CIESC Journal ›› 2025, Vol. 76 ›› Issue (10): 5213-5224.DOI: 10.11949/0438-1157.20250417

• Separation engineering • Previous Articles     Next Articles

Electrochemical method for synchronous extraction of lithium and bromine from oil and gas field produced water to lithium bromide

Haixia ZHAO1,4(), Yang LIU2, Lei WANG1,4, Fengfeng GAO3, Zhiyuan GUO1,4, Panpan ZHANG1,4, Jing WANG1,4, Zhiyong JI1,4()   

  1. 1.Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering, Hebei University of Technology, Tianjin 300401, China
    2.PetroChina Changqing Oilfield Branch Oil and Gas Technology Research Institute, Xi'an 710018, Shaanxi,China
    3.College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi,China
    4.Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300401, China
  • Received:2025-04-20 Revised:2025-05-29 Online:2025-11-25 Published:2025-10-25
  • Contact: Zhiyong JI

电化学法油气田采出水同步提锂溴及制溴化锂

赵海霞1,4(), 刘洋2, 王雷1,4, 高凤凤3, 郭志远1,4, 张盼盼1,4, 汪婧1,4, 纪志永1,4()   

  1. 1.河北工业大学化工学院/海水资源高效利用化工技术教育部工程研究中心,天津 300401
    2.中国石油长庆油田分公司油气工艺研究院,陕西 西安 710018
    3.太原理工大学化学与化工学院,山西 太原 030024
    4.河北省现代海洋化工技术协同 创新中心,天津 300401
  • 通讯作者: 纪志永
  • 作者简介:赵海霞(1998—),女,硕士研究生,3344046314@qq.com
  • 基金资助:
    国家自然科学基金项目(92475207);国家自然科学基金项目(U23A20119);国家自然科学基金项目(21978064);河北省自然科学基金项目(B2022202024);河北省自然科学基金项目(B2019202423)

Abstract:

The produced water of oil and gas fields is the waste water produced in the process of oil and gas exploitation, which contains high value-added mineral resources such as lithium and bromine. Currently, the extraction of dissolved lithium and bromine needs to be carried out in steps, which is inefficient and cumbersome. Therefore, the development of synchronous extraction technology is of great significance for the efficient, green and low-cost resource extraction and recovery of lithium and bromine. LiMn2O4 (LMO) and BiOBr (BOB) electrode active materials are prepared by high temperature solid phase and hydrothermal methods, respectively, and then the LMO/BOB electrode system is constructed. The operating voltage of synchronous adsorption without membrane and synchronous desorption with membrane are regulated, and the mass ratio of active materials between the two electrodes is optimized. Under the optimized conditions, the adsorption equilibrium is reached in 3 h, the adsorption capacity of Li+ is 24.13 mg/g, and the adsorption capacity of Br- is 88.13 mg/g. The desorption reaches equilibrium within 3 h, and based on the unit mass LMO electrode, the two-electrode adsorption can obtain 2.70 mmol LiBr solution at one time. The research results provide a method and data reference for the synchronous extraction and recovery of lithium and bromine in the produced water of oil and gas fields.

Key words: synchronous extraction, LMO/BOB electrode system, electrochemical membraneless adsorption, LiBr

摘要:

油气田采出水是油气开采过程中产生的废水,含锂、溴等高附加值矿物资源。目前,溶存锂、溴提取需分步进行,效率较低、操作较为烦琐。因此,开发同步提取技术,对实现锂、溴的高效、绿色、低成本资源化提取与回收具有重要意义。本文分别采用高温固相法和水热法制备LiMn2O4(LMO)和BiOBr(BOB)电极活性材料,进而构建LMO/BOB电极体系;对无膜同步分极吸附和有膜同步分极脱附的操作电压进行调控,并对两电极间活性材料质量比进行优化匹配。优化条件下,3 h达到吸附平衡,Li+吸附容量24.13 mg/g、Br-吸附容量88.13 mg/g;3 h脱附达到平衡,基于单位质量LMO电极,单次分极脱附可得到2.70 mmol LiBr溶液。研究结果为油气田采出水中锂和溴的同步提取与回收提供了方法和数据参考。

关键词: 同步提取, LMO/BOB电极体系, 电化学无膜吸附, LiBr

CLC Number: