Assessing Bioavailability of Metals in Biosolids-treated Soils - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Assessing Bioavailability of Metals in Biosolids-treated Soils write by A. C. Chang. This book was released on 2003. Assessing Bioavailability of Metals in Biosolids-treated Soils available in PDF, EPUB and Kindle.
Assessing Bioavailability of Metals in Biosolid-treated Soils
Assessing Bioavailability of Metals in Biosolid-treated Soils - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Assessing Bioavailability of Metals in Biosolid-treated Soils write by Bon Jun Koo. This book was released on 2001. Assessing Bioavailability of Metals in Biosolid-treated Soils available in PDF, EPUB and Kindle.
Assessing Bioavailability of Metals in Biosolids-Treated Soils
Assessing Bioavailability of Metals in Biosolids-Treated Soils - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Assessing Bioavailability of Metals in Biosolids-Treated Soils write by A. C. Chang. This book was released on 2004-07-31. Assessing Bioavailability of Metals in Biosolids-Treated Soils available in PDF, EPUB and Kindle. Plant-availability of metals in biosolids-treated soils may be mathematically described by Mt = C x [1 - e- (k x t)] where Mt (mg kg-1) is the cumulative metal removal from the biosolids-treated soils by growing and harvesting plants for t years, C is the total phytoavailable metal pool of the soil (mg kg-1) at t = 0, and k is the metal absorption rate coefficient (yr-1). The total available metal pool, C, is defined as metals extractable by organic acids in the rhizosphere of growing plants and k is related to the kinetics of metal release by organic acids. Half-life of the available metals in biosolids-amended soils may be derived from k.Experiments were conducted to characterize the concentration and composition of the organic acids. A successive extraction method was used to extract metals from biosolids-treated soils for determinging C and k. In this manner, the plant available metals of the biosolids-treated soils are defined by the total available metals, half-life, and duration of plant growing.
Bioavailability of Contaminants in Soils and Sediments
Bioavailability of Contaminants in Soils and Sediments - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Bioavailability of Contaminants in Soils and Sediments write by National Research Council. This book was released on 2003-05-03. Bioavailability of Contaminants in Soils and Sediments available in PDF, EPUB and Kindle. Bioavailability refers to the extent to which humans and ecological receptors are exposed to contaminants in soil or sediment. The concept of bioavailability has recently piqued the interest of the hazardous waste industry as an important consideration in deciding how much waste to clean up. The rationale is that if contaminants in soil and sediment are not bioavailable, then more contaminant mass can be left in place without creating additional risk. A new NRC report notes that the potential for the consideration of bioavailability to influence decision-making is greatest where certain chemical, environmental, and regulatory factors align. The current use of bioavailability in risk assessment and hazardous waste cleanup regulations is demystified, and acceptable tools and models for bioavailability assessment are discussed and ranked according to seven criteria. Finally, the intimate link between bioavailability and bioremediation is explored. The report concludes with suggestions for moving bioavailability forward in the regulatory arena for both soil and sediment cleanup.
Bioavailability of Contaminants in Soils and Sediments
Bioavailability of Contaminants in Soils and Sediments - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Bioavailability of Contaminants in Soils and Sediments write by National Research Council. This book was released on 2003-04-03. Bioavailability of Contaminants in Soils and Sediments available in PDF, EPUB and Kindle. Bioavailability refers to the extent to which humans and ecological receptors are exposed to contaminants in soil or sediment. The concept of bioavailability has recently piqued the interest of the hazardous waste industry as an important consideration in deciding how much waste to clean up. The rationale is that if contaminants in soil and sediment are not bioavailable, then more contaminant mass can be left in place without creating additional risk. A new NRC report notes that the potential for the consideration of bioavailability to influence decision-making is greatest where certain chemical, environmental, and regulatory factors align. The current use of bioavailability in risk assessment and hazardous waste cleanup regulations is demystified, and acceptable tools and models for bioavailability assessment are discussed and ranked according to seven criteria. Finally, the intimate link between bioavailability and bioremediation is explored. The report concludes with suggestions for moving bioavailability forward in the regulatory arena for both soil and sediment cleanup.
