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Friday, July 31, 2020 | History

2 edition of Removal and recovery of sulfide tannery wastewater found in the catalog.

Removal and recovery of sulfide tannery wastewater

Robert H Sayers

Removal and recovery of sulfide tannery wastewater

by Robert H Sayers

  • 68 Want to read
  • 35 Currently reading

Published by Environmental Protection Agency, Office of Research and Development, Industrial Environmental Research Laboratory, for sale by the National Technical Information Service in Cincinnati, Ohio, Springfield, Va .
Written in English

    Subjects:
  • Tanneries -- Waste disposal,
  • Sulfides

  • Edition Notes

    Statementby Robert H. Sayers and Roger J. Langlais
    SeriesEnvironmental protection technology series ; EPA-600/2-77-031
    ContributionsLanglais, Roger J , joint author, Industrial Environmental Research Laboratory (Cincinnati, Ohio), Blueside Company
    The Physical Object
    Paginationxi, 130 p. :
    Number of Pages130
    ID Numbers
    Open LibraryOL14887477M

    Metal contamination in the environment is a persisting global issue. The metal reservoirs in the earth have declined due to society’s needs and due to uncontrolled mining activities. Therefore, the idea to recover metals from waste streams has emerged. In this thesis, cost competitive technologies such as adsorption using agro-wastes and precipitation using an inverse fluidized bed (IFB. Removal of Chromium(III) from the Waste Solution of an Indian Tannery by Amberlite IR Resin. International Journal of Nonferrous Metallurgy , 01 (03),

    Wiemann M, Schenk H, Hegemann W. Anaerobic treatment of tannery wastewater with simultaneous sulphide elimination. Water Res ; – Wiheeb AD, Shamsudin IK, Ahmad MA, Murat MN, Kim J, Othman MR. Present technologies for hydrogen sulfide removal from gaseous mixtures. Rev Chem Eng ; – The book presents an overview of the tanning industry-its characteristics, pollution impacts, processes and various treatment methods and disposal techniques, which have been experimental or put into practice over the past few decades, including the important data on tanning industries. It also deals with the cost considerations of the treatment technique and economic assessment of the.

    Información del artículo Anaerobic treatment of tannery wastewater with sulfide removal and recovery of sulfur from wastewater and biogas. Wastewater aerated for a few hours in the absence of sulfide and then supplied with sulfide is found to have acquired the ability to oxidize sulfide at a high rate. In wastewater containing sulfide and one mg/1 or more of dissolved oxygen, 20 percent to 30 percent of the oxygen reacting in a typical case will serve to oxidize sulfide; the rest.


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Removal and recovery of sulfide tannery wastewater by Robert H Sayers Download PDF EPUB FB2

The practicality of a sulfide removal-recovery system. The system is based on the removal of the sulfide as hydrogen sulfide gas from the clarified acidified wastewater. The hydrogen sulfide gas released is absorbed in sodium hydroxide, forming a solution of sodium sulfide which is re-used in the tannery's.

Get this from a library. Removal and recovery of sulfide from tannery wastewater. [Robert H Sayers; Roger J Langlais; Blueside Company.; Industrial Environmental Research Laboratory (Cincinnati, Ohio)]. EPA/ December REMOVAL AND RECOVERY OF SULFIDE FROM TANNERY WASTEWATER by Robert H.

Sayers and Roger J. Langlais The Blueside Company, Inc. Joseph, Missouri Grant No. EPC Project Officer W. Banks Permits Branch EPA Region VII Kansas City, Missouri INDUSTRIAL ENVIRONMENTAL RESEARCH LABORATORY OFFICE.

The present study demonstrates about the possibility of removal of sulfide and reduction of chemical oxygen demand (COD) from the tannery lime wastewater using both electrochemical and photoelectrochemical oxidation processes.

% of sulfide and bad odour were effectively removed from the lime wastewater using both the EO and PEO processes Cited by: 1.

Treatment of tannery unhairing wastewaters by captured CO 2 and zinc. Simultaneous greenhouse gas capture, pollution removal and treated water recycling. • Lime neutralization, COD removal and sulphide (S 2−) precipitation with high rate.

More than 80 % removal of sulfide from unhairing wastewater was by: 1. The electrochemical oxidation of a real tannery effluent with very high organic load and sulfide content was assessed by galvanostatic electrolysis, utilizing different electrode materials, Ti/Pt/PbO 2, Ti/Pt/SnO 2 – Sb 2 O 4 and BDD.

Assays were run for 8 h, under a current density of 30 mA cm −2, in a batch with stirring electrochemical efficiencies Removal and recovery of sulfide tannery wastewater book the electrodes were tested. In a recent review on sewage sulfide removal, high cost was reported as one of the main disadvantages of the existing sulfide removal processes (Zhang et al., ).

Recently, an electrochemical approach was proposed for wastewater sulfide removal, in which sulfide can be directly oxidized at an anode (Rabaey et al., ). Books; Join AIChE; ; Environmental Progress & Sustainable Energy and combined EC/EO processes for the treatment and recovery of tannery wastewater were investigated.

In this way, not only the effect of retention time and current density on the COD and color removal was investigated, but also, the recovery of effluent was. Flux recovery with enzymatic cleaning hardly reached an efficiency of 35%. Hydrogen Sulfide and Chromium Removal of Tannery Wastewater and a General view to Tannery Wastewater.

Bar screening, removal of larger solids Discharge limits for treated tannery effluents in France, Italy and India Annex Typical tannery ETP auxiliary chemicals and their dosing Annex Environmental effects of the main constituents of tannery effluents wastewater treatment in order to reduce the overall cost of treatment.

A new process, namely, IERECHROM® (Ion Exchange Recovery of CHROMium), has been developed for removal, recovery and reuse of Cr(lII) ionic complex from segregated tannery wastewaters.

The process is based on the use of a weak electrolyte macroporcus carboxylate resin, retaining the metal of reference together with other trace metals, including. A.G Espantaleón et al.,(). Use of activated clays in the removal of dyes and surfactants from tannery waste waters.

Applied Clay Science, ,24 (), pp Lidia Szpyrkowicz, Santosh N. Kaul, Rao N. Neti. Tannery wastewater treatment by electro-oxidation coupled with a biological process.

Tannery wastewater: Organic load and sulfide removal dynamics by electrochemical oxidation at different anode materials. Highlights•Effectiveness of metal oxides and BDD in the electro-oxidation of tannery effluents.•Much lower charge consumptions when compared to similar processes from literature.•Efficacy in sulfide removal from tannery effluents at all tested anodes.•Dependency of.

sulfide by air using activated carbon as catalyst gained importance for its removal of COD, BOD and TOC in addition to elimination of sulfide in wastewater (Sekaran et al., ). So, in this context, the tannery industry is review various oxidation and combined processes for the recovery and recycle of chemicals and water in.

Improvements in the treatment of lime-sulfide unhairing wastes from both salt-cured and unsalted hides are provided. After undissolved lime is flocculated out of the waste of a salt-cured hide and the supernatant acidified to liberate hydrogen sulfide, the hydrogen sulfide is flashed off under reduced pressure at about from ° to ° F.

The environmental protection regulations stipulate that industries are not allowed to emit sulfide and chromium in the wastewater. Thus, removal of these high-strength toxic chemicals from the wastewater is very important.

Treatment of tannery wastewater is carried out by physical, chemical, biological, or combination of these methods. The removal of chemical oxygen demand (COD), total organic carbon (TOC), turbidity, and chromium content from tannery wastewater at different stages of the process was experimentally investigated.

chromium removal and its recovery from tannery waste water in Ethiopia. Chemistry International 3(4) () Chemistry International 3(4) () - Genschow et al.

() also removed sulfide from tannery wastewater by using two-stage anaerobic treatment. Goltara et al. () reported a membrane sequencing batch reactor (MSBR) to treat.

A number of researchers worked on the removal of sulphide and chromium from the wastewater streams, but little has been reported on the sulphide, chrome and other toxic components removal from the tannery wastewater. In this review, characteristics of tannery wastewater and methods tannery wastewater treatment have been discussed.

Adey Feleke Desta, Joyce Nzioki, Solomon Maina and Francesca Stomeo (March 29th ). Molecular Biomonitoring of Microbial Communities in Tannery Wastewater Treatment Plant for the Removal of Retanning Chemicals, Biological Wastewater Treatment and Resource Recovery, Robina Farooq and Zaki Ahmad, IntechOpen, DOI: / Available from.The biological treatment of the tannery wastewater substreams beamhouse (BH, pre-tanning steps) and tan-yard wastewater (TY, tanning, & wet-finishing process steps) and the application of an.Wastewater treatment Tanning industry is one of the oldest industries of the world and the problem of treatment and disposal of these wastes is probably as old as the industry itself.

Tanneries wastewater effluent is treated in many different ways. There are situations in which an individual tannery applies all.