Kinetic Studies of Competitive Heavy Metal Adsorption by Sphagnum Moss Peat

Ho, Yuh‐Shan; Wase, D. A. J.; Forster, C.F.

doi:10.1080/09593331708616362

Cited by 574 publications

(261 citation statements)

References 0 publications

Supporting

Mentioning

235

Contrasting

Unclassified

Order By: Relevance

“…According to this model, the initial uptake rate is given by: e ads 1, in 1ads, q k r (2) Heavy metal adsorption kinetics can be also modelled by using a pseudo-secondorder rate equation [14], based on the sorption capacity of the solid phase: This model predicts the behaviour over the whole range of adsorption and is in agreement with a mechanism where adsorption is the rate controlling step [15]. The initial uptake rate is given by: …”

Section: Reaction Modelsmentioning

confidence: 98%

Removal of Cd(II), Zn(II) and Pb(II) from aqueous solutions by brown marine macro algae: Kinetic modelling

Freitas

Martins

Delerue–Matos

et al. 2008

Journal of Hazardous Materials

160

View full text Add to dashboard Cite

Specific marine macro algae species abundant at the Portuguese coast (Laminaria hiperborea, Bifurcaria bifurcata, Sargassum muticum and Fucus spiralis) were shown to be effective for removing toxic metals (Cd(II), Zn(II) and Pb(II)) from aqueous solutions. The initial metal concentrations in solution were about 75-100 mg L -1 . The observed biosorption capacities for cadmium, zinc and lead ions were in the ranges of 23.9-39.5 mg g -1 , 18.6-32.0 mg g -1 and 32.3-50.4 mg g -1 , respectively. Kinetic studies revealed that the metal uptake rate was rather fast, with 75% of the total amount occurring in the first 10 min for all algal species.Experimental data were well fitted by a pseudo-second order rate equation. The contribution of internal diffusion mechanism was significant only to the initial biosorption stage. Results indicate that all the studied macro algae species can provide an efficient and cost-effective technology for eliminating heavy metals from industrial effluents.

show abstract

Section: Reaction Modelsmentioning

confidence: 98%

Removal of Cd(II), Zn(II) and Pb(II) from aqueous solutions by brown marine macro algae: Kinetic modelling

Freitas

Martins

Delerue–Matos

et al. 2008

Journal of Hazardous Materials

160

View full text Add to dashboard Cite

show abstract

“…The firstorder reaction model (Lagergreen, 1898) was used to check all the results but the correlation coefficient was not high (results not shown). The experimental data were also analysed using the pseudo-second order equation proposed by Ho et al, 1996. The differential equation that describes the pseudo-second order is the following:…”

Section: Sorption Dynamicsmentioning

confidence: 99%

Chromium (VI) uptake by grape stalks wastes encapsulated in calcium alginate beads: equilibrium and kinetics studies

Fiol

Poch

Villaescusa

2004

Chemical Speciation & Bioavailability

View full text Add to dashboard Cite

“…These include mungbean husk [5], hazelnut shell [6], almond shell [6], pine [7], lignin [8], tea leaves [9], tree ferm [10], groundnut husks [11], sphagnum moss peat [12], sawdust [13], rice hulls [14], chitosan [14], sugarcane bagasse [15], cocoa shell [16], and rice husk [17]. However, some major limitations of these biosorptions are that some of them have not yielded satisfactory results (high metal adsorption capacity) and others that yielded good results may not locally be available.…”

Section: Introductionmentioning

confidence: 99%

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

Olu-Owolabi

Diagboya

Ebaddan

2012

Chemical Engineering Journal

View full text Add to dashboard Cite

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.

show abstract

Kinetic Studies of Competitive Heavy Metal Adsorption by Sphagnum Moss Peat

Cited by 574 publications

References 0 publications

Removal of Cd(II), Zn(II) and Pb(II) from aqueous solutions by brown marine macro algae: Kinetic modelling

Removal of Cd(II), Zn(II) and Pb(II) from aqueous solutions by brown marine macro algae: Kinetic modelling

Chromium (VI) uptake by grape stalks wastes encapsulated in calcium alginate beads: equilibrium and kinetics studies

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

Contact Info

Product

Resources

About