxide nanoparticles loaded onto activated carbon prepared from bio-waste watermelon rind for the efficient ultrasonic-assisted adsorption of congo red and phenol red dyes from wastewaters. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.114105] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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29
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Sabzehmeidani MM, Karimi H, Ghaedi M. Visible light-induced photo-degradation of methylene blue by n–p heterojunction CeO2/CuS composite based on ribbon-like CeO2 nanofibers via electrospinning. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.05.040] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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30
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Moghazy RM, Labena A, Husien S. Eco-friendly complementary biosorption process of methylene blue using micro-sized dried biosorbents of two macro-algal species (Ulva fasciata and Sargassum dentifolium): Full factorial design, equilibrium, and kinetic studies. Int J Biol Macromol 2019; 134:330-343. [PMID: 31054306 DOI: 10.1016/j.ijbiomac.2019.04.207] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 04/20/2019] [Accepted: 04/30/2019] [Indexed: 11/23/2022]
Abstract
Finding green effective methods for dye removal from wastewater created an important interest in comparison to conventional methods. The aim of the present work was directed to study micro grinded dried biomass of two macro-algal species, Ulva fasciata and Sargassum dentifolium as complementary biosorbent materials for effective methylene blue (MB) removal from waste water. The two macro-algal species were collected, dried, and grinded by ball mill to get the micro size. After that, the biosorbent materials were characterized by FT-IR, TEM, and DLS. Furthermore, Full Factorial Design was applied to determine the optimum conditions that maximize the MB adsorption efficiency. Ulva fasciata biosorbent material was achieved the highest MB adsorption capacity, 97% of 328 mg/l MB with a maximum adsorption capacity (qmax) of 244 mg/g in comparison to the Sargassum dentifolium, 85.6% of 26 mg/l MB with (qmax) of 66.6 mg/g. Based on Factorial Design data the main effects of the Ulva biosorbent exhibited that both time & biosorbent dose had a positive effect on biosorption and both pH & MB concentrations have a negative effect, on the other hand, no temperature effect on both biosorbents. Point of zero charge (pHpzc) was recorded at pH 6.7 and 9 for Ulva and Sargassum biosorbents, respectively. The obtained results suggested that the two macro-algal species can be used in a complementary consecutive process where Ulva fasciata started first and followed by Sargassum dentifolium. The complementary treatment process achieved efficiency of 99.2% adsorption of 300 mg/l MB concentration. Moreover, the kinetic data suggested that the adsorption of MB follows the pseudo-second order model.
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Affiliation(s)
- Reda M Moghazy
- National Research Centre (NRC), Water Pollution Research Department, Dokki, Cairo 12622, Egypt.
| | - A Labena
- Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo 11727, Egypt
| | - Sh Husien
- Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt
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Synthesized carbon nanodots for simultaneous extraction of personal care products and organophosphorus pesticides in wastewater samples prior to LC-MS/MS determination. Anal Bioanal Chem 2019; 411:6173-6187. [DOI: 10.1007/s00216-019-02009-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 06/20/2019] [Accepted: 07/01/2019] [Indexed: 10/26/2022]
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32
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A selective and sensitive detection of residual hazardous textile dyes in wastewaters using voltammetric sensor. Microchem J 2019. [DOI: 10.1016/j.microc.2019.01.055] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Liu P, Wu Z, Ge X, Yang X. Hydrothermal synthesis and microwave-assisted activation of starch-derived carbons as an effective adsorbent for naphthalene removal. RSC Adv 2019; 9:11696-11706. [PMID: 35516992 PMCID: PMC9063422 DOI: 10.1039/c9ra01386e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Accepted: 04/07/2019] [Indexed: 11/21/2022] Open
Abstract
In this work, starch-derived spherical carbon (HC) was prepared by hydrothermal carbonization and further activated with microwave assistance to obtain the target activated carbon (HMAC). The samples were characterized by methods of N2 adsorption–desorption, Brunauer–Emmett–Teller analysis, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, elemental analysis and scanning electron microscopy. Moreover, HMAC has a high BET surface area of 616.8 m2 g−1. The effects of initial naphthalene concentration, contact time, temperature, and pH of the naphthalene adsorbed on HC and HMAC were investigated systematically. The HMAC exhibits higher capability for naphthalene removal than HC, and the equilibrium adsorption quantity of HMAC was 223.03 mg g−1 at 303 K. The kinetic data revealed that the equilibrium time for naphthalene adsorption on samples was achieved at 40 min. The adsorption process of HC and HMAC for naphthalene both followed the pseudo-second-order kinetic and Freundlich isotherm models. Additionally, H-bond and π–π interactions were proposed to be involved in the adsorption process. An increasing adsorption amount of naphthalene onto HC and HMAC was observed when the pH value varied from 2 to 10. The HMAC can be successfully regenerated and maintained sorption performance after three cycles. This study revealed that HMAC obtained by hydrothermal synthesis combined with microwave-assisted activation has a promising application in the field of naphthalene removal. Hydrothermal synthesis and microwave-assisted activation of starch-derived carbon as a high performance adsorbent for naphthalene removal from aqueous solution.![]()
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Affiliation(s)
- Pengyun Liu
- School of Chemistry and Chemical Engineering, The Key Lab. for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University Shihezi 832003 P. R. China +86993-2057270 +86993-2055015
| | - Zhansheng Wu
- School of Chemistry and Chemical Engineering, The Key Lab. for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University Shihezi 832003 P. R. China +86993-2057270 +86993-2055015.,School of Environmental and Chemical Engineering, Xi'an Polytechnic University Xi'an 710048 P. R. China
| | - Xinyu Ge
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin Turin 10125 Italy
| | - Xia Yang
- School of Environmental and Chemical Engineering, Xi'an Polytechnic University Xi'an 710048 P. R. China
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Moreira V, Lebron Y, Freire S, Santos L, Palladino F, Jacob R. Biosorption of copper ions from aqueous solution using Chlorella pyrenoidosa: Optimization, equilibrium and kinetics studies. Microchem J 2019. [DOI: 10.1016/j.microc.2018.10.027] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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35
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Weng Y, Guan S, Wang L, Qu X, Zhou S. Hollow carbon nanospheres derived from biomass by-product okara for imaging-guided photothermal therapy of cancers. J Mater Chem B 2019; 7:1920-1925. [DOI: 10.1039/c8tb02858c] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Okara, a byproduct of soymilk or tofu production, was used to prepare hollow carbon nanospheres with excellent photothermal conversion efficiency and photoacoustic responsiveness, which were tested as imaging-guided PTT agents for cancer treatment.
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Affiliation(s)
- Yangziwan Weng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Shanyue Guan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Li Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Xiaozhong Qu
- College of Materials Science and Opto-Electronic Technology
- University of Chinese Academy of Sciences
- Beijing 100049
- China
| | - Shuyun Zhou
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
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Aziz EK, Abdelmajid R, Rachid LM, Mohammadine EH. Adsorptive removal of anionic dye from aqueous solutions using powdered and calcined vegetables wastes as low-cost adsorbent. ARAB JOURNAL OF BASIC AND APPLIED SCIENCES 2018. [DOI: 10.1080/25765299.2018.1517861] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- El Kassimi Aziz
- Laboratoire de Chimie Analytique & Moléculaire, Faculté Poly-Disciplinaire, Université Cadi Ayyad, Safi, Morocco
| | - Regti Abdelmajid
- Laboratoire de Chimie Analytique & Moléculaire, Faculté Poly-Disciplinaire, Université Cadi Ayyad, Safi, Morocco
| | - Laamari My Rachid
- Laboratoire de Chimie Analytique & Moléculaire, Faculté Poly-Disciplinaire, Université Cadi Ayyad, Safi, Morocco
| | - El Haddad Mohammadine
- Laboratoire de Chimie Analytique & Moléculaire, Faculté Poly-Disciplinaire, Université Cadi Ayyad, Safi, Morocco
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Combination of Two Experimental Designs to Optimize the Dimethylphthalate Elimination on Activated Carbon Elaborated from Arundo donax. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2018. [DOI: 10.1007/s13369-018-3531-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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38
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Liu P, Wu Z, Sun Z, Ye J. Comparison study of naphthalene adsorption on activated carbons prepared from different raws. KOREAN J CHEM ENG 2018. [DOI: 10.1007/s11814-018-0124-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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39
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Vunain E, Biswick T. Adsorptive removal of methylene blue from aqueous solution on activated carbon prepared from Malawian baobab fruit shell wastes: Equilibrium, kinetics and thermodynamic studies. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1504794] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Ephraim Vunain
- National Resources and Environmental Centre (NAREC), Faculty of Science, Department of Chemistry, University of Malawi, Zomba, Malawi
| | - Timothy Biswick
- National Resources and Environmental Centre (NAREC), Faculty of Science, Department of Chemistry, University of Malawi, Zomba, Malawi
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40
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Modelling and analysis on the removal of methylene blue dye from aqueous solution using physically/chemically modified Ceiba pentandra seeds. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.01.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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41
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Khasri A, Bello OS, Ahmad MA. Mesoporous activated carbon from Pentace species sawdust via microwave-induced KOH activation: optimization and methylene blue adsorption. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3452-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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de Lima FM, de Andrade Borges T, Braga RM, de Araújo Melo DM, Martinelli AE. Sulfur removal from model fuel by Zn impregnated retorted shale and with assistance of design of experiments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:13760-13774. [PMID: 29508197 DOI: 10.1007/s11356-018-1504-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 02/06/2018] [Indexed: 06/08/2023]
Abstract
There is global concern about acid rain and other pollution which is caused by the consumption of oil. By decreasing sulfur content in the oil, we can reduce unwanted emissions and acid rain. Shale was used which is a solid waste generated in the pyrolysis of shale, impregnated with Zn as an adsorbent which removes sulfur present in fuels from the hexane/toluene model solution. An influence of the agitation time (60-180 min), temperature (25-35 °C), adsorbent mass (0.1-0.25 g), and initial sulfur concentration (100-250 ppm) factorial 24 with three central points totaling 19 experiments was applied to investigate the effect of the variables on the efficiency of sulfur removal in fuels. The values of the parameters tested for maximum sulfur removal were obtained as follows: contact time = 180 min, temperature = 35 °C, adsorbent mass = 0.25 g, and initial sulfur concentration = 100 ppm. The mathematical model proposed with R2 99.97% satisfied the experimental data. This may provide a theoretical basis for new research and alternative uses for tailings of schist industrialization in order to evaluate its potential.
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Affiliation(s)
- Flávia Melo de Lima
- Universidade Federal do Rio Grande do Norte, PPGCEP - CCET, Natal, Rio Grande do Norte, 59078-970, Brazil.
| | | | - Renata Martins Braga
- Universidade Federal do Rio Grande do Norte, Escola Agrícola de Jundiaí - EAJ, Macaíba, Rio Grande do Norte, 59280-000, Brazil
| | - Dulce Maria de Araújo Melo
- Universidade Federal do Rio Grande do Norte, Instituto de Química, Natal, Rio Grande do Norte, 59078-970, Brazil
| | - Antônio Eduardo Martinelli
- Universidade Federal do Rio Grande do Norte, PPGCEP - CCET, Natal, Rio Grande do Norte, 59078-970, Brazil
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43
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Regti A, Laamari MR, Stiriba SE, El Haddad M. Potential use of activated carbon derived from Persea species under alkaline conditions for removing cationic dye from wastewaters. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.jaubas.2017.01.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Abdelmajid Regti
- Equipe de Chimie Analytique & Environnement, Faculté Poly-disciplinaire, Université Cadi Ayyad, BP 4162, 46000 Safi, Morocco
| | - My Rachid Laamari
- Equipe de Chimie Analytique & Environnement, Faculté Poly-disciplinaire, Université Cadi Ayyad, BP 4162, 46000 Safi, Morocco
| | - Salah-Eddine Stiriba
- Equipe de Chimie Moléculaire, Matériaux et Modélisation, Faculté Poly-disciplinaire, Université Cadi Ayyad, BP 4162, 46000 Safi, Morocco
- Instituto de Ciencia Molecular/ICMol, Universidad de Valencia, C/. Catedrático José Beltrán, 2, 46980 Paterna, Valencia, Spain
| | - Mohammadine El Haddad
- Equipe de Chimie Analytique & Environnement, Faculté Poly-disciplinaire, Université Cadi Ayyad, BP 4162, 46000 Safi, Morocco
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44
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Water defluoridation with avocado-based adsorbents: Synthesis, physicochemical characterization and thermodynamic studies. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.01.084] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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45
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Amaral LS, Azevedo EB, Perussi JR. The response surface methodology speeds up the search for optimal parameters in the photoinactivation of E. coli by photodynamic therapy. Photodiagnosis Photodyn Ther 2018; 22:26-33. [PMID: 29499392 DOI: 10.1016/j.pdpdt.2018.02.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 02/15/2018] [Accepted: 02/26/2018] [Indexed: 12/12/2022]
Abstract
Antimicrobial Photodynamic Inactivation (a-PDI) is based on the oxidative destruction of biological molecules by reactive oxygen species generated by the photo-excitation of a photosensitive molecule. When a-PDT is performed with the use of mathematical models, the optimal conditions for maximum inactivation are found. Experimental designs allow a multivariate analysis of the experimental parameters. This is usually made using a univariate approach, which demands a large number of experiments, being time and money consuming. This paper presents the use of the response surface methodology for improving the search for the best conditions to reduce E. coli survival levels by a-PDT using methylene blue (MB) and toluidine blue (TB) as photosensitizers and white light. The goal was achieved by analyzing the effects and interactions of the three main parameters involved in the process: incubation time (IT), photosensitizer concentration (CPS), and light dose (LD). The optimization procedure began with a full 23 factorial design, followed by a central composite one, in which the optimal conditions were estimated. For MB, CPS was the most important parameter followed by LD and IT whereas, for TB, the main parameter was LD followed by CPS and IT. Using the estimated optimal conditions for inactivation, MB was able to inactivate 99.999999% CFU mL-1 of E. coli with IT of 28 min, LD of 31 J cm-2, and CPS of 32 μmol L-1, while TB required 18 min, 39 J cm-2, and 37 μmol L-1. The feasibility of using the response surface methodology with a-PDT was demonstrated, enabling enhanced photoinactivation efficiency and fast results with a minimal number of experiments.
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Affiliation(s)
- Larissa S Amaral
- Programa de Pós-Graduação Interunidades em Bioengenharia EESC/FMRP/IQSC, Universidade de São Paulo, Av. Trabalhador Sãocarlense, 400, São Carlos, SP 13566-590, Brazil
| | - Eduardo B Azevedo
- Instituto de Química de São Carlos, Universidade de São Paulo, Av. Trabalhador Sãocarlense, 400, São Carlos, SP 13566-590, Brazil
| | - Janice R Perussi
- Programa de Pós-Graduação Interunidades em Bioengenharia EESC/FMRP/IQSC, Universidade de São Paulo, Av. Trabalhador Sãocarlense, 400, São Carlos, SP 13566-590, Brazil; Instituto de Química de São Carlos, Universidade de São Paulo, Av. Trabalhador Sãocarlense, 400, São Carlos, SP 13566-590, Brazil.
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Lu P, Hu X, Li Y, Zhang M, Liu X, He Y, Dong F, Fu M, Zhang Z. One-step preparation of a novel SrCO3/g-C3N4 nano-composite and its application in selective adsorption of crystal violet. RSC Adv 2018; 8:6315-6325. [PMID: 35540413 PMCID: PMC9078232 DOI: 10.1039/c7ra11565b] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 01/31/2018] [Indexed: 11/30/2022] Open
Abstract
A novel kind of nanoparticle SrCO3/g-C3N4 was prepared using strontium carbonate (SrCO3) and melamine (C3H6N6) as raw materials via one-step calcination. The formation of SrCO3/g-C3N4 was confirmed from the X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Brunauer–Emmett–Teller (BET) and X-ray photoelectron spectroscopy (XPS) analysis. Its selective adsorption performance was evaluated towards crystal violet (CV), rhodamine B (RhB) and methylene blue (MB). The results showed that the SrCO3/g-C3N4 had selective adsorption ability of CV. Furthermore, adsorption measurements of CV were conducted to investigate the influences of contact time, initial concentration, initial dye solution pH value and adsorbent dosage. The maximum removal rate of CV was 98.56% when the initial concentration was 1600 mg L−1. The kinetic study indicated the adsorption of CV followed the pseudo-second-second model well. The adsorption efficiency of SrCO3/g-C3N4 was greater (97.46%) than that of g-C3N4 (31.30%) and SrCO3 (17.30%). It could be deduced that the synergistic effect of conjugation interaction of g-C3N4 and the electrostatic attraction of SrCO3 might be the main driving force for the superb adsorption of CV. A novel kind of nanoparticle SrCO3/g-C3N4 was prepared using strontium carbonate (SrCO3) and melamine as raw materials via one-step calcination.![]()
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Affiliation(s)
- Peng Lu
- College of Urban Construction and Environmental Engineering
- Chongqing University
- Chongqing 400045
- China
| | - Xueli Hu
- College of Environment and Resources
- Chongqing Technology and Business University
- Chongqing Key Laboratory of Catalysis and New Environmental Materials
- Chongqing 400067
- China
| | - Yujie Li
- College of Urban Construction and Environmental Engineering
- Chongqing University
- Chongqing 400045
- China
| | - Meng Zhang
- College of Urban Construction and Environmental Engineering
- Chongqing University
- Chongqing 400045
- China
| | - Xiaoping Liu
- College of Environment and Resources
- Chongqing Technology and Business University
- Chongqing Key Laboratory of Catalysis and New Environmental Materials
- Chongqing 400067
- China
| | - Youzhou He
- College of Environment and Resources
- Chongqing Technology and Business University
- Chongqing Key Laboratory of Catalysis and New Environmental Materials
- Chongqing 400067
- China
| | - Fan Dong
- College of Environment and Resources
- Chongqing Technology and Business University
- Chongqing Key Laboratory of Catalysis and New Environmental Materials
- Chongqing 400067
- China
| | - Min Fu
- College of Environment and Resources
- Chongqing Technology and Business University
- Chongqing Key Laboratory of Catalysis and New Environmental Materials
- Chongqing 400067
- China
| | - Zhi Zhang
- College of Urban Construction and Environmental Engineering
- Chongqing University
- Chongqing 400045
- China
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Aid A, Amokrane S, Nibou D, Mekatel E, Trari M, Hulea V. Modeling biosorption of Cr(VI) onto Ulva compressa L. from aqueous solutions. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 77:60-69. [PMID: 29339604 DOI: 10.2166/wst.2017.509] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The marine biomass Ulva compressa L. (ECL) was used as a low-cost biosorbent for the removal of Cr(VI) from contaminated aqueous solutions. The operating variables were optimized: pH ∼ 2, initial concentration of 25 mg/L, solid/liquid ratio of 6 g/L and a temperature of 50 °C, leading to an uptake elimination of 96%. A full factorial experimental design technique enabled us to obtain a mathematical model describing the Cr(VI) biosorption and to study the main effects and interactions among operational parameters. The equilibrium isotherm was analyzed by the Langmuir, Freundlich and Dubinin-Radushkevich (D-R) models; it has been found that the adsorption process follows well the Langmuir model. Kinetic studies showed that the pseudo-second order model describes suitably the experimental data. The thermodynamic parameters indicated an endothermic heat and a spontaneity of the Cr(VI) biosorption onto ECL.
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Affiliation(s)
- Asma Aid
- Laboratoire de Technologie des Matériaux, USTHB, B.P.32, El-Alia, Algérie
| | - Samira Amokrane
- Laboratoire de Technologie des Matériaux, USTHB, B.P.32, El-Alia, Algérie
| | - Djamel Nibou
- Laboratoire de Technologie des Matériaux, USTHB, B.P.32, El-Alia, Algérie
| | - Elhadj Mekatel
- Laboratoire de Technologie des Matériaux, USTHB, B.P.32, El-Alia, Algérie
| | - Mohamed Trari
- Laboratory of Storage and Valorizatuion of Renaewable Energies Faculty of Chemistry (USTHB), B.P. 32 El-Alia, Alger, Algérie E-mail: ;
| | - Vasile Hulea
- Institut Charles Gerhardt, UMR 5253, CNRS-UM2-ENSCM-UM1, Matériaux Avancés pour la Catalyse et la Santé, 8 rue de l'Ecole Normale, 34 296 Cedex 5 Montpellier, France
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Rapid interaction, in aqueous media, between anionic dyes and cellulosic Nerium oleander fibers modified with Ethylene-Diamine and Hydrazine. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.07.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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49
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Asfaram A, Ghaedi M, Ghezelbash GR, Pepe F. Application of experimental design and derivative spectrophotometry methods in optimization and analysis of biosorption of binary mixtures of basic dyes from aqueous solutions. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 139:219-227. [PMID: 28152403 DOI: 10.1016/j.ecoenv.2017.01.043] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 01/21/2017] [Accepted: 01/24/2017] [Indexed: 06/06/2023]
Abstract
Simultaneous biosorption of malachite green (MG) and crystal violet (CV) on biosorbent Yarrowia lipolytica ISF7 was studied. An appropriate derivative spectrophotometry technique was used to evaluate the concentration of each dye in binary solutions, despite significant interferences in visible light absorbances. The effects of pH, temperature, growth time, initial MG and CV concentration in batch experiments were assessed using Design of Experiment (DOE) according to central composite second order response surface methodology (RSM). The analysis showed that the greatest biosorption efficiency (>99% for both dyes) can be obtained at pH 7.0, T=28°C, 24h mixing and 20mgL-1 initial concentrations for both MG and CV dyes. The quadratic constructed equation ability for fitting experimental data is judged based on criterions like R2 values, significant p and lack-of-fit value strongly confirm its high adequacy and applicability for prediction of revel behavior of the system under study. The proposed model showed very high correlation coefficients (R2=0.9997 for CV and R2=0.9989 for MG), while supported by closeness of predicted and experimental value. A kinetic analysis was carried out, showing that for both dyes a pseudo-second order kinetic model adequately describes the available data. The Langmuir isotherm model in single and binary components has better performance for description of dyes biosorption with maximum monolayer biosorption capacity of 59.4 and 62.7mgg-1 in single component and 46.4 and 50.0mgg-1 for CV and MB in binary components, respectively. The surface structure of biosorbents and the possible biosorbents-dyes interactions between were also evaluated by Fourier transform infrared (FT-IR) spectroscopy and scanning electron microscopy (SEM). The values of thermodynamic parameters including ΔG° and ΔH° strongly confirm which method is spontaneous and endothermic.
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Affiliation(s)
- Arash Asfaram
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran
| | - Mehrorang Ghaedi
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran.
| | - Gholam Reza Ghezelbash
- Biology Department, Faculty of Science, Shahid Chamran University of Ahvaz, 61357-831351, Iran.
| | - Francesco Pepe
- Dipartimento di Ingegneria, Università del Sannio, Piazza Roma 21, 82100 Benevento, Italy
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Tan K, Hameed B. Insight into the adsorption kinetics models for the removal of contaminants from aqueous solutions. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.01.024] [Citation(s) in RCA: 384] [Impact Index Per Article: 54.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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