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result sql = Destruction of trichloroethylene during hydration of calcium oxide.
Destruction of trichloroethylene during hydration of calcium oxide.
char = Q;code = 81
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char = p;code = 112
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char = o;code = 111
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char = l;code = 108
char = ;code = 32
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char = o;code = 111
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char = d;code = 100
char = i;code = 105
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char = o;code = 111
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char = r;code = 114
char = e;code = 101
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char = m;code = 109
char = e;code = 101
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char = t;code = 116
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char = T;code = 84
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char = e;code = 101
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char = e;code = 101
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char = l;code = 108
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char = a;code = 97
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char = T;code = 84
char = C;code = 67
char = E;code = 69
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char = s;code = 115
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char = e;code = 101
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char = e;code = 101
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char = f;code = 102
char = ;code = 32
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char = i;code = 105
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char = e;code = 101
char = ;code = 32
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char = a;code = 97
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char = r;code = 114
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char = e;code = 101
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char = C;code = 67
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char = ;code = 32
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char = ;code = 32
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char = ;code = 32
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char = a;code = 97
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char = (;code = 40
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char = l;code = 108
char = e;code = 101
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char = 4;code = 52
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char = o;code = 111
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char = ;code = 32
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char = h;code = 104
char = e;code = 101
char = ;code = 32
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char = a;code = 97
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char = e;code = 101
char = d;code = 100
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char = s;code = 115
char = ;code = 32
char = T;code = 84
char = C;code = 67
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result sql = Quicklime (calcium oxide, CaO) is often used as part of soil cleanup operations to remove contaminants or to create more favorable physical soil conditions for treatment. The extent to which quicklime chemically reacts with trichloroethylene (TCE) was evaluated by reacting CaO with a TCE-water mixture in test vessels designed to minimize volatilization loss. The impact of excess water and the presence of air were evaluated. During the hydration of CaO, a fraction of the spiked TCE was destroyed, and several different byproducts were detected (chloride and several organic chemicals). The primary organic byproduct was dichloroacetylene (DCA). In the presence of air, the degradation of DCA resulted in the formation of perchloroethylene (PCE), hexachloro-1,3-butadiene (HCDE), and chloroacetylene (CA). The maximum amount of TCE degradation occurred with a CaO/H(2)O ratio of 1:1 in the presence of air. The formation of DCA was hindered by the presence of excess water. In the presence of excess water (a CaO/H(2)O ratio of 1:2) the detected byproducts accounted for less than 4% of the total chlorine originally spiked as TCE.

Publication: J. Hazard. Mater. 2010 Feb 15 ;174(1-3)::876-9. :doi: 10.1016/j.jhazmat.2009.09.043.
Publication Date: 2010 Feb 15
Study Author(s): Ko, Jae Hac;Musson, Stephen;Townsend, Timothy;
Institution: Department of Environmental Engineering Sciences, University of Florida, PO Box 116450, Gainesville, FL 32611-6450, USA.
Shortcut link to this study:
Quicklime (calcium oxide, CaO) is often used as part of soil cleanup operations to remove contaminants or to create more favorable physical soil conditions for treatment. The extent to which quicklime chemically reacts with trichloroethylene (TCE) was evaluated by reacting CaO with a TCE-water mixture in test vessels designed to minimize volatilization loss. The impact of excess water and the presence of air were evaluated. During the hydration of CaO, a fraction of the spiked TCE was destroyed, and several different byproducts were detected (chloride and several organic chemicals). The primary organic byproduct was dichloroacetylene (DCA). In the presence of air, the degradation of DCA resulted in the formation of perchloroethylene (PCE), hexachloro-1,3-butadiene (HCDE), and chloroacetylene (CA). The maximum amount of TCE degradation occurred with a CaO/H(2)O ratio of 1:1 in the presence of air. The formation of DCA was hindered by the presence of excess water. In the presence of excess water (a CaO/H(2)O ratio of 1:2) the detected byproducts accounted for less than 4% of the total chlorine originally spiked as TCE.
PMID: 19800167

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