1 edition of Hydrologic evaluation of final cover system alternatives for closure of phosphogypsum stacks found in the catalog.
Hydrologic evaluation of final cover system alternatives for closure of phosphogypsum stacks
Nadim F. Fuleihan
|Statement||Nadim F. Fuleihan and Thomas S. Ingra, principal investigators, with Rodrigo Home ; prepared for Florida Institute of Phosphate Research|
|Contributions||Ardaman & Associates, Florida Institute of Phosphate Research|
|LC Classifications||TD427.P56 H93 2005|
|The Physical Object|
|Pagination||2 v. :|
|LC Control Number||2010497219|
Managing water in our phosphogypsum stacks is an important part of Mosaic’s manufacturing operations. In , our Riverview gypstack experienced a breach. The incident occurred in a year when an unprecedented four hurricanes struck Florida, leaving the region saturated as a result of extraordinarily high natural water levels and much higher. phosphogypsum particles will pass the # sieve. Morphological Analysis Morphology was investigated by optical and scanning electron microscopy (SEM). Particles were generally radiating ag-TABLE 2 TYPICAL TRACE ELEMENT CONCENTRATIONS IN PHOSPHOGYPSUM Element Concentration (ppm) As 1 -5 Ba 50 Cd Cr Pb 2 Hg SeFile Size: 4MB.
Excerpt from Term Paper: Leachate. This term refers to the liquid that has passed through or emerged from phosphogypsum. Liner. This term refers to a continuous layer of low permeability natural or synthetic materials which controls the downward and lateral escape of waste constituents or leachate from a phosphogypsum stack system. Although additional work is needed prior to acceptable application of red mud and phosphogypsum as alternative construction materials, the assessment approach of this study provides an indication that advanced leaching tests can facilitate evaluation of potential environmental impacts in a Author: Ryan Anderson Kirkland.
phosphogypsum would not represent a high risk in the building industry. However, as only 4% of the phosphogypsum world production is used in agriculture, in gypsum board and cement industries, some million Mg of them are accumulated annually, most of which are piled in stacks close to the fertilizer factories, therefore creating a complex. quality of phosphogypsum for use in cement and * Author for correspondence. other applications. Based on the wet sieving of the phosphogypsum, a pilot plant of capacity It/shift has been installed at CBRI and successfully run to make beneficiated phosphogypsum'2. The quality of the phosphogypsum before and after beneficiation and itsFile Size: KB.
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«Back. Hydrologic Evaluation of Final Cover System Alternatives for Closure of Phosphogypsum Stacks. Volume I. v1Final. The measured hydrologic performance of three phosphogypsum stack system top gradient final cover alternatives and six side slope final cover alternatives over a 3-year period are presented.
Other research related to phosphogypsum stack closure includes: • Establishing Vegetation Cover on Phosphogypsum in Florida. FIPR Publication No. • Hydrologic Evaluation of Final Cover System Alternatives for Closure of Phosphogypsum Stacks.
FIPR Project No. File Size: 1MB. Phosphogypsum refers to the calcium sulfate hydrate formed as a by-product of the production of fertilizer from phosphate is mainly composed of gypsum (CaSO 4 2H 2 O).
Although gypsum is a widely used material in the construction industry, phosphogypsum is usually not used, but is stored indefinitely because of its weak long-range storage is controversial. Physical, chemical, and hydrologic evaluations of the cover system confirmed that plants were successfully growing in various soil capping depths and were often rooting more than mm into the PG.
Percolation past the substrate into PG during a typical storm event was low (Cited by: 2. EPA requires that phosphogypsum be managed in engineered stacks, which are designed to limit emissions of radon and other radionuclides.
Owners and operators must monitor and report radon emissions from inactive stacks and take measures to keep radon emissions within the regulatory limit of 20 picocuries per square meter per second.
40 GFR 61 Subpart R National Emission Standards for Radon Emissions from Phosphogypsum Stacks R^ POTENTIAL USES OF PHOSPHOGYPSUM AND ASSOCIATED RISKS BACKGROUND INFORMATION DOCUMENT for 40 CFR 61 Subpart R National Emission Standards for Radon Emissions from Phosphogypsum Stacks Craig Conklin Work Assignment Manager Prepared.
Gypsum is the necessary evil in making fertilizer its the toxic waste you cant that might not be true much in the far-back country of Polk County is a group of engineers.
6 Environmental impacts associated with phosphogypsum dumping yards 12 7 Guidelines for transportation, storage, management, handling and safe disposal of phosphogypsum 13 8 Guideline for utilisation of phosphogypsum 19 9 Monitoring protocol for assessment of environmental impacts in and around the phosphogypsum stacks 22File Size: 2MB.
Final cover. This term refers to materials used to cover the top and sides of a phosphogypsum stack upon closure. Geomembrane. This term refers to a low-permeability synthetic membrane used as an integral part of a system designed to limit the movement of liquid or gas in the system.
Lateral expansion. Phosphogypsum stacks are typically constructed at natural grade, range in height from 50 feet to feet, and can be as large as acres. Process water is contained in a pond, or ponds, on top of the gypsum stack as free water and in the pores of phosphogyp-sum crystals as interstitial water.
Currently in Florida, there are 24 phosphogypsum. Phosphogypsum (PG) is a waste product of the phosphate fertilizer industry. Because mainly of Ra and heavy metals the use of PG in construction is impractical, and 85% of PG produced worldwide is dumped in stacks, where it poses environmental and human health hazards.
– bt of PG has been produced in lifetime of. HEAVY METAL ASSESSMENT OF PHOSPHOGYPSUM WASTE STOCKPILE MATERIAL FROM JORDAN1 Al-Hwaiti, M.1, V. Carney, J. Ranville, and P.
Ross Abstract: Phosphogypsum is a waste by-product of the phosphate fertilizer industry. The phosphate industry File Size: 2MB. Phosphogypsum (PG: CaSO42H2O) is a waste product generated by the phosphate industry. World production of this waste exceeds million tonnes per year. A detailed geotechnical and environmental laboratory investigation of phosphogypsum (a by-product of the phosphoric acid production industry) is presented in this paper.
The aim of the investigation programme was to evaluate the potential of Greek phosphogypsum for alternative uses, such as in the rehabilitation of quarries and mines by filling Cited by: 1. Permitting of Phosphogypsum Stack Systems: 5/9/ Phosphogypsum Stack System General Criteria: 7/2/ Phosphogypsum Stack System Construction Requirements: 3/25/ Closure of Phosphogypsum Stacks: 7/2/ Closure Plan Requirements: 3/25/ Closure Procedures: 3/ Several samples of phosphogypsum were obtained either from phosphate rock processing plant, phosphate industry that was installed and is operating since May at Thessaloniki, Northern Greece, named SICNG (Societe Industries Chimiques du Nord de la Grece SA) (), or from phosphogypsum stacks located at Pentalofos region in the Thessaloniki prefecture ().Cited by: Phosphogypsum is a waste by-product of the phosphate fertilizer industry.
The phosphate industry in Jordan has generated over 40 million tons of this waste material. Reassessment Of The Risks From Pounds Of Phosphogypsum As the current NESHAP permits the use of pounds of phosphogypsum, regardless of radmm content, m a single research and development activity, the first stefoftoe reassessment is to correct the errors and overly conservative assumptions identified in the previous assessment and re-estimate the risks from exposure to the.
Assessment of Existing Phosphogypsum Stacks (Repealed) 2/16/ Procedures for Raising Phosphogypsum Stacks: 7/19/ Procedures for Decanting Process Water from Top of Phosphogypsum Stack: 6/28/ Phosphogypsum Stack Inspection and Maintenance: 6/28/ Phosphogypsum Stack System.
Phosphogypsum Storage, for which Ministry of Energy, Development and Environmental Protection of the Republic of Serbia prescribed scope and content of the study. A radiological evaluation of phosphogypsum. Laiche TP(1), Scott LM. Author information: (1)Nuclear Science Center, Louisiana State University, Baton Rouge Phosphogypsum is the by-product resulting from phosphoric acid or phosphate fertilizer by: The treatment of phosphates for the production of phosphoric acid and fertilisers at Navodari, Romania, has resulted in the production of over 3, m 3 of phosphogypsum, which have been disposed of in three stacks over an area of 40 ha.
An environmental characterisation study followed by a risk assessment analysis performed on a source-pathway-target basis has shown that phosphogypsum is Cited by: Phosphogypsum Problem • ~ Million to 1 billion tons in stacks in Florida • ~40 Million tons being added each year • Closure of stacks requires discharge of water • The State may require substantially financial responsibility assurances Florida Institute of Phosphate Research.