Treatment of slaughterhouse wastewater by integrated anaerobic/aerobic bioreactors loaded with immobilized nanoporous activated carbon / P. Maharaja in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 9 (09/2021)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVI, N° 9 (09/2021) . - p. 303-311 Titre : Treatment of slaughterhouse wastewater by integrated anaerobic/aerobic bioreactors loaded with immobilized nanoporous activated carbon Type de document : texte imprimé Auteurs : P. Maharaja, Auteur ; M. Mahesh, Auteur ; N. Prabhakaran, Auteur ; K. Patchaimurugan, Auteur ; S. Swarnalatha, Auteur ; G. Sekaran, Auteur Année de publication : 2021 Article en page(s) : p. 303-311 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Abattoirs Bioréacteurs Charbon actif Eaux usées -- Epuration Matériaux nanoporeux Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Slaughterhouse wastewater consists of moderate to high strength complex wastewater comprising about 45% soluble and 55% coarse suspended organics exhibiting high COD and BOD levels. Conventional wastewater treatment methods cannot effectively treat slaughterhouse wastewater. Thus, a four-stage sequential anaerobic/aerobic immobilized bio reactor system comprising a two stage Fluidized Anaerobic immobilized Reactor (FAIR – I and FAIR – II), a Fluidized Immobilized Cell Carbon Oxidation (FICCO) reactor and a Chemo Autotrophic Activated Carbon Oxidation (CAACO) reactor was tested in a slaughterhouse treating wastewater between 3 m3 /day to 17 m3 /day. Nanoporous activated carbon (NPAC) was used for the immobilization of microorganisms in all of the reactors. The NPAC BET surface area was found to be 291 m2/g with the average pore diameter of 28 Ã…. Spin density (free electrons) in the NPAC, was calculated to be 16 x 1018 spins/g using ESR spectroscopy. The overall NH3-N, TKN, COD and BOD removal efficiency was 64%, 71%, 82% and 85% respectively. Multivariate analysis (PCA and cluster analysis) found that the COD removal by the FICCO and CAACO reactors is more efficient than the FAIR reactors. The treatment was confirmed through UV-visible and UV-fluorescence spectroscopic analysis. Note de contenu : - MATERIALS AND METHODS : Materials - Source and collection of slaughterhouse wastewater - NPAC preparation - NPAC characterization - Treatment scheme for slaughterhouse wastewater - DESCRIPTION OF THE REACTORS : FAIR reactor details - FICCO reactor details - CAACO reactor details - Chemical analysis and instrumental methods - Statistical analysis - RESULTS AND DISCUSSION : Characteristics of NPAC - Performance evaluation of the four stage reactors - Multivariate statistical analysis (PCA and cluster analysis) - Catalyst NPAC organic cleavage mechanistic view - Instrumental evidence - Table 1 : Surface areas, pore volume and pore dimension of ECS - Table 2 : Slaughterhouse wastewater treatment efficacy at the various stages DOI : https://doi.org/10.34314/jalca.v116i9.4400 En ligne : https://drive.google.com/file/d/17WP86tWoKrfQvU6YcYVVQWHlFJ6UsbU4/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36401 [article]

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