Esayas Alemayehu

Optimization of surface water treatment using indigenous biocoagulants ( Opuntia ficus-indica and Moringa stenopetala ): a central composite design approach

ABSTRACT The growing concerns over the economic, health, and environmental impacts of traditional chemical coagulants have sparked a global interest in finding more sustainable alternatives for water treatment. This study explores and compares two locally available Ethiopian plan...

Effects of hydraulic retention time and indigenous substrates on the treatment performance of constructed wetlands planted with Cyperus alternifolius for healthcare wastewater remediation

Due to persistent contaminants in healthcare wastewater (HWW), conventional treatment technologies are ineffective. Yet few studies utilize local materials, and none have compared pumice versus ignimbrite substrates with Cyperus alternifolius in horizontal subsurface flow constru...