Research Article
Separation of Methylene Blue Dye from Aqueous Solution Using Triton X-114 Surfactant
Table 5
Change in entropy, change in enthalpy, and change in Gibbs free energy at different surfactant concentration and different temperature.
| Triton X-114 () | (K) | | Δ (J/mole K) | Δ (J/mole) | −Δ (J/mole) |
| 0.01 | 303.15 | −0.3306 | 253.5656 | 78415.2053 | 1919.0120 | 313.15 | 0.2769 | 253.5656 | 78415.2053 | 950.8279 | 323.15 | 0.5025 | 253.5656 | 78415.2053 | 3486.4839 | 333.15 | −0.1417 | 253.5656 | 78415.2053 | 6022.1400 |
| 0.02 | 303.15 | −0.4368 | 230.2635 | 71928.1536 | −2158.3041 | 313.15 | 0.1592 | 230.2635 | 71928.1536 | 144.3312 | 323.15 | 0.3266 | 230.2635 | 71928.1536 | 2446.9665 | 333.15 | −0.1401 | 230.2635 | 71928.1536 | 4749.6018 |
| 0.03 | 303.15 | −0.1723 | 140.6855 | 43483.1595 | −855.4407 | 313.15 | 0.1422 | 140.6855 | 43483.1595 | 551.4147 | 323.15 | 0.2902 | 140.6855 | 43483.1595 | 1958.2701 | 333.15 | −0.1452 | 140.6855 | 43483.1595 | 3365.1255 |
| 0.04 | 303.15 | −0.1626 | 120.8778 | 37434.5773 | −808.5972 | 313.15 | 0.1143 | 120.8778 | 37434.5773 | 400.1810 | 323.15 | 0.2354 | 120.8778 | 37434.5773 | 1608.9592 | 333.15 | −0.1468 | 120.8778 | 37434.5773 | 2817.7375 |
| 0.05 | 303.15 | −0.0375 | 71.8343 | 21946.4542 | −180.6514 | 313.15 | 0.1028 | 71.8343 | 21946.4542 | 537.6920 | 323.15 | 0.1963 | 71.8343 | 21946.4542 | 1256.0353 | 333.15 | −0.1071 | 71.8343 | 21946.4542 | 1974.3786 |
| 0.06 | 303.15 | −0.0067 | 65.9964 | 19993.4457 | 3.4541 | 313.15 | 0.1263 | 65.9964 | 19993.4457 | 663.4178 | 323.15 | 0.2062 | 65.9964 | 19993.4457 | 1323.3815 | 333.15 | −0.0603 | 65.9964 | 19993.4457 | 1983.3452 |
| 0.07 | 303.15 | 0.0403 | 44.8196 | 13317.9861 | 262.3618 | 313.15 | 0.1287 | 44.8196 | 13317.9861 | 710.5581 | 323.15 | 0.1821 | 44.8196 | 13317.9861 | 1158.7544 | 333.15 | −0.0774 | 44.8196 | 13317.9861 | 1606.9507 |
| 0.08 | 303.15 | 0.0655 | 25.6553 | 7394.6262 | 378.9162 | 313.15 | 0.1056 | 25.6553 | 7394.6262 | 635.4688 | 323.15 | 0.1444 | 25.6553 | 7394.6262 | 892.0213 | 333.15 | −0.0804 | 25.6553 | 7394.6262 | 1148.5739 |
| 0.09 | 303.15 | 0.1098 | 20.0911 | 5548.8418 | 538.7604 | 313.15 | 0.0883 | 20.0911 | 5548.8418 | 739.6713 | 323.15 | 0.1702 | 20.0911 | 5548.8418 | 940.5823 | 333.15 | −0.0848 | 20.0911 | 5548.8418 | 1141.4932 |
| 0.1 | 303.15 | 0.1293 | 38.3460 | 10958.1008 | 660.7315 | 313.15 | 0.1425 | 38.3460 | 10958.1008 | 1044.1913 | 323.15 | 0.2472 | 38.3460 | 10958.1008 | 1427.6511 | 333.15 | 0.0070 | 38.3460 | 10958.1008 | 1811.1109 |
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