Browsing by Author "Peter, M."
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Item Catalytic abatement of CO species from incomplete combustion of solid fuels used in domestic cooking(Heliyon, 2018-08) Obada, D.O.; Peter, M.; Kulla, D.M.; Omisanya, N.O.; Atta, A.Y.; Dodoo-Arhin, D.This study reveals a first time approach to catalytic based interventions primarily on indoor air pollution emanating from commercial and household solid fuel burning in a region in Nigeria. An intensive survey of the temperatures at different locations in the common stoves used for cooking was conducted so as to ascertain temperatures suitable for catalyst efficiency and stability. Furthermore, cobalt and iron based catalysts were prepared using ultra stable Y type zeolite as supports. The synthesized catalysts were characterized for its physico-chemical properties. The catalytic efficiency of the supported catalysts was tested using simulated exhaust gases in a fix bed reactor. The study further explored real time testing of the catalyzed ceramic monolith using two different wood species. First, the best catalyst in terms of simulated exhaust testing was selected. Consequently, a small layer of zeolite Y was deposited at 3% of the monolith weight to enhance the subsequent adhesion of the best catalyst powder to the structured monolith. Then to catalyze the zeolite Y wash-coated monolith with the cobalt precursor, the dip coating technique was used. From the results, the average values of temperatures observed from the surveyed cook stoves using wood and plant residue as fuel were confirmed to be in the range of 203–425 °C which is considered suitable for catalysts activity. The Co/ZY catalyst showed approximately 100% CO conversion (T 100 ) at 250 °C for initial CO concentration of 1000 ppm, making it the most effective, while T 100 was increased to 275 °C and 325 °C for Fe/ZY and Co-Fe/ZY catalyst respectively at an exhaust residence time of 20000 h −1 . The catalytic converter in real time testing for CO abatement performed well for both wood species. Only minor differences have been noticed. © 2018 The AuthorsItem Community forestry in Cameroon: Insights on state institutional deficits(Trees, Forests and People, 2022) Alemagi, D.; Nukpezah, D.; Peter, M.; et al.Community forestry (CF) was set-up in Cameroon about 20 years ago to enable better environmental, economic, and social benefits for communities. Since then, 430 community forests have been attributed, covering an area of almost 1.7 million ha. However, less than a quarter (10%) are in active management or enterprise. Weak institutions have been widely cited as a leading cause of poor performance in the community forestry process. This paper examines the current state of institutional deficits in Cameroon and identifies pathways for overcoming the deficits. Our analysis is based on a rigorous review of documented experiences so far. Results obtained revealed that emerging deficits revolve around form and function. Legal; power, authority and rights; and size and biophysical potential deficits grouped under the realm of form while resources; capacity; and governance deficits were grouped under the realm of functions. Proposed solutions to these deficits point to the need to recognize and manage inter-dependencies between challenges and corresponding potential solutions. Hence, a system or integrated approach is needed to tackle the problems identified.