Treatment agent for degrading chemical substance containing persulfate and silver complex, and method for degrading chemical substance using same
A technology of chemical substances and persulfates, applied in organic chemistry, silver organic compounds, oxidized water/sewage treatment, etc., can solve problems such as difficult to degrade metal cyanide complexes, and achieve safe and effective degradation effects
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Embodiment 1
[0075] Dissolve potassium hexacyanoferrate (a special grade reagent manufactured by Kozong Chemical Co., Ltd.) in pure water to prepare simulated polluted water with a concentration of 10 mgCN / L. 2,2'-bipyridine (a special grade reagent manufactured by Wako Pure Chemical Industries, Ltd.) as a complexing agent was dissolved in an aqueous sulfuric acid solution to prepare a 0.16 wt% sulfuric acid acidic 2,2'-bipyridine aqueous solution. Silver nitrate (a special grade reagent manufactured by Kozong Chemical Co., Ltd.) as a silver compound was dissolved in pure water to prepare a silver nitrate aqueous solution, and the above-mentioned sulfuric acid acidic 2,2'-bipyridine aqueous solution was mixed to prepare silver as a silver complex -2,2'-Bipyridine complex aqueous solution. Put 50.0 g of simulated polluted water into a glass sample tube, 1.36 g of sodium acetate trihydrate (special grade reagent manufactured by Kozong Chemical Co., Ltd.) as a pH adjuster, and sodium persulfat...
Embodiment 2~4
[0088] As the complexing agent, 2-aminomethylpyridine (reagent manufactured by Tokyo Chemical Industry Co., Ltd.), ethylenediamine (special grade reagent manufactured by Wako Pure Chemical Industries, Ltd.), or tetramethylethylenediamine (Sigma-AldrichCo. Reagent manufactured by LLC.), except that 2,2'-bipyridine was replaced, the experiment was performed in the same manner as in Example 1. The results are shown in Table 1.
Embodiment 5~7
[0102] As a pH adjuster, use trisodium citrate dihydrate (special grade reagent manufactured by Kozon Chemical Co., Ltd.), disodium phosphate dihydrate or sodium bicarbonate (special grade reagent manufactured by Kozon Chemical Co., Ltd.) instead of acetic acid Sodium trihydrate was tested in the same manner as in Example 1, except that the standing time was 2 days, 6 days, or 4 days. The results are shown in Table 3.
[0103] [table 3]
[0104]
[0105] As shown in Table 3, acetic acid, citric acid, phosphoric acid, and carbonic acid buffers can be used as pH adjusting agents in the degradation method of the present invention. In particular, in Example 1 in which sodium acetate was used as the pH adjuster and Example 7 in which sodium bicarbonate was used as the pH adjuster, the degradation effect of cyanide was higher.
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Abstract
Description
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Application Information
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