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Chinese understanding of the ecological environment values of the leather industry / Han Wang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 1 (01-02/2021)
[article]
Titre : Chinese understanding of the ecological environment values of the leather industry Type de document : texte imprimé Auteurs : Han Wang, Auteur ; Jing Li, Auteur ; Yang Zhao, Auteur ; Jie Chen, Auteur Année de publication : 2021 Article en page(s) : p. 1-8 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Industrie -- Aspect de l'environnement
Cuirs et peaux -- Industrie -- ChineIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The leather industry waste-water is one of the main pollution factors of the ecological environnent. Due to long-term market competition, it was impossible to transfer the cost of waste water treatment to consumers. Discharging wastewater illegally became the usual behaviours of leather factories in past decades in China. The Environmental Supervision Department of China was faced with the dilemma of 'If we let it be, there will be a mess and 'if we take strict supervision the enterprises could not survive due to the high treatment cost'. We have to tolerate and accept the fact that environmental pollution is an inevitable consequence of extensive economic construction. In order to reduce and control pollution, the Supervision Department are strengthening supervision while accelerating the upgrading of leather production equipment, supporting enterprises to improve production process, guiding the mergers and reorganizations of the leather manufacturing industry, and seeking the dialectical unity of industry and public interests between pollution and development, survival and ecology. Note de contenu : - Characteristics and general technologies of pollution treatment in leather industry
- The chinese government's supervision measures of environmental pollution
- The effect of leather pollution supervision in China in the past decades
- The new path of leather industry pollution governance in China
- Self consistent logic of new path of leather pollution governance in China
- Table 1 : The ranking of leather products and shoes in various regions of China in 2019
- Table 2 : Rankings of China's light leather production from January to August 2019
- Table 3 : Sample statistics of environmental pollution penalties for leather enterprises
- Table 4 : Comparison of discharge standards of main pollutants from tanning (mg/L)En ligne : https://drive.google.com/file/d/1AmEXz0Tznimv2OiFm14dWBKNizrJgAxl/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35311
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 105, N° 1 (01-02/2021) . - p. 1-8[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22599 - Périodique Bibliothèque principale Documentaires Disponible Eliminating weld-seam weakness / Dietmar Drummer in KUNSTSTOFFE INTERNATIONAL, Vol. 106, N° 8 (08/2016)
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Titre : Eliminating weld-seam weakness : Thermoset injection molding with forced ventilation by mold evacuation Type de document : texte imprimé Auteurs : Dietmar Drummer , Auteur ; Christian Gröschel, Auteur ; Yang Zhao, Auteur Année de publication : 2016 Article en page(s) : p. 52-55 Langues : Anglais (eng) Catégories : Lignes de soudure
Matières plastiques -- Moulage par injection
Soudures -- Défauts
ThermodurcissablesIndex. décimale : 668.4 Plastiques, vinyles Résumé : Weld seams are unavoidable in complex parts and often represent optical and mechanical flaws in injection moldings – particularly if they are fiber-reinforced. Current studies show that evacuating the mold cavity with venturi nozzles before injection molding can eliminate the weld seam weakness that occurs in thermoset injection molding. Note de contenu : - Evacuating a mold without a pump
- Weld seam strength with/without vacuum technology
- Mechanism of weld-seam formationEn ligne : https://drive.google.com/file/d/1E8X8whany70-nV4WuylM60y-6fNprR2B/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27075
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Code-barres Cote Support Localisation Section Disponibilité 18254 - Périodique Bibliothèque principale Documentaires Disponible Optimisation for preparation conditions of modified bioflocculant based on the tannery wastewater treatment / Changqing Zhao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 3 (05-06/2022)
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Titre : Optimisation for preparation conditions of modified bioflocculant based on the tannery wastewater treatment Type de document : texte imprimé Auteurs : Changqing Zhao, Auteur ; Guangyu Ran, Auteur ; Yang Zhao, Auteur ; Yang Qinhuan, Auteur ; Chunyu Fang, Auteur Année de publication : 2022 Article en page(s) : p. 112-116 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse de variance En statistique, l'analyse de la variance (terme souvent abrégé par le terme anglais ANOVA : ANalysis Of VAriance) est un ensemble de modèles statistiques utilisés pour vérifier si les moyennes des groupes proviennent d'une même population. Les groupes correspondent aux modalités d'une variable qualitative (p. ex. variable : traitement; modalités : programme d'entrainement sportif, suppléments alimentaires ; placebo) et les moyennes sont calculés à partir d'une variable continue (p. ex. gain musculaire).
Ce test s'applique lorsque l'on mesure une ou plusieurs variables explicatives catégorielles (appelées alors facteurs de variabilité, leurs différentes modalités étant parfois appelées "niveaux") qui ont de l'influence sur la loi d'une variable continue à expliquer. On parle d'analyse à un facteur lorsque l'analyse porte sur un modèle décrit par un seul facteur de variabilité, d'analyse à deux facteurs ou d'analyse multifactorielle sinon. (Wikipedia)
Biofloculant
Eaux usées -- Analyse
Eaux usées -- Epuration
Eaux usées -- Recyclage
Eaux usées -- Teneur en azote totalIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Tannery wastewater with high content of total nitrogen is a liquid leather waste with a serious impact on the environment. Herein, the removal of total nitrogen from tannery wastewater has attracted increasing attention among scientists in the leather industry. In this paper, a kind of novel modified bioflocculant was prepared based on the optimisation index of the total nitrogen removal rate of tannery wastewater. Specifically, the novel modified bioflocculant (type N6616) was prepared by modifying Bacillus cereus with amphoteric starch using ammonium cerium nitrate as initiator. Then, the single-factor and orthogonal optimisation experiments were carried out to optimise the modified conditions. The results showed that the highest removal rate could reach 77.53% under the condition of the amphoteric starch dosage of 0.35g/L, the bioflocculant dosage of 3g/L, the initiator dosage (0.02mol/L) of 1.75mL, the reaction temperature of 40°C, the reaction time (second stage) of 18 minutes, the rotation speed of 270r/min and the pH of reaction system of 5.0. This paper provides an effective bioflocculant to remove the total nitrogen of tannery wastewater and mitigates the bad effect of tannery wastewater on the environment. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials - Optimisation experiment for modified conditions of bioflocculant
- RESULTS AND DISCUSSION : Single-factor optimisation of modified conditions - Orthogonal optimisation of modified conditions
- Table 1 : Details of the orthogonal design for the N6616 modified procedure of bioflocculant
- Table 2 : Experimental design and results of N6616 modified bioflocculant
- Table 3 : Variance analysis of N6616 type modified bioflocculantEn ligne : https://drive.google.com/file/d/1D3lxh34Gne5rG66R0tmByCP49GVrzCeN/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37754
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 106, N° 3 (05-06/2022) . - p. 112-116[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23467 - Périodique Bibliothèque principale Documentaires Disponible Proficiency testing for determination of hexavalent chromium in leather in China / Zhiding Huang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 104, N° 2 (03-04/2020)
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Titre : Proficiency testing for determination of hexavalent chromium in leather in China Type de document : texte imprimé Auteurs : Zhiding Huang, Auteur ; Yang Zhao, Auteur ; Wei Wang, Auteur ; Wang Peng, Auteur ; Xinying Zhao, Auteur ; Hongyue Shi, Auteur ; Wenkai Chang, Auteur Année de publication : 2020 Article en page(s) : p. 59-62 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Assurance qualité
Cuir -- Teneur en chrome hexavalent
Cuirs et peaux -- Analyse
Cuirs et peaux -- Industrie -- Chine
Evaluation
StatistiquesIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A proficiency testing scheme (CNAS PT0038-PT-201802) for the determination of hexavalent chromium in leather was organised in China. The test materials were prepared by adding a tanning agent containing hexavalent chromium to a blank sheepskin during the retanning process. The retanning was identical to the real production process to assure the representation of the test materials. Homogeneity and stability indicated that the test materials were suitable for the proficiency testing samples. The assigned values of test materials for proficiency assessment were derived directly front the reported results of laboratories, and the measurement performance for determining hexavalent chromium in leather were assessed using robust z-scores. This PT program is necessary and useful to help the laboratories to comply with quality assurance requirements and improve the detection level. Note de contenu : - EXPERIMENTAL PROCEDURES : Participating laboratories - Preparation of test materials - Homogeneity and stability - Performance statistics
- RESULTS AND DISCUSSIONS : Homogeneity of test materials - Stability of test materials - Histograms of results - Assigned values - Evaluation of laboratory proficiency - AssessmentEn ligne : https://drive.google.com/file/d/1TYp7e47qIsxjjX8DfbHK8HRd2K9KS_k7/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33909
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 104, N° 2 (03-04/2020) . - p. 59-62[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21654 - Périodique Bibliothèque principale Documentaires Disponible Progress of certified reference materials in the leather field / Zhiding Huang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 2 (03-04/2019)
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Titre : Progress of certified reference materials in the leather field Type de document : texte imprimé Auteurs : Zhiding Huang, Auteur ; Yang Zhao, Auteur ; Xinying Zhao, Auteur ; Wei Wang, Auteur ; Xugen Feng, Auteur ; Wenkai Chang, Auteur Année de publication : 2019 Article en page(s) : p. 59-64 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Certification
Chaussures
Cuirs et peaux -- Industrie
MatériauxIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Certified reference materials in the leather industry are mainly used for testing of physical, mechanical and chemical safety properties of leather, footwear products and shoe materials. Certified reference materials are an important basis for ensuring the accuracy, reliability and traceability of the test resuits. In this paper, the progress of certified reference materials in leather industry at home and abroad was systematically reviewed, and the main research methods of certified reference materials in leather field are described. At the same time, the existing problems of the certified reerence materials in leather industry were analysed. Finally, the prospects of the development and application of certified reference materials in leather industry were put forward. Note de contenu : - RESEARCH STATUS OF CRMS IN THE LEATHER INDUSTRY : CRMs in the leather industry - Development of CRMs in the leather field
- PROBLEMS OF CRMS IN THE LEATHER FIELD
- Table 1 : Summary of CRMs in the leather industry
- Table 2 : Summary of certification methods of CRM in the leather field
- Fig. 1 : Route chart of development of a CRM
- Fig. 2 : Development of CRM for longitudinal stiffness of shanks for footwear
- Fig. 3 : Development of CRM for abrasion resistance of footwear
- Fig. 4 : Route chart of development of CRM for chemical properties of leatherEn ligne : https://drive.google.com/file/d/15i2Fd3JIXPoXUofxrHYajw4TUNgMqQqJ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32301
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 103, N° 2 (03-04/2019) . - p. 59-64[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20855 - Périodique Bibliothèque principale Documentaires Disponible