Preliminary assessment of the performance of oyster shells and chitin materials as adsorbents in the removal of saxitoxin in aqueous solutions

Chemistry Central Journal

Silvia P Melegari²  William G Matias¹ 

[1] Laboratório de Toxicologia Ambiental, LABTOX, Depto. de Engenharia Sanitária e Ambiental, Universidade Federal de Santa Catarina, Campus Universitário, CEP: 88040-970, Florianópolis, SC, Brasil

[2] Laboratory of Environmental Toxicology (LABTOX), Department of Sanitary and Environmental Engineering, University Campus “Trindade”, Florianopolis, SC, CEP 88040-970, Brazil

关键词: Adsorption kinetic;    Adsorption isotherm;    Oyster shell;    Chitin;    Saxitoxin;   

Others  :  788090
DOI  :  10.1186/1752-153X-6-86

 received in 2012-06-08, accepted in 2012-08-02,  发布年份 2012

【 摘 要 】

Background

This study evaluated the adsorption capacity of the natural materials chitin and oyster shell powder (OSP) in the removal of saxitoxin (STX) from water. Simplified reactors of adsorption were prepared containing 200 mg of adsorbents and known concentrations of STX in solutions with pH 5.0 or 7.0, and these solutions were incubated at 25°C with an orbital shaker at 200 RPM. The adsorption isotherms were evaluated within 48 hours, with the results indicating a decrease in STX concentrations in different solutions (2–16 μg/L). The kinetics of adsorption was evaluated at different contact times (0–4320 min) with a decrease in STX concentrations (initial concentration of 10 μg/L). The sampling fractions were filtered through a membrane (0.20 μm) and analyzed with high performance liquid chromatography to quantify the STX concentration remaining in solution.

Results

Chitin and OSP were found to be efficient adsorbents with a high capacity to remove STX from aqueous solutions within the concentration limits evaluated (> 50% over 18 h). The rate of STX removal for both adsorbents decreased with contact time, which was likely due to the saturation of the adsorbing sites and suggested that the adsorption occurred through ion exchange mechanisms. Our results also indicated that the adsorption equilibrium was influenced by pH and was not favored under acidic conditions.

Conclusions

The results of this study demonstrate the possibility of using these two materials in the treatment of drinking water contaminated with STX. The characteristics of chitin and OSP were consistent with the classical adsorption models of linear and Freundlich isotherms. Kinetic and thermodynamic evaluations revealed that the adsorption process was spontaneous (ΔG_ads < 0) and favorable and followed pseudo-second-order kinetics.

【 授权许可】

   
2012 Melegari and Matias; licensee Chemistry Central Ltd.

【 图 表 】

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【 参考文献 】

• [1]Chow CW, Drikas M, House J, Burch MD, Velzeboer RM: The impact of conventional water treatment processes on cells of the cyanobacterium Microcystis aeruginosa. Water Res 1999, 33:3253-3262.
• [2]Jones GJ, Negri AP: Persistence and degradation of cyanobacterial paralytic shellfish poisons (PSPs) in freshwaters. Water Res 1997, 31:525-533.
• [3]Coral LA, Proença LAO, Bassetti FJ, Lapolli FR: Nanofiltration membranes applied to the removal of saxitoxin and congeners. Desalin Water Treat 2011, 27:8-17.
• [4]McCallum E, Hyung H, Do T, Huang C, Kim J: Adsorption, desorption, and steady-state removal of 17β-estradiol by nanofiltration membranes. J Membr Sci 2008, 19:38-43.
• [5]Orr PT, Jones GJ, Hamilton GR: Removal of saxitoxins from drinking water by granular activated carbon, ozone and hydrogen peroxide–implications for compliance with the Australian drinking water guidelines. Water Res 2004, 38:4455-4461.
• [6]Sens M, Melo Filho L, Mondardo R, Proença LAO: Ozonization: an alternative to water treatment to the removal of cyanobacteria. Revista de Ciencia & Tecnologia 2005, 13:47-54.
• [7]Keijola AM, Himberg K, Esala AL, Sivonen K, Hiis-Virta L: Removal of cyanobacterial toxins in water treatment processes: Laboratory and pilot-scale experiments. Toxicity Assessment 1988, 3:643-656.
• [8]Himberg K, Keijola A-M, Hiisvirta L, Pyysalo H, Sivonen K: The effect of water treatment processes on the removal of hepatotoxins from Microcystis and Oscillatoria cyanobacteria: A laboratory study. Water Res 1989, 23:979-984.
• [9]Burns JM, Hall S, Ferry JL: The adsorption of saxitoxin to clays and sediments in fresh and saline waters. Water Res 2009, 43:1899-1904.
• [10]Miller M, Critchley M, Hutson J, Fallowfield H: The adsorption of cyanobacterial hepatotoxins from water onto soil during batch experiments. Water Res 2001, 35:1461-1468.
• [11]Miller MJ, Hutson J, Fallowfield HJ: The adsorption of cyanobacterial hepatoxins as a function of soil properties. J Water Health 2005, 3:339-347.
• [12]Hoeger SJ, Hitzfeld BC, Dietrich DR: Occurrence and elimination of cyanobacterial toxins in drinking water treatment plants. Toxicon 2005, 203:231-242.
• [13]Upadhyayula VKK, Deng S, Mitchell MC, Smith GB: Application of carbon nanotube technology for removal of contaminants in drinking water: a review. Sci. Tot. Environm. 2009, 408:1-13.
• [14]Ikawa M, Wegener K, Foxall TL, Sasner JJ: Comparison of the toxins of the blue-green alga Aphanizomenon flos-aquae with the Gonyaulax toxins. Toxicon 1982, 20:747-752.
• [15]Bouaïcha N: Impact sanitaire des toxines de cyanobactéries en milieu d’eau douce. Rev Fr Lab 2001, 336:39-46.
• [16]Sivonen K, Jones G: Cyanobacterial toxins. In Toxic Cyanobacteria in Water: A guide to their public health consequences, monitoring and management - World Health Organization. Edited by Chorus I, Bartram J. London & New York: E & FN Spon; 1999:41-91.
• [17]Falconer IR: Health effects associated with controlled exposures to cyanobacterial toxins. In Cyanobacterial harmful algal blooms: state of the science and research needs. Proceedings of the Interagency, International Symposium on Cyanobacterial Harmful Algal Blooms (ISOC-HAB). Edited by Hudnell HK. North Carolina: Springer Press; 2008:607-612.
• [18]Perreault F, Matias MS, Melegari SP, Creppy EE, Popovic R, Matias WG: Investigation of animal and algal bioassays for reliable saxitoxin ecotoxicity and cytotoxicity risk evaluation. Ecotoxicol. Environm. Saf. 2011, 74:1021-1026.
• [19]Melegari SP, Perreault F, Moukha S, Popovic R, Creppy EE, Matias WG: Induction to oxidative stress by saxitoxin investigated through lipid peroxidation in Neuro 2A cells and Chlamydomonas reinhardtii alga. Chemosphere 2012, 89:38-43.
• [20]Grützmacher G, Böttcher G, Chorus I, Bartel H: Removal of microcystins by slow sand filtration. Environm. Toxicol. 2002, 17:386-394.
• [21]Goosen MFA: Applications of Chitin and Chitosan. Technomic Pub: Lancaster; 1996.
• [22]Mathur NK, Narang CK: Chitin and chitosan, versatile polysaccharides from marine animals. J Chem Educ 1990, 67:938.
• [23]Blais JF, Shen S, Meunier N, Tyagi RD: Comparison of natural adsorbents for metal removal from acidic effluent. Environ Technol 2003, 24:205-215.
• [24]Hsu T-C: Experimental assessment of adsorption of Cu2+ and Ni2+ from aqueous solution by oyster shell powder. J Hazard Mater 2009, 171:995-1000.
• [25]Kitano Y, Kanamori N, Yoshioka S: Adsorption of zinc and copper ions on calcite and aragonite and its influence on the transformation of aragonite to calcite. Geochem J 1976, 10:175-179.
• [26]Odoemelam SA, Eddy NO: Studies on the Use of Oyster, Snail and Periwinkle Shells as Adsorbents for the Removal of Pb2+ from Aqueous Solution. E-J. Chem. 2009, 6:213-222.
• [27]Solodovnik T: Application of chitin containing sorbents for treatment of water solutions. In Combined and Hybrid Adsorbents. Edited by Loureiro JM, Kartel MT. Netherlands: Springer; 2006:275-280.
• [28]Bessler KE, Rodrigues LC: The polymorphs of calcium carbonate - An easy synthesis of aragonite. Quim. Nova. 2008, 31:174-177.
• [29]Park WH, Polprasert C: Phosphorus adsorption characteristics of oyster shells and alum sludge and their application for nutrient control in constructed wetland system. J. Environ. Sci. Health. A. 2008, 43:511-517.
• [30]Park WH, Polprasert C: Roles of oyster shells in an integrated constructed wetland system designed for P removal. Ecol Eng 2008, 34:50-56.
• [31]Millero F, Huang F, Zhu X, Liu X, Zhang J-Z: Adsorption and desorption of phosphate on calcite and aragonite in seawater. Aquat Geochem 2001, 7:33-56.
• [32]Dutta PK, Ravikumar MNV, Dutta J: Chitin and chitosan for versatile applications. J. Macromol. Sci., Part C: Polymer Reviews 2002, 42:307-354.
• [33]Ravi Kumar MNV: A review of chitin and chitosan applications. React Funct Polym 2000, 46:1-27.
• [34]Rathke T, Hudson S: Review of chitin and chitosan as fiber and film formers. J. Macromol. Sci., Part C: Polymer Reviews 1994, 34:375-437.
• [35]Rinaudo M: Chitin and chitosan: Properties and applications. Progress Polym. Sci. 2006, 31:603-632.
• [36]Teng WL, Khor E, Tan TK, Lim LY, Tan S: Concurrent production of chitin from shrimp shells and fungi. Carbohyrd. Res. 2001, 332:305-316.
• [37]Peter M: Applications and Environmental Aspects of Chitin and Chitosan. J. Macromol. Sci., Part A 1995, 32:629-640.
• [38]Schwarzenbach RP, Gschwend PM, Imboden DM: Environmental Organic Chemistry. Hoboken: John Wiley & Sons, Inc; 2002.
• [39]Septhum C, Rattanaphani S, Bremner JB, Rattanaphani V: An adsorption study of Al(III) ions onto chitosan. J Hazard Mater 2007, 148:185-191.
• [40]Fávere VT, Riella HG, Rosa S: Chitosan-N-2-hydroxypropyl trimethyl ammonium chloride as adsorbent for the removal of the reactive dye from aqueous solutions. Quim. Nova 2010, 33:1476-1481.
• [41]Bhatnagar A, Sillanpää M: Utilization of agro-industrial and municipal waste materials as potential adsorbents for water treatment - A review. Chem Eng J 2010, 157:277-296.
• [42]Choi U-K, Lee O-H, Kim Y-C: Effect of calcinated oyster shell powder on growth, yield, spawn run, and primordial formation of king oyster mushroom (Pleurotus eryngii). Molecules 2011, 16:2313-2322.
• [43]Ohe T: Antigenotoxic activities of chitin and chitosan as assayed by sister chromatid exchange. Sci. Tot. Environm. 1996, 181:1-5.
• [44]AOAC: AOAC Official Method 2005.06 Paralytic Shellfish Poisoning Toxins in Shellfish. 2005.