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Adsorption of lead(II) from aqueous solution onto Hydrilla verticillata.
Biodegradation. 2009 Sep; 20(5):651-60.B

Abstract

The adsorption of Pb(II) onto Hydrilla verticillata was examined in aqueous solution with parameters of pH, adsorbent dosage, contact time and temperature. The linear Langmuir and Freundlich models were applied to describe equilibrium isotherms, and both models fitted well. The monolayer adsorption capacity of Pb(II) was found as 104.2 mg/g at pH 4 and 25 degrees C. Dubinin-Radushkevich (D-R) isotherm model was also applied to the equilibrium data. The mean free energy of adsorption (15.81 kJ/mol) indicated that the adsorption of Pb(II) onto H. verticillata may be carried out via chemical ion-exchange mechanism. Thermodynamic parameters, free energy (DeltaG (0)), enthalpy (DeltaH (0)) and entropy (DeltaS (0)) of adsorption were also calculated. These parameters showed that the adsorption of Pb(II) onto H. verticillata was a feasible, spontaneous and exothermic process in nature. The influence of Cd(2+), Cu(2+) and Ni(2+) on adsorption of Pb(2+) onto H. verticillata was studied, too. In the investigated range of operating conditions, it was found that the existence of Cd (2+), Cu (2+) and Ni (2+) had no impact on the adsorption of Pb(2+).

Authors+Show Affiliations

College of Environmental Science & Engineering, Hunan University, 410082, Changsha, People's Republic of China. hlz-121@163.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19267202

Citation

Huang, Ling-zhi, et al. "Adsorption of lead(II) From Aqueous Solution Onto Hydrilla Verticillata." Biodegradation, vol. 20, no. 5, 2009, pp. 651-60.
Huang LZ, Zeng GM, Huang DL, et al. Adsorption of lead(II) from aqueous solution onto Hydrilla verticillata. Biodegradation. 2009;20(5):651-60.
Huang, L. Z., Zeng, G. M., Huang, D. L., Li, L. F., Huang, P. M., & Xia, C. B. (2009). Adsorption of lead(II) from aqueous solution onto Hydrilla verticillata. Biodegradation, 20(5), 651-60. https://doi.org/10.1007/s10532-009-9252-4
Huang LZ, et al. Adsorption of lead(II) From Aqueous Solution Onto Hydrilla Verticillata. Biodegradation. 2009;20(5):651-60. PubMed PMID: 19267202.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Adsorption of lead(II) from aqueous solution onto Hydrilla verticillata. AU - Huang,Ling-zhi, AU - Zeng,Guang-ming, AU - Huang,Dan-lian, AU - Li,Li-feng, AU - Huang,Peng-mian, AU - Xia,Chang-bin, Y1 - 2009/03/07/ PY - 2008/08/30/received PY - 2009/02/19/accepted PY - 2009/3/10/entrez PY - 2009/3/10/pubmed PY - 2009/12/16/medline SP - 651 EP - 60 JF - Biodegradation JO - Biodegradation VL - 20 IS - 5 N2 - The adsorption of Pb(II) onto Hydrilla verticillata was examined in aqueous solution with parameters of pH, adsorbent dosage, contact time and temperature. The linear Langmuir and Freundlich models were applied to describe equilibrium isotherms, and both models fitted well. The monolayer adsorption capacity of Pb(II) was found as 104.2 mg/g at pH 4 and 25 degrees C. Dubinin-Radushkevich (D-R) isotherm model was also applied to the equilibrium data. The mean free energy of adsorption (15.81 kJ/mol) indicated that the adsorption of Pb(II) onto H. verticillata may be carried out via chemical ion-exchange mechanism. Thermodynamic parameters, free energy (DeltaG (0)), enthalpy (DeltaH (0)) and entropy (DeltaS (0)) of adsorption were also calculated. These parameters showed that the adsorption of Pb(II) onto H. verticillata was a feasible, spontaneous and exothermic process in nature. The influence of Cd(2+), Cu(2+) and Ni(2+) on adsorption of Pb(2+) onto H. verticillata was studied, too. In the investigated range of operating conditions, it was found that the existence of Cd (2+), Cu (2+) and Ni (2+) had no impact on the adsorption of Pb(2+). SN - 1572-9729 UR - https://www.unboundmedicine.com/medline/citation/19267202/Adsorption_of_lead_II__from_aqueous_solution_onto_Hydrilla_verticillata_ L2 - https://doi.org/10.1007/s10532-009-9252-4 DB - PRIME DP - Unbound Medicine ER -