In-situ pelletization of campus biomass residues: Case study for Akdeniz University

Yılmaz H., ÇANAKCI M., TOPAKCI M., KARAYEL D., Yiğit M., ORTAÇEŞME D.

Renewable Energy, cilt.212, ss.972-983, 2023 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 212
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1016/j.renene.2023.05.097
  • Dergi Adı: Renewable Energy
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Communication Abstracts, Compendex, Environment Index, Geobase, Greenfile, Index Islamicus, INSPEC, Pollution Abstracts, Public Affairs Index, Veterinary Science Database, DIALNET, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.972-983
  • Anahtar Kelimeler: Fuel value index, Herbaceous, Net energy density, Woody, Zero waste
  • Akdeniz Üniversitesi Adresli: Evet

Özet

The fact that regular residues from the university campus green areas do not require a supply organization ensures the applicability of the in-situ pelletizing concept. In this study, woody, herbaceous and mixed biomass residues that occur at regular intervals from campus green areas were pelleted. Pelletizing behaviors and energy consumptions were examined. In addition, physical indicators of pellets and energy equivalents in bulk form were compared. The energy consumption trends were directly proportional to the geometric mean diameter of the particles originating from woody/herbaceous structure. Herbaceous biomass showed easy flow characteristics and stable pelletizing process was ensured, while woody biomass with coarse and hard particles caused the pelletizing unit motor to be overloaded at short intervals. The highest specific energy consumption in pelletizing in woody residues was calculated as 206 kWh t−1, and lowest in herbaceous residues as 71 kWh t−1. Significant negative features of herbaceous pellets were low bulk density (616 kg m−3), high moisture content (10.64%), low net energy density (9.7 GJ m−3) and low fuel value index (65.94). In contrast, woody pellets have high storage efficiency (663–722 kg m−3), low moisture content (3–4%), high net energy density (12.3–13.2 GJ m−3) and high fuel value index (651–922).