Removal of Pb(II) ions from aqueous solution by adsorption using bael leaves (Aegle marmelos)

Chakravarty, Sanchita; Mohanty, Ashok; Sudha, T. Nag; Upadhyay, A. K.; Konar, J; Sircar, J. K.; Madhukar, Anuradha; Gupta, Kalyan Kali Sen

doi:10.1016/j.jhazmat.2009.08.113

Cited by 188 publications

(90 citation statements)

References 28 publications

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“…Peaks below 1000 cm À1 have been attributed to such groups as aromatic CAH bending vibrations (874 cm À1 ), thioesters (672 cm À1 ), but majorly plane deformations. Similar observations have been reported by Yan et al [4], Pehlivan et al [6], Chakravarty et al [27] and Yao et al [28].…”

Section: Fourier Transform Infrared (Ft-ir) Spectroscopysupporting

confidence: 89%

“…1). These shifts may be attributed to the counter ions changes associated with the respective functional groups anions when they act as proton donors, suggesting their participation in Pb 2+ ion adsorption [4,6,27]. No marked change in frequency was observed between both spectra in the region just below 3000 cm À1 (hydroxyl functional groups).…”

Section: Fourier Transform Infrared (Ft-ir) Spectroscopymentioning

confidence: 93%

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Mechanism of Pb2+ removal from aqueous solution using a nonliving moss biomass

Olu-Owolabi

Diagboya

Ebaddan

2012

Chemical Engineering Journal

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. a b s t r a c tBiosorption of lead (II) ions onto raw biomass of the moss plant Barbula lambarenensis has been studied using the batch equilibrium adsorption method. Equilibrium isotherms, kinetics and thermodynamic parameters have been evaluated. The FT-IR analysis showed that likely functional groups responsible for the adsorption are carboxyl, carbonyl, amides and hydroxyl groups. The pH for optimum adsorption is 5.0. Equilibrium data fit well to the Langmuir isotherm. The estimated maximum adsorption capacity was found to be 62.50 mg/g at 298 K and 90.91 mg/g at 323 K. The kinetic data obeyed the pseudo-second-order model. The free energy changes (DG o ) are positive and the reaction is exothermic with decreased randomness at the sorbent/solution interface. Taking into account its good adsorption capacity, ease of sample treatment, as well as availability, the biomass of B. lambarenensis is a promising cost-effective biosorbent for Pb 2+ removal from aqueous environment.

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Section: Fourier Transform Infrared (Ft-ir) Spectroscopysupporting

confidence: 89%

Section: Fourier Transform Infrared (Ft-ir) Spectroscopymentioning

confidence: 93%

Mechanism of Pb2+ removal from aqueous solution using a nonliving moss biomass

Olu-Owolabi

Diagboya

Ebaddan

2012

Chemical Engineering Journal

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“…The adsorption was exothermic at ambient temperature. Also, neem leaves for the adsorption of Cu Chakravarty et al (2010). The maximum capacity of the bael leaves was 104 mg/g at 50 mg/L initial Pb 2?…”

Section: Sawdustmentioning

confidence: 99%

Applications on agricultural and forest waste adsorbents for the removal of lead (II) from contaminated waters

Saka

Şahi̇n

Küçük

2012

Int. J. Environ. Sci. Technol.

135

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At present, there is growing interest in using low cost, commercially available materials for the adsorption of heavy metals. The major advantages of adsorption technologies are its effectiveness in reducing the concentration of heavy metal ions to very low levels and the use of inexpensive adsorbent materials. In this review, agricultural and forest waste adsorbents were used to remove Pb 2? ions in wastewater treatment, and their technical feasibilities were reviewed in studies mainly from 2000 to 2010. They all were compared with each other by metal binding capacities, metal removal performances, sorbent dose, optimum pH, temperature, initial concentration and contact time. Although commercial activated carbon is widely used in wastewater treatment applications, it has high costs. The use of agricultural by-products as adsorbent material to purify heavy metal contaminated water has become increasingly popular through the past decade because they are less expensive, biodegradable, abundant and efficient. Instead of activated carbon, this study was focused on the inexpensive materials such as agricultural and forest waste. It was shown that these alternative adsorbents had sufficient binding capacity to remove Pb 2? ions from wastewater.

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“…Using the above same method, the activation energies on various adsorptions 33-38 were estimated and the activation energies [40][41][42][43]50 judged to be scientific mistakes were reevaluated (Table 2). 59 .…”

Section: The Estimation Of Activation Energy (E a ) On Several Adsorpmentioning

confidence: 99%

“…Therefore, in previous studies [32][33][34][35][36][37][38] , although the kinetic experimental data at various temperatures were measured and the rate constants were estimated, the activation energies couldn't be calculated (See Table 1). But, the activation energies were calculated in some studies [39][40][41][42][43] using FMOE (fractal-like MOE) 8 or PSO (pseudo-second-order) 2 , these are scientific mistakes.…”

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confidence: 99%

A New Adsorption Rate Equation in Batch Systems

Hong¹,

Sin²,

Pak³

et al. 2018

Preprint

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In this paper, the deficiencies and cause of previous adsorption kinetic models were revealed, ne w adsorption rate equation has been proposed and its validities were verified by kinetic analysis of various experimental data. This work is a new vie w on the adsorption kinetics rather than a comment on the previous adsorption papers.Many adsorption kinetic models had been proposed and used during about 120 years. The frequently used and recently established 28 models 1-31 were listed in Table S1. The development of adsorption kinetic model has been conducted to obtain the specific models that agree better with the experimental data, as the result, dozens of kinetic models were established. The most of them were based on the Lagergren model 1 (in 1898) and Langmuir kinetic model 24 (in 1918), there were no innovative development. The Deficiencies and Cause of Previous Adsorption Kinetic ModelsCan those be used for the calculation of activation e nergy? One of the important objectives of kinetic study is to evaluate activation energy. Activation energy is the energy which must be available to a chemical system with potential reactants to result in a reaction. Activation energy is obtained by Arrhenius equation and the rate constants of different temperature.Activation energy can't be evaluated by the many of previous adsorption kinetic models, such as the pseudo-order models [1][2][3][4][12][13][14][15] and its changed types [5][6][7][8][20][21][22][23] . These models involve the adsorption amount q e (No. 1-9 and No. 13-21 in Table S1). When Arrhenius equation is used to calculate activation energy, the rate constants must be a constant at given temperature. However, not only the

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Removal of Pb(II) ions from aqueous solution by adsorption using bael leaves (Aegle marmelos)

Cited by 188 publications

References 28 publications

Mechanism of Pb2+ removal from aqueous solution using a nonliving moss biomass

Mechanism of Pb2+ removal from aqueous solution using a nonliving moss biomass

Applications on agricultural and forest waste adsorbents for the removal of lead (II) from contaminated waters

A New Adsorption Rate Equation in Batch Systems

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