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Carbon-bearing Wastes as the Binders for Coal Briquette Production
Issue:
Volume 9, Issue 1, February 2021
Pages:
1-5
Received:
7 December 2020
Accepted:
24 December 2020
Published:
4 January 2021
Abstract: The search of optimal compositions for different kinds of coal (lignite and hard coals) with the slam of lean coal for briquettes production was done. Some cheap and non-toxic binders for increasing mechanic stability and water resistance of coal-slam briquettes were experienced. Tree best kinds of binders from coke-chemical industry wastes for improving the properties of coal briquettes were chosen. The main technological parameters of coal briquetting without a binder additive - humidity, size of the pressed coal (dried), pressing pressure, drying temperature and pressing duration are in a certain relationship. To obtain a given briquette strength when changing one of the parameters, it is necessary to change another or several parameters. The dependence of the mechanical strength of briquettes on each individual parameter is often extreme. The value of the parameter at which the maximum strength of the briquettes is obtained is taken as optimal. For coals with good briquetting properties, this extreme dependence of the mechanical strength on individual briquetting parameters is more pronounced, especially for the bending and compressive strength of briquettes. Therefore, in the production of briquettes, an important element in the composition of the coal composition is the binder. The article discusses the search for a binder for the production of fuel briquettes using various grades of coals based on local raw materials.
Abstract: The search of optimal compositions for different kinds of coal (lignite and hard coals) with the slam of lean coal for briquettes production was done. Some cheap and non-toxic binders for increasing mechanic stability and water resistance of coal-slam briquettes were experienced. Tree best kinds of binders from coke-chemical industry wastes for imp...
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Demonstration and Scaling up of In-Situ Moisture Conservation Techniques on Maize (Zea mays L.) Yield in Negele Arsi and Adami Tulu Jido Kombolcha Districts
Dulo Husen,
Zelalem Shalemew,
Anbese Ambomsa,
Ayub Jelde
Issue:
Volume 9, Issue 1, February 2021
Pages:
6-13
Received:
11 December 2020
Accepted:
28 December 2020
Published:
10 March 2021
Abstract: The experiment was conducted during 2019 cropping season in six Peasant Associations (PAs) of Negele Arsi and Adami Tulu Jido Kombolcha Districts; with objectives of demonstration and scaling up the selected in-situ moisture conservation structures (Tied ridge and furrow closed at both Ends), awareness creation and analyzed the cost benefit. Totally twelve (12) FREG members were established and 600 farmers, 12 animator and 6 DAs were participated on training from six Peasant Associations (PAs). Two FREG members were established in each Peasant Associations (PAs). From these, 240 farmers were from FREG and 360 from non-FREG were participated on introductory training. Totally 100 farmers, 4 DAs and animator, 4 SMS and 32 others were participated on field day from both districts respectively. The mean yield obtained from tied ridge and furrow closed at both ends were 89.55 and 71.69 Qtha-1 at Negele Arsi district and 72.81 and 69.96 Qtha-1 were obtained from Adami Tulu Jido Kombolcha district respectively. The two-selected in-situ moisture conservation structures were gave a significant yield in both districts. The net benefit obtained from tied ridge, furrow closed at both end were 50,241 and 37,096 ETH Birr ha-1 respectively at NegeleArsi district. In addition, the net benefit obtained from tied ridge and furrow closed at both end were 38,119 and 35,896 ETH Birr ha-1 respectively at Adami Tulu Jido Kombolcha district. In-situ moisture conservation structures (tied ridge and furrow closed at both Ends) were more economical and better if it is more scale up in the study area and similar agro ecology. Agricultural and natural resource office should have give a great attention to popularized and scaling up this technologies in moisture deficit areas of the districts.
Abstract: The experiment was conducted during 2019 cropping season in six Peasant Associations (PAs) of Negele Arsi and Adami Tulu Jido Kombolcha Districts; with objectives of demonstration and scaling up the selected in-situ moisture conservation structures (Tied ridge and furrow closed at both Ends), awareness creation and analyzed the cost benefit. Totall...
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Determinants of Households’ Willingness to Pay for Soil Conservation Practices: The Case of Assosa District, Assosa Zone, Benishangul Gumuz Regional State, Ethiopia
Issue:
Volume 9, Issue 1, February 2021
Pages:
14-20
Received:
30 January 2021
Accepted:
10 March 2021
Published:
22 March 2021
Abstract: The use of natural resources dictates economic growth in many developing economies. Unfortunately, soil erosion is on the higher side. As a result, it was important to recognize rural households' preferences for soil conservation and restoration practices. It resulted in the loss in quality and the service provided by the environment. Thus, sustainable undertaking of conservation practices is important to alleviate the problem that requires further investment. This article examined determinants of the readiness of individual homes to pay for soil preservation practices. Multi-stage random sampling was used to select from five kebeles 120 household heads. For these purposes, both primary and secondary data have been used. The primary data were gathered using a structured questionnaire from 120 sample homes. Using descriptive and inferential statistics and Tobit model, the information gathered were evaluated. The tobit model outcome showed that family gender, household head origin, household head academic level, property holding, TLU and farm earnings were positively and substantially linked to the likelihood of readiness to pay while age and original offer were negative and substantially linked to the likelihood of readiness to pay. Therefore, when developing soil preservation policies in the region, these factors should be regarded.
Abstract: The use of natural resources dictates economic growth in many developing economies. Unfortunately, soil erosion is on the higher side. As a result, it was important to recognize rural households' preferences for soil conservation and restoration practices. It resulted in the loss in quality and the service provided by the environment. Thus, sustain...
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