Details

Autor(en) / Beteiligte

• Zhang, Yonghao
• Song, Yating
• Liu, Liu
• Zhang, Jie
• Zhang, Zhaoyi
• Li, Qian
• Yang, Jing
• Li, Wen
• Huang, Lulu
• Li, Xue
• Zhang, Yulei
• Wu, Qiangshun
• Guo, Xuejie

Titel

Electrochemical treatment of antibiotic wastewater containing ceftriaxone sodium by porous Ti/Magnéli Ti4O7 nanotube arrays

Ist Teil von

• Water resources and industry, 2024-06, Vol.31, p.100235, Article 100235

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2024

Quelle

EZB-FREE-00999 freely available EZB journals

Beschreibungen/Notizen

• In this study, porous Ti/Magnéli Ti4O7 nanotube arrays (NTA) was fabricated to pretreat antibiotic wastewater. Characterization of the Ti4O7-NTA illustrated that highly ordered NTA was successfully generated on the porous Ti substrate, which enlarged the specific surface area by 1.67 times. The Ti4O7-NTA has a high oxygen evolution potential (2.60 V) as well as low interfacial charge transfer resistance (4.479 Ω cm−2). Ceftriaxone sodium (CRO) was completely removed from raw antibiotic wastewater after 3 h of treatment by the Ti4O7-NTA, under optimal operation conditions. The biodegradability and toxicity of the wastewater were also significantly enhanced and reduced, as the BOD/COD and EC50,48h values were increased to 0.48 and 57.62 % ± 2.16 %, respectively. The possible degradation pathway of CRO was proposed by LC‒MS. Cathodic polarization was proven to be an effective way to ensure the long-term durability of the Ti4O7-NTA. [Display omitted] •Porous Ti/Magnéli Ti4O7 nanotube arrays were fabricated.•Pure Magnéli Ti4O7 phase was obtained at 950 °C for 60 min under H2/N2.•The porous Ti/Magnéli Ti4O7 nanotube arrays performed well in the electro-degradation of ceftriaxone sodium.•The biodegradability and toxicity of raw antibiotic wastewater were significantly enhanced and reduced after pretreatment.