Kinetics and equilibrium studies of phosphate removal from aqueous solution by calcium silicate hydrate synthesized from electrolytic manganese residue

被引：22
作者：
Li C. [1 ]
Yu Y. [1 ]
Li Q. [1 ]
Zhong H. [2 ]
Wang S. [3 ]
机构：
[1] College of Safety Science and Engineering, Nanjing Tech University
[2] College of Chemistry and Chemical Engineering, Central South University
来源：
Adsorption Science and Technology | 2019年 / 37卷 / 7-8期
基金：
中国博士后科学基金;
关键词：
adsorption; calcium silicate hydrate; Electrolytic manganese residue; phosphate; thermodynamics;
D O I：
10.1177/0263617419860620
中图分类号：
学科分类号：
摘要：
The calcium silicate hydrate synthesized from electrolytic manganese residue was investigated as adsorbents to remove the phosphate from aqueous solutions. The effects of different experimental parameters, including contact time, initial phosphate concentration, solution pH, and temperature on the phosphate adsorption were investigated. The results showed that the phosphate adsorption was highly pH-dependent, with removal being more efficient under the pH range of 10.0–11.0. The Freundlich and Langmuir models were used to simulate the sorption equilibrium, and the results indicate that the adsorption data fitted well to the Langmuir model with which the maximum phosphate adsorption capacity was estimated to be 65.79–85.47 mg/g at 25–35°C. Meanwhile, the kinetic data confirmed that the sorption of phosphorus onto electrolytic manganese residue–calcium silicate hydrate can be best described by the pseudo-second-order kinetic model, suggesting that the adsorption process might be chemical sorption. Furthermore, thermodynamic studies illustrated that the adsorption process was endothermic and spontaneous in nature. © The Author(s) 2019.
引用
收藏
页码：547 / 565
页数：18
相关论文
共 43 条
  • [1] Agyei N.M., Strydom C.A., Potgieter J.H., An investigation of phosphate ion adsorption from aqueous solution by fly ash and slag, Cement and Concrete Research, 30, 5, pp. 823-826, (2000)
  • [2] Agyei N.M., Strydom C.A., Potgieter J.H., The removal of phosphate ions from aqueous solution by fly ash, slag, ordinary Portland cement and related blends, Cement and Concrete Research, 32, 12, pp. 1889-1897, (2002)
  • [3] Biswas B.K., Inoue K., Ghimire K.N., Et al., Removal and recovery of phosphorus from water by means of adsorption onto orange waste gel loaded with zirconium, Bioresource Technology, 99, pp. 8685-8690, (2008)
  • [4] Cui X., Dai X., Khan K.Y., Et al., Removal of phosphate from aqueous solution using magnesium-alginate/chitosan modified biochar microspheres derived from Thalia dealbata, Bioresource Technology, 218, pp. 1123-1132, (2016)
  • [5] Cui G., Liu M., Chen Y., Et al., Synthesis of a ferric hydroxide-coated cellulose nanofiber hybrid for effective removal of phosphate from wastewater, Carbohydrate Polymers, 154, pp. 40-47, (2016)
  • [6] Cheung K.C., Venkitachalam T.H., Improving phosphate removal of sand infiltration system using alkaline fly ash, Chemosphere, 41, pp. 243-249, (2000)
  • [7] Dai J., Yang H., Yan H., Et al., Phosphate adsorption from aqueous solutions by disused adsorbents: chitosan hydrogel beads after the removal of copper (II), Chemical Engineering Journal, 166, 3, pp. 970-977, (2011)
  • [8] Guo T., Yang H., Liu Q., Et al., Adsorptive removal of phosphate from aqueous solutions using different types of red mud, Water Science and Technology, 2017, 2, pp. 570-577, (2018)
  • [9] He Y., Lin H., Dong Y., Et al., Simultaneous removal of ammonium and phosphate by alkaline-activated and lanthanum-impregnated zeolite, Chemosphere, 164, pp. 387-395, (2016)
  • [10] Hagelstein K., Globally sustainable manganese metal production and use, Journal of Environmental Management, 90, 12, pp. 3736-3740, (2009)
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