Abstract
Nitrogen is emitted extensively by industrial companies, increasing nitrogen compounds such as ammonia, nitrate, and nitrite in soil and water as a result of nitrogen cycle reactions. Groundwater contamination with nitrates and nitrites impacts human health. Mathematical models can explain groundwater contamination with nitrates and nitrites. Hydraulic head model provides the hydraulic head of groundwater. Groundwater velocity model provided x- and y- direction vector in groundwater. Groundwater contamination distribution model provides nitrogen, nitrate and nitrite concentration. Finite difference techniques are approximate the models solution. Alternating direction explicit method was used to clarify hydraulic head model. Centered space explained groundwater velocity model. Forward time central space was used to predict groundwater transportation of contamination models. We simulate different circumstances to explain the pollution in leachate water underground, paying attention to the toxic nitrogen, ammonia, nitrate, nitrite blended in the water.
Highlights
Water pollution is a worldwide issue created by development of population and economic growth
Microorganisms are important as converters of soil ammonia into nitrates, in the nitrogen cycle, which can be used by plants
Dietary nitrate is converted to nitrite through a non-enzymatic process and nitric oxide (N O) by symbiotic bacteria in the oral cavity and stomach, which forms several compounds with different effects in the body
Summary
Water pollution is a worldwide issue created by development of population and economic growth. Dietary nitrate is converted to nitrite through a non-enzymatic process and nitric oxide (N O) by symbiotic bacteria in the oral cavity and stomach, which forms several compounds with different effects in the body. Nitrite reacts with amines and amides, present in proteins from the diet or from medications, to form N nitrosamines and N nitrosamides These compounds damage DNA and cause birth. The model was used to define nitrogen, ammonia, nitrate, nitrite for the allocation of groundwater contamination. We simulated various conditions to explain the pollution in subterranean leachate water, considering the toxic nitrogen, ammonia, nitrates and nitrites mixed in water
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