The environmental impact of waste chromium of tannery / B. Chattopadhyay in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 84, N° 2 (03-04/2000)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 84, N° 2 (03-04/2000) . - p. 94-100 Titre : The environmental impact of waste chromium of tannery Type de document : texte imprimé Auteurs : B. Chattopadhyay, Auteur ; S. Datta, Auteur ; A. Chatterjee, Auteur Année de publication : 2000 Article en page(s) : p. 94-100 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie analytique Eaux usées -- Teneur en chrome Environnement -- Etudes d'impact Pollution Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Six different sampling stations on tannery wastewater carrying canais and a wastewater-fed agriculture pond have been studied to estimate the concentration of total chromium of composite tannery effluents, stabilized tannery wastewater, tannery sludge, bottom sediments of the wastewater carrying canal and the soifs from agricultural plots which use wastewater in irrigation and sludge/sediments as landfill. These study sites are located in the east Calcutta wetland ecosystem (lat. 22°33'-22°50'N ; long. 88°25'-88°35'E), the biggest urban wetland ecosystem covering 12 500 ha, which includes 286 wastewater-fed fish ponds spread over 3832.27 ha (over 30 % of the total wetland area), producing 10 915 metric tonnes of fish annually. This wetland area has taken the load of wastes from Calcutta tannery agglomerates for nearly a century. Total Cr accumulation in bone, gill, muscle and liver tissues of six fish species and in peel and pulp of waterchestnut, cultivated in wastewater-fed aquaculture ponds, have been estimated. Total Cr concentration of roots, stems, leaves and fruits of important vegetable plants cultivated in the adjoining contaminated areas have also been estimated. Total Cr concentration in effluent (0.025-1.70 mgr') and sludge/sediments (0.125-59.86 g kg') have been recorded. Hexavalent Cr in sludge/sediment/soil varied from 0.00765 to 24.319 g kg". Total Cr concentration in different plant parts (4.97 4691.81 mg kg" dry wt.) and in net plankton (2.28 g kg" dry wt.) and fish tissues (0.96 181.82 mg kg dry wt.) have never been observed to be limiting to growth. Note de contenu : - Chromium in wastewater - Chromium in soil-sludge - Chromium in plants - Chromium in fishes - Table 1 : Trivalent and hexavalent Cr content (mean value in g kg') of tannery sludge/sediments - Table 2 : Total Cr content (mean value in mg kg' dw) of plants grown on tannery sludge and contaminated sites En ligne : https://drive.google.com/file/d/1ltsRjwbLJco2gVJUz4emnIv3YB58ilXB/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41465 [article]

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