Agro-Environmental Impact of High Rates of Phosphogypsum Applied to Bahiagrass Pasture on a Florida Spodosol Soil

Alcordo, I. S.; Rechcigl, J. E.; Littell, R. C.; Alva, A. K.; Roessler, C. E.

doi:10.1007/978-94-011-5068-2_37

Cited by 3 publications

(3 citation statements)

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“…PHOSPHOGYPSUM. According to Alcolordo et al (1998), three main avenues of use for phosphogypsum have been explored: 1) recovery of the S value is technically feasible, but not currently economical; 2) use as a base and as fill in road construction is feasible and economical, but is not permitted by the USEPA now because of the material's radionuclide content; and 3) use as a soil amendment. Phosphogypsum is an excellent source of Ca and especially S on agricultural land.…”

Section: Benefits Of Other Wastes For Land Application In Floridamentioning

confidence: 99%

“…The USEPA has determined that phosphogypsum can be used in unlimited quantities in agriculture as long as its 226 Ra content is £370 BqÁkg -1 . The limit generally permits the use of phosphogypsum from northern Florida, but does not allow the use of central Florida phosphogypsum, which generally contains %925 BqÁkg -1 (Alcolordo et al, 1998).…”

Section: Concerns Surrounding Reuse Of Compost and Other Wastes In Flmentioning

confidence: 99%

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Land Application of Compost and Other Wastes (By-products) in Florida: Regulations, Characteristics, Benefits, and Concerns

Hanlon

O’Connor

et al. 2010

hortte

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Compost is the product resulting from the controlled biological decomposition of organic material that has been sanitized through the generation of heat and processed to further reduce pathogens as defined by the U.S. Environmental Protection Agency and stabilized to the point that the compost is beneficial to plant growth. Organic materials used for composting in Florida are mainly yard wastes (trash) and food wastes. More than 5.7 million tons of composts could be produced from yard trash and food waste in the state. Animal manure and biosolids (treated sludge) can also be composted, but are not discussed in this article. “Other wastes” as discussed herein [food processing wastes, coal ash, wood ash, drinking water treatment residuals (WTRs), and phosphogypsum] are by-products of leading Florida industries and are available in large quantities for reuse. About 5 million tons of food processing waste [citrus (Citrus spp.) and vegetables alone], 1.85 million tons of coal ash (from 28 coal-burning power plants), 0.05 million tons of wood ash, 1000 million tons of phosphogypsum (from the state's phosphate fertilizer industry), and significant, but unknown, amounts of WTRs are available. Due to the growing interest in sustainable agriculture practices, this article is intended to discuss the current regulations and guidelines for composting and the use of composts and other wastes in Florida, the characteristics, benefits, and concerns of Florida compost and other wastes, and current research and needs of research and extension for incorporating compost and other waste materials in Florida's sustainable agriculture. Our literature search was largely limited to studies conducted in Florida.

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Section: Benefits Of Other Wastes For Land Application In Floridamentioning

confidence: 99%

Section: Concerns Surrounding Reuse Of Compost and Other Wastes In Flmentioning

confidence: 99%

Land Application of Compost and Other Wastes (By-products) in Florida: Regulations, Characteristics, Benefits, and Concerns

Hanlon

O’Connor

et al. 2010

hortte

View full text Add to dashboard Cite

show abstract

“…466/2001 establishes maximum levels of Cd, Pb and Hg in plant material and fruits for human consumption. Thus, some studies have been performed on the environmental impact and the radiological and alimentary safety in the agricultural use of PG [1,9,[11][12][13]. On the other hand, it has been found that PG reduces the leaching of As, Cd, Tl, Pb, Zn and Ni in acid soils [14,15].…”

Section: Introductionmentioning

confidence: 99%