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Auteur Xuepin Liao
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- Sichuan University - Chengdu - China
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Non-ammonia deliming using sodium hexametaphosphate and boric acid / Yunhang Zeng in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 9 (09/2011)
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Titre : Non-ammonia deliming using sodium hexametaphosphate and boric acid Type de document : texte imprimé Auteurs : Yunhang Zeng, Auteur ; Jiahong Lu, Auteur ; Xuepin Liao, Auteur ; Qiang He, Auteur ; Bi Shi, Auteur Année de publication : 2011 Article en page(s) : p. 257-263 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Borique, Acide
Cuirs et peaux -- Analyse
DéchaulageOpération consistant à débarrasser les peaux de la chaux et des substances alcalines qui leur ont été appliquées au pelanage.
Eaux usées -- Analyse
Hexamétaphosphate de sodium
Sels d'ammoniumIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The use of ammonium salt in the deliming process is the primary reason for high ammonia nitrogen content in tannery wastewater. To reduce ammonia nitrogen pollution, a composite of sodium hexametaphosphate (SHMP) and boric acid (BA) was employed for non-ammonia deliming. The synergistic effect of SHMP and BA on deliming of limed cattle hide was investigated by analyzing the pH of deliming liquor, the extent of removal of calcium in pelt and the concentration of total nitrogen (TN) in the effluent. The experimental results indicated that the lowest pH of float during SHMP and BA deliming process was 7.08 and the concentration of hydroxyproline in the deliming liquor was lower than that of ammonia sulfate deliming, which suggest that deliming by SHMP and BA can reduce the damage of pelts. The extent of calcium removal from pelts delimed by using 3 % SHMP and 1 % BA was comparable to that of the pelts delimed with 3.5 % ammonium sulfate. FESEM images and EDS analysis indicated that the deliming by SHMP and BA produced clearer grain with less calcium salts. Compared with ammonium sulfate deliming, TN concentration in SHMP and BA deliming float was reduced by 85 %. Note de contenu : EXPERIMENTAL METHODS : Materials - Deliming processes - Analyses of effluents and pelts - Estimation methods : Determination of Hyp concentration - Determination of TN and TOC concentrations - Determination of calcium content and extent of calcium removal
RESULTS AND DISCUSSION : pH of deliming liquors - Extent of calcium removal from pelts - TN and TOC in deliming effluentsEn ligne : https://drive.google.com/file/d/1ZobH-Rc22M3p5Es6l9D_Tz1bQE6X-VMq/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11887
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVI, N° 9 (09/2011) . - p. 257-263[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13284 - Périodique Bibliothèque principale Documentaires Disponible A novel oxazolidine tanning agent and its use in vegetable combination tanning / Jing Li in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 4 (07-08/2011)
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Titre : A novel oxazolidine tanning agent and its use in vegetable combination tanning Type de document : texte imprimé Auteurs : Jing Li, Auteur ; Sun Qingyong, Auteur ; Chao Wu, Auteur ; Xuepin Liao, Auteur ; Bi Shi, Auteur Année de publication : 2011 Article en page(s) : p. 165-170 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Mimosa et constituants
Oxazolidine
Tannage combinéLe tannage combiné se dit des tannages qui allient deux familles ou genre de tannage pour obtenir un résultat additionnant les qualités complémentaires des tannins mis en œuvre par exemple Chrome-Végétal ou Chrome-Synthétique
Tannage organique
Tannage végétalIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Combination tanning using vegetable tannins and oxazolidine E has been proved to be preferred alternative to chrome tanning. But this kind of tannage has not been widely applied partly owing to the high price of oxazolidine E. In this study, a new oxazolidine tanning agent, Oxazolidine SCU, was synthesized by using cheap and readily obtained raw materials, and its tanning properties both alone and in combination with vegetable tannins, were investigated. Oxazolidine SCU possesses high reactivity with skin collagen. Tanned by 5 % oxazolidine SCU under room temperature at pH8.0, the shrinkage temperature of goatskin leather was around 83°C. In vegetable combination tanning, oxazolidine SCU exhibited a good synergistic tanning effect with condensed tannins. Among condensed tannins, mimosa is the preferred one in consideration of achieving high shrinkage temperature of leather. Tanning the depickled pelt with 10-15 % vegetable tannin at first, and then retanning with 4-6 % oxazolidine SCU for 4 hours at 60°C in the pH range 5.5-6.0, the shrinkage temperature of leather was 114-120°C. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials and instruments - Effect of tanning conditions on vegetable tannin-oxazolidine SCU combination tanning - Shrinkage temperature determination
- RESULTS AND DISCUSSION : Hydrolysis of oxazolidine SCU - Effect of tanning conditions on tanning property of oxazolidine SCU - Effect of tanning conditions on vegetable tannin-oxazolidine SCU combination tanningEn ligne : https://drive.google.com/file/d/1MQ9SW_udQTqwBWd5mGhdxqHM1IVNomnb/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11860
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 4 (07-08/2011) . - p. 165-170[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 013212 - Périodique Bibliothèque principale Documentaires Disponible Phosphorylated collagen fibre : preparation and use for adsorbing heavy metals / Jiao Limin in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 93, N° 5 (09-10/2009)
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Titre : Phosphorylated collagen fibre : preparation and use for adsorbing heavy metals Type de document : texte imprimé Auteurs : Jiao Limin, Auteur ; Xuepin Liao, Auteur ; Bi Shi, Auteur Année de publication : 2009 Article en page(s) : p. 201-206 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Phosphorylated collagen fibre (P-CF) was prepared using phosphorus oxychloride as a phosphorylating reagent. Solid state 31P-NMR and FTIR analysis proved that phosphate groups were bound with amino groups of collagen fibre.As a novel fibrous adsorbent, P-CF performed to be an effective adsorbent for metal ions, such as Pb2+, Cd2+, Co2+, Ni2+, Cu2+, Zn2+ and UO2 2+.
By using Cd2 as probe ion, the fundamental adsorption behaviours of P-CF to metal ions were investigated. The adsorption capacity was significatly influenced by pH value, and the optimal pH for adsorbing Cd2+ located in the pH range of 3.83-6.22. The adsorption isotherms of Cd2+ were well fitted by the langmuir equation. The adsorption capacity was increased with the increase of temperature. The adsorption kinetics was satisfactorily described by the pseudo-second-order rate model, implying that the chemical adsorption of P-CF to Cd2+ is the rate controlling step. Moreover, P-CF can be easily desorbed using dilute HNO3 solution.En ligne : https://drive.google.com/file/d/1f1luv_KVuG7Luz_kx7kxwST9GisqfiqD/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6281
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 5 (09-10/2009) . - p. 201-206[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011654 - Périodique Bibliothèque principale Documentaires Disponible Preparation of lignosulfonate reduced chrome tanning agent and its tanning effect / Peng Zhou in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 4 (07-08/2011)
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Titre : Preparation of lignosulfonate reduced chrome tanning agent and its tanning effect Type de document : texte imprimé Auteurs : Peng Zhou, Auteur ; Xuepin Liao, Auteur ; Bi Shi, Auteur Année de publication : 2011 Article en page(s) : p. 158-164 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chrome hexavalent
Lignosulfonate
Réduction (chimie)
Tannage au chrome
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Lignosulfate (LGS) is a major by-product of pulping industry, generated in a huge amount each year. In this research, LGS was used as a reducing agent to reduce Cr (VI) to Cr (III) so that the LGS reduced chrome tanning agent (Cr-LGS) was prepared. It was found that the optimal mass ration of LGS, dichromate and concentrated sulphuric acid was 0.7:1.0:1.0 for the preparation reaction. The LGS was degraded during the reaction while some functional groups, such as carboxyl, were derived. These structural changes in LGS made the Cr-LGS exhibit a satisfactory self-making effect and thus possess good alkali resistance. Tanning experiments indicated that Cr-LGS achieved a high shrinkage temperature for wet-blue (Ts=118°C, Cr2O3 offer=1.5 %). Compared with the leather tanned by commercial chrome tanning agent, the Cr-LGS tanned leather exhibited greater tensile and tear strengths with improved fullness and tightness. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Methods - Characterization of Cr-LGS - Tanning trials and evaluation of wet-blue leather - Scanning electron microscope analysis - Strength determination of crust leather.
-RESULTS AND DISCUSSION : Effect of mass ratio of LGS/dichromate on property of tanning liquor - The change of LGS structure after reaction and its effect on tanning properties - General evaluation of wet-blue leather - Mechanical properties of crust leather.En ligne : https://drive.google.com/file/d/1hcN-Gfz-oLaWfVVfKn7yfbz4IPYv3V-O/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11859
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 4 (07-08/2011) . - p. 158-164[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 013212 - Périodique Bibliothèque principale Documentaires Disponible Raw skin wastes - Used to prepare a collagen fibre adsorbent for the chromatographic separation of flavonoids / Zhang Qixian in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 98, N° 3 (05-06/2014)
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Titre : Raw skin wastes - Used to prepare a collagen fibre adsorbent for the chromatographic separation of flavonoids Type de document : texte imprimé Auteurs : Zhang Qixian, Auteur ; Li Xinxin, Auteur ; Li Juan, Auteur ; Wenhua Zhang, Auteur ; Xuepin Liao, Auteur ; Bi Shi, Auteur Année de publication : 2014 Article en page(s) : p. 93-98 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants
Adsorption
Chromatographie
Collagène
Cuirs et peaux -- Déchets
Flavonoïdes
Gel de silice
Matériaux poreux
PolyamidesUn 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.
Séparation (technologie)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : To explore the new approach of value-added utilization of tannery skin wastes, a novel column packing material, collagen fibre adsorbent (CFA), was prepared by using skin wastes as raw material. In the present study, the separation application of CFA on flavonoids and its comparison with other current packing materials (silica gel, polyamide, D101 macroporous resin and Sephadex LH-20) were investigated. Rutin and kaempferol were selected as model flavonoids. Static adsorption indicated that the adsorption capacity of CFA to rutin and kaempferol was different, and the extent of adsorption of kaempferol was lower because it has fewer hydroxyl groups/hydrogen-bond reaction sites. In CFA column chromatography separation, the mixture of rutin and kaemoferol could be well separated by stepwise elution with 90% and 50% aqueous ethanol solutions, and their recoveries were 90.02% and 94.60%, respectively.
However, in comparison with CFA, rutin and kaempferol could not be well separated and recovered by using silica gel, polyamide and D101 macroporous resin columns. In addition, the cost of CFA is much lower, especially compared with Sephadex LH-20. Therefore, CFA has the potential to be applied as a packing material for separation of flavonoids.Note de contenu : - MATERIALS AND METHODS : Materials and equipments - Preparation of CFA - Static adsorption capability of CFA
- RESULTS AND DISCUSSION : Characterization of CFA by SEM analysis - Static adsorption capability of CFA - Chromatographic separation performance of CFA - Price estimation of CFAEn ligne : https://drive.google.com/file/d/1qDjmuTspuQTaf7gyPhUobxdXpL6fZ3gu/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21528
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Code-barres Cote Support Localisation Section Disponibilité 16323 - Périodique Bibliothèque principale Documentaires Disponible 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)
PermalinkRelease of chrome in chrome tanning and post tanning process / Zhou Jian in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 4 (07-08/2012)
PermalinkRemoval of aromatic organic acids from aqueous solution by using chrome leather waste as an adsorbent / Zhang Mina in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIII, N° 3 (02/2008)
PermalinkRemoval of calcium pelt during bating process : an effective approach for non-ammonia bating / Ya-Nan Wang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 4 (04/2013)
PermalinkThe further investigation of tanning mechanisms of typical tannages by ultraviolet-visible and near infrared diffused reflectance spectrophotometry / Junling Guo in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 7 (07/2011)
PermalinkThe reaction of vegetable tannin-aldehyde-collagen - A further understanding of vegetable tannin-aldehyde combination tannage / Zhongbing Lu in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 5 (09-10/2003)
PermalinkTransposition of chrome tanning in leather making / Chao Wu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 6 (06/2014)
PermalinkUtilization of tannery solid waste : Dry strength additive for papermaking / Yaohui You in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 7 (07/2013)
PermalinkWearable synthetic leather-based high-performance X-ray shielding materials enabled by the plant polyphenol- and hierarchical structure-facilitated dispersion / Linping Yan in COLLAGEN AND LEATHER, Vol. 5 (2023)
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