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Effect of Adsorbent Dosage to Adsorbate Concentration Ratio on the Adsorption of Cd(II) on Coal Gangue

  • Zili Tang
  • Hui Wu
  • Qingbo Wen
  • Liming Hu
Conference paper
Part of the Environmental Science and Engineering book series (ESE)

Abstract

For the adsorption between the solid and liquid phases, the solid liquid ratio s/l and initial adsorbate concentration \( C_{0} \) are usually considered as the significant influence factors. The solid solute ratio s/a, i.e., the adsorbent dosage to adsorbate concentration ratio or the ratio of s/l to \( C_{0} \), has been proposed to be a new influence factor, and an empirical equation between the adsorption capacity and s/a has been developed to describe the adsorption characteristics of heavy metals on soil in previous studies. In the present study, the effect of s/a on the adsorption amount at equilibrium of coal gangue has examined by conducting a series of batch tests. For comparison, the influence of s/l and \( C_{0} \) were also investigated by the model fitting. The results indicate s/a could illustrate the effects of s/l and \( C_{0} \), and make it more succinctly to describe adsorption. Furthermore, the empirical equation was further verified by literature analysis, and it turned out to be generally applicable for various kinds of adsorbent and adsorbate not only heavy metal ions, but also organic matters. It’s possible to predict adsorption directly by using the empirical equation of s/a.

Keywords

Coal gangue Solid solute ratio The equilibrium adsorption amount An empirical equation 

References

  1. Wu H, Wen QB, Hu LM, Gong M, Tang ZL (2017a). Feasibility study on the application of coal gangue as landfill liner material. Waste Manag 63, 161–171CrossRefGoogle Scholar
  2. Wu H, Wen QB, Hu LM, Gong M (2017b). Effect of adsorbate concentration to adsorbent dosage ratio on the sorption of heavy metals on soils. American Society of Civil Engineers  https://doi.org/10.1061/(ASCE)EE.1943-7870.0001306CrossRefGoogle Scholar
  3. Yang YT, Gong M, Wen QB, Hu LM (2013) Experimental study on coal gangue applied as anti-seepage and anti-foulingmaterials. Chin J Geotech Eng 35:282–286Google Scholar
  4. Du YJ, Hayashi S (2006) A study on sorption properties of Cd2 + on Ariake clay for evaluating its potential use as a landfill barrier material. Appl Clay Sci 32:14–24CrossRefGoogle Scholar
  5. Zhang CX, Jiang YF, Zhou M (2014) Adsorption and influence factors of sodium pentachlorophenate on Northwestern loess. J Saf Environ 1009–6094Google Scholar
  6. Jiao N, Wang DS, Duan JM et al (2012) Adsorption of three organic dyes on modified diatomite. Acta Sci Circumst 32(6):1364–1369Google Scholar
  7. Zhan YH, Lin JW (2013) Adsorption of Congo red from aqueous solution on hydroxyapatite. Environ Sci 34:3143–3150Google Scholar
  8. Lang XK, Wang J, Li XS et al (2012). Effect of roasting modified bentonite on treating phenol wastewater. Journal of Qiqihar University, 1007-984X, 06-0047-03Google Scholar
  9. Guo WJ, Liang XF, Lin DS et al (2013) Adsorption of Cd2 + on biochar from aqueous solution. Environ Sci 34:3716–3721Google Scholar
  10. Glatstein DA, Francisca FM (2015) Influence of pH and ionic strength on Cd, Cu and Pb removal from water by adsorption in Na-bentonite. Appl Clay Sci 118:61–67CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.State Key Laboratory of Hydro-Science and Engineering, Department of Hydraulic EngineeringTsinghua UniversityBeijingChina

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