Pressurised Dewatering of Sugarcane Press Mud for Logistical Transport Efficiency and Industrial Reuse
Tóm tắt
Press mud, a by-product from sugar milling, has agronomic soil input value, but its transport distance from the mill site is limited by its high moisture content (75–80%). This results in over-application close to the mill, concentrating nutrient sources from a wider harvest region, and has potential for environmental harm. Moisture reduction methods have traditionally focussed on centrifuge techniques, but pressurised systems have been shown to have benefit in other waste industries. This work investigates a press-based system for the dewatering of press mud with sequential loading. Subsequently, the solid and filtrate components were assessed for agricultural land application value, with the solid further assessed for livestock feed value. The observed weight reduction was between 20 and 50%, which increased the viability of land application. Results suggest a combination of mill by-products (PM, ash and bagacillo) could result in a product that is more suitable for dewatering. The separated solids had potential for both land application and livestock feed, while the filtrate nutrient value was observed as low.
Tài liệu tham khảo
Di Bella, L.P., R.J. Conventry, M. Sefton, P.W. Moody, M. Hanks, J.K Stringer, and R.E. Kerkwyk. 2009. The use of geo-referenced soil test data in the Herbert district. In Proceedings of the Australian Society of Sugar Cane Technologists, vol. 31, 296–301.
Gupta, V.K., P.J.M. Carrott, M.M.L. Ribeiro Carrott, and Suhas. 2009. Low-cost adsorbents: Growing approach to wastewater treatment—A review. Critical Reviews in Environmental Science and Technology 39: 783–842.
Gupta, V.K., and I. Ali. 2004. Removal of lead and chromium from wastewater using bagasse fly ash—A sugar industry waste. Journal of Colloid and Interface Science 271: 321–328.
Gupta, V.K., C. Jain, I. Ali, S. Chandra, and S. Agarwal. 2002. Removal of lindane and malathion from wastewater using bagasse fly ash—A sugar industry waste. Water Research 36: 2483–2490.
Gupta, V.K., D. Mohan, and S. Sharma. 1998. Removal of lead from wastewater using bagasse fly ash—A sugar industry waste material. Separation Science and Technology 33: 1331–1343.
Hillel, D. 1998. Environmental soil physics: Fundamentals, applications, and environmental considerations. San Diago, CA: Academic Press.
Hjorth, M., K.V. Christensen, M.L. Christensen, and S.G. Sommer. 2010. Solid–liquid separation of animal slurry in theory and practice. A review. Agronomy for Sustainable Development 30: 153–180.
IBM. 2009. PASW Statistics 18. Chicago: SPSS Inc.
Jury, W.A., and R. Horton. 2004. Soil physics. New York, NY: Wiley.
Mehlich, A. 1984. Mehlich 3 soil test extractant: A modification of Mehlich 2 extractant. Communications in Soil Science and Plant Analysis 15: 1409–1416.
Møller, H.B., I. Lund, and S.G. Sommer. 2000. Solid–liquid separation of livestock slurry: Efficiency and cost. Bioresource Technology 74: 223–229.
Ostatek-Boczynski, Z.A., and P. Lee-Steere. 2012. Evaluation of Mehlich 3 as a universal nutrient extractant for Australian sugarcane soils. Communications in Soil Science and Plant Analysis 43: 623–630.
Plaza, F., A. Booth, J. Xing, and G. Kent. 2011. Centrifuging rotary vacuum filter mud at Tully Mill. In Proceedings of the Australian Society of Sugar Cane Technologists, vol. 33.
Qureshi, M., S. Qureshi, and M. Wegener. 2007. Economic implications of alternative mill mud management options in the Australian sugar industry. Agricultural Economics 36: 113–122.
Qureshi, M., M. Wegener, and T. Mallawaarachchi. 2001. The economics of sugar mill waste management in the Australian sugar industry: Mill mud case study. In 45th annual conference of the Australian Agricultural and Resource Economics Society, Adelaide, South Australia.
Rainey, T.J., O.P. Thaval, and D.W. Rackemann. 2014. Developments in mud filtration technology in the sugarcane industry. In Sugarcane: Production, consumption and agricultural management system, ed. E. Webb, 236–292, New York.
Rayment, G., and D. Lyons. 2011. Soil chemical methods—Australasia. Collingwood, VIC: CSIRO Publishing.
Rengasamy, P., and A. Marchuk. 2011. Cation ratio of soil structural stability (CROSS). Soil Research 49: 280–285.
Srivastava, S., V.K. Gupta, N. Johri, and D. Mohan. 1995a. Removal of 2, 4, 6-trinitrophenol using bagasse fly ash: A sugar industry waste material. Indian Journal of Chemical Technology 2: 333–336.
Srivastava, S., V.K. Gupta, I. Yadav, and D. Mohan. 1995b. Removal of 2, 4-dinitrophenol using bagasse fly ash—A sugar industry waste material. Fresenius Environmental Bulletin 4: 550–557.
Steindl, R. 2001. Reducing the specific cake resistance to reduce the pol loss in filter cake. In Proceedings of the International Society of Sugar Cane Technologists, vol. 24, 392–394.
Steindl, R., T. Rainey, and F. Plaza. 2010. Low moisture mud from solid bowl decanters. In Proceedings of the International Society of Sugar Cane Technologists, vol. 27.
Svarovsky, L. 1985. Solid–liquid separation process and technology. In Handbook of powder technology, ed. J. Williams and T. Allen, 18–22. Bradford: Elsevier.
Vesilind, P.A. 1994. The role of water in sludge dewatering. Water Environment Research 66: 4–11.
Whalley, T.G. 1949. Bagacillo in rotary filtration. In Proceedings of the Queensland Society of Sugar Cane, vol. 16, 109–120.