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Hazardous content removal and silver nanoparticle recovery from liquid radiography waste using microwave plasma / Andi Erwin Eka Putra in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 29, N° 6 (12/2019)
[article]
Titre : Hazardous content removal and silver nanoparticle recovery from liquid radiography waste using microwave plasma Type de document : texte imprimé Auteurs : Andi Erwin Eka Putra, Auteur ; Enni Sulfiana, Auteur ; Novriany Amaliyah, Auteur ; Azwar Hayat, Auteur ; Hairul Arsyad, Auteur Année de publication : 2019 Article en page(s) : p. 369-373 Note générale : Bibliogr. Langues : Français (fre) Catégories : Argent
Déchets -- Elimination
Diffractométrie de rayons X
Micro-ondes
Microscopie électronique à balayage
Nanoparticules -- Toxicologie
Radiographie
Récupération (Déchets, etc.)
Recyclage (déchets, etc.)
Technique des plasmasIndex. décimale : 628.4 Hygiène publique. Déchets industriels Résumé : The components of liquid radiography waste may be harmful or useful, depending on the composition of the raw material. This paper aims to remove the hazardous content from liquid radiography waste, while recoving the silver nanoparticles. The microwave plasma method was adopted to achieve this purpose. First, the conventional microwave oven was modified to generate the plasma in 100 mL liquid radiogrpahy waste at 500W. The plasma generation time was varied for 1, 3, 4, 7, and 10 min. In the treated liquid, the total suspended solid (TSS) was analyzed through ultraviolet spectrophotmetry, the silver (Ag) was examined through atomic absorption spectrophometory, and the biological oxygen demand (BOD) and chemical oxygen demand (COD) were discussed by titration method. In addition, the recovered silver was identified by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that the microwave plasma method reduced the TSS by 99.36 %, the Ag by 92.73 %, the pH by 3.42 %, the BOD by 57.13 %, and the COD by 57.14 % ; In addition, spherical shaped silver nanoparticles were indentified at some peaks with average crystallite size ranging from 2.64 nm to 65.64 nm. The research findings shed important new light on the recycling of liquid radiography waste. Note de contenu : - Hazardous content removal
- Fig. 1 : Experimental apparatus
- Fig. 2 : Liquid waste colour change
- Fig. 3 : XRD pattern of silver nanoparticles in sample 1
- Fig. 4 : XRD pattern of silver nanoparticles in sample 2
- Fig. 5 : SEMimage of silver nanoparticles, sample 1 and sample 2
- Table 1 : Analysis parameters of medical liquid wasteDOI : https://doi.org/10.18280/rcma.290605 En ligne : https://www.iieta.org/download/file/fid/21563 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34948
in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES > Vol. 29, N° 6 (12/2019) . - p. 369-373[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22409 - Périodique Bibliothèque principale Documentaires Disponible Highly selective and sensitive colorimetric chemosensor based on tricarboyanine for detection of Ag+ in industrial wastewater / Xiaolong Zeng in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 2 (Année 2020)
[article]
Titre : Highly selective and sensitive colorimetric chemosensor based on tricarboyanine for detection of Ag+ in industrial wastewater Type de document : texte imprimé Auteurs : Xiaolong Zeng, Auteur ; Xuezhao Li, Auteur ; Wen Sun, Auteur Année de publication : 2020 Article en page(s) : 11 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Argent
Capteurs chimiques
Eaux usées -- Analyse
Fluorescence
Ions
Ions métalliquesIndex. décimale : 631.7 Conservation des eaux Résumé : An efficient fluorescent probe 1 based on tricarbocyanine derivative was designed and synthesized, which can detect Ag+ in real industrial wastewater. UV-Vis absorption and fluorescent emission spectra of probe 1 were carried out and indicated this probe can bind Ag+ via complexation reaction, then leading to a remarkable color change from blue to light red. Furthermore, probe 1 showed high sensitive performance and excellent selectivity toward Ag+ over other common metal ions in neutral pH. The sensing mechanism was proposed and further confirmed by 1H NMR, which demonstrate analyte-induced destruction of the π-electron system could be shorten by the disruption of the pull-push π-conjugation system in probe 1. Moreover, a test strip was prepared by filter paper immersing in probe 1 solution, which further provide its potential application for trace Ag+ detection in real industrial wastewater. Note de contenu : - EXPERIMENTAL METHODS : Materials and reagents - Instrumentations - Synthesis - Measurement method
- RESULTS AND DISCUSSION : Construction and characterization of intermediate and probe 1 - Fluorescence and UV-Vis spectral response of probe 1 to Ag+ - The selectivity to various metal ion as well as common anion and pH effect of probe 1 - Investigation of binding mechanism - Preliminary application for preparing test strips and applicability for real wastewater samples
- Table 1 : Determination of Ag+ from real wastewater samplesDOI : https://doi.org/10.1186/s42825-020-00031-2 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-020-00031-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37450
in JOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 2 (Année 2020) . - 11 p.[article]Improvement of the separation and antibiological fouling performance using layer-by-layer self-assembled nanofiltration membranes / Caihua Xiong in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 3 (05-06/2020)
[article]
Titre : Improvement of the separation and antibiological fouling performance using layer-by-layer self-assembled nanofiltration membranes Type de document : texte imprimé Auteurs : Caihua Xiong, Auteur ; Zhonghua Huang, Auteur ; Zhiyu Ouyang, Auteur ; Mengdi Tang, Auteur ; Xiaolu Lin, Auteur ; Zhen Zhang, Auteur Année de publication : 2020 Article en page(s) : p. 731–746 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Argent
Caractérisation
Membranes (technologie)
Nanofiltration
Nanoparticules
Polyaziridine
Revêtements antisalissures
Séparation (technologie)Index. décimale : 667.9 Revêtements et enduits Résumé : A novel surface-modified nanofiltration (NF) membrane was prepared by layer-by-layer (LbL) self-assembly of positively charged polyethylenimine (PEI) and glutaraldehyde (GA) and negatively charged carboxymethyl chitosan (NO-CMC) alternately on the polyethersulfone (PES) membrane surfaces. The alteration aimed at improving the membrane separation performance, which was investigated in the study. In order to enhance antibiological fouling performance of the NF membrane, the silver nanoparticles (AgNPs) were coated on the modified membrane in two different modes. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), zeta potential measurement, and water contact angle measurements were employed to characterize the formed membrane surface chemical composition and morphology. The rejection of different single nonheavy metal salts, yielded from the modified membrane, followed the order of MgCl2 > MgSO4 > CaCl2 > Na2CO3 > NaCl > Na2SO4. Additionally, the rejection of single heavy metal salts Cr3+, Cu2+, Cd2+, Ni2+ was 88.95%, 84.04%, 82.69% and 83.47%, respectively, whereas the rejection of Cr3+, Cu2+, Cd2+, Ni2+ increased to 91.77%, 90.70%, 89.74% and 87.22%, respectively, in the mixed salt solution. Moreover, the rejection of Cu2+ and Cd2+ increased to 96.12% and 94.38% after adjusting pH. As a result of loading the AgNPs on the modified membrane with a suitable mode, the antibiological fouling ability of the membrane was immensely improved by AgNPs. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of NO-CMC - Preparation of composite membranes - Characterization - Evaluation of membrane performance - Results and discussion - Characterization of the NO-CMC - Characterization of the prepared composite NF membranes - Evaluation of membrane performance DOI : https://doi.org/10.1007/s11998-019-00298-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00298-z Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34103
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 3 (05-06/2020) . - p. 731–746[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21734 - Périodique Bibliothèque principale Documentaires Disponible Incessant and economical technique for in-situ preparation of metallic-nano on/in polyester fabric / Bharat H. Patel in CHEMICAL FIBERS INTERNATIONAL, Vol. 71, N° 1 (04/2021)
[article]
Titre : Incessant and economical technique for in-situ preparation of metallic-nano on/in polyester fabric Type de document : texte imprimé Auteurs : Bharat H. Patel, Auteur ; Aadhar A. Mandot, Auteur ; Satyajeet B. Chaudhari, Auteur Année de publication : 2021 Article en page(s) : p. 45-47 Langues : Anglais (eng) Catégories : Argent
Caractérisation
Cuivre
Microscopie électronique à balayage
Nanoparticules
Polyesters
Textiles et tissus synthétiques
ZincIndex. décimale : 677.4 Textiles artificiels Résumé : Composite textiles consisting of metallic nanoparticles dispersed in textiles fabric have been prepared by the reduction of metal ion from its salt at room temperature under normal atmospheric conditions. Morphology and structures have been investigated by SEM. Spherical nanoparticles were found to be homogeneously dispersed in/on the polyester (PET) fiber and the particles were elementally analyzed by the XRF technique. Note de contenu : - Materials
- Equipment
- Experimental methods
- Preparation of polyester-copper nanocomposite textile
- Preparation of polyester-silver nanocomposite textile
- Preparation of polyester-zinc nanocomposite textile
- Characterization of polyester-metal nano composites
- Results in discussion
- In situ formation of copper nanoparticles on/in polyester fabric
- In situ formation of silver nanoparticles on/in polyester fabric
- In-situ formation of zinc nanoparticles on/in polyester fabric
- Fig. 1 : Schematic process design for in situ synthesis of metallic nano on textile
- Fig. 2 : Color difference values of copper nano-loaded polyester fabric
- Fig. 3 : SEM images of normal polyester fabric and in-situ synthesized copper nanoparticles on polyester fabric
- Fig. 4 : Color difference values of Ag nano loaded polyester fabric
- Fig. 5 : SEM images of normal polyester fabric and in-situ synthesized and stabilized silver nanoparticles polyester fabric
- Fig. 6 : SEM images of normal polyester fabric and in-situ synthesized and stabilized and stabilized zinc nanoparticles on polyester fabric
- Table 1 : Polyester fabric specification
- Table 2 : Amount of copper detected on 78.5 mm2 polyester with XRF
- Table 3 : Amount of silver detected on 78.5 mm2 polyesters with XRF
- Table 4 : Amount of zinc detected on polyester fabric with XRFEn ligne : https://drive.google.com/file/d/1pjr1OG7ZgmVPkwbbAhT4AIpYMeQvjlno/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35561
in CHEMICAL FIBERS INTERNATIONAL > Vol. 71, N° 1 (04/2021) . - p. 45-47[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22645 - Périodique Bibliothèque principale Documentaires Disponible Ion etching induced surface patterns of blend polymer (Poly ethylene glycol – Poly methyl methacrylate) irradiated with gamma rays / Mohamed Mohamady Ghobashy in INTERNATIONAL POLYMER PROCESSING, Vol. XXXII, N° 2 (05/2017)
[article]
Titre : Ion etching induced surface patterns of blend polymer (Poly ethylene glycol – Poly methyl methacrylate) irradiated with gamma rays Type de document : texte imprimé Auteurs : Mohamed Mohamady Ghobashy, Auteur ; A. M. Abdel Reheem, Auteur ; N. A. Mazied, Auteur Année de publication : 2017 Article en page(s) : p. 174-182. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alliages polymères
Alliages polymères -- Propriétés thermiques
Argent
Couches minces multicouches
Cuivre
Films plastiques
Gravure
Irradiation
Polyéthylène glycol
Polyméthacrylate de méthyleLe poly(méthacrylate de méthyle) (souvent abrégé en PMMA, de l'anglais Poly(methyl methacrylate)) est un polymère thermoplastique transparent obtenu par polyaddition dont le monomère est le méthacrylate de méthyle (MMA). Ce polymère est plus connu sous son premier nom commercial de Plexiglas (nom déposé), même si le leader global du PMMA est Altuglas International9 du groupe Arkema, sous le nom commercial Altuglas. Il est également vendu sous les noms commerciaux Lucite, Crystalite, Perspex ou Nudec.
Pulvérisation cathodique
Rayons gammaIndex. décimale : 668.4 Plastiques, vinyles Résumé : The pattern surface structure of a thin blend polymer film of Poly methyl methacrylate (PMMA) – Poly ethylene glycol (PEG) induced by Ar+ ion etching (5 keV) has been investigated by scanning electron microscopy. Blend polymer films have been obtained consisting of a hydrophilic PEG and a hydrophobic PMMA distributed in co-continuous phases. Four different compositions of the two polymers are dissolved in chloroform and irradiated with gamma rays (60Co) at 20 kGy to produce transparent films of blend polymer PMMA-PEG after casting. Self-assembled of PMMA-PEG film is obtained because of the high contrast between the two polymers. Ion-polymer interaction with a hydrophilic polymer (Ar+ +PEG) rather than the high etch resistance of hydrophobic polymer (Ar+ ?PMMA) was observed. The results are discussed in terms of significant destruction of bonds in the blend polymer films as a result of which one polymer undergoes rapid dissociation rather than the other one. This means that etching with Ar+ ions of the PMMA domains are stable and PEG can be selective. The ATR-FTIR spectrum shows the absence of hydrogen bonds and XRD/DSC curves show the crystanility of PMMA depending on the PEG contents and gamma radiation effect, irradiated blend polymer PMMA/PEG has shown more resistant at thermal degradation than irradiated PMMA. This indicates that the PEG contents have an effect on the thermal stability of PMMA/PEG as detected by TGA. Finally, the pattern surface of irradiated blend polymer (PMMA-2%PEG) was plated with two coaxial layers subsequently of copper (Cu) and silver (Ag) using sputter technique. Note de contenu : - EXPERIMENTAL : Gamma radiation source - Apparatuses - Preparation methods - Characterizations of the samples
- RESULTS AND DISCUSSION : Chemical interaction of the blend polymer PMMA/PEG samples determined by ATR/FT-IR spectrum - Effect of the gamma irradiation and PEG content in the crystallite of PMMA - Scanning electron and optical microscope for gamma irradiated blend polymer PMMA-PEG film - Thermal analysis of blend polymer PMMA-PEG film - X-ray diffraction for ion itching and silver coating of PMMA-PEG film - Scan electron microscope for itching and silver coating blend polymer PMMA-PEG filmDOI : 10.3139/217.3258 En ligne : https://drive.google.com/file/d/1pl3PiQmjlf4mrMpme7ygAkOXtftpuxBl/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28493
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXII, N° 2 (05/2017) . - p. 174-182.[article]Réservation
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