TY - JOUR
T1 - Evaluation of sodium lignin sulfonate as draw solute in forward osmosis for desert restoration
AU - Duan, Jintang
AU - Litwiller, Eric
AU - Choi, Seung Hak
AU - Pinnau, Ingo
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This research was supported by King Abdullah University of Science and Technology baseline funding for Ingo Pinnau, The authors acknowledge HTI for providing FO membranes for this research. The authors also acknowledge Dr. Federico Pacheco for valuable discussions.
PY - 2014/3
Y1 - 2014/3
N2 - Sodium lignin sulfonate (NaLS), an abundant waste product of paper manufacturing, can be used in desert restoration. Combined with water and applied on arid land, NaLS has been shown to stabilize sand and provide a medium for plant growth. Here, we demonstrate that NaLS is an efficient draw solute in forward osmosis (FO) to extract water from impaired sources. The osmotic pressure of a 600. g. NaLS/kg water solution is 78. bar (7.8 MPa) as measured by freezing point depression. The FO performance using NaLS draw solute was evaluated with commercial FO membranes under various test conditions. The effects of draw solute concentration, feed salinity and membrane orientation were systematically investigated. Potential ways to optimize the process, e.g. combining fertilizer draw solutes and NaLS, are proposed. © 2013 Elsevier B.V.
AB - Sodium lignin sulfonate (NaLS), an abundant waste product of paper manufacturing, can be used in desert restoration. Combined with water and applied on arid land, NaLS has been shown to stabilize sand and provide a medium for plant growth. Here, we demonstrate that NaLS is an efficient draw solute in forward osmosis (FO) to extract water from impaired sources. The osmotic pressure of a 600. g. NaLS/kg water solution is 78. bar (7.8 MPa) as measured by freezing point depression. The FO performance using NaLS draw solute was evaluated with commercial FO membranes under various test conditions. The effects of draw solute concentration, feed salinity and membrane orientation were systematically investigated. Potential ways to optimize the process, e.g. combining fertilizer draw solutes and NaLS, are proposed. © 2013 Elsevier B.V.
UR - http://hdl.handle.net/10754/563407
UR - https://linkinghub.elsevier.com/retrieve/pii/S0376738813009228
UR - http://www.scopus.com/inward/record.url?scp=84890207338&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2013.11.029
DO - 10.1016/j.memsci.2013.11.029
M3 - Article
SN - 0376-7388
VL - 453
SP - 463
EP - 470
JO - Journal of Membrane Science
JF - Journal of Membrane Science
ER -
