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]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
17358	-	Périodique	Bibliothèque principale	Documentaires	Disponible

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]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
18140	-	Périodique	Bibliothèque principale	Documentaires	Disponible

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]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
18411	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Evaluating combinations of leather fungicides by inhibition zone / Gu Haibin in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 2 (03-04/2007)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 2 (03-04/2007) . - p. 63-68 Titre : Evaluating combinations of leather fungicides by inhibition zone Type de document : texte imprimé Auteurs : Gu Haibin, Auteur ; Changqing Zhao, Auteur ; Wuyong Chen, Auteur ; Yan Li, Auteur Année de publication : 2007 Article en page(s) : p. 63-68 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Conservation Fongicides Inhibition microbienne Synergie Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : synergism index (SI, Formula (1)) and graphical method (Fig. 1) expressed by the minimum inhibitory concentrations (MIC) are often used to evaluate the type of action of combined leather fungicides. The determination of MIC is a complicated and time-consuming process and the exact value is difficult to determine, so a rapid, simple method would be useful to evaluate synergistic combinations. In this study, a formula of the synergism index (SI*, Formula (3)) and the graphical method (Fig. 3) expressed by the diameters of inhibition zones were defined. (2-thiocyanoethyl)-cinnamate (A) and a commercial product of Isothiazoline whose active ingredients are the mixture 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one (B) were chosen for combination, and the diameters of inhibition zones and minimum inhibitory concentrations for the effectiveness of different combinations to nine fungi were determined to verify the feasibility of the two methods. Results show that the values of SI calculated by MIC and the value of SI* calculated by diameters of inhibition zones are only slightly different, but they both show the same tendency in that, to most fungi and for most proportions, the values of SI and SI* are all less than 1.0. So, the different combinations of A and B show a synergistic effect or additive effect and the method of SI* is viable to evaluate their action. The relation between the value of SI* and the type of action is same as that of SI. Regarding the graphical method, the results for MIC show a dramatic synergistic effect that is different from that of SI method, and the results of evaluation of diameters of inhibition zones is similar to that of SI* method. So the graphical method expressed by the diameters of inhibition zones is also usable. As the determination of inhibition zones is a relative simple process, the two new methods are very convenient for evaluating synergistic combinations of leather fungicides. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation off ungal spore suspensions - Preparation ofme dium containing fungal spores - Evaluation ofaction type by crossed filter paper strip - Mensuration ofdiam eter ofinhibit ion zone - Determination ofminim um inhibitory concentration (MIC) - RESULTS AND DISCUSSION : Evaluation by crossed filter paper strip - Evaluation by synergism index - Evaluation ofacti on type by the graphical method En ligne : https://drive.google.com/file/d/1wYcVNUB_nVyO6LGAkIDktar9D2dydMan/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39035 [article]

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire

Influence of finishing on the flammability of leather / Gong Ying in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 5 (09-10/2007)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 5 (09-10/2007) . - p. 208-211 Titre : Influence of finishing on the flammability of leather Type de document : texte imprimé Auteurs : Gong Ying, Auteur ; Wuyong Chen, Auteur ; Chen Jiping, Auteur ; Gu Haibin, Auteur Année de publication : 2007 Article en page(s) : p. 208-211 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir d'ameublement Cuirs et peaux -- Finition Essais de comportement au feu Inflammabilité Laque et laquage Nitrocellulose Polyamides Un polyamide est un polymère contenant des fonctions amides -C(=O)-NH- résultant d'une réaction de polycondensation entre les fonctions acide carboxylique et amine. Selon la composition de leur chaîne squelettique, les polyamides sont classés en aliphatiques, semi-aromatiques et aromatiques. Selon le type d'unités répétitives, les polyamides peuvent être des homopolymères ou des copolymères. Polyuréthanes Résistance à la flamme Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Four common film-forming materials, including polyurethane (PU), polyacrylate(PA), nitrocellulose lacquer (NC) and protein, were used to coat leather. The flammability of the leather was evaluated by the vertical flame test (ALCA Method E 50) and oxygen index (OI) test method (ASTM D 2863-77). The results indicate that all of the above film-forming materials can enhance the flame-resistance of the leather. According to the OI values of the finished leathers the performance of film-forming materials on leather can be ranked as : PU>Protein>PA>NC. The results of flammability tests show that pigmented finishes may improve the flame-resistance of the leather. The effect of different application levels of film-forming materials on the flammability was examined. The results indicate that the OI values decreased with the increasing levels of PA and PU, and the other values, i.e. afterglow, after-flame, char length and weight loss, etc. rose. The variance of PU was larger than for PA. The afterglow and after-flame of the leather, finished with a 'Sofa Leather Finishing Formula' (Clariant Chemicals Ltd, China), were much higher than for the crust indicating that the flame-resistance of this finished leather is worse than the crust. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of finished leather samples - Sampling for oxygen index test and vertical flame test - Vertical flame test - Oxygen Index test - RESULTS AND DISCUSSION : Flammability of leathers finished with different film-forming materials - Effect of the dosage of film-forming materials on the flame-resistance of leather - Effect of the dosage of film-forming materials on the flame-resistance of leather - Influence of pigment finishing on the flame-resistance of leather - Influence of a complete commercial finishing coat on the flame-resistance of leather - Table 1 : Properties of the four film-forming materials - Table 2 : Sofa leather finishing formula - Table 3 : Flammability of leathers finished with various film-forming materials (20g/m2) - Table 4 : Oxygen Index test results of the completely finished leather and the control En ligne : https://drive.google.com/file/d/1yqk-1bssflKfGSUCQZ_8VHkW2zPAUEGi/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39014 [article]

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire

Isothiazolinone as a fungicide for leather and shoe lining / Changqing Zhao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 6 (11-12/2006)  

Permalink

Preparation and characterization of collagen-tio2 nanocomposite improved by glutaraldehyde / Zhou Nan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 5 (09-10/2006)  

Permalink

Toxicity evaluation of collagen hydrolysates from chrome shavings and their potential use in the preparation of amino acid fertilizer for crop growth / Li Zhao in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 4 (Année 2022)  

Permalink

---

1 (1 - 8 / 8)