Toxicity in Acid Sulfate Soil, Mekong Delta, Viet Nam: Sources, Dynamics, Effect and Resolve | Chapter 9 | Current Advances in Geography, Environment and Earth Science Vol. 1

 Toxic in both the water and the soil Even with people living or surviving with low productivity, the environment is exceedingly tough for plants and animals, owing to poisons in the environment. When the soil is excavated, oxygen comes into touch with pyrite and produces pyrite. The goal of the study is to determine the source and kinetics of the harmful source, as well as to provide a solution. Toxic compounds include Al(3+),Fe(2+),Fe(3+),SO 4(2-), particularly in the case of Al(3+) at lower pH (2.04.5). Toxicants to the environment and organisms can have a variety of consequences, but they can also have combined effects. Toxic's action on the environment is quite dynamic. In soil and water, the toxicity dynamic is as follows: 1-As rice dries up, the amount of toxins in the rice increases, potentially resulting in rice death. Rather than liming without washing alum, the duty is to flood. 2- Rice can be irrigated with acid water with a pH of 3,8 (Al(3+)480ppm). The soil will become acidified after 5-6 days if it is contaminated with acid water with a pH of 2.9. 3- There is a risk of harmful effects when rainfall is less than 600 mm. However, flooding to a depth of more than 7 cm increases yield and obviously reduces contaminants. 4-Reduce contaminants by covering ground with plants and green manure. 5- Soil moisture has a significant impact on toxic variations, particularly in the organic and pyrite layers of the soil, which are highly acidified. The aluminium salt, as well as what it included At 30- 40% aluminium salt, the soil turns acidic quickly and aggressively. 6-The toxicity of the pyrite and organic layers is increased by the alternating oxidation and redox conditions. In the case of calcium insufficiency, 7-Toxins formed from sediments contain a lot of S+,Fe(2+) mangrove plant waste as well as microbiological activity in the soil. Shape the Pyrite bar next, then Jarosite, and finally sulfuric acid. 2,Al(3+) is formed when the pH of the surrounding environment is low. The ionic poisons Al(3+),Fe(2+),Fe(3+),SO 4(2-),pH 4,0 are eagerly completed by the assistance process. And 8-There is a positive link between hazardous ions, especially SO 4(2-) and Fe(2+), Al(3+), and Fe(2+).

Author(S) Details

Ba Le Huy
Ho Chi Minh City University of Food Industry, Vietnam.

Hoan Nguyen Xuan
Ho Chi Minh City University of Food Industry, Vietnam.

Phong Nguyen Tan
Ho Chi Minh City University of Food Industry, Vietnam.

Thanh Le Minh
Ho Chi Minh City University of Food Industry, Vietnam.

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