Abstract: The unsustainability of conventional energy resources and their associated environmental pollutions made renewable energy the prime need of present time. Therefore, the research was conducted to investigate the production of biogas from Striga hermonthica co-digested with cow manure through anaerobic digestion with five treatment mix ratios were evaluated under mesophilic conditions (38ºC) using batch digesters in the Botanical laboratory of Haramaya University for 30 days of ferm...
Abstract: Production of biogas through anaerobic digestion of organic waste materials provides an alternative eco-friendly renewable energy source. With the aim of biogas production from codigestion of Cow dung and Ricinus communis leaves, a series of experiments were carried out under mesophilic conditions at 38 ºC using batch fermentation for 30 days. Anaerobic fermentation were carried out by mixing the substrates in five different proportions to obtain suitable mix ratio for maximum bio...
Abstract: Common beans are grown throughout Ethiopia and an increasingly important commodity in the cropping systems of smallholder producers both for food security and income. However, its production is affected by climate change particularly by intensive drought occurrence. The study of genetic variability under moisture stress areas enables selection of drought tolerant genotypes that would give better yields to ensure food security, especially for poor rural farmers. Therefore, this stud...
Abstract Recently, the world has begun to experience depletion in energy resources and this issue has become a major concern. Sudan faces a problem with limited fossil fuel resources and an increase in waste accumulation as population growth and economic development play an important role in increasing solid waste generation in addition to increasing energy demand. Sudan is one of the most densely populated countries in Africa, with an annual growth of 2%. We find that about 20% of the popul...
ABSTRACT Sawdust is a major waste produced by the wood industry. Adding value to sawdust through composting is one of the surest means by which environmental pollution could be minimized. About 500 kg of softwood and hardwood sawdust were separately mixed with mucuna leaves and kitchen waste in the ratio of 3:1:1 on weight basis and heaped using effluent from abattoir to develop composts. Objectives of the study were to monitor changes in the physico-chemical properties, NH4 + ‒ N, NO3 ‒ ...
ABSTRACT A survey of, the mycoflora of three seed lots of Pinus caribaea var. hondurensis was carried out using the incubation tests for the detection of seed-borne fungi on agricultural seeds. The seed-borne fungi identified were: t Acromonium sp., Aspergillus flatus, fumigatus,! A. niger, A. tamarii, Botrvtis sp., BotryQdiplQd.i.a theobromae, Chaetomium funicola, £. globosum, £. indiCUTO, Cladosporium oxvsporum, Pendrophpma sp., Fysa.riym ecruiseti, F. moniliforme var. intermedium, Gii-pc...
ABSTRACT This study comparatively analysed biogas production from three waste materials: Grass - Axonopus compressus, cow dung and pig waste slurry, with respect to the effects of carbon/nitrogen (C:N) ratio on biogas yield. A mixing ratio of 1:10 (one (1) part of substrate to ten (10) parts of water) was used. Nine 2L plastic digesters, were used for the study. Digestion was carried out in triplicates, 3 digesters for each substrate. The C:N ratios of the substrates were as follows: Axonop...