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[A study about the interrelation between the pH values of solid wastes and extracting solvents]
1Hangzhou Environmental Monitoring Center, Hangzhou 310007, China.
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|August 28, 2003
Summary
The pH of solid waste and extracting solvents significantly impacts trace metal dissolution. Acidic waste in low pH solvents releases the most metals, highlighting risks from acid rain.
Area of Science:
- Environmental Chemistry
- Geochemistry
Context:
- Solid waste management poses environmental challenges.
- Trace metal leaching from waste is a significant concern.
Purpose:
- To investigate the relationship between solid waste pH, extracting solvent pH, and trace metal dissolution.
- To understand the influence of metal compound formation on leaching.
Summary:
- Dissolved trace metal quantities varied with solid waste and solvent pH.
- Acidic wastes in low pH (2-4) solvents showed high metal dissolution.
- Metal dissolution peaked in pH 4-8 solvents for acidic wastes.
Impact:
- Highlights environmental risks of acid rain interacting with improperly stored waste.
- Suggests establishing regional environmental standards based on local precipitation pH.
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