We study active phase separation using a coarse grained model known as active model B+ (AMB+) introduced by Tjhung et al. (Phys Rev X 8:031080, 2008). By numerically solving the model equations, we analyze the time evolution of phase-separated domains and explore the influence of activity parameters, specifically \(\lambda \) and \(\zeta \) , on domain growth. Our results indicate that increasing the activity tends to slow down the coarsening dynamics. Notably, within a certain range of higher values of \(\lambda \) and \(\zeta \) , the domain growth becomes arrested, indicating a suppression of coarsening due to activity.