Application of three different water treatment technologies to shale gas produced water. Issue 2 (4th March 2017)

• Record Type: Journal Article
• Authors: Jang, Eunyoung; Jeong, Seongpil; Chung, Eunhyea
• Is Part Of: Geosystem engineering. Volume 20:Issue 2(2017)
• Page Start: 104
• Page End: 110
• Publication Date: 2017-03-04
• Subjects: Shale gas produced water -- wastewater treatment -- membrane distillation -- reverse osmosis -- evaporative crystallization; Mining engineering -- Periodicals; Petroleum engineering -- Periodicals; Gas engineering -- Periodicals; Geology, Economic -- Periodicals; 620
• DOI: 10.1080/12269328.2016.1239553
• Languages: English
• ISSNs: 1226-9328

Abstract

Abstract: Shale gas produced water is a hypersaline wastewater that is generated during the shale gas development process called as a hydraulic fracturing. The produced water contains many substances including inorganic salts, organic compounds, and particulates. The treatment process of the produced water is mainly composed of four parts: oil and water separation, removal of suspended solids, removal of organics, and salts removal. This study focuses on the total dissolved salts removal through applying three different desalination techniques – membrane distillation (MD), reverse osmosis (RO), and evaporative crystallization (EC). The experiments were conducted using synthetic shale gas produced water to understand the changes of chemical properties in permeate and concentrate. In the permeate solution, MD and EC showed more than 99% of salts removal efficiency for all ions, but RO showed relatively low efficiency. In the concentrate solution, the concentrations of all ions varied according to the type of ions and applied treatment methods.