Physical Transformation AtlasPTA
Disequilibrium · disequilibrium:osmotic-pressure-difference

Osmotic pressure difference

Solutions of different solute concentration separated by a semipermeable membrane. Seawater against fresh water is about 27 bar.

symbol ΔΠElectrochemistryenergy form osmoticexergy positivealso: osmotic gradient

Atlas record: 2 claims reference this disequilibrium — 2 established.

Explorerelations · matrix context · routes · sources · cite

conditions: aqueous medium required · selective membrane required
2claims4enumerated routes0routes with complete-composition evidence1candidate routes not searched3cited sources

Relations

drives · 1
Osmotic pressure difference—drives→Pressure-retarded osmosisestablished
produces · 1
Osmosis—produces→Osmotic pressure differenceestablished

Matrix context

D = disequilibrium row · C = coupling family column. A cell reads the state of the atlas for that pair.

C.01 ThermoelectricC.02 ThermionicC.03 ThermoacousticC.04 PyroelectricC.05 ThermogalvanicC.06 ThermomagneticC.07 ThermophotovoltaicC.08 Heat engine (thermomechanical)C.09 Caloric (magneto/electro/elasto)C.10 PiezoelectricC.11 FlexoelectricC.12 TriboelectricC.13 Electrostatic (variable capacitance)C.14 Electromagnetic inductionC.15 MagnetostrictiveC.16 MagnetoelectricC.17 Spin caloritronicC.18 PhotovoltaicC.19 PhotoelectrochemicalC.20 PhotothermalC.21 ElectrochemicalC.22 Osmotic / salinity-gradientC.23 ElectrokineticC.24 TurbomachineryC.25 MagnetohydrodynamicC.26 RadiovoltaicC.27 Nuclear heatC.28 RectennaC.29 ThermochemicalC.30 BiologicalC.31 Fluctuation / information-drivenC.32 Photon momentumC.33 ThermodiffusiveC.34 MarangoniC.35 AcoustoelectricC.36 PhotodiffusiveC.37 Thermo-osmoticC.38 ElectrohydrodynamicC.39 RadioluminescentC.40 Thermopolarization

Enumerated routes through this · 4

Cited sources · 3

  1. [1]
    S. Loeb. Osmotic power plants (1975)
    Science 189, 654–655 · doi:10.1126/science.189.4203.654 · crossref ✓ 2026-09-19 · record
  2. [2]
    B. E. Logan, M. Elimelech. Membrane-based processes for sustainable power generation using water (2012)
    Nature 488, 313–319 · doi:10.1038/nature11477 · crossref ✓ 2026-09-19 · record
  3. [3]
    A. J. Bard, L. R. Faulkner. Electrochemical Methods: Fundamentals and Applications (2nd ed.) (2001)
    Wiley · book, no DOI · record

Cite this entity

Physical Transformation Atlas (2026). entity disequilibrium:osmotic-pressure-difference: Osmotic pressure difference. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/e/disequilibrium/osmotic-pressure-difference

Ids and matrix addresses are stable across revisions; the revision hash identifies the exact canonical files the record was compiled from and is meta.data_hash in every /api export. Reuse terms: see the license field in any export.