In the present investigation, an analytical numerical solution is presented for the mass transfer from a rotating disk to a Bingham fluid for the case of laminar boundary layer flow. The analytical approach includes the coupled effects of steady disk rotation and non-Newtonian fluid properties on the mass transfer rate. A dimensionless expression for the wall mass transfer rate based on the Sherwood number, Sh, is obtained in terms of the system parameters (Reynolds number, $Rep$, and Schmidt number, $Scp$) which depend on the dimensionless yield stress or Bingham number, $By$. The analytical relation indicates that an increase in $By$ (up to the limit $By⩽1$) leads to a slight increase in the wall mass transfer rate, and thereafter, for $By>1$, the mass transfer rate is reduced.

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