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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Dynamics of removal of nitrogen from tannery wastewater using a bioflocculant / Changqing Zhao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 5 (09-10/2016)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 100, N° 5 (09-10/2016) . - p. 252-256 Titre : Dynamics of removal of nitrogen from tannery wastewater using a bioflocculant Type de document : texte imprimé Auteurs : Changqing Zhao, Auteur ; Wuyong Chen, Auteur ; Yang Qinhuan, Auteur ; Gu Haibin, Auteur Année de publication : 2016 Article en page(s) : p. 252-256 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Azote Eaux usées -- Epuration Floculant Simulation par ordinateur Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this paper, a single bioflocculant was used to treat nitrogen in tannery wastewater. At different processing time points, the nitrogen concentrations for the total nitrogen, ammonia, Kjeldahl nitrogen, nitrate, and nitrite were determined. Furthermore, a computer simulation was performed to derive the experience dynamic equations. The established dynamic equations can be used to predict the removal capacity of the total nitrogen, ammonia, Kjeldahl nitrogen, nitrate, and nitrite in the tannery wastewater treated with the biofloccufant, calculate the optimum processing time, and cut costs. In addition, these equations establish a foundation for studying the mechanism underlying this bioflocculant treatment for tannery wastewater. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials - Strain - Media preparation - Bioflocculant preparation - Tannery wastewater treatment by the bioflocculant - RESULTS AND DISCUSSION - REMOVAL DYNAMICS OF VARIOUS FORMS OF NITROGEN Appendix : Simulated tannery wastewater En ligne : https://drive.google.com/file/d/1zBlaXri0wqyjEvwsOPFe1aiD1WDZx-Et/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27090 [article]

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Effect of particle size of extenders in water based paints - a critical view / M. Veeramani in PAINTINDIA, Vol. LXIX, N° 11 (11/2019)  

[article]  inPAINTINDIA > Vol. LXIX, N° 11 (11/2019) . - p. 112-118 Titre : Effect of particle size of extenders in water based paints - a critical view Type de document : texte imprimé Auteurs : M. Veeramani, Auteur Année de publication : 2019 Article en page(s) : p. 112-118 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Charges (matériaux) Diluants Dioxyde de titane Floculant Formes des particules Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Taille des particules Index. décimale : 667.9 Revêtements et enduits Résumé : Extenders or fillers form the bulk of the paints. I had dealt with this subject earlier under the heading extenders with sufficient introduction, followed by individual description of various extenders and the critical role played by it in the paint of each extenders and the critical role played by it in the paint matrix, if the particle size of the extenders is reduced to a great extent. Now let me recall some of the salient features, in brief, of extenders. Readers may find some repetition from the earlier chapter ; it is only for the purpose of recalling the same for better continuity and also note that extenders are also known as extender pigments also. Note de contenu : - Extender pigments - the forgotten component - Improving TiO2 use through spacing - PVC ladder with varying extender volume concentration - Extender flocculating performs worse - Extender with air voids improves opacity - TiO2 reductions of 20% are possible - Fig. 1 : Reducing extender particle - Improving pigment spacing/dispersion - Fig. 2 : Opacity curves showing crowding effect - Fig. 3 : Reducing TiO2 content using extender E : effect on contrast ratio and effect on equivalent reflectance - Fig. 4 : Effect of extender particle size and shape in gloss En ligne : https://drive.google.com/file/d/1ICUyqzH6irq2OxXEsJctGXW6KKEei_i9/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33637 [article]

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Exploring the mechanisms of the interaction between a specific bioflocculant and tannery wastewater / Changqing Zhao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 2 (03-04/2018)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 2 (03-04/2018) . - p. 75-80 Titre : Exploring the mechanisms of the interaction between a specific bioflocculant and tannery wastewater Type de document : texte imprimé Auteurs : Changqing Zhao, Auteur ; Shu Li, Auteur ; Yang Qinhuan, Auteur ; Wuyong Chen, Auteur Année de publication : 2018 Article en page(s) : p. 75-80 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption Coagulation Eaux usées -- Analyse Floculant Floculation Liaisons chimiques Neutralisation (chimie) Réactions chimiques Tannage -- Déchets Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : To explore the interaction between a bioflocculant produced using Bacillus cereus and tannery wastewater, four flocculation mechanisms were studied including chemical interaction, charge neutralisation, adsorption and bridging, and sweep-floc coagulation. First, the interaction of the bioflocculant and tannery wastewater was evaluated using the infrared spectrum. It was found that there was no significant difference of spectrum before and after flocculation, indicating no chemical interaction between the bioflocculant and tannery wastewater. Second, it was found that no electric potential change was detected when comparing the samples before and after the addition of the bioflocculant into the tannery wastewater, indicating no charge neutralization during flocculation. Third, the presence of adsorption and bridging was determined by testing the molecular weight, covalent bonds and particle sizes during flocculation. These factors showed that the adsorption and bridging took place during the flocculation process. Finally, the morphological observation of the flocs exhibited network structures, indicating the existence of sweep-floc coagulation. The results represented that the interaction between the bioflocculant and tannery wastewater mainly involved adsorption and bridging, and sweep-floc coagulation. Note de contenu : - EXPERIMENTAL PROCEDURE : Preparation of the simulated tannery wastewater - Preparation of bioflocculant - Exploring chemical reactions - Exploring charge neutralisation - Exploring adsorption and bridging - Exploring the sweep-floc coagulation - RESULTS AND DISCUSSION : The exploration of chemical reactions - The exploration of charge neutralisation - The exploration of adsorption and bridging - Analysis of the sweep-floc coagulation En ligne : https://drive.google.com/file/d/1GEXWCcL6OdsLByZLbnP5HLsN_Gndmuk_/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30558 [article]

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Hyperbranched polymers - A primer for their uses in the leather industry / Wang Xue-Chuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 2 (03-04/2006)  

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Medium optimisation for bioflocculant produced from bacillus cereus / Changqing Zhao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 3 (05-06/2017)  

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Raw skin wastes - used to prepare a flocculant for the treatment of black liquor for papermaking / Chi Yuanlong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 5 (09-10/2011)  

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Recovery of chromium(III) from chrome tanning wastewater by precipitation and adsorption / Minghua Liu in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 5 (09-10/2006)  

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Synthesis and evaluation of a novel shavings-based cationic flocculant / Dai Chunji in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 2 (03-04/2018)  

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