Removal of Cobalt (II) from Waters Contaminated by the Biomass of Eichhornia crassipes

Abstract

Due to the increase in contamination of aquatic niches by different heavy metals, different technologies have been studied to eliminate these pollutants from contaminated aquatic sources. So the objective of this work was to determine the removal of cobalt (II) in aqueous solution by the biomass of the aquatic lily or water hyacinth (Eichhornia crassipes) which, is one of the main weeds present in fresh water, due to its rapid reproduction, growth, and high competitiveness, by the colorimetric method of the methyl isobutyl ketone. The removal was evaluated at different pHs (4.0–8.0) for 28 h. The effect of temperature in the range from 20 °C to 50 °C and the removal at different initial concentrations of cobalt (II) of 100 to 500 mg/L was also studied. The highest bioadsorption (100 mg/L) was at 28 h, at pH 5.0 and 28 °C, with a removal capacity of 73.1%, which is like some reports in the literature. Regarding the temperature, the highest removal was at 50 °C, at 28 h, with a removal of 89%. At the metal and biomass concentrations analyzed, its removal was 82% with 400–500 mg/L, and 100% with 5 g of natural biomass at 20 h. In addition, this completely removes the metal in situ (100 mg/L in contaminated water, at 7 days of incubation, with 10 g of natural biomass in 100 mL). So, the natural biomass can be used to remove it from industrial wastewater, even if in vivo, only eliminate 17.3% in 4 weeks.

Selective Recovery of Cadmium, Cobalt, and Nickel from Spent Ni–Cd Batteries Using Adogen® 464 and Mesoporous Silica Derivatives

“…Negative ∆ G ° values show that the suggested extraction contrivance is spontaneous and feasible. The Arrhenius relation is important as the straight-line slope in Figure 2 f is applicable for assessing the apparent activation energy ( E a ) of cadmium ions extraction at different temperatures [ 46 ]. Values are calculated from the following Equation (5) [ 47 ].…”

“…Positive values of Δ S ° indicate that there is a strong affinity between PTU-MSA and Co 2+ ions. Furthermore, a decline in negative Δ G ° quantities with increasing temperature demonstrates that sorption processes are more effective at more elevated temperatures, most likely because ions are more mobile in the solution [ 46 ].…”

Invasive plants as biosorbents for environmental remediation: a review

“…Although these materials are quite efficient, they necessitate so further preparations, chemicals, time, and energy that they are relatively not suitable for large-scale applications. Conversely, raw biomass-waste materials are gained attention due to their simple preparation, low cost, eco-friendly, and biodegradable characteristics (Shooto 2020;Acosta-Rodríguez et al 2021).…”

Application of Extraction and Determination Based on Deep Eutectic Solvents in Different Types of Environmental Samples

“…New pollutants continue to appear with the development of society, many of which cannot be decomposed in natural water as a source of drinking water [1]. The pollution process of these pollutants in water sources is slow and hidden.…”