Efficient removal of Cu(II) and Cr(III) contaminants from aqueous solutions using marble waste powder

Guimarães, Tiago; Paquini, Lucas Destefani; Ferraz, Bruno Regis Lyrio; Profeti, Luciene Paula Roberto; Profeti, Demetrius

doi:10.1016/j.jece.2020.103972

Cited by 32 publications

(15 citation statements)

References 81 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As pH rises, Co 2+ /Mn 2+ hydrolyzes and transforms into CoOH + (MnOH + ) and Co(OH) 2 (Mn(OH) 2 ). This leads to a reduction in the adsorption of Co 2+ and Mn 2+ ions 22 …”

Section: Resultsmentioning

confidence: 99%

“…Because of the huge useable surface region, the adsorption rate of Co 2+ and Mn 2+ ions rose fast in the first stage. In the time gap between initial saturation of the adsorbent surface area and equilibrium, the rate of removal slowed 22 . The quantities of Co 2+ ions maintained in equilibrium at operational temperatures were computed as 4.80, 5.08, and 5.53 mg g −1 , respectively, as shown in Figure 2a.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Removing Co(II) and Mn(II) ions effectively from aqueous solutions by means of chemically non‐processed Mardin stone waste: Equivalent, kinetic, and thermodynamic investigations

Canpolat

2022

Env Prog and Sustain Energy

View full text Add to dashboard Cite

Mardin stone waste (MSW) was used to explore the removal of cobalt (II) and manganese (II) ions from aqueous solutions. Kinetic data collected at various temperatures were applied to different kinetic equations. Different adsorption isotherm models were evaluated to better understand the adsorption process. Energy dispersion spectroscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR) were used to analyze the surface characteristics of MSW. Results indicated that the Langmuir isotherm model, which accounts for chemical absorption and potential irreversibility of the process, may be used with the isotherm data. The adsorption of Co 2+ and Mn 2+ ions yielded kinetic data that was best characterized as pseudo-second-order with the greatest regression coefficient. While the adsorption capacity of the Co 2+ ion was determined to be 7.34, 7.75, and 8.19 mg g À1 at 298, 308, and 318 K, respectively, the adsorption capacity of Mn 2+ was calculated to be 8.20, 8.42, and 8.78 mg g À1 under the same circumstances. The adsorption of Co 2+ and Mn 2+ ions by means of MSW was natural and exothermic according to thermodynamic analyses.

show abstract

“…As pH rises, Co 2+ /Mn 2+ hydrolyzes and transforms into CoOH + (MnOH + ) and Co(OH) 2 (Mn(OH) 2 ). This leads to a reduction in the adsorption of Co 2+ and Mn 2+ ions 22 …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Removing Co(II) and Mn(II) ions effectively from aqueous solutions by means of chemically non‐processed Mardin stone waste: Equivalent, kinetic, and thermodynamic investigations

Canpolat

2022

Env Prog and Sustain Energy

View full text Add to dashboard Cite

show abstract

“…The Langmuir model is used to describe monolayer adsorption on a homogeneous surface where there is no interaction among adsorbed molecules [5]. The Langmuir isotherm is represented by Equation (11).…”

Section: Equilibrium Studymentioning

confidence: 99%

“…One of the main sources of environmental pressure in Europe is the discharge of Cu (II) mining waste into the water [2]. Given its elevated toxicity, the World Health Organization (WHO) has established a maximum Cu (II) concentration of 2 mg L −1 in waters intended for human Nanomaterials 2021, 11, 2305 2 of 17 consumption [3] and the United States Environmental Protection Agency a maximum concentration of 1.3 mg L −1 [4,5]. Solutions are urgently needed for the effective removal of heavy metals from water, including Cu (II).…”

Section: Introductionmentioning

confidence: 99%

Marble Waste Sludges as Effective Nanomaterials for Cu (II) Adsorption in Aqueous Media

et al. 2021

View full text Add to dashboard Cite

This study evaluated the waste generated by a Spanish marble-producing company as adsorbent for the removal of copper (Cu [II]) from aqueous media. Six marble waste sludge samples were studied, and the following operational parameters were analyzed in discontinuous regime, including pollutant concentration, pH, temperature, nature of aqueous medium, and ionic strength. The applicability of the adsorbent material was assessed with experiments in both continuous and discontinuous regimes under close-to-real-life conditions. A pseudo-second order model yielded a better fit to the kinetic data. Application of the intraparticle diffusion model revealed two well-differentiated adsorption stages, in which the external material transfer is negligible and intraparticle diffusion is the controlling stage. The equilibrium study was better fitted to a Freundlich-type isotherm, predicting elevated maximum adsorption values (22.7 mg g−1) at a relatively low initial Cu (II) concentration (25 ppm), yielding a highly favorable chemisorption process (n >> 1). X-ray fluorescence study identified calcite (CaCO3) as the main component of marble waste sludges. According to X-ray diffraction analysis, Cu (II) ion adsorption occurred by intercalation of the metallic cation between CaCO3 layers and by the formation of surface complexes such as CaCO3 and Cu2(CO3)(OH)2. Cu (II) was more effectively removed at medium pH, lower temperature, and lower ionic strength of the aqueous medium. The salinity and dissolved organic matter in surface, ground-, and waste-waters negatively affected the Cu (II) removal process in both continuous and discontinuous regimes by competing for active adsorption sites. These findings demonstrate the applicability and effectiveness of marble-derived waste sludges as low-cost and readily available adsorbents for the treatment of waters polluted by Cu (II) under close-to-real-life conditions.

show abstract

“…Powdered marble (PM) is an industrial by-product generated from marble processing. Due to the excessive production in many countries such as Italy, Spain, Greece, India, Turkey, China and Brazil (Demirel and Alyamaç 2018), it is estimated that around 5-6 million tons/year of marble waste is generated worldwide (Guimarães et al 2020). This waste is causing an environmental problem due to the high cost associated with its disposal (Natarajan and Murugesan 2019).…”

Section: Introductionmentioning

confidence: 99%

Box-Behnken approach for optimization of Cr(III) removal from a real tanning effluent using powdered marble

Boujelben

Ellouze

Aziz

et al. 2021

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

During the tanning step, 30-40% of trivalent chromium remains in the solid and liquid wastes, generating highly polluted sewage. In this study, powdered marble was used as a low-cost adsorbent to remove trivalent chromium from a synthetic solution and a real tanning effluent. Batch adsorption experiments on powdered marble were performed. After incubation, samples were filtered and the uptake of chromium was determined. A 3-level Box-Behnken Design was used to study the combined effect of initial chromium concentration, pH values and adsorbent dose on the removal of trivalent chromium. The results showed that the maximum uptake (> 99%) was obtained at a chromium initial concentration of 0.758 g/L, pH = 5.0 and using 6% (w:v) of powdered marble. Adsorption isotherm was satisfactorily described by Langmuir model. The toxicity of the tanning effluent was examined before and after adsorption. Phytotoxicity (Lepidium sativum) assays revealed an improvement of the germination index rising from 0 to 35% before and after adsorption, respectively. Microtoxicity (Escherichia coli) assays showed a decrease in the growth inhibition percentage going from 100 to 31% following the adsorption experiment using raw tanning effluent. Desorption study indicated that nearly 45% of the adsorbed trivalent chromium was recovered using 4% (v:v) HCl. Overall, results showed that powdered marble is an effective and an economical alternative with great potential for trivalent chromium recovery.

show abstract

Efficient removal of Cu(II) and Cr(III) contaminants from aqueous solutions using marble waste powder

Cited by 32 publications

References 81 publications

Removing Co(II) and Mn(II) ions effectively from aqueous solutions by means of chemically non‐processed Mardin stone waste: Equivalent, kinetic, and thermodynamic investigations

Removing Co(II) and Mn(II) ions effectively from aqueous solutions by means of chemically non‐processed Mardin stone waste: Equivalent, kinetic, and thermodynamic investigations

Marble Waste Sludges as Effective Nanomaterials for Cu (II) Adsorption in Aqueous Media

Box-Behnken approach for optimization of Cr(III) removal from a real tanning effluent using powdered marble

Contact Info

Product

Resources

About