Comparative Study of Bivalent Cationic Metals Adsorption Pb(II), Cd(II), Ni(II) and Cu(II) on Olive Stones Chemically Activated Carbon

Bohli, Thouraya; Villaescusa, Isabel; Ouederni, Abdelmottaleb

doi:10.4172/2157-7048.1000158

Cited by 80 publications

(19 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Moreover, k id value of 3.2479 mg/g min 1/2 has been obtained in the adsorption of phenol using active carbon from olive stones (Bohli et al 2013). The adsorption of P-nitrophenol using active carbon fibre and granular active carbon gave similar result obtained in this study with k id values of 8.924 mg/g min 1/2 and 11.91 mg/g min 1/2 , respectively (Nwosu et al 2017).…”

Section: Pseudo-first-order and Pseudo-second-order Kinetic Modelssupporting

confidence: 80%

See 1 more Smart Citation

Adsorption of atrazine from aqueous solution using unmodified and modified bentonite clays

2018

View full text Add to dashboard Cite

Properties of raw bentonite clay of Afuze in Edo state which are abundant and cheap bentonite mineral in Nigeria as adsorbents for the removal of atrazine in aqueous solution were investigated. The bentonite clay-types were characterized using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectrophotometry and X-ray diffraction (XRD). Batch adsorption experiments were carried out to determine the equilibrium characteristics, thermodynamics and kinetics of the sorption processes. The data obtained were subjected to Langmuir, Freundlich and Temkin isotherm equations, while pseudo-first-order, pseudo-second-order rate equations, intra-particle diffusion and Elovich models were considered for kinetics and mechanism. The results showed that the adsorption processes were described by different isotherm models; they were all spontaneous (∆G ranges from − 938.34 to − 6263.58 kJ/mol) and exothermic (range of ∆H is − 252.73 to − 1057.08 kJ/mol), and with decreased randomness, ∆S (− 3.110 to − 0.581 J.mol/K). Pseudo-second-order kinetics model gave the better fit for all the sorption processes which implies physisorption process as the rate limiting step. Thus, bentonite clay-types can be used to adsorb atrazine.

show abstract

Section: Pseudo-first-order and Pseudo-second-order Kinetic Modelssupporting

confidence: 80%

“…The transfer of solute molecules on to solid surface particulates from the aqueous phase, and then, diffusion of the solute molecules into the pore interiors could be described by the intra-particle diffusion rate equation and is given as (Bohli et al 2013).…”

Section: Pseudo-first-order and Pseudo-second-order Kinetic Modelsmentioning

confidence: 99%

Adsorption of atrazine from aqueous solution using unmodified and modified bentonite clays

2018

View full text Add to dashboard Cite

show abstract

“…The bigger the ionic radius, the stronger the adsorption of the ion was since the hydration capacity of that ion is smaller, resulting in weaker binding of the ion and water phase. Also, the preference adsorption exhibited for Pb(II) over Cd(II) and Cu(II) ion may due to the difference hydrated energy as was found in the order of −1481, −1807, and −2100 kJ/mol for Pb(II), Cd(II), and Cu(II), respectively …”

Section: Resultssupporting

confidence: 69%

Chitin‐halloysite nanoclay hydrogel composite adsorbent to aqueous heavy metal ions

Nguyen

Trang

Kobayashi

2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

Halloysite nanoclay (HNC) was mixed with Chitin hydrogel film by phase inversion in water vapor atmosphere at room temperature. In the preparation, Chitin was dissolved in N,N‐dimethyl acetamine/lithium chloride (DMAc/LiCl) and different amounts of HCN was dispersed well for the gelation process. The resultant Chitin‐Halloysite nanoclay (CTH) hydrogel films containing HCN at 0, 0.1, 0.5, 1, and 4 wt % were used for the adsorbents of heavy metal ions. As the results, the tensile strength of the hydrogel composite was enhanced from 0.34 to 0.71 N/mm2 while the elongation decreased from 66.43% to 49.93% with the increment of HNC concentration from 0 to 4 wt %. A reduction in the water content and the increment in the modulus confirmed the formation of highly dispersed nano‐composites with improved interfacial interactions between nano‐fillers and matrix. In the adsorption experiments of the ternary ion of Pb2+, Cu2+, and Cd2+, the removal capacity of Pb(II) was highly retained by the CTH hydrogel film relative to Cd(II) and Cu(II), shown Langmuir model with the maximum binding amount on the hydrogel composites were followed as order Pb (8.2 mg/g), Cu (4.2 mg/g), and Cd (2.1 mg/g). © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47207.

show abstract

“…In other words, Cu(II), Mn(II), Ni(II) and Zn(II) ions are more mobile in the bulk solution, and both activated and raw fly ash samples show less tendency to adsorb them (Bohli et al . ).…”

Section: Resultsmentioning

confidence: 97%

Comparison of multiple regression analysis using dummy variables and a NARX network model: an example of a heavy metal adsorption process

Bingöl

Xiyili

Elevli

et al. 2017

Water & Environment J

View full text Add to dashboard Cite

In the present study, the adsorption characteristics of coal fly ash obtained from the Kangal Power Plant, Turkey and activated fly ash in the planetary ball mill were investigated to remove the heavy metal ions from aqueous solutions. The adsorption capacity was compared for the first time using a multiple regression analysis with dummy variables and a non‐linear auto regressive exogenous (NARX) network model. An equation was obtained for all types of adsorbents or heavy metals using the regression of qe on the dummy variables. The predictive ability of NARX was found to be better than that of multiple regression using dummy variables. These models can also be successfully implemented on the experimental data to evaluate the adsorption process. In addition, fly ash is a low cost alternative since it is a more economical and environmentally friendly adsorbent and it is abundant in both nature and from waste material from industry.

show abstract

Comparative Study of Bivalent Cationic Metals Adsorption Pb(II), Cd(II), Ni(II) and Cu(II) on Olive Stones Chemically Activated Carbon

Cited by 80 publications

References 19 publications

Adsorption of atrazine from aqueous solution using unmodified and modified bentonite clays

Adsorption of atrazine from aqueous solution using unmodified and modified bentonite clays

Chitin‐halloysite nanoclay hydrogel composite adsorbent to aqueous heavy metal ions

Comparison of multiple regression analysis using dummy variables and a NARX network model: an example of a heavy metal adsorption process

Contact Info

Product

Resources

About