Research Article Open Access

Adsorption and Descaling of Cellucotton and Chitosan-Modified Bentonite for Produced Water

Tao Yu1, Ying Wang1, Chengtun Qu1, Jinling Li1 and Bo Yang1
  • 1 Xi'an Shiyou University, China

Abstract

The compatibility of non-identical layers within the water present in the produced oil is poor and ion reactions in the oil mixed with water result in scale formation, thereby having a significant impact on oilfield safety production. In this study, methods for the descaling of produced water from different blocks were studied according to the quality characteristics of the produced water. Results show that scale was produced at a concentration of 94 mg/L when three-phase separated water and formation water were mixed at a volume ratio of 1:0.3. The flocculation performance was optimized when the pH of the mixed water sample was adjusted to 7.5 and addition amount of polyaluminium chloride and polyacrylamide was 80 and 3 mg/L, respectively. In addition, the mixed water sample was adsorbed and descaled using cellucotton and chitosan-modified bentonite. Results show that the method for treating the mixed water sample first with cellucotton followed by the chitosan-modified bentonite shows the optimal adsorption–flocculation performance, thereby reducing the concentration of scale in the treated water to 3 mg/L.

American Journal of Biochemistry and Biotechnology
Volume 16 No. 2, 2020, 208-215

DOI: https://doi.org/10.3844/ajbbsp.2020.208.215

Submitted On: 10 March 2020 Published On: 18 May 2020

How to Cite: Yu, T., Wang, Y., Qu, C., Li, J. & Yang, B. (2020). Adsorption and Descaling of Cellucotton and Chitosan-Modified Bentonite for Produced Water. American Journal of Biochemistry and Biotechnology, 16(2), 208-215. https://doi.org/10.3844/ajbbsp.2020.208.215

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Keywords

  • Produced Water
  • Adsorption
  • Descaling
  • Chitosan-Modified Bentonite