Degradation of toluene using UV/hydrogen peroxide process

• Autorzy: Cai Shaokang , Sun Yue , Gao Canzhu , Li Pengfei , Cheng Zhongfa

Identyfikatory

DOI

10.37190/epe210101

• Języki publikacji: EN

Abstrakty

EN

Toluene in wastewater is volatile and difficult to degrade, and the longer it stays in the water, the higher is the risk. An advanced oxidation process (AOPs) has been used to degrade toluene rapidly and efficiently in wastewater by using ultraviolet light and hydrogen peroxide. Toluene in solution (initial concentration – 180 mg/dm³) with hydrogen peroxide (H₂O₂ dose – 2022 mg/dm³) was almost decomposed within 150 min. pH as well as the presence of various ions in waste water did not affect the degradation process. However, under strongly acidic conditions (pH less than 3), the chloride ions reduced the degradation efficiency of toluene. Based on the UV spectrophotometer and GC-MS analyses, the degradation pathways were observed: first, the methyl group was oxidized leading to the generation of benzoic acid, the benzene ring was subsequently opened by the action of hydroxyl radical, followed by the gradual decomposition of the intermediate products into small molecules such as water and carbon dioxide.

Słowa kluczowe

EN

AOP; toluene; hydrogen peroxide; spectrofotometer

PL

AOP; toluen; nadtlenek wodoru; spektrofotometria

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2021
• Tom: Vol. 47, nr 1
• Strony: 5--15
• Opis fizyczny: Bibliogr. 21 poz., rys.

Twórcy

autor

Cai Shaokang

• School of Environmental Science and Engineering, Shandong University, Qingdao Shandong, China

autor

Sun Yue

• School of Environmental Science and Engineering, Shandong University, Qingdao Shandong, China

autor

Gao Canzhu

• School of Environmental Science and Engineering, Shandong University, Qingdao Shandong, China

autor

Li Pengfei

• Shandong Taihe Water Treatment Technologies Co., Ltd., Zaozhuang, Shandong, China

autor

Cheng Zhongfa

• School of Environmental Science and Engineering, Shandong University, Qingdao Shandong, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).