Investigation of thermal degradation kinetics and catalytic pyrolysis of industrial sludge produced from textile and leather industrial wastewater

Wahab M. A., Ates F., YILDIRIR E., Miskolczi N.

Biomass Conversion and Biorefinery, cilt.13, sa.12, ss.11187-11201, 2023 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 13 Sayı: 12
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1007/s13399-021-02183-5
  • Dergi Adı: Biomass Conversion and Biorefinery
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
  • Sayfa Sayıları: ss.11187-11201
  • Anahtar Kelimeler: Fast pyrolysis, GC/MS, Iso-conversional methods, Sludge, Thermo-gravimetric analysis
  • Uşak Üniversitesi Adresli: Evet

Özet

This paper elucidates catalytic and non-catalytic pyrolysis characteristics of sludge obtained from the biological treatment of textile and leather industrial wastewater. Iso-conversional model-free methods, such as Flynn–Wall–Ozawa (FWO), Kissinger–Akahira–Sunose (KAS) and Friedman, were employed to evaluate the kinetic and thermodynamic parameters. The Ea (activation energy) values of non-catalytic and catalytic pyrolysis with y-zeolite and activated alumina (Al2O3) were determined via KAS method to be in the range of 84.66–291.18, 73.12–197.17 and 84.66–217.44 kJ/mol, respectively, whereas similar trends were observed when the other two methods were used. Gas chromatography/mass spectrometer (GC/MS) analyses showed that the oil obtained from the non-catalytic procedure was rich in fatty acids, steroidal compounds and N-compounds. Activated alumina was effective in removing nitrogen-containing compounds from the oil while y-zeolite promoted deoxygenation and deacidification reactions and, as a result, the oil became rich in alkanes and alkenes which improved its quality as a fuel. Graphical abstract: [Figure not available: see fulltext.]