Aeration costs in stirred-tank and bubble column bioreactors [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 666.3 Pottery
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2017
• Mô tả vật lý: Size: p. 161-166 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 263240
• Chủ đề: 1. 09 biomass fuels; 2. Aerobic fermentation; 3. Bioreactor design; 4. Capital cost; 5. Gas-liquid oxygen mass transfer

Tóm tắt

 To overcome knowledge gaps in the economics of large-scale aeration for production of commodity products, Aspen Plus is used to simulate steady-state oxygen delivery in both stirred-tank and bubble column bioreactors, using published engineering correlations for oxygen mass transfer as a function of aeration rate and power input, coupled with new equipment cost estimates developed in Aspen Capital Cost Estimator and validated against vendor quotations. Here, these simulations describe the cost efficiency of oxygen delivery as a function of oxygen uptake rate and vessel size, and show that capital and operating costs for oxygen delivery drop considerably moving from standard-size (200 m<
 sup>
 3<
 /sup>
 ) to world-class size (500 m<
 sup>
 3<
 /sup>
 ) reactors, but only marginally in further scaling up to hypothetically large (1000 m<
 sup>
 3<
 /sup>
 ) reactors. Finally, this analysis suggests bubble-column reactor systems can reduce overall costs for oxygen delivery by 10-20% relative to stirred tanks at low to moderate oxygen transfer rates up to 150 mmol/L-h.