Preparation and Property of a Bio-Char from De-Watered Sludge and Beer Lees

Abstract:

De-watered sludge (DS) and beer lees (BL) are mixed to be co-pyrolyzed into bio-char in this work. Bio-char was produced by heating at carbonization temperatures (550°C) with the ratio of DS to BL (1:1, 1.5:1, 2:1 and 4:1). Yield, ash content, FTIR, zeta potential and SEM of the bio-char were investigated. With temperature increasing, yield (39.4-57.3%, wt.%) decreased, while ash content (33.9-56.4%) increased in a high DS ratio, changing of the functional groups on bio-char (e.g., C=C, aromatic ring) in the co-pyrolysis process improve adsorption capacity for pollutant. Moreover, negative potentials (-10.583~-35.563 mV) of bio-char can provide breeding sites for microorganism and electrostatic attraction for heavy metal ions. The result showed this conversion could become a promising approach to dispose pollution problems, simultaneously, for the environmental remediation.

• Periodical: Advanced Materials Research (Volumes 881-883)
• Pages: 125-130
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.881-883.125
• Online since: January 2014
• Authors: Yin Xin Zhang, Hui Liu, Yi Ma*, Ji Shi Zhang
• Keywords: Beer Lees, Bio-char, De-Watered Sludge, FTIR, Zeta Potential

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