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Agostini I, Ciuffi B, Gallorini R, Rizzo AM, Chiaramonti D, Rosi L. Recovery of Terephthalic Acid from Densified Post-consumer Plastic Mix by HTL Process. Molecules 2022; 27:molecules27207112. [PMID: 36296705 PMCID: PMC9609039 DOI: 10.3390/molecules27207112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/13/2022] [Accepted: 10/19/2022] [Indexed: 11/07/2022] Open
Abstract
In this study, we investigate the hydrothermal liquefaction (HTL) of PET separated from a densified postconsumer plastic mix, with the aim of recovering its monomer. This second raw material is made up of 90% polyolefin, while the remaining 10% is made up of PET, traces of metals, paper, and glass. After preliminary separation by density in water, two batch experiments were performed on the sunken fraction (composed mainly of PET) in a stainless steel autoclave at 345 °C for 30 and 20 min. Both trials resulted in similar yields of the three phases. In particular, the solid yield is around 76% by weight. After a purification step, this phase was analyzed by UV-Vis, 1H-NMR, and FTIR spectroscopy and resulted to be constituted by terephthalic acid (TPA), a product of considerable industrial interest. The study proved that the hydrothermal liquefaction process coupled with density separation in water is effective for obtaining TPA from a densified postconsumer plastic mix, which can be used for new PET synthesis.
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Affiliation(s)
- Ilaria Agostini
- Renewable Energy Consortium for R&D (RE-CORD) Viale J. F. Kennedy, 182, 50038 Scarperia e San Piero, Italy
| | - Benedetta Ciuffi
- Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia, 3-13, 50019 Sesto Fiorentino, Italy
| | - Riccardo Gallorini
- Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia, 3-13, 50019 Sesto Fiorentino, Italy
| | - Andrea Maria Rizzo
- Renewable Energy Consortium for R&D (RE-CORD) Viale J. F. Kennedy, 182, 50038 Scarperia e San Piero, Italy
| | - David Chiaramonti
- Renewable Energy Consortium for R&D (RE-CORD) Viale J. F. Kennedy, 182, 50038 Scarperia e San Piero, Italy
- “Galileo Ferraris” Energy Department, Polytechnic of Turin, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Luca Rosi
- Renewable Energy Consortium for R&D (RE-CORD) Viale J. F. Kennedy, 182, 50038 Scarperia e San Piero, Italy
- Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia, 3-13, 50019 Sesto Fiorentino, Italy
- Correspondence: ; Tel.: +055-4573458
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Nd2O3, Cr2O3, and V2O3 Nanoparticles via Calcination: Synthesis, Characterization, Antimicrobial and Antioxidant Activities. JOURNAL OF NANOTECHNOLOGY 2022. [DOI: 10.1155/2022/7794939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Nd2O3, Cr2O3, and V2O3 nanoparticles were prepared by calcining the precursor materials that are novel mixed ligand complexes: [Nd(BDC)(ADMPY)(OAc)].H2O, [Cr(BDC)(ADM PY)Cl].H2O, and [V(BDC)(ADMPY)Cl].H2O, where BDC = 1,4-benzenedicarboxylic acid and ADMPY = 2-amino-4,6-dimethyl pyrimidine. The generated compounds were examined through several techniques such as elemental analysis (C.H.N), UV-Vis spectroscopy, thermal analysis (thermogravimetric, differential thermogravimetry, and differential thermal analysis), FT-IR spectra, X-ray diffraction (XRD), scanning electron microscope (SEM), and transmission electron microscope (TEM). The TEM micrographs showed that neodymium oxide nanoparticles assumed agglomerated platelet-like particles, with particle sizes around 30.16 nm, while chromium oxide NPs showed solid block material with compact density and fewer pores with nearly spherical shape and 56.12 nm size. The vanadium oxide NPs were an agglomeration of small spherical nanoparticles of 28.4 nm size. The antimicrobial properties of the samples were assessed using two strains of Gram-positive bacteria, two strains of Gram-negative bacteria, and one strain of yeast. The antimicrobial results demonstrated that a large spectrum of activity characterizes the tested compounds because they are active on Gram-positive and Gram-negative bacteria, especially on Gram-positive strains. The antioxidant activity of prepared compounds was assessed by scavenging free radicals of DPPH. Metal oxide NPs also showed promising results as antioxidants.
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Hamouda MA, Sheta SM, Sheha RR, Kandil AT, Ali OI, El-Sheikh SM. A novel strontium-based MOF: synthesis, characterization, and promising application in removal of 152+154Eu from active waste. RSC Adv 2022; 12:13103-13110. [PMID: 35497013 PMCID: PMC9052379 DOI: 10.1039/d2ra01159j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 04/23/2022] [Indexed: 10/29/2022] Open
Abstract
Removal of hazardous radioactive materials such as 152+154Eu from active waste using the batch approach based on a promising novel strontium metal–organic framework (MTSr-MOF).
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Affiliation(s)
- Mohamed A. Hamouda
- Chemistry Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt
| | - Sheta M. Sheta
- Inorganic Chemistry Department, National Research Centre, 33 El-Behouth St., Dokki, Giza, 12622, Egypt
| | - Reda R. Sheha
- Nuclear Chem. Dept., Hot Lab Center, Egyptian Atomic Energy Authority, P. O. 13759, Cairo, Egypt
| | - A. T. Kandil
- Chemistry Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt
| | - Omnia I. Ali
- Chemistry Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt
| | - Said M. El-Sheikh
- Nanomaterials and Nanotechnology Department, Central Metallurgical R & D Institute, Cairo, 11421, Egypt
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Kaur R, Singh S, Chhabra VA, Marwaha A, Kim KH, Tripathi SK. A sustainable approach towards utilization of plastic waste for an efficient electrode in microbial fuel cell applications. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:125992. [PMID: 34229373 DOI: 10.1016/j.jhazmat.2021.125992] [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] [Received: 11/25/2020] [Revised: 03/24/2021] [Accepted: 04/22/2021] [Indexed: 06/13/2023]
Abstract
Microbial fuel cells (MFC) are a novel technique for power generation from wastewater. A number of approaches for the modification of physical as well as chemical properties of the electrodes can be employed to attain the maximum output power density and high power electricity. The use of an active organic linker, extracted from waste residue (plastic), for the synthesis of porous nanostructured materials would be beneficial in the fabrication of electrodes for MFC. Herein, terephthalic acid monomer (t) derived from plastic waste was successfully applied as an electrochemically active linking unit to form an iron-based metal-organic framework (Fe-t-MOF: MIL-53(Fe)). The synthesized Fe-t-MOF was further modified with conducting polymer (polyaniline (PANI)). The produced nanocomposite (Fe-t-MOF/PANI) was coated on stainless steel (SS) disk (as a current collector) for use as an electrode component of the MFC system. The power density, open circuit potential (OCP), and a limiting current density of the MFC are 680 mW/m2, 0.67 V, and 3500mA/m2, respectively. The technique opted here should help search a novel, efficient, sustainable, and cost-effective route for the modification of the plastic waste into an MFC electrode to achieve bioenergy production through wastewater treatment.
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Affiliation(s)
- Rajnish Kaur
- Department of Physics, Panjab University, Sector 14, Chandigarh 160014, India
| | - Shiv Singh
- Industrial Waste Utilization, Nano and Biomaterial division, Council of Scientific and Industrial Research, Advanced Materials and Processes Research Institute, Hoshangabad Road, Bhopal, Madhya Pradesh 462064, India
| | - Varun A Chhabra
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea
| | - Aanchal Marwaha
- Department of Physics, Panjab University, Sector 14, Chandigarh 160014, India
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
| | - S K Tripathi
- Department of Physics, Panjab University, Sector 14, Chandigarh 160014, India
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Farajmand B, Dalali N, Keshavarz S, Lakmehsari MS. Application of MIL-53(Al) prepared from waste materials for solid-phase microextraction of propranolol followed by corona discharge-ion mobility spectrometry (CD-IMS). J Pharm Biomed Anal 2020; 189:113418. [PMID: 32590274 DOI: 10.1016/j.jpba.2020.113418] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 06/04/2020] [Accepted: 06/05/2020] [Indexed: 11/26/2022]
Abstract
In this study, MIL-53(Al) metal-organic framework was prepared from waste raw materials. A polyethylene terephthalate (PET) plastic bottle was used as the source of terephthalic acid, and an aluminium beverage can was applied as the precursor of aluminium salt. The activated MIL-53(Al) was immobilized onto a stainless steel probe of the ion mobility spectrometer (IMS), and the coated probe was used for solid-phase microextraction of propranolol from biological samples before determination. The effect of the different parameters such as pH, ionic strength, and stirring rate of the sample, extraction time, and temperature was studied on the extraction efficiency of propranolol. The linearity was obtained ranging from 5-200 μg L-1 with a determination coefficient (R2) of 0.9988, and the detection limit was calculated 1.7 μg L-1 in the water sample. The relative standard deviations of the method were in the range of 2.5-12.2 %. Finally, the method was utilized for determination of propranolol in the tablet sample.
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Dyosiba X, Ren J, Musyoka NM, Langmi HW, Mathe M, Onyango MS. Feasibility of Varied Polyethylene Terephthalate Wastes as a Linker Source in Metal–Organic Framework UiO-66(Zr) Synthesis. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02205] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xoliswa Dyosiba
- HySA Infrastructure Centre of Competence, Energy Centre, Council for Scientific and Industrial Research (CSIR), Meiring Naudé Road, Brummeria, Pretoria 0001, South Africa
- Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Private Bag X680, Pretoria 0183, South Africa
| | - Jianwei Ren
- HySA Infrastructure Centre of Competence, Energy Centre, Council for Scientific and Industrial Research (CSIR), Meiring Naudé Road, Brummeria, Pretoria 0001, South Africa
- Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Private Bag X680, Pretoria 0183, South Africa
| | - Nicholas M. Musyoka
- HySA Infrastructure Centre of Competence, Energy Centre, Council for Scientific and Industrial Research (CSIR), Meiring Naudé Road, Brummeria, Pretoria 0001, South Africa
| | - Henrietta W. Langmi
- HySA Infrastructure Centre of Competence, Energy Centre, Council for Scientific and Industrial Research (CSIR), Meiring Naudé Road, Brummeria, Pretoria 0001, South Africa
| | - Mkhulu Mathe
- HySA Infrastructure Centre of Competence, Energy Centre, Council for Scientific and Industrial Research (CSIR), Meiring Naudé Road, Brummeria, Pretoria 0001, South Africa
| | - Maurice S. Onyango
- Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Private Bag X680, Pretoria 0183, South Africa
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Ling C, Shi S, Hou W, Yan Z. Separation of waste polyester/cotton blended fabrics by phosphotungstic acid and preparation of terephthalic acid. Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.01.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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