Method of removing iron impurities from trivalent chromium compound
A compound, trivalent chromium technology, applied in the field of iron impurity removal, can solve the problems that have not been seen yet, the iron impurity removal effect is not good, and achieve the effect of good application prospect, good iron removal effect and low cost.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0049] Example 1
[0050] at 30g L -1 In the basic chromium sulfate solution, 15 times the theoretical amount of hydrogen peroxide is quantitatively added according to the content of iron impurities to selectively oxidize the divalent iron ions in the solution; a certain amount of sulfuric acid is added to adjust the pH of the solution to 2, Iron ion-imprinted polymer containing phosphonic acid functional group was added in an amount of 0.003 g mL -1 , after oscillating and adsorbing at 30°C for 3 hours, the solution was filtered to obtain the adsorbent after adsorption and the basic chromium sulfate solution after iron removal.
[0051] After analysis, detection and calculation, the content of iron impurities in the solution after iron removal is 0.076 mg L -1 , the removal rate of iron impurities was 97.60%.
Example Embodiment
[0052] Example 2
[0053] at 30g L -1 In the basic chromium sulfate solution, according to the content of iron impurities, 1 times the theoretical amount of hydrogen peroxide is quantitatively added to selectively oxidize the divalent iron ions in the solution; a certain amount of sulfuric acid is added to adjust the pH of the solution to 2, Iron ion-imprinted polymer containing phosphonic acid functional group was added in an amount of 0.003 g mL -1 , after oscillating and adsorbing at 30°C for 3 hours, the solution was filtered to obtain the adsorbent after adsorption and the basic chromium sulfate solution after iron removal. After removing the solvent in the solution by spray drying, the basic formula after iron removal was obtained. Chromium sulfate.
[0054] After analysis, detection and calculation, the content of iron impurities in the solution after iron removal is 0.298 mg L -1 , the removal rate of iron impurities was 90.59%.
Example Embodiment
[0055] Example 3
[0056] at 30g L -1 In the basic chromium sulfate solution, 3 times the theoretical amount of hydrogen peroxide is quantitatively added according to the content of iron impurities to selectively oxidize the divalent iron ions in the solution; a certain amount of sulfuric acid is added to adjust the pH of the solution to 2, Iron ion-imprinted polymer containing phosphonic acid functional group was added in an amount of 0.003 g mL -1 , after oscillating and adsorbing at 30°C for 3 hours, the solution was filtered to obtain the adsorbent after adsorption and the basic chromium sulfate solution after iron removal.
[0057] After analysis, detection and calculation, the content of iron impurities in the solution after iron removal is 0.198 mg L -1 , the removal rate of iron impurities was 93.75%.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap