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Titre : Tannery effluent control in India Type de document : texte imprimé Année de publication : 2012 Langues : Anglais (eng) Catégories : Bacillus subtilis
Biomasse
Biosorbant
Cuirs et peaux -- Industrie -- Aspect de l'environnement
Eau -- Epuration
Eaux usées -- Recyclage
Eaux usées -- Stations de traitementsIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The chrome tanning process results in the discharge of chromium in the effluent, which is of major concern and calls for treatment. Currently practiced chrome management methodologies suffer from drawbacks such as high capital and operational costs, so there is a need for the development of a low cost methodology, using easily available materials that can remove chromium effectively.
Bacillus subtilis is widely used inthe commercial production of various enzymes, and in this study, dead B. subtilis biomass has been used for the removal of trivalent chromium. Availability and cost effectiveness are the two major factors to be taken into account while selecting the biomass. Advantages of using dead B. subtilis biomass mainly rest on the abundant availability of the source of biomass, which comes from the existing enzyme fermentation industries. Being a waste product makes B. subtilis a very cost effective biosorbent. Also, the use of dead cells in biosorption is most advantageous for waste water treatment in that the dead organisms are not affected by toxic wastes ; they do not require a continuous supply of nutrients and they can be regenerated and reused for many cycles. Dead cells may be stored or used for extended periods at room temperature without putrefaction.En ligne : https://drive.google.com/file/d/1v-xco1VGHDK9jQOWKP0ZWbqfI1SC1yR7/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15623
in LEATHER INTERNATIONAL > Vol. 214, N° 4817 (01-02/2012)[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13647 - Périodique Bibliothèque principale Documentaires Disponible Tannery effluent problems / K. W. Pepper in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXI (Année 1966)
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Titre : Tannery effluent problems Type de document : texte imprimé Auteurs : K. W. Pepper, Auteur Année de publication : 1966 Article en page(s) : p. 570-584 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Coût -- Contrôle
Cuirs et peaux -- Industrie -- Aspect de l'environnement
Eaux usées -- Décontamination
Eaux usées -- Epuration
Eaux usées -- Stations de traitements
Tannage -- Aspect de l'environnement
Tannage -- DéchetsIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Charges for the treatment or disposai of tannery effluent are unproductive costs ; hence the overall objective of BLMRA work has been to reduce costs with minimum interference to production or leather quality. In addition, specific technical problems have arisen because certain tanners have been forced to comply with stringent requirements in order to be able to stay in business. A complete account of the subject would include details of recent U. K. legislation and of the various methods used for assessing charges, but time permits only a brief mention.
Broadly speaking, tannery effluent in the U. K. may be discharged in three different ways :
1. To the open sea.
2. To rivers or streams.
3. To towns' sewers for treatment by local sewage works.
Discharges to rivers and streams are subject to licenses issued by the appropriate authorities which impose strict limits for the composition of the effluent. Limits for discharges to towns' sewers are usually somewhat less severe but the sewage works are now empowered to make charges commensurate with the costs of treatment. British leather manufacturers, wherever situated, are under strong pressure to improve the composition of tannery effluent.
Although the basic problems are similar everywhere, our work and experience have been greatly influenced by the requirements of U.K. legislation, and I realize that some aspects of the problem may have different emphasis and importance in the U.S.A.Note de contenu : - MAIN ASPECTS OF THE PROBLEM : Volume - Suspended solids - Soluble solids - Biochemical Oxygen Demand (BOD) - pH value - Chromium - Sulfide - Fats and grease - Inflammable solvents
- MODIFICATIONS TO TANNERY PROCESSES
- TREATMENT OF EFFLUENT AT THE TANNERY : Neutralization of acid or alkali - Sulfide - Chromium - Biological oxidation - Grease and fats
- INFLUENCE OF COMPONENTS OF TANNERY EFFLUENT ON SEWAGE TREATMENT PROCESSES : Percolating filters - Activated sludge plant - Anaerobic sludge digestion
- Table 1 : Normal constituents of tannery effluent
- Table 2 : Toxic constituents of tannery effluentEn ligne : https://drive.google.com/file/d/110VmRA-0HWLcRJ6PckVy1WBKtg8XetoX/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37946
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXI (Année 1966) . - p. 570-584[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 008496 - Périodique Archives Documentaires Exclu du prêt Tannery effluent treatment updates / Karl Flowers in INTERNATIONAL LEATHER MAKER (ILM), N° 62 (11-12/2023)
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Titre : Tannery effluent treatment updates Type de document : texte imprimé Auteurs : Karl Flowers, Auteur Année de publication : 2023 Article en page(s) : p. 46-50 Langues : Anglais (eng) Catégories : Déchets industriels -- Elimination
Eaux usées -- Décontamination
Eaux usées -- Epuration
Eaux usées -- Recyclage
Eaux usées -- Stations de traitements
Tannage -- DéchetsIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Modern tannery waste treatment is an extension of the effluent treatment sector that exists beyond the leather industry. Expertise that is appropriated for the leather industry is either innovated inside the leather industry or is external technology that is used inside tanneries.
Tanneries are well practiced at wastewater treatment and have invented new methods for treatment, given a set of operating conditions with which they must meet and within the by-laws (and national laws) by which they are constrained. The levels of permitted release vary due to the sensitivity of the elemental flow from the treatment plant to a natural system. For example, South African rivers are long and are prone to salinisation sensitivity, thus the release of total dissolved solids, especially sait, is restricted. A similar situation exists in Australia. Short rivers, like some of those seen in Europe mean that sait is less of a priority.Note de contenu : - Old ways
- Physical
- Biological
- Chemical
- Modern methods
- Advanced oxidation
- Anaerobic membrane bioreactors (An-MBR)
- Energy recovery from wastewater
- Microbial electrosynthesis
- Fig. 1 : Clarification (physico-chemical treatment)
- Fig. 2 : Crossflow membrane technology
- Fig. 3 : Electrodialysis
- Fig. 4 : Upflow oxidation columnsEn ligne : https://drive.google.com/file/d/1gRytIKQSHxTIBuEiG0MdfdfliwldkNNf/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40210
in INTERNATIONAL LEATHER MAKER (ILM) > N° 62 (11-12/2023) . - p. 46-50[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24298 - Périodique Bibliothèque principale Documentaires Disponible Testing permeation resistance in coatings for wastewater structures in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 27, N° 9 (09/2010)
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Titre : Testing permeation resistance in coatings for wastewater structures Type de document : texte imprimé Année de publication : 2010 Article en page(s) : p. 16-28 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Corrosion microbienne
Eaux usées -- Stations de traitements
Résistance à la perméation
Revêtements:PeintureIndex. décimale : 667.9 Revêtements et enduits Résumé : The authors report on ongoing research about the effect of permeation resistance of coatings used protect wastewater treatment structures. Early results indicate the importance of a coating's permeation resistance to sewer gases as well as acids. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10107
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Code-barres Cote Support Localisation Section Disponibilité 012500 - Périodique Bibliothèque principale Documentaires Disponible The need for an independent third-party coatings inspector / Tim Bauman in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 35, N° 2 (02/2018)
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Titre : The need for an independent third-party coatings inspector Type de document : texte imprimé Auteurs : Tim Bauman, Auteur Année de publication : 2018 Article en page(s) : p. 38-46 Langues : Américain (ame) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique.
L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1.
C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple.
Adhésion -- Défauts
Analyse des défaillances (fiabilité)
Copolymère vinyle ester
Eaux usées -- Stations de traitements
Epoxydes
Expertises
Matériaux cimentaires -- Revêtements protecteurs
Métaux -- Revêtements protecteurs
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.
Ponts -- Revêtements protecteurs
Revêtements -- Défauts:Peinture -- Défauts
Revêtements -- Détérioration:Peinture -- Détérioration
Revêtements organiques
Traitement de surface par impactIndex. décimale : 667.9 Revêtements et enduits Résumé : During my career in the coatings world, I grew from a green sales rep into an SSPC- and NACE-certified inspector, who later became a trainer in the protective coatings industry. I believe that no matter what your training or what college or graduate school you went to, the world of heavy-duty protective coatings is so expansive that sooner or later you will need to enlist a coatings specialist, expert or consultant to understand why things are done the way they are and to take steps to make certain that the specification is enforced.
For example, a good engineer knows that for coatings or linings to do what they intend to do, abrasive blasting is almost always required. A good engineer may know that concrete needs to be blasted but may not know some of the finer points (i.e., the ICRI Standards that call out specific concrete surface preparation results based on the total film thickness of the system that is specified) that are critical to a successful linings project.
Over my 30-year tenure in this field, I have seen many coating failures. I remember in my certification courses listening to the grizzled vets tell their “old war stories.” Now I have my own, three of which I am going to share with you. The point of this article is that an independent third-party coatings inspector, while not always required, is a very good idea and certainly worth the money involved. The three stories I’m going to tell you are true, but the names are changed to protect the innocent as well as the guilty.En ligne : http://www.paintsquare.com/archive/?fuseaction=view&articleid=6257 Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30375
in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 35, N° 2 (02/2018) . - p. 38-46[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19720 - Périodique Bibliothèque principale Documentaires Disponible Total degradation or environmental experiment ? / C. Brunner in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 37, N° 5/2000 (09-10/2000)
PermalinkZero-emission pre-treatment and electrocoating / Pashalis Simos in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 13, N° 2 (2020)
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