Chemical properties of different composts consisting of sewage sludge, cement kiln dust and plant residues

2001 ◽  
pp. 990-991
Author(s):  
A. Zayed ◽  
S. Mabrouk ◽  
M. Abdou
Keyword(s):  
Sewage Sludge ◽  
Chemical Properties ◽  
Cement Kiln Dust ◽  
Plant Residues ◽  
Cement Kiln ◽  
Kiln Dust

Limed sewage sludge effects on nutrient status and metal fractions in acidic soils

1999 ◽  
Vol 79 (1) ◽  
pp. 173-182 ◽  
Author(s):  
R. R. Simard ◽  
S. Beauchemin ◽  
M. R. Laverdière
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Water Soluble ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Acidic Soils ◽  
Mn Toxicity ◽  
Extractable P ◽  
The Impact ◽  
Kiln Dust

The potential impacts of limed sludge on nutrient and heavy metal bioavailability must be studied for their safe use on acidic soils. The objective of this study was to assess the impact of limed sludges on six acidic soils from eastern Canada. CaCO3 and raw sewage sludges (RSS) stabilized with either CaO (CaO + S) or cement kiln dust (CKD + S) were added to soils in amount necessary to reach pH 6.5 and the mixtures were then incubated for 64 d. CaO + S treatments were the most efficient to neutralize soil acidity. After 10 d of incubation, the Sr-citrate extractable P was significantly increased by the CaO + S treatment in low P sorption soils. The extractable K, Zn and Cu contents were also slightly increased by CaO + S compared to CaCO3 whereas CKD + S resulted in an excessive soil exchangeable K content. After 64 d, labile Al content was decreased by all liming amendments. RSS and CaO + S tended to increase labile Cu and Mn contents. The RSS increased NaOH-extractable Cu but the treatments had no significant effects on the labile and stable forms of heavy metals. A combination of CaO + CKD to stabilize sewage sludge would be more suitable to provide appropriate levels of P and K without resulting in large increases in extractable heavy metal contents. Key words: pH, extractable P and K, cement kiln dust, Al and Mn toxicity, Cu fractions, water-soluble metals

Selenium in Swiss chard grown on sewage sludge-cement kiln dust amended soil

Chemosphere ◽  
1993 ◽  
Vol 27 (8) ◽  
pp. 1461-1463 ◽  
Author(s):  
Walter H. Gutenmann ◽  
G.James Doss ◽  
Donald J. Lisk
Keyword(s):  
Sewage Sludge ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Swiss Chard ◽  
Kiln Dust ◽  
Amended Soil
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