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Tanji, Kenneth K.; Davis, Douglas E.; Hanson, Charles H.; Toto, A.; Higashi, Richard M.; Amrhein, C.

doi:10.1023/a:1024877630332

Cited by 39 publications

References 8 publications

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Remediation and Bioremediation of Selenium‐Contaminated Waters

et al. 2004

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Selenium (Se) is a trace element that occurs naturally in soils, water, biota, and food. It is nutritionally required, but Se in excess is toxic to aquatic‐associated wildlife such as fish and birds. Exposure to Se primarily occurs through the diet, not by direct exposure to water; therefore it is vital to account for the “biogeochemistry” of Se—the complex paths by which it moves from contaminated water up the foodweb. As a consequence, waterborne Se is an inappropriate focus for remediation, and this entry illustrates how such a focus can inadvertently misguide major remediation efforts. In fact, there is no fixed “target concentration” for remediation to achieve, as universally accepted water or tissue threshold concentrations for the protection of wildlife are likely to remain controversial for some time to come. This can stymie the traditional remediation strategies of containment, removal, or treatment. One approach to Se remediation that functions under changing regulatory limits is mitigation of wildlife impacts through “alternative” and “compensation” habitats. Also, strategies that take advantage of the natural biogeochemistry, such as algal volatilization of Se, may provide cost‐effective management of contaminated water; however, this approach must be combined with foodweb interruption to prevent Se bioaccumulation.

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Remediation and Bioremediation of Selenium‐Contaminated Waters

et al. 2004

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Integrated On‐farm Drainage Management for Drainage Water Disposal

Ayars

Soppe²

2013

Irrigation and Drainage

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Providing environmentally safe methods for disposal of drainage water containing salt and nutrients is a challenge for irrigated agriculture. A system developed for sequentially using saline drainage water for supplemental irrigation resulted in significant reduction of the drainage water volume. This system dubbed ‘integrated on‐farm drainage management’ (IFDM) was demonstrated on four 65‐ha fields located on a farm on the west side of the San Joaquin Valley of California. Three of the fields were used to grow salt‐sensitive crops (tomato, garlic) and the fourth was used to grow salt‐tolerant crops, e.g. ‘Jose’ tall wheatgrass. Subsurface drainage systems were installed on all fields at a maximum depth of 1.8 m and had controls to regulate shallow water table position and drainage flow. The total drainage flow from the site represented 0.7% of the applied water. The area used for salt‐tolerant crops was less than 6% of the total area served, compared to using evaporation ponds requiring areas equal to or greater than 10% of the served area. The results demonstrated that the regional groundwater quality masked the concentrating effect of crop water use. Deep percolation from the fields contributing to the reuse area ranged from 6 to 10% of the total applied water. Published 2013. This article is a U.S. Government work and is in the public domain in the USA.

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Reuse of Agriculture Drainage Water – Case Studies: Central Valley of California and the Nile Delta in Egypt

Eltarabily

2022

The Handbook of Environmental Chemistry

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Cited by 39 publications

References 8 publications

Remediation and Bioremediation of Selenium‐Contaminated Waters

Remediation and Bioremediation of Selenium‐Contaminated Waters

Integrated On‐farm Drainage Management for Drainage Water Disposal

Reuse of Agriculture Drainage Water – Case Studies: Central Valley of California and the Nile Delta in Egypt

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