Effect of Zeolite on the Methane Production from Chicken Manure Leachate

Apostolos Spyridonidis, Ioanna A. Vasiliadou and Katerina Stamatelatou
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Apostolos Spyridonidis: Department of Environmental Engineering, Democritus University of Thrace, GR 67132 Xanthi, Greece
Ioanna A. Vasiliadou: Department of Environmental Engineering, Democritus University of Thrace, GR 67132 Xanthi, Greece
Katerina Stamatelatou: Department of Environmental Engineering, Democritus University of Thrace, GR 67132 Xanthi, Greece

Sustainability, 2022, vol. 14, issue 4, 1-14

Abstract: This study demonstrates the leachate characteristics derived from bench-scale leach-bed reactors (LBRs) filled with chicken manure (CM) and zeolite. Zeolite was used to maintain the necessary porosity for the leaching process and to adsorb ammonia. Fresh water was added for leachate production and removed daily, in order to estimate the readily leachable organic and nitrogen matter of the CM. Tests were conducted at two ratios of zeolite to bed (10% and 3.5% v/v CM bed ). Other operating parameters studied were the amount of water added in the LBRs, the leachate recirculation rate, and the hydraulic retention time (HRT). A control LBR with river pebbles at a similar size and ratio (10% v/v ) with zeolite was also studied. Some experiments were repeated with CM, which had different characteristics. Compared to the control test, the LBR with zeolite at 10% v/v yielded leachate with less NH 3 and a higher biochemical methane potential (BMP). However, free ΝH 3 in the control experiment was below the inhibition threshold, proving that zeolite contributes to the higher BMP of leachate, and that this effect is not only due to NH 3 adsorption.

Keywords: leach bed reactor; zeolite; ammonia; chicken manure (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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