Investigation of date stone meal efficiency in removal of cadmium from aqueous solutions: Adsorption isotherm and kinetic studies

Afshin Takdastan, Nematollah Jaafarzadeh, Mehrnoosh Abtahi, Foruogh Alighasemi



Background and Aims: One of the most important issues of today’s world is water scarcity and water supply pollution with heavy metals. This study aimed to investigate the removal of cadmium ions by date stone meal from aqueous solution.
Materials and Methods: Date stone meal was prepared of date packaging workshop in Shadegan city, with the permission of the head of the workshop. This was an experimental study in laboratory by
batch system. In this study was investigated test variables effects including pH, adsorbent dose, initial concentration of cadmium and reaction time on removal efficiency. The concentration of cadmium ions
was measured using atomic absorption. In carrying out this study, and the use of resources, ethical issues was conducted.
Results: The results showed that the adsorption capacity of cadmium on date stone meal dependent on the parameters of pH, adsorbent dose, initial concentration and contact time. Adsorption capacity increased by increasing of pH, adsorbent dose and contact time, while it decreased with increasing initial concentration.
The optimum efficiency was obtained in the pH 6, adsorbent dosage of 3 g/L, the initial concentration of 15 mgCd/L, and 15 min contact time. The result showed that cadmium adsorption isotherm by date stone meal is followed the Freundlich model. The best model of cadmium adsorption kinetics in this study, was shown pseudo-second-order kinetic model.
Conclusion: In this study, it was found that date stone meal, have a high ability to adsorb cadmium and can be used as a low-cost adsorbent.
Keyword: Cadmium, Adsorption, Date stone meal, Isotherms, Kinetics

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- Al-Dujaili AH, Awwad AM, Salem NM. Biosorption of cadmium (II) onto loquat leaves (Eriobotrya japonica) and their ash from aqueous solution, equilibrium, kinetics, and thermodynamic studies. International Journal of Industrial Chemistry 2012; 3(1):1-7.

- Holan Z, Volesky B. Biosorption of lead and nickel by biomass of marine algae. Biotechnology and Bioengineering 1994; 43(11):1001-1009.

- Abtahi M, Mesdaghinia A, Saeedi R, Nazmara S. Biosorption of As (III) and As (V) from aqueous solutions by brown macroalga Colpomenia sinuosa biomass: Kinetic and equilibrium studies. Desalination and Water Treatment 2013; 51(16-18):3224-32.

- Naddafi K, Rastkari N, Nabizadeh R, Saeedi R, Gholami M, Sarkhosh M. Adsorption of 2, 4, 6-trichlorophenol from aqueous solutions by a surfactant-modified zeolitic tuff: batch and continuous studies. Desalination and Water Treatment 2016; 57(13):5789-99.

- Gupta VK, Ali I. Removal of lead and chromium from wastewater using bagasse fly ash—a sugar industry waste.Journal of Colloid and Interface Science 2004; 271(2):321-28.

- Ghaneian MT, Ehrampoush MH, jamshidi B, Soudaiezadeh H, Askarishahi M, Dehvari M. Application of biosorption process by pomegranate seed powder in the removal of hexavalent chromium from aqueous environment.

Koomesh 2013; 15(2):205-15 (In Persian)

- Dąbrowski A. Adsorption—from theory to practice. Advances in Colloid and Interface Science 2001; 93(1):135-224.

- Ahuja P, Gupta R, Saxena R. Zn 2+ biosorption by Oscillatoria anguistissima. Process Biochemistry 1999;34(1):77-85.

- Filipović-Kovačević Ž, Sipos L, Briški F. Biosorption of chromium, copper, nickel and zinc ions onto fungal pellets of Aspergillus niger 405 from aqueous solutions. Food Technology and Biotechnology 2000; 38(3):211-16.

- Malarvizhi T, Santhi T, Manonmani S. A comparative study of modified lignite fly ash for the adsorption of nickel from aqueous solution by column and batch mode study. Research Journal of Chemical Sciences 2013;3(2):44-53.

- Li W, Zhang L, Peng J, Li N, Zhang S, Guo S. Tobacco stems as a low cost adsorbent for the removal of Pb (II)

from wastewater: Equilibrium and kinetic studies. Industrial crops and products 2008; 28(3):294-302.

- El-Shafey E. Removal of Zn (II) and Hg (II) from aqueous solution on a carbonaceous sorbent chemically prepared from rice husk. Journal of Hazardous Materials 2010; 175(1):319-27.

- Farooq U, Kozinski JA, Khan MA, Athar M. Biosorption of heavy metal ions using wheat based biosorbents–a review of the recent literature. Bioresource Technology 2010; 101(14):5043-53.

- Abdel-Ghani N, Hefny M, El-Chaghaby GA. Removal of lead from aqueous solution using low cost abundantly available adsorbents. International Journal of Environmental Science & Technology 2007; 4(1):67-73.

- Jameel A, Hussain A. Removal of heavy metals from wastewater using activated rice husk carbon as adsorbent.

Indian Journal of Environmental Protection 2009; 29:263-65.

- Briones R, Serrano L, Younes RB, Mondragon I, Labidi J. Polyol production by chemical modification of date seeds. Industrial Crops and Products 2011; 34(1):1035-40.

- Mehdinia SMAM, Khalilollah%A Rastgoo, Tayebe. Studying the Cadmium Removability from Aqueous Solutions Using Raw Husk Rice, Bran and Rice Husk Silica. Journal of Babol University Of Medical Sciences

; 16(10):52-5 (In Persian).

- Daifullah A, Girgis B, Gad H. Utilization of agro-residues (rice husk) in small waste water treatment plans.Materials Letters 2003; 57(11):1723-31.

- Oluyemi EA, Adeyemi AF, Olabanji IO. Removal of Pb 2+ and Cd 2+ ions from wastewaters using palm kernel shell charcoal (PKSC). Research Journal in Engineering and Applied Sciences 2012; 1(5):308-13.


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