Browsing Chemical Engineering by Author "Shumi, Lema Deme"

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Investigation on Reinforcement Effects of Nanocellulose on the Mechanical Properties, Water Absorption Capacity, Biodegradability, Optical Properties, and Thermal Stability of a Polyvinyl Alcohol Nanocomposite Film Article

Bacha, Ebise Getacho; Demsash, Hundessa Dessalegn; Shumi, Lema Deme; Debesa, Bune Erre (2022-06-03)

This paper presents the reinforcement of nanocellulose (NC) in polyvinyl alcohol (PVA) to examine the effect of the amount of reinforcement on the properties of PVA. The nanocellulose was successfully extracted by sulfuric ...
Optimization of Essential Oil Extraction from Bitter Leaf (Vernonia Amygdalina) by Using an Ultrasonic Method and Response Surface Methodology Article

Biru, Meron Asteraye; Waday, Yasin Ahmed; Shumi, Lema Deme (2022-08-16)

Bitter leaf (Vernonia amygdalina) is a common bush or small tree that grows in tropical Africa. In the Ethiopian highland, the bitter leaf has been classi ed by the farmer as a versatile tree with high biomass yield and ...

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