Evaporation ponds : a solution for tannery effluent disposal / R. A Rowswell in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 69 (Année 1985)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 69 (Année 1985) . - p. 123-129 Titre : Evaporation ponds : a solution for tannery effluent disposal Type de document : texte imprimé Auteurs : R. A Rowswell, Auteur ; Desmond R. Cooper, Auteur ; S. G. Shuttleworth, Auteur Année de publication : 1985 Article en page(s) : p. 123-129 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This study takes a look into the factors affecting the efficient operation of the Evaporation Pond system used for the disposal of tannery effluent. Guidelines are given for improving the efficiency of the evaporation pond operation which will minimise grounds for complaints due to the occurence of anaerobic conditions. The climatic conditions for the region are very important factors in making the system economically viable, i.e. the evaporation rate. The results for monitoring, over a period of 16 months, one such system which has been in continuous operation for 15years are evaluated. These results show that the pond system is a cost-effective and low technology method for handling tannery effluent. The disadvantages are the possible production of smell and corrosive hydrogen sulphide, the land area required for the ponds and the fact that the saline wastewater cannot, at present, be recycled back into the tannery. These factors must be balanced against the cost, high technology and close supervision required for more modern methods of wastewater management, which, however, have the potential for water recycling. Note de contenu : - The principles of Evaporation Pond Operation. - Factors affecting the efficient operation of the Evaporation Pond System. - The evaluation of one suche Evaporation Pond System in operation. En ligne : https://drive.google.com/file/d/1Z-fbmR9hGftw5lhy2ZsibSj3ek2TgzWq/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9408 [article]

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Review of accumulated experience of the liritan process / S. G. Shuttleworth in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXI (Année 1986)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXI (Année 1986) . - p. 119-124 Titre : Review of accumulated experience of the liritan process Type de document : texte imprimé Auteurs : S. G. Shuttleworth, Auteur ; David A. Boast, Auteur ; Desmond R. Cooper, Auteur Année de publication : 1986 Article en page(s) : p. 119-124 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The accumulated experience from world-wide large scale usage of the LIRITAN process for sole leather, and other types of vegetable leather, is reviewed. Improvements have resulted from LIRI pilot plant investigations and this world-wide large scale usage. These are discussed in the sequence of unhairing, depickling, type of polyphosphate (calgon, etc. ) and method of pretanning, the “flip-flop” system for maximum tan utilization, methods for sole, harness and belting leathers, extract dissolving, tan fixation and process control. En ligne : https://drive.google.com/file/d/1Yr4Or-dMmqowCETela5hGHl-xXgnJc3w/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9166 [article]

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A study of the ageing characteristics of mimosa-Al leather / David A. Boast in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 70 (Année 1986)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 70 (Année 1986) . - p. 151-154 Titre : A study of the ageing characteristics of mimosa-Al leather Type de document : texte imprimé Auteurs : David A. Boast, Auteur ; Desmond R. Cooper, Auteur ; S. G. Shuttleworth, Auteur Année de publication : 1986 Article en page(s) : p. 151-154 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : During the past decade a great deal of reserach work has been aimed at developing an alternative process to chrome tannage. The reasons for this search are welle known and will not be dwelt upon, but it has always been considered that such an alternative tannage must produce leather having similar properties to chrome tanned leather, particularly as regards hydrothermal stability. Several avenues have been followed by researchers, but the most promising approach seems to be that of a combination tannage involving vegetable tannins and aluminium salts. The value of this type of combination tannage has been known for many years and has been employed to produce leather with hydrothermal stability, perspiration resistant leather and more durable bookbinding leather. However, this earlier work was performed without paying much attention to the theoretical side of the process and it was not until Slabbert of the South African Leather Industries Research Institute (LIRI) presented a paper to the Congress of the IULTCS held in Versailles in 1979 that there was an attempt to rationalise the theory of a vegetable/aluminium tannage. Since publication of that initial report, other papers have added to the fund of knowledge pertaining to the mechanism. As things stand at present, by using the theory coupled with practical tanning processes in which the latest technology is employed, it can be said that a vegetable aluminium tannage which is typified by the Mimosa-Al tannage is established as a viable process. It can be employed to produce a wide range of leathers from firm shoeupper to soft garment in a rational and cost-effective manner. To process has the added attraction that crust stocks may be prepared at a number of stages to allow shipment and sorting, for example, to be carried out without the problem of rehydration which is associated with chrome tanned leather. It is the object of this paper to report on a characteristic of Mimosa-Al leather which, because of the known properties of vegetable/aluminium tanned leather, was not anticipated to raise problems but which, nevertheless, has been investigated for the sake of throughness and to dispel any doubts on this score. It is well known that, unless certain precautions are taken, chrome tanned leather which is subsequently heavily retanned with vegetable tannins is prone to become weaker in strength after storage under hot/humid conditions and it has been suggested that the same is true of Mimosa-Al leather. LIRI has performed many trials with the Mimosa-Al process over the past years and it has been possible to make a study of the ageing characteristics of leathers produced by this tannage as compared to other combination tannages. En ligne : https://drive.google.com/file/d/1G0EQ2I6eQFXxYotuZajInSb3crKjv6eH/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9234 [article]

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The effect of antiseptics and fungicides used in the leather industry on domestic sewage purified by activated sludge treatment / W. M. Fowler in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 70 (Année 1986)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 70 (Année 1986) . - p. 22-23 Titre : The effect of antiseptics and fungicides used in the leather industry on domestic sewage purified by activated sludge treatment Type de document : texte imprimé Auteurs : W. M. Fowler, Auteur ; S. G. Shuttleworth, Auteur Année de publication : 1986 Article en page(s) : p. 22-23 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antifongiques Antiseptiques Boues d'épuration Cuirs et peaux Eaux usées Index. décimale : 675 Technologie du cuir et de la fourrure En ligne : https://drive.google.com/file/d/1EdbdGKBaUk8jWH2XSEKqkpDUmFGB43kU/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9196 [article]

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