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The present study is motivated by the study of reference [1], where thegeneralized second law of thermodynamics has been investigated for a flat FRWuniverse for two viable models of $f(T)$ gravity. In the present work, we haveconsidered a non-flat universe and accordingly studied the behaviors ofequation of state parameter and deceleration parameter. Subsequently, using thefirst law of thermodynamics we derived the expressions for the time derivativeof the total entropy of a universe enveloped by apparent horizon. In the nextphase, with the choice of scale factor pertaining to an emergent universe wehave investigated the sign of the time derivatives of total entropy for threeviable models of $f(T)$ gravity.

Generalized second law of thermodynamics in the emergent universe for some viable models of f(T) gravity