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Hong Kong produces 1,300 tons of sludge every day for disposal. The sludge dewatering prior to incineration is a costly process that uses commercial flocculant. In this project, we have developed a biogenic flocculant for sludge dewatering and the results are presented in our earlier report. Now we are working to commercialize the biogenic flocculants and got two patents. Currently discussion with Drainage Services Department (DSD) is in progress and hope to demonstrate this feasibility in the coming years.
Outcomes from this project were filed as patent and published.
Murugesan, K., Selvam, A., and Wong, J.W.C. Biotechnological approaches in sludge dewatering. In: Current Developments in Biotechnology and Bioengineering, Book 5: Solid Waste Management, (Eds.) Wong, J.W.C., Tyagi, R.D., and Pandey, A. Elsevier Publications, Chapter 12, 2016.
Wong, J.W.C., Murugesan, K., Yu, S.M., Kurade, M.B., Selvam, A. 2016. Improved dewatering of CEPT sludge by biogenic flocculant from Acidithiobacillus ferrooxidans. Water Science and Technology, 73(4), 843-848. [DOI: 10.2166/wst.2015.557; ISSN: 0273-1223 (Print), IWA publishers, IF: 1.064]
Wong, J.W.C., Murugesan, K., Selvam, A., Ravindran, B., Kurade, M.B., Yu, S.-M. 2016. Dewatering of saline sewage sludge using iron-oxidizing bacteria: Effect of substrate concentration. Bioresource Technology, 213, 31-38. [DOI:10.1016/j.biortech.2016.03.118; ISSN: 0960-8524; Elsevier; IF: 4.917].
Murugesan, K., Ravindran, B., Selvam, A., Kurade, M.B., Yu, S.-M., Wong, J.W.C. 2016. Fate of extracellular polymeric substances of anaerobically digested sewage sludge during pre-dewatering conditioning with Acidithiobacillus ferrooxidans culture. Bioresource Technology, 217, 173-178. [DOI:10.1016/j.biortech.2016.03.081; ISSN: 0960-8524; Elsevier; IF: 4.917].
Kurade, M.B., Murugesan, K., Selvam, A., Yu, S.-M., Wong, J.W.C. 2016. Sludge conditioning using biogenic flocculant produced by Acidithiobacillus ferrooxidans for enhancement in dewaterability. Bioresource Technology, 217, 179-185. [DOI:10.1016/j.biortech.2016.02.113; ISSN: 0960-8524; Elsevier; IF: 4.917].
Karthikeyan, R., Selvam, A., Cheng, K.Y., Wong, J.W.C. 2016. Influence of ionic conductivity in bioelectricity production from saline domestic sewage sludge in microbial fuel cells. Bioresource Technology, 200, 845-852 [DOI: 10.1016/j.biortech.2015.10.101; ISSN: 0960-8524; Elsevier; IF: 4.917].
Wong, J.W.C., Murugesan, K., Yu, S.M., Kurade, M., Selvam, A. 2016. Improved dewatering of CEPT sludge by biogenic flocculant from Acidithiobacillus ferrooxidans. Water Science and Technology, 73 (4), 843-848 [DOI: 10.2166/wst.2015.557; ISSN: 0273-1223; IWA; IF: 1.064].
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