Presentations by Amy E. Childress
Matches: 5
Pressure-Retarded Osmosis for Water and Energy Sustainability
Pressure retarded osmosis (PRO) is a novel process for generating energy utilizing forward osmosis. Forward osmosis is achieved through the salinity differences between fresh (river) water and seawater. Pilot test data is presented on a PRO system. Efficiency and footprint of PRO is compared to other renewable energy sources. Challenegs for com...
Integration of RO and PRO to Decrease Energy Expenditures in Seawater Desalination
While wind and solar are among the most well known renewable resources, salinity gradient power in nearly untapped and has the potential to increase renewable energy production by 20%. Pressure retarded osmosis is a way to capture this. PRO can be utilized in several configurations. The advantage of this system is the brine generated is diluted bac...
Understanding Wetting and Rejection in Membrane Distillation for High Recovery Treatment of High-Salinity Streams
Membrane distillation (MD) is a thermally driven process that can be used to extract distillate-quality water from highconcentration streams using waste heat and/or solar thermal energy. To achieve near-100% rejection of solutes, MD relies on an hydrophobic, unwetted membrane. This presentation investigates the long-term (100-day) wetting resistanc...
Implications of the Membrane-Independent Limiting Flux In Forward Osmosis
Forward osmosis (FO) represent a low-fouling alternative compared to pressure-driven membrane processes, particularly as a pretreatment step for challenging feed waters. Thus, in practical applications, FO membrane fouling is anticipated. This work demonstrates for the first time that a membrane-independent limiting flux exists with fouled FO membr...