Preparation and Characterization of Sewage Sludge-Based Activated Carbon

Abstract:

In this study, a sewage sludge-base activated carbon (SSAC) was prepared by means of ZnCl2 chemical activation-pyrolysis-carbonization. Different factors such as activated temperature, activators, additives, sludge/activation solution ratio, activated time and other factors which affecting SSAC characteristics were studied to obtain the optimal preparation conditions. The result shows that when using 3mol/L zinc chloride with the ratio of zinc chloride to sulfuric acid as 10:1(v/v), activated at 550°C with the ratio of sludge to activation solution as 1:4(w/v) for 1 hour of pyrolysis and the rate of N2 was set at 0.5L/min, the BET surface area, total pore volume and average pore diameter of the SSAC was 469.80m2/g, 0.16cm3/g and 2.60nm respectively. Using SSAC to treat simulating wastewater containing 100mg(Ni2+)/L, the removal rate of Ni2+ was 20.59% with the adsorption capacity of 10.57mg/g. When the pH>10.5 the removal efficiency approached 100%.

• Periodical: Advanced Materials Research (Volume 599)
• Pages: 614-617
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.599.614
• Online since: November 2012
• Authors: Zi Jun Tang, Chao Ping Cen, Ping Fang, Yang Ming Liang
• Keywords: Characterization, Ni²⁺ Adsorption, Preparation, Sewage Sludge-Based Activated Carbon

References

[1] J.Wether, T. Ogada: Energy Combust.Sci. Vol. 25(1999), p.55.

[2] S.L. Lee: Bioresour.Technol. Vol.64(1998), p.217.

[3] G.Gasco, C.G. Blanco, F. Guerrero: J. Anal. Appl. Pyrolysis. Vol.74 (2005), p.413.

[4] W.H.Li, Q.Y. Yue, B.Y. Gao: Chem. Eng.J. Vol.171 (2011), p.320.