Real Gross Domestic Growth Determinants in an Oil Revenue Dependent Country: An Assessment of Nigeria’s Exchange Rate and Interest Rate
Felicia Akujinma Anyanwu,
Patrick Kanayo Adigwe,
Amalachukwu Chijindu Ananwude
Issue:
Volume 5, Issue 4, August 2017
Pages:
78-86
Received:
30 June 2017
Accepted:
17 July 2017
Published:
23 October 2017
Abstract: The determinants of real gross domestic product growth in Nigeria was ascertained in this study. The research was motivated by 1.53 percent decline in real gross domestic product growth rate in 2016 coupled with the foreign exchange crisis that engulfed the economy. Specifically, the study determined whether exchange rate and interest rate predict real gross domestic product growth using secondary data obtained from Central Bank of Nigeria for the period 1980 to 2016. Aside testing for stationarity of the data and diagnosing the model to meet standard econometric postulations, the Granger Causality prediction estimation was employed to realize the objective of the research. Firstly, by the application of Johansen co-integration and ARDL methodology, the study identify that exchange rate and interest rate are not co-integrated/related with real gross domestic product growth. Secondly, the multiple regression estimated via ARDL shows that exchange rate and interest rate have negative but insignificant relationship with real gross domestic product growth. Finally, the study empirically found that exchange rate and interest rate are not determinants of real gross domestic product growth in Nigeria. To strengthen the value of the local currency against the US dollar in particular, and other currencies of the world, a well-managed foreign exchange floating system is preferred. Diversification from oil to non-oil policies should be pursued with vigour with the view of aggressively down playing importation to reduce the pressure on forex which jolts up exchange rate position adversely.
Abstract: The determinants of real gross domestic product growth in Nigeria was ascertained in this study. The research was motivated by 1.53 percent decline in real gross domestic product growth rate in 2016 coupled with the foreign exchange crisis that engulfed the economy. Specifically, the study determined whether exchange rate and interest rate predict ...
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Separation of Free Glycerol and Glycerides from Biodiesel by Means of Liquid-Liquid Extraction
Ana Petracic,
Aleksandra Sander,
Lana Magic
Issue:
Volume 5, Issue 4, August 2017
Pages:
87-94
Received:
2 July 2017
Accepted:
2 August 2017
Published:
31 October 2017
Abstract: This paper investigates glycerol and glycerides extraction process from fresh and waste sunflower oil biodiesel. Deep eutectic solvent choline-chloride: ethylene-glycol (molar ratio 1:2.5) was used as extraction media in both batch experiments and continuous Karr column. Biodiesel was synthesized in an alkali catalysed chemical transesterification reaction. Three process variables, namely hydrodynamic conditions, solvent to biodiesel ratio and extraction duration were investigated and their impact on the extraction efficiency was found to be largely negligible. Throughout the whole range of process variables the extraction efficiency was relatively high, getting slightly lower only during the continuous experiments. After the extraction, free glycerol content was below the limit for all samples, but the total glycerol and glycerides content was too high to fully comply with biodiesel quality standards. Selected extraction solvent has proved to be efficient for free glycerol removal in the tested range of conditions, but further process modifications and possible raw material and biodiesel processing will be needed to reduce the content of total glycerol and glycerides.
Abstract: This paper investigates glycerol and glycerides extraction process from fresh and waste sunflower oil biodiesel. Deep eutectic solvent choline-chloride: ethylene-glycol (molar ratio 1:2.5) was used as extraction media in both batch experiments and continuous Karr column. Biodiesel was synthesized in an alkali catalysed chemical transesterification ...
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A Critical Review of Heavy Metal Pollution and Its Effects in Bangladesh
Md. Simul Bhuyan,
Md. Shafiqul Islam
Issue:
Volume 5, Issue 4, August 2017
Pages:
95-108
Received:
31 October 2016
Accepted:
10 February 2017
Published:
31 October 2017
Abstract: Heavy metal, one of the most hazardous pollutant that can pose serious threat to human and environment. The concentrations of metals are increasing at an alarming rate due to boost of unplanned industrialization and urbanization. Though some metals are playing crucial role as micronutrients but the excessive amount exert negative impact at great extent. The existence of toxic heavy metals in the air, water and sediment can cause severe problems to all organisms because of their long persistence nature and bioaccumulation in the food chain. The present study reviews the various area of Bangladesh to make information on the sources of metal pollution, dissemination of metals in the environment and their possible effects on atmosphere, water, sediment, fishes and vegetables (plants).
Abstract: Heavy metal, one of the most hazardous pollutant that can pose serious threat to human and environment. The concentrations of metals are increasing at an alarming rate due to boost of unplanned industrialization and urbanization. Though some metals are playing crucial role as micronutrients but the excessive amount exert negative impact at great ex...
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