Magnetically separable ferrite/expanded graphite wastewater treating agent as well as preparation method and application
A technology of wastewater treatment agent and expanded graphite, which is applied in separation methods, adsorption water/sewage treatment, combustible gas purification/transformation, etc. It can solve the problems of separation and recovery difficulties, and achieve the solution of small adsorption capacity, difficult recovery, distribution uniform effect
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Embodiment 1
[0025] Example 1: ZnFe 2 o 4 Wastewater treatment agent ZnFe with a mass fraction of 0.1-0.6 2 o 4 Preparation method and application of / EG complex
[0026] 1. Wastewater treatment agent ZnFe 2 o 4 Preparation of / EG complex
[0027] ⑴Weigh a certain quality of ordinary graphite, treat the ordinary graphite with concentrated sulfuric acid or concentrated nitric acid, wash with water, and dry to obtain expandable graphite; quickly put a certain amount of expandable graphite (analytical pure) into the In the muffle furnace at ℃, take it out of the furnace quickly after 10-60s, and cool naturally to get expanded graphite (EG);
[0028] (2) Weigh 1.2-1.8g EG and ultrasonically disperse it in an appropriate amount of ethanol-distilled water mixed solvent;
[0029] ⑶ According to ZnFe 2 o 4 Mass fraction (0.1~0.6) equivalent mass (0.2~1.2g), accurately weigh 0.2468~1.4808g Zn(NO 3 ) 2 ·6H 2 O and 0.6703~4.0218g Fe(NO 3 ) 3 9H 2 O, dissolved in distilled water, added ...
Embodiment 2
[0040] Example 2: CoFe 2 o 4 Wastewater treatment agent CoFe with a mass fraction of 0.1-0.6 2 o 4 Preparation method and application of / EG complex
[0041] 1. Wastewater treatment agent CoFe 2 o 4 Preparation of / EG complex
[0042] (1) Weigh a certain quality of ordinary graphite and process it according to step (1) to obtain expanded graphite;
[0043] (2) Weigh 1.2-1.8g EG and ultrasonically disperse it in an appropriate amount of ethanol-distilled water mixed solvent;
[0044] ⑶ Press and CoFe 2 o 4 Mass fraction (0.1~0.6) equivalent mass (0.2~1.2g), accurately weigh 0.2481~1.4886g Co(NO 3 ) 2 ·6H 2 O and 0.6888~4.1328g Fe(NO 3 ) 3 9H 2 O, dissolved in distilled water, added to the solution of (2), and processed according to step (3) to obtain the precursor;
[0045] ⑷The precursor is processed according to step 4 to obtain CoFe 2 o 4 CoFe with a mass fraction of 0.1 to 0.6 2 o 4 / EG waste water treatment agent.
[0046] 2. Wastewater treatment agent ...
Embodiment 3
[0055] Example 3: MnFe 2 o 4 Wastewater treatment agent MnFe with a mass fraction of 0.1-0.6 2 o 4 Preparation method and application of / EG complex
[0056] 1. Wastewater treatment agent MnFe 2 o 4 Preparation of / EG complex
[0057] (1) Weigh a certain quality of ordinary graphite and process it according to step (1) to obtain expanded graphite;
[0058](2) Weigh 1.2-1.8g EG and ultrasonically disperse it in an appropriate amount of ethanol-distilled water mixed solvent;
[0059] ⑶ According to MnFe 2 o 4 Mass fraction (0.1~0.6) equivalent mass (0.2~1.2g), accurately weigh 0.2160~1.2961g Mn(NO 3 ) 2 4H 2 O and 0.7024~4.2143g Fe(NO 3 ) 3 9H 2 O, dissolved in distilled water, added to the solution of (2), and processed according to step (3) to obtain the precursor;
[0060] ⑷The precursor is processed according to step 4 to obtain MnFe 2 o 4 MnFe with a mass fraction of 0.1 to 0.6 2 o 4 / EG waste water treatment agent.
[0061] 2. Wastewater treatment agent...
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