Improving anaerobic conversion of pulp mill secondary sludge to biogas by pretreatment
Source abstract
Abstract
We examined the effectiveness of thermal, caustic, and sonication pretreatment methods in improving anaerobic conversion to biogas of secondary sludge samples obtained from a kraft mill and a sulfite mill. All three methods improved the anaerobic digestion rate and the biogas yield of the sludge samples. Thermal pretreatment was the most effective, followed closely by caustic pretreatment, and sonication the least. The total biogas productions per unit of chemical oxygen demand of sulfite sludge and kraft sludge samples were respectively 1.2 and 3 times higher with pretreatments than without. Also, the biogas production from the untreated sulfite mill sludge was 4 times higher than that from the untreated kraft mill sludge.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Wastewater Treatment and Nitrogen Removal · Anaerobic Digestion and Biogas Production · Phosphorus and nutrient management
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (16)
Show source-provided references
1. Scott, G. M. and Smith, A. TAPPI 1995 International Environmental Conference Proceedings, vol. 1, TAPPI Press, Atlanta, GA, USA, p. 269.
2. Puhakka, J.A., Bioresource Tech. 39: 61(1992).10.1016/0960-8524(92)90057-5 ↗
3. Mahmood, T. and Elliot, A., Water Res. 40: 2093(2006).10.1016/j.watres.2006.04.001 ↗
4. Rittmann, B.E. and McCarty, P.L., Environmental Biotechnology: Principles and Applications, McGraw-Hill, New York, NY, USA, 2001.
5. Kleerebezem, R. and Macarie, H., Chem. Eng. 110: 56(2003).
6. La Motta, E.J., Silva, E., Bustillos, A., Padrón, H., et al., J. Environ. Eng. 133: 397(2007).10.1061/(ASCE)0733-9372(2007)133:4(397) ↗
7. Eastman, J.A. and Ferguson, J.F., J. Water Pollution Control Fed. 53: 352(1981).
8. Wood, N., “Pretreatment of pulp mill wastewater treatment residue to improve their anaerobic digestion,” Master’s thesis, University of Toronto, Toronto, ON, Canada, 2008.
9. Wood, N., Tran, H.N., and Master, E., Bioresource Tech. 100(3): 5729(2009).10.1016/j.biortech.2009.06.062 ↗
10. American Public Health Association, Standard Methods for the Examination of Water and Wastewater, 20th edn., American Public Health Association, Washington, DC, USA, 1998.
11. Raunkjaer, K., Hvitved-Jacobsen, T., and Nielsen, H., Water Res. 28: 251(1994).10.1016/0043-1354(94)90261-5 ↗
12. Peterson, G.L., Anal. Biochem. 83: 346(1977).10.1016/0003-2697(77)90043-4 ↗
13. Frølund, B., Griebe, T., and Nielsen, P.H. Applied Microbiol. Biotech. 43: 755(1995).10.1007/BF00164784 ↗
14. Owen, W.F., Stuckey, D.C., Healy, J.B., et al., Water Res. 13: 485(1979).10.1016/0043-1354(79)90043-5 ↗
15. Nielsen, P.H. and Keiding, K., Water Res. 32: 313(1998).10.1016/S0043-1354(97)00235-2 ↗
16. Park, C., Abu-Orf, M.M., et al. Water Environ. Res, 78: 59 (2006).10.2175/106143005X84521 ↗