E3S Web Conf.
Volume 329, 20214th International Conference on Green Energy and Sustainable Development (GESD 2021)
|Number of page(s)||4|
|Published online||09 December 2021|
Fenton-like oxidation of Hydroxypropyl guar gum catalysed by Cu(II) complex at high pH
1 Xi’an Key Laboratory of Tight oil (Shale oil) Development, Xi’an Shiyou University, Xi’an Shaanxi, China
2 Xi’an Changqing Chemical Group Co. Ltd, Xi’an, China
3 Changqing Drilling Company of CCDC, Xi'an, China
4 Oil Production No.1, Changqing Oilfield Company, Yanan, China
5 Oil Production No.11, Changqing Oilfield Company, Xi’an, China
* Corresponding author: firstname.lastname@example.org
Large amounts of wastewater containing hydroxypropyl guar gum (HPGG), polyacrylamide (PAM) and carboxymethyl cellulose (CMC) are produced in the process of fracturing. In the work, a Fentonlike system in the presence of H2O2 was employed to degrade wastewater. The effects of oxidant concentration, catalyst dosage, the temperature and pH on the degradation efficiency of the polymer were studied in detail. Results showed that the prepared complex (Cu(II)L) exhibited a great catalytic effects in the range of pH 7-12. It was also found that under the conditions of 45℃ and pH=10, when the amount of H2O2 was 5.0% (mass ratio to hydroxypropyl guar gum) and the amount of Cu (II)L complex was 10%, HPGG had a great reduction rate, and its viscosity value can be reduced from 18 to 6.47.
Key words: Guar gum / wastewater treatment / Fenton-like oxidation
© The Authors, published by EDP Sciences, 2021
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