Energy-efficient ozonation of textile wastewater in a tubular jet reactor: mass transfer, kinetics, and process performance
Chemical Papers, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2026
- Doi Numarası: 10.1007/s11696-026-05571-1
- Dergi Adı: Chemical Papers
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chemical Abstracts Core, Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Anahtar Kelimeler: Decolorization, Methyl orange, Ozonation, Ozone mass transfer, Tubular jet reactor
- Atatürk Üniversitesi Adresli: Evet
Özet
Ozonation is a promising advanced oxidation process for textile wastewater treatment; however, its efficiency is limited by poor ozone mass transfer. In this study, ozone mass transfer and process performance were investigated in a semi-batch tubular jet reactor (TJR). Increasing the liquid circulation rate from 8 to 80 L min− 1 enhanced the volumetric mass transfer coefficient (kLa) from 0.262 to 0.702 min− 1. The effects of ozone gas concentration and hydrodynamic conditions on the removal of methyl orange (MO), chemical oxygen demand (COD), and total organic carbon (TOC) were evaluated. Ozone gas concentration significantly influenced all removal efficiencies, whereas liquid circulation rate mainly affected COD and TOC removal. The removal efficiencies followed the order MO > COD > TOC, with maximum removals of 98%, 86%, and 68%, respectively. The degradation of MO and COD followed pseudo-first-order kinetics (PFO). Energy efficiency was assessed using electrical energy per order (EE/O) and specific energy consumption (SEC). Considering treatment performance and energy demand, a liquid circulation rate of 40 L min− 1 was identified as the optimum operating condition at an ozone gas concentration of 12.97 g m− 3, achieving 77% COD removal at 180.42 Wh gCOD− 1. The results demonstrate a trade-off between treatment efficiency and energy demand, highlighting the importance of energy-efficient and sustainable wastewater treatment strategies.