Tobermorite/ HAP composite sewage heavy-metal treating material and preparation method thereof
A tobermorite and heavy metal technology is applied in the field of tobermorite/HAP composite sewage heavy metal treatment material and its preparation, which can solve problems such as difficulty in sludge disposal and excess metal concentration, and achieve good application prospects and production costs. The effect of low, strong adsorption capacity
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Embodiment 1
[0027] 1) Design the composite ratio of tobermorite and HAP according to the molar ratio of 7:3; determine the molar amount n1(Si) of Si in tobermorite according to the molar ratio of n1(Ca) / n1(Si)=5 / 6 , and then determine the molar mass n1(Ca) of Ca in tobermanite; then determine the molar mass n2(P) of P in HAP according to the molar ratio of n2(Ca) / n2(P)=1.67, and then determine the molar mass n2(P) of HAP The molar weight n2(Ca) of Ca in the middle; Finally determine the total molar weight n(Ca) of Ca by n(Ca)=n1(Ca)+n2(Ca);
[0028] 2) According to the ratio of the molar amount n1(Si) of Si in tobermorite, the molar amount n2(P) of P in HAP and the total molar amount n(Ca) of Ca determined in step 1), weigh the analytically pure Ca respectively. (OH) 2 , Analytical pure Na 2 SiO 3 9H2 O and measure the phosphoric acid aqueous solution acid that the concentration that prepares is 0.5mol / L; The analysis pure Ca(OH) 2 and analytically pure Na 2 SiO 3 9H 2 O is fully m...
Embodiment 2
[0034] 1) Design the composite ratio of tobermorite and HAP according to the molar ratio of 8:2, and determine the molar amount n1(Si) of Si in tobermorite according to the molar ratio of n1(Ca) / n1(Si)=5 / 6 , and then determine the molar mass n1(Ca) of Ca in tobermanite; then determine the molar mass n2(P) of P in HAP according to the molar ratio of n2(Ca) / n2(P)=1.67, and then determine the molar mass n2(P) of HAP The molar weight n2(Ca) of Ca in the middle; Finally determine the total molar weight n(Ca) of Ca by n(Ca)=n1(Ca)+n2(Ca);
[0035] 2) According to the ratio of the molar amount n1(Si) of Si in tobermorite, the molar amount n2(P) of P in HAP and the total molar amount n(Ca) of Ca determined in step 1), weigh the analytically pure Ca respectively. (OH) 2 , Analytical pure Na 2 SiO 3 9H 2 O and measure the phosphoric acid aqueous solution acid that the concentration that prepares is 0.5mol / L; The analysis pure Ca(OH) 2 and analytically pure Na 2 SiO 3 9H 2 O is f...
Embodiment 3
[0038] 1) Design the composite ratio of tobermorite and HAP according to the molar ratio of 9:1, and determine the molar amount n1(Si) of Si in the tobermorite according to the molar ratio of n1(Ca) / n1(Si)=5 / 6 , and then determine the molar mass n1(Ca) of Ca in tobermanite; then determine the molar mass n2(P) of P in HAP according to the molar ratio of n2(Ca) / n2(P)=1.67, and then determine the molar mass n2(P) of HAP The molar weight n2(Ca) of Ca in the middle; Finally determine the total molar weight n(Ca) of Ca by n(Ca)=n1(Ca)+n2(Ca);
[0039] 2) According to the ratio of the molar amount n1(Si) of Si in tobermorite, the molar amount n2(P) of P in HAP and the total molar amount n(Ca) of Ca determined in step 1), weigh the analytically pure Ca respectively. (OH) 2 , Analytical pure Na 2 SiO 3 9H 2 O and measure the phosphoric acid aqueous solution acid that the concentration that prepares is 0.5mol / L; The analysis pure Ca(OH) 2 and analytically pure Na 2 SiO 3 9H 2 O ...
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