Modeling of Phosphate Removal by Mg-Al Layered Double Hydroxide Functionalized Biochar and Hydrochar from Aqueous Solutions

Document Type : Research Article

Authors

1 Department of Soil Science, Faculty of Agriculture, University of Tabriz, Tabriz, I.R. IRAN

2 Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, I.R. IRAN

Abstract

Layered double hydroxide functionalized biochar and hydrochar composites are environmentally friendly and low-cost adsorbents for the removal of phosphate from aqueous solutions. In the present study, Mg-Al layered double hydroxide functionalized apple wood biochar and hydrochar were prepared and their phosphate adsorption characteristics were examined through batch experiments. Moreover, important factors affecting adsorption including initial phosphorus concentration (25-200 mg/L), contact time (5-120 min), ionic strength (deionized water, and 0.001, 0.01, and 0.1 mol/L KCl), pH (3-10), and adsorbent dosage (1, 2, 3, and 4 g/L) were investigated. Based on the results, the phosphate adsorption by Mg-Al layered double hydroxide modified biochar and hydrochar were comparable with Mg-Al layered double hydroxide and were greater than biochar and hydrochar. As expected, phosphate adsorption was decreased by increasing solution pH and ionic strength. The highest phosphate removal was attained at pH 4, adsorbent dosage of 4 g/L, and in the presence of deionized water as a background solution. Determination of adsorption characteristics of the adsorbents revealed that the phosphate adsorption mechanism involved a combination of electrostatic attraction, interlayer anion exchange, and formation of surface complexes. The Mg-Al layered double hydroxide modified biochar and hydrochar composites as cost-effective and efficient adsorbents suggest alternative biochar- and hydrochar-based composites for the phosphate removal from contaminated waters that could be used as P-fertilizers.

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[1] Desmidt E., Ghyselbrecht K., Zhang Y., Pinoy L., Van der Bruggen B., Verstraete W., Rabaey K., Meesschaert B., Global Phosphorus Scarcity and Full-scale P-recovery Techniques: A Review, Crit. Rev. Env. Sci. Technol., 45: 336-384 (2015).
[2] Lalley J., Han C., Li X., Dionysiou D.D., Nadagouda M.N., Phosphate Adsorption Using Modified Iron Oxide-based Adsorbents in Lake Water: Kinetics, Equilibrium, and Column Tests, Chem. Eng. J., 284: 1386-1396 (2016).
[3] Najafi N., “Phosphorus Slow Release Fertilizers: Preparation Methods and Their Effects on Phosphorus Uptake and Plant Growth”, Presented at the 15th Iranian Soil Science Congress, Isfahan, Iran, August 28-30. [In Persian with English Abstract] (2017).
[4] He H., Kang H., Ma S., Bai Y., Yang X., High Adsorption Selectivity of ZnAl Layered Double Hydroxides and the Calcined Materials Toward Phosphate, J. Colloid Interface Sci., 343: 225-231 (2010).
[5] Lǚ J., Liu H., Liu R., Zhao X., Sun L., Qu J., Adsorptive Removal of Phosphate by a Nanostructured FeAl–Mn Trimetal Oxide Adsorbent, Powder Technol., 233: 146-154 (2013).
[6] Yao Y., Gao B., Chen J., Yang L., Engineered Biochar Reclaiming Phosphate from Aqueous Solutions: Mechanisms and Potential Application as a Slow-Release Fertilizer, Environ. Sci. Technol., 47: 8700-8708 (2013).
[7] Zhang M., Gao B., Fang J., Creamer A.E., Ullman J.L., Self-assembly of Needle-like Layered Double Hydroxide (LDH) Nanocrystals on Hydrochar: Characterization and Phosphate Removal Ability, RSC Adv., 4: 28171-28175 (2014).
[8] Khitous M., Salem Z., Halliche D., Removal of Phosphate from Industrial Wastewater Using Uncalcined MgAl-NO3 Layered Double Hydroxide: Batch Study and Modeling, Desalin. Water Treat., 57: 15920-15931 (2016).
[9] Wang S., Gao B., Li Y., Zimmerman A.R., Cao X., Sorption of Arsenic Onto Ni/Fe Layered Double Hydroxide (LDH)-Biochar Composites, RSC Adv., 6: 17792-17799 (2016).
[10] Das J., Patra B., Baliarsingh N., Parida K., Adsorption of Phosphate by Layered Double Hydroxides in Aqueous Solutions, Appl. Clay Sci., 32: 252-260 (2006).
[12] Li R., Wang J.J., Zhou B., Awasthi M.K., Ali A., Zhang Z., Lahori A.H., Mahar A., Recovery of Phosphate from Aqueous Solution by Magnesium Oxide Decorated Magnetic Biochar and its Potential as phosphate-Based Fertilizer Substitute, Bioresour. Technol., 215: 209-214 (2016).
[14] Gokila B., Baskar K., Characterization of Prosofis juliflora L. Biochar and Its Influence of Soil Fertility on Maize in Alfisols, Int. J. Plant Animal Environ. Sci, 5: 123-127 (2015).
[15] Xiao X., Chen B., Chen Z., Zhu L., Schnoor J.L., Insight Into Multiple and Multilevel Structures ‎of Biochars and Their Potential Environmental Applications: A Critical Review, Environ. ‎Sci. Technol., 52(9): 5027-5047 (2018).
[16] Lian F., Xing B., Black Carbon (Biochar) in Water/Soil Environments: Molecular ‎Structure, Sorption, Stability, and Potential Risk, Environ. Sci. Technol., 51(23): 13517-13532 (2017).‎
[17] Zhang M., Gao B., Yao Y., Inyang M., Phosphate Removal Ability of Biochar/MgAl-LDH Ultra-Fine Composites Prepared by Liquid-Phase Deposition, Chemosphere, 92: 1042-1047 (2013).
[18] Li R., Wang J.J., Zhou B., Awasthi M.K., Ali A., Zhang Z., Gaston L.A., Lahori A.H., Mahar A., Enhancing Phosphate Adsorption by Mg/Al Layered Double Hydroxide Functionalized Biochar with Different Mg/Al Ratios, Sci. Total Environ., 559: 121-129 (2016).
[19] Wan S., Wang S., Li Y., Gao B., Functionalizing Biochar with Mg–Al and Mg–Fe Layered Double Hydroxides for Removal of Phosphate from Aqueous Solutions, J. Indust. Eng. Chem., 47: 246-253 (2017).
[20] Xue L., Gao B., Wan Y., Fang J., Wang S., Li Y., Muñoz-Carpena R., Yang L., High Efficiency and Selectivity of MgFe-LDH Modified Wheat-Straw Biochar in the Removal of Nitrate from Aqueous Solutions, J. Taiwan Inst. Chem. Eng., 63: 312-317 (2016).
[21] Tan X.-f., Liu Y.-g., Gu Y.-l., Liu S.-b., Zeng G.-m., Cai X., Hu X.-j., Wang H., Liu S.-m., Jiang L.-h., Biochar Pyrolyzed from MgAl-Layered Double Hydroxides Pre-coated Ramie Biomass (Boehmeria nivea (L.) Gaud.): Characterization and Application for Crystal Violet Removal, J. Environ. Manage., 184: 85-93 (2016).
[22] Zhao D., Feng S., Chen C., Chen S., Xu D., Wang X., Adsorption of Thorium (IV) on MX-80 Bentonite: Effect of pH, Ionic Strength and Temperature, Appl. Clay Sci., 41: 17-23 (2008).
[23] Li J., Hu J., Sheng G., Zhao G., Huang Q., Effect of pH, Ionic Strength, Foreign Ions and Temperature on the Adsorption of Cu (II) from Aqueous Solution to GMZ Bentonite, Colloids Surf., A: Physicochemical and Engineering Aspects, 349: 195-201 (2009).
[24] Yao Y., Gao B., Inyang M., Zimmerman A.R., Cao X., Pullammanappallil P., Yang L., Removal of Phosphate from Aqueous Solution by Biochar Derived from Anaerobically Digested Sugar Beet Tailings, J. Hazard. Mater., 190: 501-507 (2011).
[25] Mohammadi M., Bahmanyar M., Sadeghzadeh F., Biparva P., Synthesis of Mg/Al Layered Double Hydroxide (LDH) Nanoplates for Efficient Removal of Nitarate from Aqueous Solutions, J. Fundam. Appl. Sci, 8: 1058-1071 (2016).
[26] Ma W., Zhao N., Yang G., Tian L., Wang R., Removal of Fuoride Ions Fromaqueous Solution by the Calcination Product of Mg–Al–Fe Hydrotalcite-like Compound, Desalination, 268(1): 20-26 (2011).
[27] Tran H.N., You S.J., Hosseini-Bandegharaei A., Chao H.P., Mistakesand Inconsistencies ‎Regarding‎ Adsorption of Contaminants from Aqueous Solutions: A Critical Review, Water ‎Res., 120: 88-116 (2017).‎
[28] Ding L., Wu C., Deng H., Zhang X., Adsorptive Characteristics of Phosphate from Aqueous Solutions by MIEX Resin, J. Colloid Interface Sci., 376(1): 224-232 (2012).
[29] Halajnia A., Oustan S., Najafi N., Khataee A., Lakzian A., The Adsorption Characteristics of Nitrate on Mg–Fe and Mg–Al Layered Double Hydroxides in a Simulated Soil Solution, Appl. Clay Sci., 70: 28-36 (2012).
[30] Hoseini S.R., Alidokht L., Oustan S., Aliasgharzad N., Najafi N., Kinetics of Cr(VI) Removal by Iron Filings in Some Soils, Soil Sediment Contam., 24(5): 554-572 (2015).
[31] Evans D.G., Slade R.C., “Structural Aspects of Layered Double Hydroxides, Layered Double Hydroxides”, Springer, pp. 1-87 (2006).
[32] Yan L.-g., Yang K., Shan R-r., Yan T., Wei J., Yu S.-j., Yu H.-q., Du B., Kinetic, Isotherm and Thermodynamic Investigations of Phosphate Adsorption Onto Core-Shell [email protected] Composites with Easy Magnetic Separation Assistance, J. Colloid Interface Sci., 448: 508-516 (2015).
[34] Rives V., Kannan S., Layered Double Hydroxides with the Hydrotalcite-Type Structure Containing Cu2+, Ni2+ and Al3+, J. Mater. Chem., 10: 489-495 (2000).
[36] Yao Y., Gao B., Chen J., Zhang M., Inyang M., Li Y., Alva A., Yang L., Engineered Carbon (Biochar) Prepared by Direct Pyrolysis of Mg-accumulated Tomato Tissues: Characterization and Phosphate Removal Potential, Bioresour. Technol., 138: 8-13 (2013).
[37] Li R., Wang J.J., Zhou B., Zhang Z., Liu S., Lei S., Xiao R., Simultaneous Capture Removal of Phosphate, Ammonium and Organic Substances by MgO Impregnated Biochar and Its Potential Use in Swine Wastewater Treatment, J. Clean. Prod., 147: 96-107 (2017).
[38] Takaya C., Fletcher L., Singh S., Anyikude K., Ross A., Phosphate and Ammonium Sorption Capacity of Biochar and Hydrochar from Different Wastes, Chemosphere, 145: 518-527 (2016).
[39] Seida Y., Nakano Y., Removal of Phosphate by Layered Double Hydroxides Containing Iron, Water Res., 36: 1306-1312 (2002).
[40] Fang C., Zhang T., Li P., Jiang R., Wu S., Nie H., Wang Y., Phosphorus Recovery from Biogas Fermentation Liquid by Ca–Mg Loaded BiocharJ. Environ. Sci., 29: 106-114 (2015).
[41] Krishnan K.A., Haridas A., Removal of Phosphate from Aqueous Solutions and Sewage Using Natural and Surface Modified Coir Pith, J. Hazard. Mater., 152: 527-535 (2008).