International Journal of Polymer Science / 2019 / Article / Tab 1

Research Article

Ecofriendly Reduction of Methylene Blue with Polyurethane Catalyst

Table 1

Name of the kinetic models used, mathematical form of the kinetic models, regression coefficient (2), and rate constant () for reduction of MB with CPUF, ascorbic acid, and mixtures of ascorbic acid and Psidium guajava or Citrus limon extracts at temperature .

Sr. no.Name of the kinetic model usedMathematical form of the kinetic modelRegression coefficient ()Rate constant ()

1.Zero order- = 0.83410.71570.90090.0501 mol dm-3 min-10.0289 mol dm-3 min-10.0325 mol dm-3 min-1
2.1st orderln() = -0.94640.88690.93560.1485 min-10.1048 min-10.0885 min-1
3.2nd order1/ = + 1/00.86220.70930.79920.5304 mol-1 dm3 min-10.585 mol-1 dm3 min-10.3133 mol-1 dm3 min-1

aReduction of MB in the presence of ascorbic acid and CPUF (0.25 g). bReduction of MB in the presence of Citrus limon extract and ascorbic acid (50 : 50) with CPUF (0.25 g). cReduction of MB in the presence of Psidium guajava extract and ascorbic acid (50 : 50) with CPUF (0.25 g).

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