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Trace elements sludge

Trace elements in soils and sludges (CRMs 141R-146R 597) pp 225-232 (1998k) Chlorobi-phenyls in sewage sludge (CRM 392) pp 240-243 (1998I) Trimethyl-lead in urban dust (CRM 605) pp 274-278 In Production of Certified Reference Materials for Pollutants in Environmental Matrices. European Commission Report EUR 18157 EN, CCF Academic Press, Tarbes. [Pg.47]

The enormous difference in certified values between methods and between analytes illustrates well how much care is needed in matrix/method matching. Further evidence of the importance of matrix matching is provided by an interlaboratory study on trace elements in soil reported by Maier et al. (1983) and the certification of a sewage sludge described by Maaskant et al. (1998). [Pg.240]

Possible causes of sludge bulking include (a) absence of certain necessary trace elements in wastewater (b) wide fluctuations in wastewater pH (c) limited DO in the aeration tank (d) inadequate FIM ratio (e) inadequate mean cell residence time Tc (f) inadequate return sludge pumping rate (g) internal plant overloading and (h) poor sedimentation clarifier operation. [Pg.1183]

Table 3.2. Concentrations of trace elements in soil solutions of the California soils that received sludge applications. [Pg.73]

The sulfides of trace elements in soils and sediments are also of importance in controlling the availability and mobility of trace elements, especially for land disposal of sulfide-rich sediments or anaerobic digested sludge. Due to the oxic nature in arid soils, most of the sulfur is present as sulfate thus, this problem may not be pressing. In most current SSD schedules, the majority of the sulfide forms are included in the organic bound or residual fractions. [Pg.129]

TRANSFER PROCESSES OF TRACE ELEMENTS IN SLUDGE-AMENDED ARID SOILS... [Pg.192]

Figure 7.1. Trace element concentrations in plants on California Donimo soil (pH 7.5) amended with metal sulfate-enriched sludge (Data from Mitchell et al., 1978)... Figure 7.1. Trace element concentrations in plants on California Donimo soil (pH 7.5) amended with metal sulfate-enriched sludge (Data from Mitchell et al., 1978)...
The termination of sewage biosolids applications in arid soils often results in decreases in the bioavailability of trace elements. Webber and Beauchamp (1979) found a stronger statistical relationship of Cd uptake in com to the amount of Cd added in the most recent sludge application than to... [Pg.241]

Table 8.4. Trace element composition of sewage sludge from the U.S. and Israel... Table 8.4. Trace element composition of sewage sludge from the U.S. and Israel...
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See also in sourсe #XX -- [ Pg.274 ]



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