An innovative approach to a pressurized water scrubbing system with several packing materials for upgrading biogas to biomethane

Herdem H., ŞAHİN U., ÜLGEN A.

Process Safety and Environmental Protection, cilt.188, ss.538-548, 2024 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Derleme
  • Cilt numarası: 188
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1016/j.psep.2024.05.053
  • Dergi Adı: Process Safety and Environmental Protection
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Environment Index, Food Science & Technology Abstracts, Greenfile, INSPEC, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.538-548
  • Anahtar Kelimeler: Biofix, Biogas purification, Methane upgrading, Packed column, Water scrubbing technology
  • Erciyes Üniversitesi Adresli: Evet

Özet

This study evaluates the performance of Biofix, a new-generation packing material, compared to traditional ones like pall rings and multifil packing, in water scrubbing for biogas purification. Experiments explore the impact of pressure and interfacial area on methane enhancement, utilizing a minimum QL/QG ratio of 0.02, a short-packed height of 40 cm, and conducted at 20°C. Results indicate Biofix's superior mass transfer due to increased water-gas contact. Biofix shows higher carbon dioxide and hydrogen sulfide removal efficiencies compared to conventional materials. At 5 bars pressure, biofix achieves 28.3 % CH4 recovery values, 18.7 % CO2 concentration with 46.0 % removal efficiency and 95.6 % H2S removal efficiency. The study advocates for Biofix-packed water scrubbers to enhance surface area, showcasing superior performance over conventional materials. Notably, the difference in CH4 removal efficiency between Biofix and pall rings is 6.0 %, while it's 51.3 % between Biofix and 500BX. Additionally, Biofix is suggested to reduce energy consumption, offering a promising pathway for biogas upgrading while enhancing efficiency and environmental friendliness. The absorption of CO2 and H2S results in a decrease in the pH of the absorption water from 7.4 to 5.3.