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Environmental Impact Assessment (EIA) practice in Cameroon has been plagued with many constraints especially from the infrastructure and EIA resource perspective. The present legal and procedural disposition vis-Ã -vis EIA in Cameroon is monumental and manifest some clarity of expositionwith regards to the practical and fundamental steps for EIA practice in the country. However, a number of impediments still prevail that deter the full efficiency of this legislation. In search for explanations to this trend, this study was conducted to examine the current framework governing EIA in Cameroon implemented in February 2005. Content analysis and interviews with stakeholders in the EIA process were undertaken to identify key barriers associated with EIA practice in Cameroon. The paper maintains that inadequate baseline data, procedural flaws in scoping, exorbitant administrative fees, absence of an appeal procedure, unclear proviso, incompetent personnel and over centralisation of EIA powers are key barriers that appear to impede a healthy EIA practice in Cameroon. In conclusion, it is submitted that for a robust EIA practice to prevail in Cameroon, there is an urgent need for a great deal of focus on the recommendations prescribed within the context of the paper.
The effect of wood moisture content on the performance and emissions of biomass-fired stoves was assessed using the laboratory-based water boiling test. This test yielded a number of performance indicators (time to boil water, specific fuel consumption and energy efficiency) when the stove was operated at both high and low power. When combined with emission measurements, combustion efficiency was investigated as well. This paper presents an integrated efficiency evaluation of the traditional open fire, an Aprovecho rocket stove from China and a "skirt" stove which were all tested each at 5%, 15% and 30% moisture content (wet basis) of wood. Results showed that an increase in moisture content increased efficiency up to a point. Extremely dry or over-wet fuel inhibited combustion efficiency. Overall, the type of stove exhibited a stronger effect on the total emissions than did the moisture level in the fuel.
Sustainability appraisal of used vehicle trade policy options in sub-Saharan African countries
(2008)
This paper examines the structure of contemporary vehicle mitigation commitments after lead gasoline phase out in sub-Sahara Africa. First, this paper reviews some of the leading domestic trade policy proposals (emission reduction actions) with regard to their expected technology impacts. Next, it assesses the options based on establishing benchmarks for measuring policy performance in curbing vehicle emissions simultaneously with core sustainable development priorities. Assessing these options identifies the key variables in designing mitigation commitments, offers criteria for evaluating different approaches and discusses the implications of the leading alternatives. This paper argues that a more pronounced dilemma of synergies exists between vehicle emissions reduction and core development concerns as the major players target emissions too narrowly. Finally, this paper sheds more light on strategies that could be employed simultaneously at the regional and domestic levels to enhance sustainable development as trade continues to grow and evolve.
The present work carries out an approximation in the calculation of the current number of End-of-Life Vehicles (ELV) in México. The vehicles taken into account are passenger cars and light trucks, which due to their large number represent almost 70% of the total vehicular fleet in México. This work describes, in a first instance, the diverse factors affecting the number of ELV; after this, the available information about the most relevant features of theMexican fleet is presented. Based on historical data, it is estimated that current number of ELV in México is around 690,000 units. In the second part, two probable scenarios are established for the future growth of the Mexican vehicular fleet. Using these data as inputs, it is implemented the Weibull distribution. The iterative implementation of this tool generates the curves that describe the retirement of vehicles in the midterm. The result of this implementation estimates that the number of ELV for 2020 is around one million units.
Negative Impacts of Oil Exploration on Biodiversity Management in the Niger Delta Area of Nigeria
(2008)
Environmental pollution arising from oil prospecting and exploration in the Niger Delta area of Nigeria has impacted negatively on the biodiversity of the affected areas. The main stresses arise from leakages of crude oil, gas flaring and the escape of other chemicals used in production processes. Effects on the flora and fauna of freshwater ecosystems in this part of Nigeria have been noticed. The government has established laws for protection of the environment from oil exploration, but these must be made effective in terms of implementation, enforcement and monitoring by responsible agencies. The oil companies operating in this region have also contributed to reducing the impacts of their activities on the host environment. This paper discusses the various impacts that oil production has had so far on the biodiversity of this unique part of Nigeria, and reports on efforts made by the government, oil companies and non-governmental organizations to remedy the situation.