Comparison of adsorption properties for cadmium removal from aqueous solution by Enteromorpha prolifera biochar modified with different chemical reagents

Li, Xiangping; Wang, Chuanbin; Tian, Jingnan; Liu, Juping; Chen, Guanyi

doi:10.1016/j.envres.2020.109502

Cited by 55 publications

(16 citation statements)

References 41 publications

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“…So, adsorption is monolayer and surface is not covered completely by cadmium 61 . For the adsorption of Cd 2+ from aqueous systems by SDS modified mesoporous silica MCM‐41, 62 adsorption of cadmium from aqueous solution using Enteromorpha prolifera biochar modified with different chemical reagents 63 and cadmium adsorption using guanine‐functionalized mesoporous silica [SBA‐16‐g], 56 Langmuir isotherm was the predominant isotherm model between other isotherm models. The Freundlich isotherm assumes multilayer adsorption on the heterogeneous surface of adsorbent.…”

Section: Resultsmentioning

confidence: 99%

“…Boundary layer effects increase with the increase of the Cd +2 initial concentration. So, adsorption kinetic is controlled by film and pore diffusion combination 63,69 . The values of k p and C from intra‐particle model were calculated and listed in Table 4.…”

Section: Resultsmentioning

confidence: 99%

“…62 The value of E calculated by D-R model is higher than 8 kJ/mol (8.99 kJ/mol) representative of the chemisorption of cadmium on NH 2 /SBA-15/NTAA. 6,64 The results of some researches for Cd(II) adsorption on E. prolifera biochar modified with different chemical reagents 63 and cadmium uptake on polyacrylic acid-based and chitosan-based hydrogels 65 proved that the chemical adsorption is the controlling step for the cadmium adsorption process.…”

Section: Effect Of Temperature and Thermodynamic Studymentioning

confidence: 99%

See 2 more Smart Citations

Cadmium cation uptake through amine and acid post‐functionalized Santa Barbara Amorphous materials; comprehensive adsorption studies

Binaeian

Esfandyari

Valipour

et al. 2020

Env Prog and Sustain Energy

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In this research, a novel adsorbent, nitrilotriacetic acid anhydride (NTAA) and 3‐aminopropyltriethoxysilane (APTES) modified Santa Barbara Amorphous materials (SBA‐15) as a mesoporous silica was synthesized and applied for the adsorption of cadmium solution. X‐ray diffraction, transmission electron microscopy, scanning electron microscopy, nitrogen adsorption–desorption isotherms and Fourier transform infrared analysis were used. The adsorption experiments were performed during batch system containing different concentrations of cadmium solution (60–120 mg/L) in pH range of 2–10, adsorbent dosage of 100–600 mg/L with contact time interval of 15–120 min. The maximum cadmium removal was achieved at pH 6 with 250 mg/L of adsorbent after 60 min. The proposed mechanisms for the removal and capture of Cd+2 ions by adsorbent are electrostatic interactions and chelation. The equilibrium studies prove that the experimental data are compatible with the Langmuir isotherm model well with the maximum adsorption capacity of 500 mg/g. Kinetic and thermodynamic studies also indicate that pseudo‐second order kinetic model is the predominant model and the adsorption process is exothermic. This study reveals a high capability of novel nano‐adsorbent for the efficient removal of hazardous heavy metal cations and anions from wastewater.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Effect Of Temperature and Thermodynamic Studymentioning

confidence: 99%

See 1 more Smart Citation

Cadmium cation uptake through amine and acid post‐functionalized Santa Barbara Amorphous materials; comprehensive adsorption studies

Binaeian

Esfandyari

Valipour

et al. 2020

Env Prog and Sustain Energy

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show abstract

“…Contamination of ground and surface water by toxic metal has become an emerging concern over the last few decades due to their toxicity, persistence and bioaccumulative nature [65][66][67][68][69].Studies has shown the high contamination level in aquatic fish which can not only effect the species population but also can be subjected to other living organism which consume it [70][71][72][73][74]. Thus, efforts on its removal has been initiated with adsorption as one of the novel low-cost technique in day to day [75][76][77] increasing solution pH with maximum uptake at pH range 4-6. Their study also suggests that at pH 1-2, the adsorption of Cu(II) was almost constant with removal efficiency of 30% attributing to the presence of high levels of H + ions.…”

Section: Heavy Metalsmentioning

confidence: 99%

Application of the Principal Component Analysis (PCA) to aerobic biodegradation process

Raffa

Vergnano

Chiampo

et al. 2021

International Journal of Chemical and Environmental Sciences

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“…In the second one, there would be the process of diffusion of Lead and Nickel through the pores of the adsorbent material, so that the process would take place in multiple internal active sites until saturation is reached, promoting the formation of complexes. Likewise, as the graph cuts the origin, it can be said that the mechanisms that dominate the removal process are intraparticle diffusion and chemical and physical adsorption [52].…”

Section: Modelling Of Adsorption Kineticsmentioning

confidence: 99%

Adsorption in a binary system of Pb (II) and Ni (II) using lemon peels

Tovar

Sierra-Ardila

Meza-Acuña

et al. 2020

Rev.Fac.Ing.Univ.Antioquia

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The elimination of pollutants in water sources is a widely studied issue with the purpose of preserving the environment. In this work, the use of lemon peel (citrus lemon) as a bio-sorbent in the removal of Pb (II) and Ni (II) is studied, varying the temperature, adsorbent dose, and particle size. The materials were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS) analysis, to determine the bio adsorbent’s physicochemical properties. FTIR and EDS techniques confirmed the precipitation of ions on the adsorbent after the adsorption process. It was found that the optimal conditions according to the Response Surface Methodology (RSM) are: particle size for Ni (II) of 1 and 0.355 mm, adsorbent dose 0.077 g and 0.117 g, and temperatures of 34 and 45 ºC, for Pb (II) and Ni (II), respectively. The results reported that the Dubinin-Radushkevich isotherm and the pseudo-second-order model are more in line with the experimental data, suggesting that the adsorption process is driven by physisorption and occurs in multilayers. Thermodynamic parameters suggest that the process is exothermic for Ni (II) and endothermic for Pb (II), and irreversible. The binary study showed that there is no competition for active sites between the ions.

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Comparison of adsorption properties for cadmium removal from aqueous solution by Enteromorpha prolifera biochar modified with different chemical reagents

Cited by 55 publications

References 41 publications

Cadmium cation uptake through amine and acid post‐functionalized Santa Barbara Amorphous materials; comprehensive adsorption studies

Cadmium cation uptake through amine and acid post‐functionalized Santa Barbara Amorphous materials; comprehensive adsorption studies

Application of the Principal Component Analysis (PCA) to aerobic biodegradation process

Adsorption in a binary system of Pb (II) and Ni (II) using lemon peels

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