Removal of copper ions from wastewater by adsorption onto a green adsorbent from winemaking wastes

Abstract

Copper ion adsorption was studied using an activated carbon from winemaking wastes. The pH, temperature, activated carbon amount, and initial copper concentration were varied based on a full factorial 2k experimental design. Kinetic and thermodynamic studies were also performed. The adsorption kinetics followed a pseudo-second-order model. The adsorption data fit best to the Langmuir isotherm, compared with the Freundlich and Temkin models. The analysis of variance demonstrated that the pH and the activated carbon dosage had the greatest influences on the copper adsorption. The obtained activation energy suggested that the copper adsorption was physisorption. The best fit to a linear correlation was the moving boundary equation, which controls the kinetics of the adsorption of copper ions onto the activated carbon. X-ray photoelectron spectroscopy revealed the existence of different copper species (Cu2+, and Cu+ and/or Cu0) on the surface of the carbonaceous adsorbent after the adsorption, which could suggest a simultaneous reduction process.

Two step synthesis and application of porous carbon for removal of copper (II) from wastewater: Statistical optimization and equilibrium isotherm analysis

“…Copper is mainly used for manufacturing semiconductors, electronic devices, and electro-plating processes. Longterm exposure to copper through polluted water can lead to diarrhea, nausea, and kidney and liver failures (Alcaraz et al 2020;Mulungulungu et al 2021). According to the EPA, USA, in drinking water, the copper level should not exceed to 1300 µ/L.…”

Effects of Cupric Ion Adsorption onto the Modified Pineapple Pulp as a Biochar Adsorbent

“…The enzyme synthesis, tissues and bone development of humans need to use copper smallest. Vomiting headache, nausea, problems of respiratory, abdominal pain, failures of kidney and liver and gastrointestinal bleeding finally will be affected due to accumulating a lot of cupric ions in a liver overconsumption [4][5][6]. Copper sulfate pentahydrate usually in swimming pools for thallophytic plant protection is to be at 250 g in water volume of 50 m 3 and drained in the environment.…”