Chrome sludge compost - Effects on crops and soils / Li Gui-Ju in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 1 (01-02/2006)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 90, N° 1 (01-02/2006) . - p. 10-13 Titre : Chrome sludge compost - Effects on crops and soils Type de document : texte imprimé Auteurs : Li Gui-Ju, Auteur ; Zhang Chuan-Bo, Auteur ; Zhan Jing, Auteur ; Feng Wang, Auteur Année de publication : 2006 Article en page(s) : p. 10-13 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agriculture Boues résiduaires Chrome trivalent -- Absorption Compostage Déchets -- Valorisation Engrais Mesure Tannage -- Déchets Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Tannery sludge can contain 70% of organic substances which can have applications as a high-quality fertilizer, however, too high levels of chrome are a major obstacle for tannery sludge in agricultural applications. In this experiment, a study on chrome migration, transformation and resultant chrome levels has been done in the laboratory and expanded to using tannery sludge compost on agricultural land. These studies offer theoretical support for using tannery sludge. The experimental study shows that when Cr3+ levels in soil reach 250mg/kg, the plant absorption of chrome reaches the maximum value, which is 23.33mg/kg. The evidence shows that chrome loading of paddy field soil should be controlled to 350mg/kg. Note de contenu : - EXPERIMENT PROGRAMS AND RESEARCH METHOD : Effect on soil and wheat growth - Measurement techniques - Compost materials and experimental project - EXPERIMENTAL RESULTS AND DISCUSSION : Effect of chrome on wheat and in soil - Paddy rice comparison experiments - Table 1 : Present condition of tannery sludge treatment in China - Table 2 : Compost materials and experiment compost composition - Table 3 : Chrome content in wheat and soil as a function of concentration of chrome solution (mg/kg) - Table 4 : Biological production of wheat seedlings - Table 5 : Existence state of chrome in the tannery sludge - Table 6 : Main chemical constitutions of the compost with sludge and wheat straw - Table 7 : Chrome distribution in each part of paddy rice (mg/Kg-1) En ligne : https://drive.google.com/file/d/11ruWpVLjfp51cf-7AQufeSDxUHD26kOD/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39178 [article]

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Natural and synthetic leather - a microstructural comparison / Qu Jian-Bo in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 1 (01-02/2008)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 92, N° 1 (01-02/2008) . - p. 8-13 Titre : Natural and synthetic leather - a microstructural comparison Type de document : texte imprimé Auteurs : Qu Jian-Bo, Auteur ; Zhang Chuan-Bo, Auteur ; Feng Jian-Yan, Auteur ; Gao Fu-tang, Auteur Année de publication : 2008 Article en page(s) : p. 8-13 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir Cuir synthétique Etudes comparatives Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This paper details our comparison of the structure of superfine fibre synthetic leather and natural leather cattle hide. The differences between the microfilaments and between the two-layer braiding [interweaving] of synthetic leather and the three-layer braiding [interweaving] of natural leather were observed from the view of microstructure, and studied by the scanning electron microscope (SEM). The influence of fibre structure, braiding form and leather’s structure on the physical and chemical properties are discussed. The results showed that synthetic leather simulates the microstructure of natural leather because the superfine fibre is similar to the fineness and structure of the fibril. The natural leather has a stereoscopic structure with the continuously changing degree of fibre crosslinking. The synthetic leather has a three-dimensional structure of superfine fibre non-wovens and microporous polyurethane. The uniform braiding structure of the synthetic leather is its advantage, but it is restricted technically by the lack of a grain layer. Therefore, reducing the fibre fineness, increasing braiding density, number of layers and simulating a grain layer structure are the required direction of development for synthetic leather to better simulate natural leather. Note de contenu : - MATERIALS AND INSTRUMENTS - STRUCTURE OBSERVATIONS : Observation of fibre structure and braiding form [interweaving] - Observation of structures and shapes - RESULTS AND DISCUSSIONS : Comparison of fibre structure - Comparison of fineness and specific surface - Fibre flexural rigidity and mechanical analysis - Comparison of fibre braiding state [interweaving] - Comparison of leather body structure En ligne : https://drive.google.com/file/d/133nvgtNsy4_OLlf3UF2TLrYn0HvfpPwR/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38915 [article]

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