Optimization and assessment of Fe–electrocoagulation for the removal of potentially toxic metals from real smelting wastewater

Citric Acid Modified Bentonite for Congo Red Adsorption

“…However, the effluents discharged by these industries contain untreated dyes which can be toxic to human beings and aquatic life and hence their removal from contaminated wastewater is essential. Various methods such as adsorption over activated carbon (Wen et al, 2016), thermolysis, and coagulation (Yen et al, 2017), membrane separation (Cazzorla et al, 2018;Ye et al, 2018), electrochemical decolorization (Xu L. et al, 2018), photocatalytic degradation (Liu et al, 2019), and biological treatment (Banihani et al, 2018) have been widely reported for the removal of organic pollutants. Among these methods, adsorption over activated carbon is envisaged as highly effective technique.…”

High-purity recycling of hematite and Zn/Cu mixture from waste smelting slag

“…Thus, the strong acid leaching method needs to be modified to effectively recycle heavy metals without generating hazardous waste. Studies have revealed that the impurities in slag are mainly introduced by the addition of flocculants, such as polyaluminum chloride, polyferric sulfate, polysilicic acid and polyacrylamide, during smelting wastewater treatment [13][14][15] . Therefore, we hypothesized that in smelting wastewater treatment, the use of a single flocculant might effectively reduce impurities in the leaching acid and eliminate the undissolved solid.…”

Erratum: Selenium removal from petroleum refinery wastewater using an electrocoagulation technique

“…But needs some clarification mentioned in some of the calculated values as an erratum in Tables 3 and 4. It was better to show that how energy consumption has been determined in the text (Xu et al, 2018;Emamjomeh, 2017). Although it is clear that methodology of calculation of the energy consumption is T based on the energy rate and the removed selenium concentration.…”