Activation of pine cone using Fenton oxidation for Cd(II) and Pb(II) removal

Argun, Mehmet Emin; Dursun, Şükrü; Karataş, Mustafa; Gürü, Metin

doi:10.1016/j.biortech.2008.04.014

Cited by 159 publications

(56 citation statements)

References 37 publications

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“…Adsorption isotherms studies are notably important for the study of metal ion binding behavior with biosorbent surface or in other words metal ion partition between solid and liquid phase and to evaluate the biosorption capacity at equilibrium as a function of adsorbate concentration [58] and rate of change of temperature. Data obtained through such studies are very helpful in designing of batch process as well as continuous reaction columns [59,60].…”

Section: Isotherm Kinetic and Mechanistic Modelingmentioning

confidence: 99%

Zn(II) Ion Biosorption onto Surface of Eucalyptus Leaf Biomass: Isotherm, Kinetic, and Mechanistic Modeling

Mishra

Balomajumder

Agarwal

2010

CLEAN Soil Air Water

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Bioremediation of Zn(II) by biosorption across aqueous phase on to surface of eucalyptus leaf powder has been investigated in present research work. The adsorptive potential of eucalyptus leaf powder was evaluated as function of pH, temperature, contact time, agitation rate and particle size. Maximum metal ion uptake and percentage removal capacity of eucalyptus leaf powder were 23.5 mg g À1 and 94%, respectively, at optimized pH 5, 20 AE 18C, contact time 6 h, particle size 0.5 mm and agitation rate 200 rpm. The biomass surface analysis revealed the fact that the biomass surface was heterogeneous and porous in nature. The functional groups like amine, amide, carboxyl, hydroxyl, and methyl groups, significantly important for metal ion binding were present on biomass surface in tremendous amount. Additionally, the Fourier transformation IR spectrum analysis of acid and base activated eucalyptus leaf biomass ruled out all the possibilities of the presence of surface functional groups mentioned above. The reaction rate was studied by applying two rate limiting models pseudo first and pseudo second order. Pseudo second order model was found to be more suitable (R 2 ¼ 0.998) in comparison to pseudo first order (R 2 ¼ 0.724). Adsorption equilibrium of batch stirred reaction data fitting shows the dominance of Langmuir isotherm (R 2 ¼ 0.99) against Freundlich isotherm (R 2 ¼ 0.887) model with equipartitional involvement of both film and intra particle diffusion as rate limiting steps at differential status of contact time.Keywords: Bioremediation; Intra particle diffusion; Langmuir isotherm; Pseudo second order reaction; Zn(II) ion IntroductionThe rapid and tremendous industrial development during last decade has increased the heavy metal pollution in environment [1,2]. Heavy metals are non-biodegradable and have tendency to get accumulated inside the human body via incorporation through food chain [3][4][5][6][7]. Major industrial operations unit like metallurgy, steel production, paint and pigment industry, copper smelting unit, acid mine drainage, electroplating, and metal finishing significantly contribute to heavy metal pollution in natural water streams [8][9][10][11][12]. Various remedial technologies/unit operations viz. osmosis, electro coagulation and flocculation, reverse osmosis, solvent extraction, hydroxide precipitation, and membrane separation have been adopted to remove heavy metals across liquid phase [13,14]. In general, all these above mentioned technologies are expensive, lead to generation of secondary chemical sludge containing heavy metals, making the disposal of sludge questionable, and ineffective in removing heavy metals including Zn(II), Cd(II), Pb(II), Cu(II), and Cr(III) at low concentration levels ranging between 1 and 100 mg L À1 [10,[15][16][17][18][19]. Zinc is one of the elements of heavy metal series. Though zinc is an essential element of life but its exposure beyond permissible limit, defined by United States Environmental Protection Agency, World Health Organization, Canadian Wate...

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Section: Isotherm Kinetic and Mechanistic Modelingmentioning

confidence: 99%

Zn(II) Ion Biosorption onto Surface of Eucalyptus Leaf Biomass: Isotherm, Kinetic, and Mechanistic Modeling

Mishra

Balomajumder

Agarwal

2010

CLEAN Soil Air Water

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“…The surface of PC contains various functional groups such as alcohols and aldehydes in its cellulose, hemicelluloses, and lignin fractions, which make it suitable for a series of chemical reactions (condensation, etherification, and copolymerization) and surface modifications (Benyoucef and Amrani 2011). Many studies have reported the utilization of PC as an effective biosorbent for the removal of Cu(II) and Pb(II) (Ofomaja et al 2010), Cd(II) and Pb(II) (Argun et al 2008), Cr(IV) (Ucun et al 2008), phosphate ions (Benyoucef and Amrani 2011), textile dyes (Mahmoodi et al 2011), phenol (Vazquez et al 2006), and anionic surfactant sodium dodecyl sulfate (Sen et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Arsenic(III) removal from aqueous solution by raw and zinc-loaded pine cone biochar: equilibrium, kinetics, and thermodynamics studies

Vinh

Zafar

Behera

et al. 2014

Int. J. Environ. Sci. Technol.

152

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The potential of raw pine cone (PC) biochar and its modified form (Zn-loaded biochar) was evaluated for the removal of trivalent arsenic [As(III)] from the aqueous solution. The influence of treatment of PC biochar with Zn(NO 3 ) 2 on the physico-chemical properties of biochar was examined using elemental analyzer, surface area analyzer, thermo-gravimetric analyzer, Fourier transform infrared spectroscopy, and scanning electron microscopy. Experimental results revealed that the removal of As(III) was almost consistent (66.08 ± 3.94 and 87.62 ± 3.88 % on raw and Zn-loaded biochar, respectively) over an acidic pH range of 2-4 as a consequence of high affinity between the positively charged biochar surface and the predominant arsenic species (H 3 AsO 3 and H 2 AsO 4 -), followed by a decrease with increase in pH in the range of 4-12. Langmuir isotherm model was well fitted to the experimental equilibrium data (R 2 = 0.93) rendering the maximum adsorption capacity of 5.7 and 7.0 lg g -1 on raw and Znloaded PC biochar, respectively. The adsorption of As(III) was well represented by pseudo-second order with reaction rate constant (k 2 ) of 0.040 and 0.282 mg g -1 min on raw and zinc-loaded PC biochar, respectively, and was mainly controlled by boundary layer diffusion followed by some extent of intra-particle diffusion. The adsorption process was spontaneous with Gibb's free energy (DG°, -4.42 ± 0.72 and -11.86 ± 1.78 kJ mol -1 ) and exothermic in nature with enthalpy (DH°, 13.25 and 31.10 kJ mol -1) and entropy (DS°, 0.058 and 0.141 kJ mol -1 K -1 ) for raw and zinc-loaded adsorbent, respectively.

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“…The EDX pattern of CAS Fig. 9a before sorption shows the presence of calcium (Ca) and magnesium (Mg) signals and the absence of Pb 2+ and Cd 2+ signals [22]. After sorption diminished peak of Mg and Ca and the presence of Pb 2+ in Fig.…”

Section: Energy Dispersive X-ray Analysismentioning

confidence: 99%

Removal of lead and cadmium ions from water using Annona squamosa shell: kinetic and equilibrium studies

Isaac

Sivakumar

2013

Desalination and Water Treatment

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A B S T R A C TAdsorbent prepared from Annona squamosa (custard apple) fruit shell (CAS) was successfully used to remove lead (Pb 2+ ) and cadmium (Cd 2+ ) from aqueous solution in a batch process. Adsorption studies were conducted on a batch process, to study the effects of contact time, initial concentration of metal ions, adsorbent dose CAS, pH and temperature. The optimum contact time and pH for the removal of Pb 2+ and Cd 2+ was 30 min and pH 5, respectively. Kinetic parameters of adsorptions such as pseudo-first order, pseudo-second order were determined. The maximum loading capacity of Pb 2+ and Cd 2+ was found to be 90.93 and 71.0 mg g À1 of the adsorbent, respectively. The equilibrium data were analyzed by the Langmuir and Freundlich isotherms. Langmuir model gives a better fit than the Freundlich model. The pseudo-secondorder kinetics was the best for the adsorption of Pb 2+ and Cd 2+ , by CAS (A. Squamosa) with good correlation. Thermodynamic parameters, such as standard free energy change (DG˚), standard enthalpy change (DH˚) and standard entropy change (DS˚), were analyzed. The results suggest that the CAS can be used as an effective, low cost, and eco-friendly green adsorbent for the removal of selected metal ions from aqueous solution.

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Activation of pine cone using Fenton oxidation for Cd(II) and Pb(II) removal

Cited by 159 publications

References 37 publications

Zn(II) Ion Biosorption onto Surface of Eucalyptus Leaf Biomass: Isotherm, Kinetic, and Mechanistic Modeling

Zn(II) Ion Biosorption onto Surface of Eucalyptus Leaf Biomass: Isotherm, Kinetic, and Mechanistic Modeling

Arsenic(III) removal from aqueous solution by raw and zinc-loaded pine cone biochar: equilibrium, kinetics, and thermodynamics studies

Removal of lead and cadmium ions from water using Annona squamosa shell: kinetic and equilibrium studies

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