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Browsing Thesis by Submit Date

Browsing Thesis by Submit Date

Now showing items 1-20 of 82

MODELING OF HEAT TRANSFER AND SIMULATION OF BIOMASS FERMENTATION DURING BEER PROCESSING; CASE STUDY HARAR BREWERY SHARE COMPANY

Dame, Bayisa (2020-03-17)

The study focuses on modeling of temperature profile during beer fermentation and selecting modeled temperature to simulate with a growth of a microorganism, ethyl ethanol formation, carbohydrate (glucose, maltose, and ...
DESIGN AND PERFORMANCE EVALUATION OF STABLIZATION POND FOR BAHIR DAR UNIVERSITY (BiT CAMPUS)

GEDAMU, BEREDED (2020-03-17)

Waste stabilization ponds are sanitation technologies that consist of open basins that use natural processes to treat domestic wastewater and sludge, as well as animal or industrial wastes. The main objective of this thesis ...
ROASTING OF COFFEE BEAN USING CIRCULATING HOT AIR IN A SINGLE LAYER PACKED BED ARRANGEMENT

Getaneh, Ezana (2020-03-17)

Due to its flavor, aroma and stimulant nature, coffee becomes the second most drinkable liquid next to water all over the world. These natures develop very well during roasting, but there is a problem of partial charring ...
Experimental Study on Optimization of Extrusion Process Parameters and Material Mixture Component Proportion for improving Properties Of Rigid Poly Vinyl Chloride Pipe: Case Study On Amhara Pipe Factory

kefale, Zinaye (2020-03-17)

Many process parameters influence the properties of rigid PVC pipe. In this study, influence of CaCO3, thermal stabilizer as well as mixing temperature of the feed material and melting pressure of extrusion process; on ...
PERFORMANCE EVALUATION AND OPTIMIZATION OF MALT ENZYMES FOR DISTILLED ALCOHOLIC BEVERAGE PRODUCTION USING RESPONSE SURFACE METHODOLOGY

Mekonnen, Basha (2020-03-17)

This thesis work is mainly focused on improving Ethiopian indigenous ethanol (“areki”) processing technology. The effect of mashing and fermentation on the quality of wort and distillery beer was examined using response ...
CHARACTERIZATION AND ADSORPTION INVESTIGATION OF RAW SODIUM BENTONITE CLAY FOR THE REMOVAL OF CHROMIUM FROM TANNERY EFFLUENT

GUADIE, BELAYNEH (2020-03-17)

In this study, the adsorption efficiency of Ethiopian sodium bentonite clay adsorbent for removal of Cr (III) and Cr (VI) ions from tannery effluents has been investigated. The clay was found from Gewane area, Afar region, ...
PREPARATION AND PERFORMANCE EVALUATION OF SILVER IMPREGNATED CERAMIC POT FILTERS FOR HOUSE HOLD LEVEL WATER TREATMENT

Edessa, Abebe (2020-03-18)

About one-fifth of people on earth lack the access to safe drinking water a condition that resulted in the death of many people in developing countries. This research was aimed to prepare silver impregnated ceramic filter ...
Experimental Study on the Efficiency of Gold Recovery from Gold Cyanide and Chloride Solutions using Activated Carbon

Chalachew, Abraham (2020-03-18)

In this study, sawdust and wheat bran were selected to prepare effective and low cost adsorbent for the gold separation from either cyanide or chloride solution. Activated carbon produced from pyrolysis of wheat bran and ...
Preparation and application of mango seed kernel (starch) as a sizing material for Textile Industries.

Mebrahtu, Andom (2020-03-18)

Mango (Mangifera indica) is one of the popular fruits in Ethiopia and many other tropical countries. Mango seed weight is 30 − 45% of total fruit weight which completely goes off as waste. In this study, Mango seed kernel ...
KINETIC BASED SIMULATION OF FIXED BED GASIFIER AND PERFORMANCE STUDY ON SYNGAS PRODUCTION FROM DIFFERENT BIOMASS FEED-STOCKS

Bilal, Bedewi (2020-03-18)

Biomass is one of the most clean and renewable energy resources. Researchers give more and more attentions to the biomass because it can effectively reduce the amount of greenhouse effect due to its zero emission of carbon ...
Production and characterization of Kaolinite Clay and process optimization for deflouridation of ground water in Afar Region

Mohammed, Hayat (2020-03-18)

In many parts of the world, fluoride in drinking water is responsible for notable public health issues. The presence of a small amount of fluoride in drinking water is beneficial to human health but a high amount (>1.5 ...
Removal of Hexavalent Chromium from Aqueous Solution using Basalt Rock Adsorbent in Packed Bed Column

Yesuf, Kedir (2020-03-18)

Chromium(VI) discharge to the environment is becoming great concern for world. Even though there are enormous techniques for removal of chromium(VI), there is still a huge gap on alleviating the problem. Therefore, introducing ...
ANAEROBIC CO- DIGESTION OF CAFETERIA LEFTOVER FOOD AND TOILET WASTES FOR BIOGAS PRODUCTION AND KINETIC EXPERIMENT

WAGAW, KEFALE (2020-03-18)

Anaerobic digestion is a process in which microorganisms break down biodegradable substrates in the absence of oxygen. It can be used to treat various organic wastes and recover bio-energy in the form of biogas, which ...
Investigation of Low Density Polyethylene (LDPE) Plastic wastes as a Modifier of Asphalt Mix for Asphalt Roads Pavement Stability

Birlie, Melkamu (2020-03-18)

Generations of plastic wastes are increasing in alarming rate in recent years and became series environmental problems for both developed and developing countries. The best way to deal with these wastes is to recycle and ...
Performance Evaluation of Mixed Mode Solar Cabinet Dryer for Potato Slice Drying

Alem, Muluken (2020-03-18)

A mixed mode solar cabinet dryer that can be used for potato slice drying was constructed and evaluated. The dryer mainly consists of a solar collector/absorber, drying chamber and chimney. The solar collector is made up ...
Studies on the Evaluation of Effluent water Quality from Guna Treatment Plant to Reuse for Potable Purpose through Design Modification

Takele, Tayachew (2020-03-18)

The study was conducted at Guna Spring Water Bottling Factory in Kimir Dingai, Farta Woreda, found in South Gondar Administrative Zone of the Amhara Region, Ethiopia. The altitude of the area is 4300m above sea level in ...
KNOWLEDGE, ATTITUDE , AND PRACTICE OF MOTHERS ( HAVING 6-23 MONTHS AGE CHILDREN ) ON COMPLEMENTARY CHILD FEEDING AND ASSOCIATED FACTORS IN FARTA WOREDA, NORTHWEST ETHIOPIA, 2017

AYELE, TAREKEGNE (2020-03-18)

Background: The first two years of a child’s life is a critical window during which the foundations for healthy growth and development are built. An estimated 32% of children less than 5 years of age in developing countries ...
HYDROTHERMAL SYNTHESIS OF Na-P1 ZEOLITE FROM PUMICE TO ENHANCE MOISTURE CONTENT AND WATER RETENTION CAPACITY OF SANDY SOIL

DESTA, YONAS (2020-03-18)

Sandy soil has large particles which take up a lot of physical space and hence does not bind water. Amending such type of soil using soluble fertilizer leads to water pollution. Furthermore, Nitrogen fertilizers such as ...
COMPARATIVE STUDY AND OPTIMIZATION OF MODIFIED BITUMEN FROM WASTE PLASTICS (LDPE AND PET)

Shitaw, Zelalem (2020-03-18)

The growth in various types of industries together with population growth has resulted in enormous increase in production of various types of waste plastic materials worldwide. This creates a problem on the disposal ...
Formulation and evaluation of cactus cladode shampoo and comparison of with commercial shampoos

Abadi, Abraha (2020-04)

Shampooismostwidelyusedasacosmeticproductbasicallyasasubstitutefor chemical-baseddetergentduetosuitableadditivesforotherbenefitssuchashair conditioningenhancement,lubrication,medication,etc.Ethiopiaisimportingdifferent ...

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