Toward sustainable treatment: Life cycle assessment-based optimization of shale oil fracturing flowback fluid process in the Songliao Basin - Yiou Xiao; Peng Liu; Yue Chen; Daliang Xu; Weichen Zeng; Jinlong Wang; Hongzhi Tao; Pengrui Jin; Fang Ma; Jialin Song (Journal of Water Process Engineering, 2026)