66 results for “organic nitrogen”

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Research ArticleOpen accessAll words, across the recordDrying Poultry Manure for Pollution Potential Reduction and Production of Organic FertilizerA. E. Ghaly, M. AlhattabDisposal and storage of raw poultry manure has become an environmental problem because of the associated air, water and soil pollution. Poultry manure begins to decompose immediately after excretion giving off ammonia which, in high concentrations, can have adverse effects on the health and productivity of birds as well as the health of the farm workers. Application to land is … …American Journal of Environmental Sciences, Vol. 9, Issue 2 · 13 Mar 2013 · 9,731 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordEffect of Organic Based N Fertilizer on Dry Matter (Zea mays L.), Ammonium and Nitrate Recovery in an Acid Soil of Sarawak, MalaysiaSusilawati Kasim, Osumanu Haruna Ahmed, Nik Muhamad Ab. Majid et al.Problem statement: Exchangeable ammonium (NH4+) could be recovered by humic and fulvic acids from humic substances. The ability of these acids in fixing or retaining NH4+ has been demonstrated in many findings and reports. Both acids could affect the plant growth, nutrients uptake by enhancing photosynthesis rate and root growth among others. Thus, in this study, the effect of both … …American Journal of Applied Sciences, Vol. 6, Issue 7 · 31 Jul 2009 · 8,252 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordPreliminary Evaluation of a Permeable Reactive Barrier for Reducing Groundwater Nitrate Transport from a Large Onsite Wastewater SystemCharles Humphrey, Sushama Pradhan, Eban Bean et al.A permeable reactive barrier was installed between a large Onsite Wastewater System (OWS) and a monitoring well located down-gradient from the OWS. Groundwater samples from the well had shown elevated and increasing concentrations of NO3--N (>20 mg L-1 for 2 years). The barrier was constructed using woodchips from various tree species that were placed in a trench excavated to approximately … …American Journal of Environmental Sciences, Vol. 11, Issue 4 · 25 Aug 2015 · 7,375 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordSYNTHESIS AND CHARACTERIZATIONOF ORGANIC FUNCTIONALIZED MESOPOROUS SILICA AND EVALUATE THEIR ADSORPTIVE BEHAVIOR FOR REMOVAL OF METHYLENE BLUE FROM AQUEOUS SOLUTIONSameer H. Kareem, Inaam H. Ali, M. G. JalhoomThree Mesoporous Silica (MPS) with different functional groups were prepared by one-step synthesis based on the simultaneous hydrolysis and condensation of tetraethoxy silane with organo-silane in the presence of template surfactant Polydimethylsiloxane-Polyethyleneoxide (PDMS-PEO). The prepared materials were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA) and nitrogen adsorption-desorption experiments. The results indicate that the preparation of methyl and … …American Journal of Environmental Sciences, Vol. 10, Issue 1 · 28 Feb 2014 · 7,291 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordEmission and Combustion Characteristics of Si Engine Working Under Gasoline Blended with Ethanol Oxygenated Organic CompoundsDhanapal Balaji, Periyasamy Govindarajan, Jayaraj VenkatesanProblem statement: The objective of this study is to investigate the effect of using unleaded gasoline and additives blends on Spark Ignition engine (SI engine) combustion and exhaust emission. Approach: A four stroke, single cylinder SI engine was used for conducting this study. Exhaust emissions were analysed for Carbon Monoxide (CO), Hydrocarbon (HC) and Oxides of Nitrogen (NOx) and carbon … …American Journal of Environmental Sciences, Vol. 6, Issue 6 · 31 Dec 2010 · 7,141 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordComparison of Selected Soil Chemical Properties of Two Different Mangrove Forests in SarawakEmpi Rambok, Seca Gandaseca, Osumanu Haruna Ahmed, Nik Muhamad Ab. MajidProblem statement: Despite few studies of forest health and environmental conditions of mangrove forest in Sarawak, the data was not sufficient to facilitate baseline data and direct comparison of mangrove forest health obtained for different location of mangrove forest in Sarawak. On this regard, determination of contemporary mangrove soil condition was essential to addressing mangrove forest for forest health, carbon … …American Journal of Environmental Sciences, Vol. 6, Issue 5 · 31 Oct 2010 · 9,655 accessesView PDF Cite