Oxidation of urea‐derived nitrogen by thaumarchaeota‐dominated
... October (20.0 6 8.8 nmol L21 d21; Mann-Whitney U test p < 0.001; Fig. 1, Table 1, Table S1). Rates of 15N-ammonia oxidation (19.4 6 4.8 nmol L21 d21) in samples from continental shelf and slope waters collected west of the Antarctic Peninsula (Fig. S1) during summer (January) were not different from ...
... October (20.0 6 8.8 nmol L21 d21; Mann-Whitney U test p < 0.001; Fig. 1, Table 1, Table S1). Rates of 15N-ammonia oxidation (19.4 6 4.8 nmol L21 d21) in samples from continental shelf and slope waters collected west of the Antarctic Peninsula (Fig. S1) during summer (January) were not different from ...
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... higher the yield of KNO3 in this initial reaction, but potassium chloride also tends to precipitate. Of course, the more water used the lower the yield of potas sium nitrate. Following precipitation of potassium nitrate, a calcium chloride brine remains containing in weight percent, in addition to w ...
... higher the yield of KNO3 in this initial reaction, but potassium chloride also tends to precipitate. Of course, the more water used the lower the yield of potas sium nitrate. Following precipitation of potassium nitrate, a calcium chloride brine remains containing in weight percent, in addition to w ...
Vanadium - Canadian Environmental Quality Guidelines
... Vanadium (+2) and vanadium (+3) salts are strong reducing agents and are readily oxidized in air (API 1985). Vanadium (+4) and vanadium (+5) are usually found bonded to oxygen as a negatively charged polymeric oxyanion that tends to complex with polarizable ligands such as phosphorus and sulphur (WH ...
... Vanadium (+2) and vanadium (+3) salts are strong reducing agents and are readily oxidized in air (API 1985). Vanadium (+4) and vanadium (+5) are usually found bonded to oxygen as a negatively charged polymeric oxyanion that tends to complex with polarizable ligands such as phosphorus and sulphur (WH ...
DDT uptake by arbuscular mycorrhizal alfalfa and depletion in soil
... A loamy soil was collected from the surface (0e15 cm depth) of an experimental field at Beijing Academy of Agriculture and Forest Sciences. The selected characteristics are as follows: silt, 45%; clay, 23%; sand, 32%; pH, 7.74 (1:2, soil/water); organic matter, 2.7%; NaHCO3-extractable P, 3.9 mg kg ...
... A loamy soil was collected from the surface (0e15 cm depth) of an experimental field at Beijing Academy of Agriculture and Forest Sciences. The selected characteristics are as follows: silt, 45%; clay, 23%; sand, 32%; pH, 7.74 (1:2, soil/water); organic matter, 2.7%; NaHCO3-extractable P, 3.9 mg kg ...
Rangeland Ecology and Management 66(4): 445-453
... mm and 3–6 mm) using a modified slake test (Herrick et al. 2001), which is a visual estimation of how readily a small soil sample falls apart when submersed in water. The soil sample was placed on a sieve with 1.5-mm openings and set into water for 5 min followed by five gentle dipping cycles. Struc ...
... mm and 3–6 mm) using a modified slake test (Herrick et al. 2001), which is a visual estimation of how readily a small soil sample falls apart when submersed in water. The soil sample was placed on a sieve with 1.5-mm openings and set into water for 5 min followed by five gentle dipping cycles. Struc ...
Assessing soil quality and interpreting soil test results
... Soil salinity refers to the presence of soluble salts within the root zone. Tree growth, crop production and fruit quality can be affected through osmotic and/or ionic processes (see Figure 6). If the concentration of soluble salts is high enough, the tree’s ability to take up water and nutrients ma ...
... Soil salinity refers to the presence of soluble salts within the root zone. Tree growth, crop production and fruit quality can be affected through osmotic and/or ionic processes (see Figure 6). If the concentration of soluble salts is high enough, the tree’s ability to take up water and nutrients ma ...
CHAPTER 5 The impact of aquifer intensive use on groundwater
... water supplies). Special attention should be paid to methods of groundwater sampling, because ferric oxyhydroxides precipitate in the presence of air. Iron-bearing groundwaters also support the growth of iron bacteria. They may be introduced into production wells during drilling processes, through d ...
... water supplies). Special attention should be paid to methods of groundwater sampling, because ferric oxyhydroxides precipitate in the presence of air. Iron-bearing groundwaters also support the growth of iron bacteria. They may be introduced into production wells during drilling processes, through d ...
Control of Hydrogen Sulfide from Groundwater Using Packed
... Figure 28. Effectiveness of Aeration, Anion Exchange, and Oxidation for Reduction of Hydrogen Sulfide and Chlorine Demand Associated .............. 74 Figure 29. Impact of Aeration, Anion Exchange, and Oxidation on Organic Carbon (TOC) and Sulfate Levels in Treated Water ........................... ...
... Figure 28. Effectiveness of Aeration, Anion Exchange, and Oxidation for Reduction of Hydrogen Sulfide and Chlorine Demand Associated .............. 74 Figure 29. Impact of Aeration, Anion Exchange, and Oxidation on Organic Carbon (TOC) and Sulfate Levels in Treated Water ........................... ...
Isolation of Thiobacillus sp from aerobic sludge of distillery and dairy
... Results and Discussion Sulfide oxidation by IICT-SOB-DAIRY-201 at different initial sulfide concentration: Fig. 1 shows the oxidation of sulfide and sulfate formation with time by IICT-SOB-DAIRY-201 at two different initial sulfide concentrations in a batch reactor. From the Fig. it is evident that, ...
... Results and Discussion Sulfide oxidation by IICT-SOB-DAIRY-201 at different initial sulfide concentration: Fig. 1 shows the oxidation of sulfide and sulfate formation with time by IICT-SOB-DAIRY-201 at two different initial sulfide concentrations in a batch reactor. From the Fig. it is evident that, ...
Inorganics and Recycling Potential in the Aqueous Phase
... concentrated H2SO4. The tube was capped and inverted several times to ensure a well-mixed solution. ...
... concentrated H2SO4. The tube was capped and inverted several times to ensure a well-mixed solution. ...
Development of an NDIR CO2 Sensor
... technologies to rapidly assess the scope and level of PHC pollution at a relatively low cost and within a short time provides a means of improving management decisions for site remediation. Common approaches to determine the total concentration of hydrocarbon pollutants in soil focus on sophisticate ...
... technologies to rapidly assess the scope and level of PHC pollution at a relatively low cost and within a short time provides a means of improving management decisions for site remediation. Common approaches to determine the total concentration of hydrocarbon pollutants in soil focus on sophisticate ...
Removal of polycyclic aromatic hydrocarbons (PAHs) from
... Statutory Order no. 56 of 24 January 2000, impose quality criteria for sewage sludge to be used as field fertilizers. One of the most important groups of compounds that are regulated is polycyclic aromatic hydrocarbons (PAHs). PAHs are persistent, widespread, and can have a negative influence on bio ...
... Statutory Order no. 56 of 24 January 2000, impose quality criteria for sewage sludge to be used as field fertilizers. One of the most important groups of compounds that are regulated is polycyclic aromatic hydrocarbons (PAHs). PAHs are persistent, widespread, and can have a negative influence on bio ...
Digital mapping of soil carbon
... There is a global demand for soil data and information for food security and global environmental management. This is also a large interest in recognizing the soil system as a significant terrestrial sink of carbon. The reliable assessment and monitoring of soil carbon stocks is of key importance fo ...
... There is a global demand for soil data and information for food security and global environmental management. This is also a large interest in recognizing the soil system as a significant terrestrial sink of carbon. The reliable assessment and monitoring of soil carbon stocks is of key importance fo ...
potassium - ICL Fertilizers
... Both red and white potash are chemically the same salt: potassium chloride (KCl) Both have equal amounts of potassium (60 %) and chloride (47%) Both are highly water soluble, being of equivalent agronomic effectiveness ...
... Both red and white potash are chemically the same salt: potassium chloride (KCl) Both have equal amounts of potassium (60 %) and chloride (47%) Both are highly water soluble, being of equivalent agronomic effectiveness ...
albatross species demonstrate regional differences in north pacific
... not responsible for the observed differences in organic contaminant concentrations between these two species. We believe the route of contaminant exposure for both albatross species is via their diet (nonpoint source) as opposed to a contaminated point source because the measured organochlorines (DD ...
... not responsible for the observed differences in organic contaminant concentrations between these two species. We believe the route of contaminant exposure for both albatross species is via their diet (nonpoint source) as opposed to a contaminated point source because the measured organochlorines (DD ...
INTRODUCTION Organic matter in soils and sediments is widely
... with those estimated by the LOI for C conversion factor of 1.724 and 2.2. The SOM content by these two methods were relatively comparable when 3.3 was used as the C conversion factor. In contrast, the SOM contents predicted by WB and H2O2were fairly comparable at C conversion factor of 2.2. As repor ...
... with those estimated by the LOI for C conversion factor of 1.724 and 2.2. The SOM content by these two methods were relatively comparable when 3.3 was used as the C conversion factor. In contrast, the SOM contents predicted by WB and H2O2were fairly comparable at C conversion factor of 2.2. As repor ...
bioremediation - UniMAP Portal
... plants to degrade chemical compounds Bioremediation – process of cleaning up environmental sites contaminated with chemical pollutants by using living organisms to degrade hazardous materials into less toxic substances ...
... plants to degrade chemical compounds Bioremediation – process of cleaning up environmental sites contaminated with chemical pollutants by using living organisms to degrade hazardous materials into less toxic substances ...
Importance of soil conditioners/Amendments under INM
... system with reduced plant growth, lower vigor, and lower stress tolerance. ...
... system with reduced plant growth, lower vigor, and lower stress tolerance. ...
Chapter 5
... As a soil develops from the surface downward, an identifiable succession of approximately horizontal weathered zones, called soil horizons, forms. The soil horizons constitute a soil profile. The uppermost horizon may be a surface accumulation of organic matter (O horizon). An A horizon may either u ...
... As a soil develops from the surface downward, an identifiable succession of approximately horizontal weathered zones, called soil horizons, forms. The soil horizons constitute a soil profile. The uppermost horizon may be a surface accumulation of organic matter (O horizon). An A horizon may either u ...
Chapter 6: Weathering and Soils
... carbonate, is attacked by dissolution and hydrolysis, it is readily dissolved, leaving behind only the nearly insoluble impurities (chiefly clay and quartz) that are always present in small amounts in the rock. ...
... carbonate, is attacked by dissolution and hydrolysis, it is readily dissolved, leaving behind only the nearly insoluble impurities (chiefly clay and quartz) that are always present in small amounts in the rock. ...
Organochlorine compounds in wastewater
... affected by the choice of bleaching chemicals, and the industry’s shift from chlorine bleaching to ECF bleaching has altered wastewater characteristics. Chlorinated organic by-products of chemical pulp bleaching that are the most toxic and recalcitrant to wastewater treatment are chlorinated dioxins ...
... affected by the choice of bleaching chemicals, and the industry’s shift from chlorine bleaching to ECF bleaching has altered wastewater characteristics. Chlorinated organic by-products of chemical pulp bleaching that are the most toxic and recalcitrant to wastewater treatment are chlorinated dioxins ...
NH -N removal from groundwater using attached growth reactor: Wilawan Khanitchaidecha
... Ca2+ 33.9, IC 30.0 and PO4-P 0.01), the synthetic groundwater was prepared and detailed in the previous study [7]. In addition, the NH4-N concentration was fixed at 30 mg/L. Synthetic2: More NaHCO3 and Na2HPO4⋅12H2O added to this groundwater rather than Synthetic1 to maintain the excess IC and PO4-P ...
... Ca2+ 33.9, IC 30.0 and PO4-P 0.01), the synthetic groundwater was prepared and detailed in the previous study [7]. In addition, the NH4-N concentration was fixed at 30 mg/L. Synthetic2: More NaHCO3 and Na2HPO4⋅12H2O added to this groundwater rather than Synthetic1 to maintain the excess IC and PO4-P ...
prediction of concentration profiles of contaminants in groundwater
... difference approach implemented in Matlab 7.0. The concentration profiles for organic and inorganic pollutants indicated similar profiles, rising to a maximum with time and distance from the landfill. Three dimensional images were generated for the concentration profiles of all the contaminants. The ...
... difference approach implemented in Matlab 7.0. The concentration profiles for organic and inorganic pollutants indicated similar profiles, rising to a maximum with time and distance from the landfill. Three dimensional images were generated for the concentration profiles of all the contaminants. The ...
Identifying Bioaccumulative Halogenated Organic Compounds
... mass spectrometry (GC×GC/TOF-MS) was used to characterize persistent, bioaccumulative, and potentially toxic HOCs in the samples. This method has been used to successfully analyze compounds in Atlantic common dolphin blubber and fish oil [10, 11]. While various marine species have been used as envir ...
... mass spectrometry (GC×GC/TOF-MS) was used to characterize persistent, bioaccumulative, and potentially toxic HOCs in the samples. This method has been used to successfully analyze compounds in Atlantic common dolphin blubber and fish oil [10, 11]. While various marine species have been used as envir ...
Degradation kinetics of Diclofenac in Water by Fenton`s Oxidation
... Diclofenac (DCF) is a non-steroidal anti-inflammatory drug (NAID) most prevalently used as analgesic, anti-arthritic and anti-rheumatic and about 15% is excreted unchanged after human consumption [1]. Though it has been confirmed that diclofenac is rapidly degraded by direct photolysis under normal ...
... Diclofenac (DCF) is a non-steroidal anti-inflammatory drug (NAID) most prevalently used as analgesic, anti-arthritic and anti-rheumatic and about 15% is excreted unchanged after human consumption [1]. Though it has been confirmed that diclofenac is rapidly degraded by direct photolysis under normal ...