Removal of copper by adsorption on treated laterite

Rani, K. Sudha; Srinivas, B.; GouruNaidu, K.; Ramesh, K.

doi:10.1016/j.matpr.2017.11.106

Cited by 44 publications

(9 citation statements)

References 12 publications

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“…The adsorption process is the most used technique due to its efficiency and simplicity [6][7][8]. Several adsorbents have been tested in order to remove copper ion, such as activated carbon [8][9][10], clays [11], apatite [12], composite carbon-silica [13], magnetic materials [14][15][16], silica gel [17], hydroxyapatite [18], zeolites [19] and fly ash [5,20]. Over time, fly ash has been investigated by many researchers as an adsorbent for heavy metal removal [21,22].…”

Section: Introductionmentioning

confidence: 99%

Removal of Toxic Copper Ion from Aqueous Media by Adsorption on Fly Ash-Derived Zeolites: Kinetic and Equilibrium Studies

2021

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This study investigated the adsorption capacity of one material based on the treatment of fly ash with sodium hydroxide as a novel adsorbent for toxic Cu2+ ion removal from aqueous media. The adsorbent was obtained through direct activation of fly ash with 2M NaOH at 90 °C and 6 h of contact time. The adsorbent was characterized by recognized techniques for solid samples. The influence of adsorption parameters such as adsorbent dose, copper initial concentration and contact time was analyzed in order to establish the best adsorption conditions. The results revealed that the Langmuir model fitted with the copper adsorption data. The maximum copper adsorption capacity was 53.5 mg/g. The adsorption process followed the pseudo-second-order kinetic model. The results indicated that the mechanism of adsorption was chemisorption. The results also showed the copper ion removal efficiencies of the synthesized adsorbents. The proposed procedure is an innovative and economical method, which can be used for toxicity reduction by capitalizing on abundant solid waste and treatment wastewater.

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Section: Introductionmentioning

confidence: 99%

Removal of Toxic Copper Ion from Aqueous Media by Adsorption on Fly Ash-Derived Zeolites: Kinetic and Equilibrium Studies

2021

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“…In recent years, the soil and water pollution by different contaminants is a serious threat to the environment. Among these pollutants, there are heavy metal ions, such as copper ions, which are released from various industries including mining, electroplating, extracting, and pigments. , Heavy-metals ions are not biodegradable. Copper ions is an indispensable element for the health of the human body; however, it is toxic at high uptakes and may cause serious problems to humans, such as memory loss, kidney and liver damage, schizophrenia, and hypertension …”

Section: Introductionmentioning

confidence: 99%

Nanoporous Carbon Derived from MOF-5: A Superadsorbent for Copper Ions

Bakhtiari

Azizian

2018

ACS Omega

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In this work, nanoporous carbon (NPC) was synthesized by direct carbonization of MOF-5 (a famous metal–organic framework). The structure and morphology of the prepared MOF-derived nanoporous carbon (MOF-NPC) were investigated by X-ray diffraction, N 2 adsorption/desorption isotherm, Raman spectroscopy, thermogravimetric analysis, and scanning electron microscopy methods. The MOF-NPC was then used to adsorb copper ions from aqueous solutions. To evaluate the performance of the prepared MOF-NPC to remove copper ions, both adsorption kinetics and adsorption equilibrium experiments were carried out and then the obtained data were modeled with various models. Also, the efficacy of temperature and the pH of the solution on the removal efficiency were checked. The results show that the prepared MOF-NPC is a superadsorbent for the removal of copper ions from aqueous solutions. Finally, the removal percentage of copper ions by the prepared MOF-NPC was compared with other activated carbon adsorbents to show its incredible efficiency.

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“…The maximum adsorption capacity (qm) calculated from this model was similar to the experimental one (18 mg/g). Additionally, the dimensionless Langmuir separation factor (RL) of 0.03 indicated a favorable adsorption process (Deihimi et al 2018;Sudha Rani et al 2018). Table 2 exhibits a comparative of the maximum adsorption capacities of different bioadsorbents for copper adsorption.…”

Section: Equilibrium Isothermsmentioning

confidence: 99%

“…All of these effects contribute to the necessity of treating copper-containing wastewater (Feng et al 2009). The U. S. Environmental Protection Agency (EPA) has set a guidance level for copper in drinking water at 1.3 mg/L (Sudha Rani et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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

Alcaraz

García‐Díaz

López

2019

BioRes

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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.

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Removal of copper by adsorption on treated laterite

Cited by 44 publications

References 12 publications

Removal of Toxic Copper Ion from Aqueous Media by Adsorption on Fly Ash-Derived Zeolites: Kinetic and Equilibrium Studies

Removal of Toxic Copper Ion from Aqueous Media by Adsorption on Fly Ash-Derived Zeolites: Kinetic and Equilibrium Studies

Nanoporous Carbon Derived from MOF-5: A Superadsorbent for Copper Ions

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

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