application of bioremediation techniques for the removal of
... The presence of pollutants with a recalcitrant nature in the environment has promoted an intense research effort focused on the development of more effective technologies for the remediation of contaminated industrial locations and effluents. These methods have been classified in thre ...
... The presence of pollutants with a recalcitrant nature in the environment has promoted an intense research effort focused on the development of more effective technologies for the remediation of contaminated industrial locations and effluents. These methods have been classified in thre ...
Guidelines for Canadian Drinking Water Quality
... Nitrate and nitrite are widespread in the environment. They are naturally produced by the oxidation of nitrogen by microorganisms and, to a lesser extent, by lightning. The most common sources of these substances are human activities, including agricultural activities, wastewater treatment, and disc ...
... Nitrate and nitrite are widespread in the environment. They are naturally produced by the oxidation of nitrogen by microorganisms and, to a lesser extent, by lightning. The most common sources of these substances are human activities, including agricultural activities, wastewater treatment, and disc ...
Wang_Natural zealots as effective absorbents
... of the surfactant molecules associate to form a bilayer or “admicelle” as shown in Fig. 1 [48]. Thus, surfactant-modified zeolite can have a complex functional groups for positively charged exchange sites formed by the positive groups –NR+ of the surfactant directed towards the surrounding solution i ...
... of the surfactant molecules associate to form a bilayer or “admicelle” as shown in Fig. 1 [48]. Thus, surfactant-modified zeolite can have a complex functional groups for positively charged exchange sites formed by the positive groups –NR+ of the surfactant directed towards the surrounding solution i ...
Environmentally and Economically Feasibility Manufacturing
... [10]. As point of view potassium nitrate has more demand on chemical industries all around the world. In open literature different author has been suggested for the production of potassium nitrate [11-13], are not good for environmental and economical point of view by one or another way. So it is re ...
... [10]. As point of view potassium nitrate has more demand on chemical industries all around the world. In open literature different author has been suggested for the production of potassium nitrate [11-13], are not good for environmental and economical point of view by one or another way. So it is re ...
PDF
... [10]. As point of view potassium nitrate has more demand on chemical industries all around the world. In open literature different author has been suggested for the production of potassium nitrate [11-13], are not good for environmental and economical point of view by one or another way. So it is re ...
... [10]. As point of view potassium nitrate has more demand on chemical industries all around the world. In open literature different author has been suggested for the production of potassium nitrate [11-13], are not good for environmental and economical point of view by one or another way. So it is re ...
Characterization of nitrifying bacteria in marine recirculation
... emphasis on the possible causes of malfunction of the crucial conversion of ammonia to nitrate. Three marine RAS with in total five moving-bed biofilters were made available for the investigations by project partners. Nitrospira was identified as the major autotrophic nitrite oxidizer (NOB) in one o ...
... emphasis on the possible causes of malfunction of the crucial conversion of ammonia to nitrate. Three marine RAS with in total five moving-bed biofilters were made available for the investigations by project partners. Nitrospira was identified as the major autotrophic nitrite oxidizer (NOB) in one o ...
Isolation of Thiobacillus sp from aerobic sludge of distillery and dairy
... need to develop processes for sulfide removal from wastewater because of its toxicity, corrosive properties, bad odour and high oxygen demand (WHO, 1981; Nath et al., 2005; Singh, 2007). Sulfide emitted into the environment is of two forms, free sulfides in the form of H2S and dissolved sulfides in ...
... need to develop processes for sulfide removal from wastewater because of its toxicity, corrosive properties, bad odour and high oxygen demand (WHO, 1981; Nath et al., 2005; Singh, 2007). Sulfide emitted into the environment is of two forms, free sulfides in the form of H2S and dissolved sulfides in ...
2. The Ozone 35 2. The ozone
... production capacity with air, depending on the design parameters (for example, gas discharge gap and current frequency). The nominal design capacity at which operation can be performed on a permanent basis must be considered to be at least 20 to 30 percent. The yield obtained when using an oxygen-en ...
... production capacity with air, depending on the design parameters (for example, gas discharge gap and current frequency). The nominal design capacity at which operation can be performed on a permanent basis must be considered to be at least 20 to 30 percent. The yield obtained when using an oxygen-en ...
introduction - Alberta Agriculture and Forestry
... Phosphorus in Soil In soil, not all phosphorus is the same. It can be either part of organic or inorganic molecules. In addition, the molecules that contain phosphorus will change in the soil through nutrient cycling. Phosphorus inputs to the soil for agricultural purposes are primarily from the app ...
... Phosphorus in Soil In soil, not all phosphorus is the same. It can be either part of organic or inorganic molecules. In addition, the molecules that contain phosphorus will change in the soil through nutrient cycling. Phosphorus inputs to the soil for agricultural purposes are primarily from the app ...
Use of ozone in the food industry
... countries for a long time. Ultraviolet radiation (188 nm wavelength) and corona discharge methods can be used to generate ozone. The bactericidal effects of ozone have been documented on a wide variety of organisms, including Gram positive and Gram negative bacteria as well as spores and vegetative ...
... countries for a long time. Ultraviolet radiation (188 nm wavelength) and corona discharge methods can be used to generate ozone. The bactericidal effects of ozone have been documented on a wide variety of organisms, including Gram positive and Gram negative bacteria as well as spores and vegetative ...
SOLID WASTE MANAGEMENT: NEW TRENDS IN LANDFILL DESIGN
... a landfill by promoting optimum moisture content and sufficient nutrients for the microorganisms to degrade the waste. The method not only enhances the degradation processes, but also stabilizes the landfill as quickly as possible. Landfill stabilization means that the environmental performance para ...
... a landfill by promoting optimum moisture content and sufficient nutrients for the microorganisms to degrade the waste. The method not only enhances the degradation processes, but also stabilizes the landfill as quickly as possible. Landfill stabilization means that the environmental performance para ...
Circular Economy of Phosphorus Flow
... At first, different types of phosphorus losses were looked at. Schröder et al. (2010, 31f) classified them into two groups, namely permanent losses, which imply a phosphorus flux that is exported from the entire food production and consumption system, and temporary losses, which are temporarily lost ...
... At first, different types of phosphorus losses were looked at. Schröder et al. (2010, 31f) classified them into two groups, namely permanent losses, which imply a phosphorus flux that is exported from the entire food production and consumption system, and temporary losses, which are temporarily lost ...
PDF 50 - The Open University
... Unless otherwise stated, this resource is released under the terms of the Creative Commons Licence v4.0 http://creativecommons.org/licenses/by-nc-sa/4.0/deed.en_GB. Within that The Open University interprets this licence in the following way: www.open.edu/openlearn/about-openlearn/frequently-asked-q ...
... Unless otherwise stated, this resource is released under the terms of the Creative Commons Licence v4.0 http://creativecommons.org/licenses/by-nc-sa/4.0/deed.en_GB. Within that The Open University interprets this licence in the following way: www.open.edu/openlearn/about-openlearn/frequently-asked-q ...
Text A: Nitrogen circulates through Earth`s environment in several
... Not all of the nitrogen fertilizer applied to agricultural fields stays to nourish crops. Some is washed off of agricultural fields by rain or irrigation water, where it leaches into surface or ground water and can accumulate. In groundwater that is used as a drinking water source, excess nitrogen ...
... Not all of the nitrogen fertilizer applied to agricultural fields stays to nourish crops. Some is washed off of agricultural fields by rain or irrigation water, where it leaches into surface or ground water and can accumulate. In groundwater that is used as a drinking water source, excess nitrogen ...
INCA : summary and conclusions
... then given to how well the model has performed and future research requirements are outlined. Keywords: nitrogen, nitrate, ammonium, organic nitrogen, catchments, streams, rivers, river basins ...
... then given to how well the model has performed and future research requirements are outlined. Keywords: nitrogen, nitrate, ammonium, organic nitrogen, catchments, streams, rivers, river basins ...
Manure Liquid-solid Separation Factors That Determine System
... separation can supply the lower-solids-content liquid to irrigation systems that use small diameter, plug-prone nozzles. Lengthen interval between sludge cleanout of liquid treatment systems. Inconvenient and expensive de-sludging operations can be postponed by using settling tanks or other simple ...
... separation can supply the lower-solids-content liquid to irrigation systems that use small diameter, plug-prone nozzles. Lengthen interval between sludge cleanout of liquid treatment systems. Inconvenient and expensive de-sludging operations can be postponed by using settling tanks or other simple ...
Anammox bacteria disguised as denitrifiers: nitrate reduction to
... and bacterial haemoglobin (CAJ72702). Homologues of these genes were shown to be involved in NO detoxification in other bacteria and the end-product was also N2O (Wu et al., 2003). Furthermore, hydroxylamine oxidoreductase (of which more than eight paralogues are encoded in the K. stuttgartiensis ge ...
... and bacterial haemoglobin (CAJ72702). Homologues of these genes were shown to be involved in NO detoxification in other bacteria and the end-product was also N2O (Wu et al., 2003). Furthermore, hydroxylamine oxidoreductase (of which more than eight paralogues are encoded in the K. stuttgartiensis ge ...
Stormwater Manufactured Treatment Devices
... Stormwater Manufactured Treatment Devices (MTDs) Type 1 Use MTD Type 1 (separation devices, also referred to as hydrodynamic separators) designed and sized to treat, at a minimum, the stormwater runoff from the 1.8-inch, 1-year, 24-hour storm event, to prevent pollutants from being transported downs ...
... Stormwater Manufactured Treatment Devices (MTDs) Type 1 Use MTD Type 1 (separation devices, also referred to as hydrodynamic separators) designed and sized to treat, at a minimum, the stormwater runoff from the 1.8-inch, 1-year, 24-hour storm event, to prevent pollutants from being transported downs ...
Biogas – Green Energy Process, Design, Energy
... As mentioned earlier, the methanogens need an oxygen-free environment – they are obligately anaerobic. A biogas reactor therefore has to be airtight. The small amount of oxygen dissolved in the liquid/biomass fed to the plant is quickly used up by, for example, aerobic bacteria that must have oxygen ...
... As mentioned earlier, the methanogens need an oxygen-free environment – they are obligately anaerobic. A biogas reactor therefore has to be airtight. The small amount of oxygen dissolved in the liquid/biomass fed to the plant is quickly used up by, for example, aerobic bacteria that must have oxygen ...
The Nitrogen Cycle
... population, but the increase in nitrogen fixation has had some negative consequences as well. While the consequences are perhaps not as obvious as an increase in global temperatures or a hole in the ozone layer, they are just as serious and potentially harmful for humans and other organisms. Not all ...
... population, but the increase in nitrogen fixation has had some negative consequences as well. While the consequences are perhaps not as obvious as an increase in global temperatures or a hole in the ozone layer, they are just as serious and potentially harmful for humans and other organisms. Not all ...
Providing Nitrogen to Organic Crops
... more nitrogen than you can supply with your rotation. However, you must have a crop ready soon to capture the nitrate as they have relatively low C:N ratios and produce nitrate more quickly than something like alfalfa pellets. Alfalfa pellets have a moderate C:N ratio and release nitrate at a steady ...
... more nitrogen than you can supply with your rotation. However, you must have a crop ready soon to capture the nitrate as they have relatively low C:N ratios and produce nitrate more quickly than something like alfalfa pellets. Alfalfa pellets have a moderate C:N ratio and release nitrate at a steady ...
NH4 ratio and the nitrogen loading rate on the stability of ANAMMOX
... The potential inhibitory effect of nitrite on anammox bacteria remains one of the difficulties in the application of the anammox process. Neither the mechanism by which it occurs nor the conditions under which nitrite affects the performance of continuous bioreactors, have been elucidated. The perfo ...
... The potential inhibitory effect of nitrite on anammox bacteria remains one of the difficulties in the application of the anammox process. Neither the mechanism by which it occurs nor the conditions under which nitrite affects the performance of continuous bioreactors, have been elucidated. The perfo ...
Extract from EPA Batneec Guidance Note For The Extraction of
... As explained in Section 2, this Guidance Note identifies BATNEEC but obviously does so in the absence of site-specific information. Accordingly, it represents the requirements expected of any new activity covered by the Note, but does not exclude additional requirements which may form part of the gr ...
... As explained in Section 2, this Guidance Note identifies BATNEEC but obviously does so in the absence of site-specific information. Accordingly, it represents the requirements expected of any new activity covered by the Note, but does not exclude additional requirements which may form part of the gr ...
PDF w - Potters Without Borders
... has been teaching communities to manufacture and distribute their water filters that retail for $5–15 (U.S. $). The filters look like simple ceramic pots. The filter pots are suspended in 5-gallon plastic containers. Water is then poured into the filter pot and flows by gravity through the ceramic f ...
... has been teaching communities to manufacture and distribute their water filters that retail for $5–15 (U.S. $). The filters look like simple ceramic pots. The filter pots are suspended in 5-gallon plastic containers. Water is then poured into the filter pot and flows by gravity through the ceramic f ...
Impact of varying electron donors on the molecular microbial
... M26(5/24), which was most closely related to uncultured bacteria from uranium mining waste piles (AJ 532690) (Selenska-Pobell et al., 2002) was not pursued further owing to its presumed limited relevance to methylotrophic denitrification in activated sludge systems. The remaining SBR populations did ...
... M26(5/24), which was most closely related to uncultured bacteria from uranium mining waste piles (AJ 532690) (Selenska-Pobell et al., 2002) was not pursued further owing to its presumed limited relevance to methylotrophic denitrification in activated sludge systems. The remaining SBR populations did ...
Sewage treatment
Sewage treatment is the process of removing contaminants from wastewater, primarily from household sewage. It includes physical, chemical, and biological processes to remove these contaminants and produce environmentally safe treated wastewater (or treated effluent). A by-product of sewage treatment is usually a semi-solid waste or slurry, called sewage sludge, that has to undergo further treatment before being suitable for disposal or land application.Sewage treatment may also be referred to as wastewater treatment, although the latter is a broader term which can also be applied to purely industrial wastewater. For most cities, the sewer system will also carry a proportional of industrial effluent to the sewage treatment plant which has usually received pretreatment at the factories themselves to reduce the pollutant load. If the sewer system is a combined sewer then it will also carry urban runoff (stormwater) to the sewage treatment plant.