• OpenAccess
  • Effect of Alkali Treatment on Heavy Metals Adsorption Capacity of Sewage Sludge  [EPPH 2015]
  • DOI: 10.4236/gep.2015.32006   PP.33 - 39
  • Author(s)
  • Jianlong Hu, Xiaosong Yang, Linan Shao, Xuwen He, Kunkuo Men
  • Sewage sludge is the promising raw material for biosorbent preparation. In this work, we evaluated the heavy metals adsorption characteristics of alkali treated sewage sludge (ATSS) by equilibrium studies. The adsorption isotherms were fitted with Langmuir and Freundlich models. Comparing with untreated sewage sludge, the total adsorption capacity (qm) of ATSS (prepared with 0.125 mol/L NaOH) for Cd, Pb, Ni, increased by 0.51, 0.70 and 0.32 mmol/g, respectively. When the NaOH concentration for ATSS preparation increased from 0.125 mol/L to 0.25 mol/L, the qm of ATSS for Pb decreased from 1.05 mmol/g to 0.84 mmol/g. However, when the NaOH concentration increased from 0.25 mol/L to 7.5 mol/L, it showed increasing trend. According to the IR spectra data, the adsorption effect of biosorbent for heavy metals was mainly due to the complexation of -N-H groups and -COOH groups.

  • Sewage Sludge, Alkali Treatment, Heavy Metals, Adsorption
  • References
  • [1]
    Apples, L., Baeyens, J., Degreve, J. and Dewil, R. (2008) Principles and Potential of the Anaerobic Digestion of Waste-Activated Sludge. Progress in Energy and Combustion Science, 34, 755-781.
    Li, W.H., Yue, Q.Y., Gao, B.Y., Wang, X.J., Qi, Y.F., Zhao, Y.Q. and Li, Y.J. (2011) Preparation of Sludge-Based Activated Carbon Made from Paper Mill Sewage Sludge by Steam Activation for Dye Wastewater Treatment. Desalination, 278, 179-185.
    Gascó, G., Méndez, A. and Gascó, J.M. (2005) Preparation of Carbon-Based Adsorbents from Sewage Sludge Pyrolysis to Remove Metals from Water. Desalination, 180, 245-251.
    Otero, M., Rozada, F., Morán, A., Calvo, L.F. and García, A.I. (2009) Removal of Heavy Metals from Aqueous Solution by Sewage Sludge Based Sorbents: Competitive Effects. Desalination, 239, 46-57.
    Veglio, F. and Beolchini, F. (1997) Removal of Metals by Biosorption: A Review. Hydrometallurgy, 44, 301-316.
    Kim, D.W., Cha, D.K., Wang, J. and Huang, C.P. (2002) Heavy Metal Removal by Activated Sludge: Influence of Nocardia amarae. Chemosphere, 46, 137-142.
    Laurent, J., Casellas, M. and Dagot, C. (2009) Heavy Metals Uptake by Sonicated Activated Sludge: Relation with Floc Surface Properties. Journal of Hazardous Materials, 162, 652-660.
    ?zbelge, T.A., ?zbelge, H.A. and Tursun, M. (2005) Effects of Hydraulic Residence Time on Metal Uptake by Activated Sludge. Chemical Engineering and Processing, 44, 23-32.
    Arican, B., Gokcay, C.F. and Yetis, U. (2002) Mechanistics of Nickel Sorption by Activated Sludge. Process Biochemistry, 37, 1307-1315.
    Yuncu, B., Sanin, F.D. and Yetis, U. (2006) An Investigation of Heavy Metal Biosorption in Relation to C/N Ratio of Activated Sludge. Journal of Hazardous Materials, 137, 990-997.
    Wang, J., Huang, C.P., Allen, H.E., Poesponegoro, I., Poesponegoro, H. and Takiyama, L.R. (1999) Effects of Dissolved Organic Matter and pH on Heavy Metal Uptake by Sludge Particulates Exemplified by Copper(II) and Nickel(II): Three-Variable Model. Water Environment Research, 71, 139-147.
    Laurent, J., Casellas, M., Carrere, H. and Dagot, C. (2011) Effect of Thermal Hydrolysis on Activated Sludge Solubilization, Surface Properties and Heavy Metals Biosorption. Chemi-cal Engineering Journal, 166, 842-849.
    Vaughan, T., Seo, C.W. and Marshall, W.E. (2001) Removal of Selected Metal Ions from Aqueous Solution Using Treated Corncobs. Bioresource Technology, 78, 133-139.
    Li, H., Jin, Y.Y., Mahar, R.B., Wang, Z.Y. and Nie, Y.F. (2008) Effects and Model of Alkaline Waste Activated Sludge Treatment. Bioresource Technology, 99, 5140-5144.
    Dogan, I. and Dilek Sanin, F. (2009) Alkaline Solubilization and Microwave Irradiation as a Combined Sludge Disintegration and Minimization Method. Water Research, 43, 2139-2148.
    Wilson, C.A. and Novak, J.T. (2009) Hydrolysis of Macromolecular Components of Primary and Secondary Wastewater Sludge by Thermal Hydrolytic Pretreatment. Water Research, 43, 4489-4498.
    Lin, J.G., Ma, Y.S. and Huang, C.C. (1998) Alkaline Hydrolysis of the Sludge Generated from a High-Strength, Nitrogenous-Wastewater Biological-Treatment Process. Bioresource Technology, 65, 35-42.
    Garcia Becerra, F.Y., Acosta, E.J. and Grant Allen, D. (2010) Alkaline Extraction of Wastewater Activated Sludge Biosolids. Bioresource Technology, 101, 6972-6980.
    Liu, H. and Fang, H.H.P. (2002) Extraction of Extracellular Polymeric Substances(EPS) of Sludge. Journal of Biotechnology, 95, 249-256.
    Sheeng, G. and Yu, Z. (2005) Extraction of Extracellular Polymeric Substances from the Photosynthetic Bacterium Rhodopseudomonas acidophila. Applied Microbiology and Biotechnology, 67, 125-130.
    Laurent, J., Pieera, M., Caasellas, M. and Dagot, C. (2009) Fate of Cadmium in Activated Sludge after Changing Its Physicochemical Properties by Thermal Treatment. Chemosphere, 77, 771-777.
    Comte, S., Guibaud, G. and Baudu, M. (2008) Biosorption Properties of Extracellular Polymeric Substances (EPS) towards Cd, Cu and Pb for Different pH Values. Journal of Hazardous Materials, 151, 185-193.
    Reddad, Z.C., Gerente, C., Aandres, Y. and Cloirec, P.L. (2002) Adsorption of Several Metal Ions onto a Low-Cost Biosorbent: Kinetic and Equilibrium Studies. Environmental Science & Technology, 36, 2067-2073.
    Wang, X.J., Xia, S.Q., Chen, L., Zhao, J.F., Chovelon, J.M. and Nicole, J.R. (2006) Biosorption of Cadmium(II) and Lead(II) Ions from Aqueous Solutions onto Dried Activated Sludge. Journal of Environmental Sciences, 18, 840-844.
    McSwain, B.S., Irvine, R.L., Hausner, M. and Wilderer, P.A. (2005) Composition and Distribution of Extracellular Polymeric Substances in Aerobic Flocs and Granular Sludge. Applied and Environmental Microbiology, 71, 1051-1057.
    Brown, M.J. and Lester, J.N. (1980) Comparison of Bacterial Extracellular Polymer Extraction Methods. Applied and Environmental Microbiology, 40, 179-185.

Engineering Information Institute is the member of/source content provider to