Life cycle and economic assessments of engineered osmosis and osmotic dilution for desalination of Haynesville shale pit water

Abstract The treatment of oil and gas (OG the FO technology is evaluated when operated as an engineered osmosis system and as a stand-alone osmotic dilution process. Cradle-to-grave life cycle inventories are developed for each FO process and evaluated using ten environmental impact categories. The relative environmental impacts of FO are found to be comparable to the transportation and pumping energy alone required for deep well injection. At the current state of the technology, the energy demand of the FO systems when operated with no upstream pretreatment is the single greatest contributor to the negative environmental impacts. At 75% water recovery, FO can potentially reduce pit water management costs by nearly 60% compared to deep well disposal, and pit water transportation requirements can be reduced as much as 63%.