The effect of various thermochemical methods on the production of biochar and removal of 2-naphthol orange from wastewater

Temur Ergan B., Aydin E. S., Gengeç E.

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, cilt.99, sa.1, ss.81-91, 2024 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 99 Sayı: 1
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1002/jctb.7513
  • Dergi Adı: JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Computer & Applied Sciences, Food Science & Technology Abstracts, INSPEC, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.81-91
  • Anahtar Kelimeler: 2-naphthol orange, adsorption kinetics, biochar adsorbent, thermochemical processes, thermodynamic, waste biomass
  • Kocaeli Üniversitesi Adresli: Evet

Özet

BACKGROUNDThermochemical conversion methods are essential processes frequently used in the production of biochar and the type chosen affects the properties of biochar. In this study, 2-naphthol orange was removed from synthetic wastewater using biochar adsorbents produced from pelletized furniture sawdust by thermochemical techniques (torrefaction, pyrolysis and gasification) at various durations (0.5-5 h) and temperatures (200-900 degrees C).RESULTSThe adsorbent produced via torrefaction at 200 degrees C in 1 h exhibited the best removal performance. For furniture waste biochar (FWB), the optimum conditions for 2-naphthol orange options were initial concentration 35 mg L-1, pH 2.0, contact duration 2 h, agitation speed 200 rpm, temperature 30 degrees C, 1.0 g L-1 of biochar and - 50-mesh biochar size. The Langmuir isotherm and Pseudo-second-order models showed the highest coefficients of determination (R2 = 0.9947 and 0.9978, respectively). The terms of qm (mg g-1) and KL were found to be 230.45 and 0.28, respectively, from the Langmuir isotherm. Conversely, the terms of qe (mg g-1) and k2 [g (mg.min)-1] were found to be 29.27 and 0.00486, respectively, from the pseudo-second-order model. According to the long-stability experiment, the selected adsorbent of 200-1 (biochar from torrefaction) remained more stable after 10 cycles of adsorption.CONCLUSIONIt was found that the torrefaction process provides significant advantages owing to the removal efficiencies of 2-naphthol orange dye and the fact that biochar production is easier and more economical at low temperatures. (c) 2023 Society of Chemical Industry.