Techno-Economic Feasibility for Water Purification from Copper Ions

Abstract

The main direction of the industrial development of Ukraine is the solving of the environmental pollution problems under the conditions of preservation of natural resources through complex use of raw materials with involvement of industrial wastes. The developed technology is intended for galvanic, accumulator, machine-building, mine and other enterprises, the wastewater from which contains ions of heavy metals. Heavy metal ions are extremely dangerous toxic substances because of a cumulative effect on aquatic organisms. In order to remove copper ions from aqueous solutions, the chemical precipitation with lime is used. The choice of reagent is associated with its cheapness. The most effective reagent precipitation of copper ions in the form of hydroxide occurs when the pH is raised to 10. In this work, the influence of sludge, which is formed as a result of water purification from copper ions, on the properties of cement was investigated. The effect was evaluated on the following properties: normal density of cement, hardening time, compressive strength at the age of 2 and 28 days and water separation coefficient. This allowed us to develop effective ways to their disposal. The developed method provides: a high degree of metal removal (up to 98-99%); simplicity of technological process; small capital and operating costs; complex technology of wastewater treatment process. Thus, the results of the study will contribute to the creation of lowwaste and non-waste technologies for waste processing and disposal.

Yard phytoarchitecture for onsite sanitation of household wastewater containing copper

“…Physical methods using membrane filtration [14], such as reverse osmosis [15] and nanofiltration [16], [17], can effectively remove copper ions from water the method is by passing water through a semipermeable membrane that retains copper ions while allowing clean water to pass through. Another method is electrowinning [18], an electrolytic process in which copper ions are reduced and deposited onto the cathode.…”

Efficient Metal Extraction from Dilute Solutions: A Review of Novel Selective Separation Methods and Their Applications

“…CP has extensive applications in metal separation and wastewater treatment. Research indicates that the hydroxide precipitation method (Equation (1) [60]) effectively removes some metals such as Cu, Zn, and Ni from wastewater within a pH range of 9-11 [61][62][63][64]. It is noteworthy that the solubility of metal hydroxides is minimal at specific pH levels, and altering the desired pH range may result in metal re-solubilization after precipitation [65,66].…”