Efficient phosphate removal from wastewater by MgAl-LDHs modified hydrochar derived from tobacco stalk

被引：53

作者：

He H. ^{[1
]}

Zhang N. ^{[1
]}

Chen N. ^{[2
]}

Lei Z. ^{[1
]}

Shimizu K. ^{[1
]}

Zhang Z. ^{[1
]}

机构：

[1] Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8572, Ibaraki

[2] School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing

来源：

Bioresource Technology Reports | 2019年 / 8卷

关键词：

Hydrothermal carbonization; Mg/Al modification; Phosphate adsorption; Tobacco stalk; Wastewater;

D O I：

10.1016/j.biteb.2019.100348

中图分类号：

学科分类号：

摘要：

The MgAl-LDHs modified hydrochar composite was prepared through carbonization of tobacco stalk (TS) feedstock under hydrothermal conditions. Physical and chemical properties of the resultant composite were analyzed. Batch adsorption experiments demonstrated that the adsorption could be completed within 1 h and the prepared composite possessed remarkably higher P adsorption capacity than the raw tobacco stalk. The experimental data obtained from kinetic and isotherm study more accurately agreed with the pseudo-second-order equation and the Freundlich model (R2 > 0.99), respectively. The maximum adsorption capacity calculated from the Langmuir model were 30.69, 31.42 and 41.16 mg P/g at 25, 35 and 45 °C, respectively. Mechanism analysis revealed that ion exchange, ligand exchange and electrostatic attraction contributed to the process. Results from this work indicate that TS-LDHs composite could be a promising and novel carbon-based phosphate adsorbent for wastewater treatment. © 2019

引用

共 44 条

[1]

APHA (American Public Health Association), Standard Methods for the Examination of Water and Wastewater, (2012)

[2]

Barca C., Gerente C., Meyer D., Chazarenc F., Andres Y., Phosphate removal from synthetic and real wastewater using steel slags produced in Europe, Water Res., 46, 7, pp. 2376-2384, (2012)

[3]

Biswas K., Gupta K., Goswami A., Ghosh U.C., Fluoride removal efficiency from aqueous solution by synthetic iron (III)–aluminum (III)–chromium (III) ternary mixed oxide, Desalination, 255, 1-3, pp. 44-51, (2010)

[4]

Bui T.H., Hong S.P., Yoon J., Development of nanoscale zirconium molybdate embedded anion exchange resin for selective removal of phosphate, Water Res., 134, pp. 22-31, (2018)

[5]

Das J., Patra B.S., Baliarsingh N., Parida K.M., Adsorption of phosphate by layered double hydroxides in aqueous solutions, Appl. Clay Sci., 32, 3-4, pp. 252-260, (2006)

[6]

Desmidt E., Ghyselbrecht K., Zhang Y., Pinoy L., Van der Bruggen B., Verstraete W., Meesschaert B., Global phosphorus scarcity and full-scale P-recovery techniques: a review, Crit. Rev. Environ. Sci. Technol., 45, 4, pp. 336-384, (2015)

[7]

Fang J., Zhan L., Ok Y.S., Gao B., Minireview of potential applications of hydrochar derived from hydrothermal carbonization of biomass, J. Ind. Eng. Chem., 57, pp. 15-21, (2018)

[8]

Ghosh R.K., Reddy D.D., Tobacco stem ash as an adsorbent for removal of methylene blue from aqueous solution: equilibrium, kinetics, and mechanism of adsorption, Water Air Soil Pollut., 224, 6, (2013)

[9]

Goh K.H., Lim T.T., Dong Z., Application of layered double hydroxides for removal of oxyanions: a review, Water Res., 42, 6-7, pp. 1343-1368, (2008)

[10]

Guo S., Dong X., Zhu C., Han Y., Ma F., Wu T., Pyrolysis behaviors and thermodynamics properties of hydrochar from bamboo (Phyllostachys heterocycla cv. pubescens) shoot shell, Bioresour. Technol., 233, pp. 92-98, (2017)

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