Acid Endurance and Sorption of Zn²⁺ of Anaerobic Granular Sludge Acclimated by Flue Gas Pretreatment Wastewater

Abstract:

With the aim to use anaerobic granular sludge, the methanogenic activity inhibition and recovery of anaerobic granular sludge from an industrial anaerobic reactor (s1) were investigated by measuring the methane volume at low pH. A lab-scale upflow anaerobic sludge blanket (UASB) reactor was inoculated with s1.s1 was used to remove Zn2+ in wastewater. The results show that activity of s1 is similar when the pH value is 6.5 to 7.0. The methane volume is obviously decreased when the pH value is 6.0. The activity is completely inhibited when the pH value is 4.5. The activity is fully recovered when the pH is above 6.5 and hardly recovers when the pH fell to 4.5. The main Zn2+ removal mechanism is chemical adsorption.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 182-186
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.182
• Online since: January 2013
• Authors: Juan Wang, Qin Zhong
• Keywords: Acid Endurance, Adsorption, Anaerobic Granular Sludge, Biological Flue Gas Desulphurization, Upflow Anaerobic Sludge Blanket (UASB), Zn²⁺

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