Methane Oxidation In Water-Spreading And Compost Biofilters  

Oleh:

Powelson, David K. ; Chanton, Jeffery ; Abichou, Tarek ; Morales, Jose

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Waste Management & Research vol. 24 no. 6 (Dec. 2006), page 528-536.
Topik: Biofilter; methane; oxidation; landfill; wmr 962–6
Fulltext: 528.pdf (487.5KB)

Isi artikel

This study evaluated two biofilter designs to mitigate methane emissions from landfill vents. Water-spreading biofilters were designed to use the capillarity of coarse sand overlain by a finer sand to increase the active depth for methane oxidation. Compost biofilters consisted of 238-L barrels containing a 1 : 1 mixture (by volume) of compost to expanded polystyrene pellets. Two replicates of each type of biofilter were tested at an outdoor facility. Gas inflow consisted of an approximately 1 : 1 mixture (by volume) of CH4 and CO2. Methane output rates (Jout; g m–2 day–1) were measured using the static chamber technique and the Pedersen et al. (2001) diffusion model. Methane oxidation rate (Jox; g m–2 day–1) and fraction of methane oxidized (fox) were determined by mass balance. For methane inflow rates (Jin) between 250 and 500 g m–2 day–1, the compost biofilter Jox, 242 g m–2 day–1, was not significantly different (P = 0.0647) than the water-spreading biofilter Jox, 203 g m–2 day–1; and the compost fox, 69%, was not significantly different (P = 0.7354) than water-spreading fox, 63%. The water-spreading biofilter was shown to generally perform as well as the compost biofilter, and it may be easier to implement at a landfill and require less maintenance.

Opini Anda

Klik untuk menuliskan opini Anda tentang koleksi ini!

Kembali