Research on Metal Ion Removal of Ceramic Printing Wastewater

Abstract

The removal of the metal ions in the ceramic printing wastewater was influenced by using, stirring and precipitating of the solution pH, coagulant PAC, coagulant aid PAM and heavy metal scavenger. This experiment investigated the removal effect of the metal ions in the wastewater under different conditions. Flame atomic absorption spectrometry was adopted for the determination of the concentration of metal ions in the wastewater. The studies have shown that alkalization, PAC coagulation treatment have a role in the removal of metal ions in the ceramic printing wastewater. And the chromium and iron removal rate can reached 74.0% and 61.6% respectively. Heavy metal scavenger also have a better role in the removal of metal ions. And the chromium and iron removal rates were 82.3% and 76.2% respectively without dosing PAC. The number of reaction cell has no significant effect on the removal of metal ions.

Recent Advancement of Coagulation–Flocculation and Its Application in Wastewater Treatment

“…The inability to remove metal ions by the coagulation− flocculation process alone was also reported by Shang et al 163 The application of PAC as a coagulant and PAM as a flocculant to treat ceramic printing wastewater removed 71 and 47.7% of chromium and iron content, respectively. However, these removals were found to be insufficient as the levels of metal ions contaminant were still at 4 and 6 mg/L for chromium and iron, respectively.…”

A linear free-energy relationship for the prediction of metal ion complexing properties in hybrid carbon-based scavengers

“…The presence of heavy metals in our environment, as a consequence of daily life activities and industrial processes, has led to the need for developing highly efficient metal ion scavengers for industrial effluent treatment and drinking water purification, mainly with two objectives, environmental preservation and recovery of metal ions of economic interest. [1][2][3][4][5][6] Consequently, many diverse procedures have been proposed to remove metal ions from water and wastewater, including the development of new cost-effective and highly selective metal ion scavengers, although the design of innovative metal ion analysis methodologies continues to be a great challenge. [7][8][9][10][11][12] In the last few decades, activated carbons (ACs) have been extensively used as adsorbents to remove metals from industrial and municipal wastewater, as they are cheap and accessible materials, especially suitable for large scale applications.…”