Mikiyas Abewaa
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View article: Efficient photocatalytic degradation of methylene blue using Arundo donax biochar/graphitic carbon nitride composite
Efficient photocatalytic degradation of methylene blue using Arundo donax biochar/graphitic carbon nitride composite Open
This study presents the synthesis and application of a novel Arundo donax-based biochar/graphitic carbon nitride (ADB/g-C₃N₄) composite for the photodegradation of methylene blue (MB) under visible light irradiation. Biochar from Arundo do…
View article: Adsorption of Phenol from Aqueous Solution Utilizing Activated Carbon Prepared from Catha edulis Stem
Adsorption of Phenol from Aqueous Solution Utilizing Activated Carbon Prepared from Catha edulis Stem Open
Phenol and its derivatives in water and wastewater are highly toxic and challenging to degrade, posing serious environmental and health risks. Therefore, this research focuses on the removal of phenol from aqueous solutions using activated…
View article: Optimization of glucose syrup extraction from Colocasia esculenta starch using enzymatic hydrolysis
Optimization of glucose syrup extraction from Colocasia esculenta starch using enzymatic hydrolysis Open
This study aimed to produce, characterize, and optimize glucose syrup from Colocasia esculenta starch through enzymatic hydrolysis, an area that remains insufficiently explored and studied in the existing literature. The process involved s…
View article: Performance evaluation of a brewery wastewater treatment plant: A case of Heineken Brewery, Addis Ababa, Ethiopia
Performance evaluation of a brewery wastewater treatment plant: A case of Heineken Brewery, Addis Ababa, Ethiopia Open
Untreated wastewater from the brewing industry poses significant environmental risks due to its high organic content. Therefore, this study evaluates the wastewater treatment system at Heineken Brewery in Addis Ababa, Ethiopia. Key paramet…
View article: Removal of nutrients and bioelectricity generation from institutional wastewater using constructed wetland-microbial fuel cell
Removal of nutrients and bioelectricity generation from institutional wastewater using constructed wetland-microbial fuel cell Open
This study evaluated the removal of nutrients from institutional wastewater and the generation of bioelectric power using a microcosm-scale constructed wetland system integrated with a microbial fuel cell (CW-MFC). The research explored th…
View article: Assessment of the water footprint of the brewery industry: The case of Heineken, Addis Ababa, Ethiopia
Assessment of the water footprint of the brewery industry: The case of Heineken, Addis Ababa, Ethiopia Open
The brewery industry is among the most water-intensive sectors, typically consuming 4–6 L of water for every liter of beer produced, necessitating a strong focus on water sustainability. Therefore, this study aimed to quantify the water fo…
View article: Integrated circular economic approach of solid waste management and resource recovery: Poultry feather-based keratin extraction and its application in leather processing
Integrated circular economic approach of solid waste management and resource recovery: Poultry feather-based keratin extraction and its application in leather processing Open
The tanning industry faces considerable environmental challenges due to effluent load and hazardous chemical generation during processes like tanning and retanning. Therefore, this research work addresses these issues focusing on the pilot…
View article: Bacterial growth inhibition in spring water utilizing silver nanoparticles: Optimization using central composite design
Bacterial growth inhibition in spring water utilizing silver nanoparticles: Optimization using central composite design Open
Ensuring safe drinking water remains a significant challenge due to the prevalence of waterborne diseases. While chlorine-based and UV-based methods effectively kill pathogens, they often generate harmful byproducts. Consequently, there's …
View article: Keratin hydrolysate as a chrome exhaust aid and keratin filler in leather processing: A cleaner technology approach for tannery solid waste management and leather manufacturing
Keratin hydrolysate as a chrome exhaust aid and keratin filler in leather processing: A cleaner technology approach for tannery solid waste management and leather manufacturing Open
Hair burning unhairing and dampening of tannery wastes during the hair-saving unhairing process are becoming significant problems in the tanning industry. Therefore, this research article focuses on the extraction of keratin hydrolysate (K…
View article: Optimization of natural dye extraction from the root of Rumex abyssinicus plant using response surface methodology
Optimization of natural dye extraction from the root of Rumex abyssinicus plant using response surface methodology Open
In this study, Rumex abyssinicus (R. abyssinicus) roots were used for dye extraction via Soxhlet extraction. The effects of particle size, solid-to-liquid ratio and extraction time on dye yield were examined. The optimization of dye extrac…
View article: Keratin extraction optimization from poultry feather using response surface- Box-Behnken experimental design method
Keratin extraction optimization from poultry feather using response surface- Box-Behnken experimental design method Open
This study aimed to develop a cost-effective method for managing chicken feather waste by hydrolyzing it in an alkaline medium to extract keratin hydrolysate. Through a Box-Behnken experimental design, the effects of NaOH solution concentr…
View article: Hexavalent chromium adsorption from aqueous solution utilizing activated carbon developed from Rumex abyssinicus
Hexavalent chromium adsorption from aqueous solution utilizing activated carbon developed from Rumex abyssinicus Open
The indiscriminate release of chromium-saturated effluent into water bodies has raised concerns regarding its effect on human health and environmental ecology. Therefore, this research aimed to remove hexavalent chromium from an aqueous so…
View article: Energy audit and associated carbon footprint estimation for a Meta Abo brewery
Energy audit and associated carbon footprint estimation for a Meta Abo brewery Open
Industrial development in Ethiopia is rapidly increasing, leading to a growing gap between energy supply and demand. To address this, efficient energy utilization in existing industries is crucial. Energy audits identify energy losses and …
View article: Methylene blue adsorption from aqueous solution using activated carbon of spathodea campanulata
Methylene blue adsorption from aqueous solution using activated carbon of spathodea campanulata Open
This study aimed to determine the effectiveness of Spathodea Campanulata derived activated carbon in removing methylene blue (MB) from wastewater. The activated carbon was prepared through chemical impregnation with H3PO4 and thermal activ…
View article: Preparation of Rumex abyssinicus based biosorbent for the removal of methyl orange from aqueous solution
Preparation of Rumex abyssinicus based biosorbent for the removal of methyl orange from aqueous solution Open
Methyl orange is abundantly present in wastewater generated from textile industries causing serious human health and environmental problems. Therefore, this study was aimed at preparing a low cost and effective biosorbent from the stem of …
View article: Adsorption of Black MNN reactive dye from tannery wastewater using activated carbon of Rumex Abysinicus
Adsorption of Black MNN reactive dye from tannery wastewater using activated carbon of Rumex Abysinicus Open
Background A high concentration of Black MNN reactive dye in untreated tannery wastewater can cause adverse effects on public health and environmental sustainability. Therefore, this study aimed to investigate the adsorptive performance of…
View article: Adsorption of methylene blue from textile industrial wastewater using activated carbon developed from Rumex abyssinicus plant
Adsorption of methylene blue from textile industrial wastewater using activated carbon developed from Rumex abyssinicus plant Open
Methylene blue (MB) is abundantly found in textile industrial effluent which can cause severe health problems for public and environmental ecology. Therefore, this study aimed to remove MB from textile wastewater using the activated carbon…
View article: Magnetite-impregnated biochar of parthenium hysterophorus for adsorption of Cr(VI) from tannery industrial wastewater
Magnetite-impregnated biochar of parthenium hysterophorus for adsorption of Cr(VI) from tannery industrial wastewater Open
The tannery industry inevitably generates toxic and catastrophic wastewater, which results in a huge threat to public health and water resources. Therefore, this work aimed to synthesize parthenium hysterophorus-based biochar–Fe 3 O 4 comp…