Components of a bioflocculant prepared with bacillus subtilis for the treatment of tannery wastewater / Changqing Zhao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 4 (07-08/2015)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 99, N° 4 (07-08/2015) . - p. 172-175 Titre : Components of a bioflocculant prepared with bacillus subtilis for the treatment of tannery wastewater Type de document : texte imprimé Auteurs : Changqing Zhao, Auteur ; Zhao Xingxiu, Auteur ; Mu Shengdong, Auteur ; Gu Haibin, Auteur ; Zhang Jing, Auteur ; Wei Zou, Auteur ; Yang Qinhuan, Auteur Année de publication : 2015 Article en page(s) : p. 172-175 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bacillus subtilis Eaux usées -- Analyse Eaux usées -- Décontamination Floculant Fourier, Spectroscopie infrarouge à transformée de Tannage Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A bioflocculant prepared with Bacillus subtilis was used to treat tannery wastewater, followed by component analysis of the bioflocculant. The restes demonstrated that the bioflocculant prepared with Bacillus subtilis was able to treat total nitrogen, chemical oxygen demand (COD) and colour, successfully removing the compounds from tannery wastewater. Component analysis revealed that the bioflocculant contained saccharides, proteins, glycoproteins, osamines, and fats ; the bioflocculant did not contain nucleic acid. It is expected that these results will contribute to future research into the application and the mechanism by which bioflocculants remove contaminants from tannery wastewater. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials - PREPARATION OF BIOFLOCULANT - TREATMENT OF TANNERY WASTEWATER BY FLOCCULANT : Component analysis of the bioflocculant - Observation of the bioflocculant by FT-IR - RESULTS AND DISCUSSION : Treatment of tannery wastewater by bioflocculant (analysis of saccharide, protein, glycoprotein, osamine, fat and nucleic acid in the bioflocculant, analysis by FT-IR) En ligne : https://drive.google.com/file/d/1AiXp7mBGBH-6gBpWhSj0M5ldj-PLsEak/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24558 [article]

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Determination active ingredients in bioflocculants for treatment of tannery wastewater / Changqing Zhao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 3 (05-06/2016)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 100, N° 3 (05-06/2016) . - p. 122-126 Titre : Determination active ingredients in bioflocculants for treatment of tannery wastewater Type de document : texte imprimé Auteurs : Changqing Zhao, Auteur ; Zhao Xingxiu, Auteur ; Gao Hongxia, Auteur ; Gu Haibin, Auteur ; Zhang Jing, Auteur ; Wei Zou, Auteur ; Yang Qinhuan, Auteur Année de publication : 2016 Article en page(s) : p. 122-126 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie analytique Eaux usées -- Recyclage Floculant Glucides Glycoprotéines Huiles et graisses Osamines Tannage -- Déchets Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In the present study, three bioflocculants were extracted from Bacillus cereus, Bacillus subtilis and Bacillus fusiformis, and their active components, including saccharides, proteins, glycoproteins, osamines, and fats, were analyzed. The results showed that saccharides were associated with flocculation. However, proteins had a weak effect on flocculation, and fats, osamines and glycoproteins had no effect. The findings elucidated the role of each ingredient in the removal of contaminants from tannery wastewater, providing a basic for understanding the mechanism of action of bioflocculants in the treatment of tannery wastewater. Note de contenu : - PREPARATION OF BIOFLOCCULANTS : Analysis of the active component of bioflocculants - RESULTS AND DISCUSSION : Activity analysis of saccharides - Activity analysis of glycoproteins - Activity analysis of fats - Activity analysis of osamines En ligne : https://drive.google.com/file/d/1RwesX_GqAxnHEF8av1Wi3TZz7VsA4fPm/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26444 [article]

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Micropatterning by friction embossing / Wei Zou in KUNSTSTOFFE INTERNATIONAL, Vol. 108, N° 12 (12/2018)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 108, N° 12 (12/2018) . - p. 29-32 Titre : Micropatterning by friction embossing : Friction welding for embossing high microstructures in thermoplastics Type de document : texte imprimé Auteurs : Wei Zou, Auteur ; Johannes Sackmann, Auteur ; Werner Karl Schomburg, Auteur Année de publication : 2018 Article en page(s) : p. 29-32 Langues : Anglais (eng) Catégories : Matières plastiques Microstructures Polyméthacrylate de méthyle Le 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. Index. décimale : 668.4 Plastiques, vinyles Résumé : The fabrication of microstructured systems by ultrasonic hot embossing features short cycle times, low investment costs and high flexibility. However, the structure height and overall size of the patterned area are limited by the power of the available ultrasonic welding machines. The friction process introduced here makes use of the heat generated by friction for embossing and offers potential for achieving higher microstructures. Note de contenu : - Ultrasonic hot embossing of microsystems - How friction embossing works - First friction embossing experiments - Fig. 1 : Microfluidic systems fabricated by ultrasonic hot embossing and welding: a) microreactor of PVDF und PMMA, b) microchip of PC for measuring the calcification propensity of patients, c) anemometric flow sensor, d) polymer chip for the investigation of cell cultures - Fig. 2 : Ultrasonic hot embossing: the sonotrode compresses the polymer stack and generates frictional heat by means of vibrations coupled perpendicular to the tool surface - Fig. 3 : Friction embossing: between the holders of a friction welding machine, a plastic film is placed on a micropatterned tool. Between this film and a plastic plate moving relative to it frictional heat is generated, softening the polymer which then conforms the tool shape. After cooling down, the reshaped polymer is removed from the machine - Fig. 4 : Size comparison of microstructures fabricated by friction embossing: samples of PC fabricated by circular (a) and by linear friction embossing (b), (c) sample generated by linear friction embossing from PET and PC - Table 1 : Friction welding parameters of the three processes investigated. In each case, the thickness of films and plates were 500 pm and 4 mm, respectively. The entire time of movements and cooling down was 10s in each process En ligne : https://drive.google.com/file/d/148HRvjLtnIafya_Peu7s29e21fx_ixRo/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31420 [article]

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Synthesis of ADI/HDI hybrid isocyanurate and its application in polyurethane coating / Guiyou Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 3 (05/2015)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 12, N° 3 (05/2015) . - p. 543-553 Titre : Synthesis of ADI/HDI hybrid isocyanurate and its application in polyurethane coating Type de document : texte imprimé Auteurs : Guiyou Wang, Auteur ; Kang Li, Auteur ; Wei Zou, Auteur ; Aiguo Hu, Auteur ; Chunpu Hu, Auteur ; Yangping Zhu, Auteur ; Chen Chen, Auteur ; Glynn Guo, Auteur ; Aaron Yang, Auteur ; Ray Drumright, Auteur ; John Argyropoulos, Auteur Année de publication : 2015 Article en page(s) : p. 543-553 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bis(isocyanatométhyl)cyclohexane Caractérisation Catalyse Diisocyanate d'hexaméthylène Isocyanurates Polyuréthanes Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : Hybrid isocyanurate was prepared by solvent-free trimerization of hexamethylene diisocyanate (HDI) and bis(isocyanatomethyl) cyclohexane (ADI), and characterized by gel permeation chromatography (GPC), gas chromatography (GC), nuclear magnetic resonance (NMR), and electrospray ionization mass spectrometry (ESI–MS). The results showed that ADI/HDI hybrid isocyanurate could be prepared with 2-hydroxypropyl-trimethyl-azanium catalyst at reaction temperatures between 50°C and 70°C. Both the GC and 1H NMR analyses identified a favorable linear relationship between the feed ratio of the starting monomers and the amount of each individual isocyanate incorporated into the oligomer (reaction ratio). Compared to coatings prepared from the mixture of ADI isocyanurate and HDI isocyanurate, the coatings from ADI/HDI hybrid isocyanurate possess higher distinctness of image. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of ADI/HDI hybrid isocyanurate - Preparation of two-component polyurethand coatings - Characterization and evaluation - RESULTS AND DISCUSSION : GPC analysis and results - GC analysis and results - H NMR analysis and results - ESI-MS analysis and results - Appearance of polyurethane coatings based on ADI/HDI hybrid isocyanurate DOI : 10.1007/s11998-014-9650-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9650-3.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24178 [article]

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