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Chromite ore processing residue in Hudson County New

Abstract Chromite ore processing residue occurs at over 130 sites in Hudson County New Jersey Many of these sites are in urban residential areas This waste is a result of 70 years of chromate and bichromate chemical manufacturing At least 15 of the sites

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Chromite Ore Processing Residue COPR Hazardous

Chromite ore processing residue COPR which contains hexavalent chromium Cr 6 at concentrations typically in the range of thousands of milligrams kilograms was deposited over a timeframe of 50 years as fill at a site referred to as SA7 in New Jersey

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Chromite ore processing residue in Hudson County New

Chromite ore processing residue occurs at over 130 sites in Hudson County New Jersey Many of these sites are in urban residential areas This waste is a result of 70 years of chromate and bichromate chemical manufacturing At least 15 of the sites contain

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Treatment of Chromium Contamination and Chromium Ore Processing Residue

Technical Paper Treatment of Chromium Contamination and Chromium Ore Processing Residue Richard Bewley URS Corporation Ltd 1 INTRODUCTION Chromium Cr is a heavy metal which has historically been used in a wide range of industrial applications including steel pigments wood preservatives electroplating metal finishing dyes leather tanning textiles and chemical manufacture

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Jersey City Chromium Cleanup On site Work

From the 1900s until the 1970s a chrome manufacturing by product called chrome ore processing residue was used as fill in parts of Jersey City including the Route 440 properties The remediation also addressed non chromium contaminants primarily lead that

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COPR

Most relevant lists of acronyms and abbreviations for COPR Chromium Ore Processing Residue 1 chromium 1 ore 1 processing 1 residue 1 iron 1 material 1 environment 1 technology Alternative Meanings 20 alternative COPR meanings COPR Chromite Ore

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COPR

COPR abbreviation stands for Chromite Ore Processing Residue All Acronyms Search options Acronym Meaning How to Abbreviate List of Acronyms Popular categories Texting Medical Technology Business Military Clear Suggest COPR stands for medical ore

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Baltimore Chromium Residue Cleanup

Chromium processing at the former Baltimore Works plant in the Inner Harbor produced chromium ore processing residue COPR COPR from the Baltimore site was used as a fill material in certain areas around the harbor primarily at the Dundalk Marine Terminal

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Long Term Leaching Characteristics of Chromite Ore

Long term leaching characteristics of chromium ore processing residue COPR ≈ 250 pore volumes of flow PVF was investigated using laboratory flow through column testing with synthetic groundwater GW Two saturated flow through column experiments

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US7670576B2

ore processing processing residue Prior art date 10 Legal status The legal status is an assumption and is not a legal conclusion Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed expires

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Speciation and spatial distribution of Cr in chromite ore

Remediation of COPR sites requires the key information including chromium oxidation speciation and spatial distribution Samples were gathered from a COPR site in Luliang County in Qujing Yunnan Province of China The total Cr Cr VI and chromium species were investigated Results indicated the concentration of total Cr was between 110 5 and 21 774 amp nbsp mg kg and the concentration of Cr VI

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Remediation of chromite ore processing residue using

Batch tests were conducted to assess the potential use of ferrous sulfate and calcium polysulfide for the remediation of chromite ore processing residue COPR The remediation process entails addition of ferrous sulfate or calcium polysulfide to chemically reduce hexavalent chromium Cr VI to trivalent chromium Cr III in slurry form and pH adjustment to precipitate Cr III as chromium

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Leaching mechanisms of Cr VI from chromite ore

nbsp 0183 32 1 J Environ Qual 2008 Oct 23 37 6 34 doi 10 2134 jeq2007 0443 Print 2008 Nov Dec Leaching mechanisms of Cr VI from chromite ore processing residue Wazne M 1 Jagupilla SC Moon DH Christodoulatos C Koutsospyros A Author information 1 Center for Environmental Systems Stevens Institute of Technology Castle Point on Hudson Hoboken NJ 07030 USA

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Leaching of hexavalent chromium from young chromite

3 4 Extractable chromate and chromium oxidation state in the chromite ore processing residue solid phase Table 2 summarizes the extractable amounts of CrO 4 2− and the ratio of Cr VI Cr total in the COPR as determined by X ray absorption near edge structure XANES spectroscopy Supplemental Figures S5 and S6

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Leaching mechanisms of Cr VI from chromite ore

Batch leaching tests qualitative and quantitative x ray powder diffraction XRPD analyses and geochemical modeling were used to investigate the leaching mechanisms of Cr VI from chromite ore processing residue COPR samples obtained from an urban area in Hudson County New Jersey The pH of the leaching solutions was adjusted to cover a wide range between 1 and 12 5 The

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