Making Waste More Useful
Investigation 7: How Can The Waste Be Made Useful?
February 20, 2014
Mian Yang
Tuesday 8:30am
Group #6
Steven Hengen, Joe Wahl, Colleen Strom, Nicole D
Introduction:
Chemical interactions can often lead to the production of environmentally unsafe byproducts. If the byproducts have no use, they are disposed as waste. Waste disposal companies make profit by collecting and disposing large amounts of these unused byproducts. These companies often concentrate the byproduct solutions so that they are easier to dispose of. One particular chemical waste disposal company wishes to utilize these concentrated byproduct solutions to create potentially useful solids (Bauer 45). It was the lab group’s goal to design procedures for creating these useful solids out of the concentrated byproduct solutions. The concentrated byproduct solutions provided by the company were: 0.1 M of NaOH, H2SO4, BaCl, HCl, AgNO3, and Zn(NO3)2. With the byproduct solutions given, four different useful solids could be created. These solids are: Na2SO4, BaSO4, AgCl, and Zn(OH)2. Potential commercial uses for these particular solids are discussed in the “discussion” section of this report. The type of chemical reactions utilized to create these solids included: a neutralization reaction to create Na2SO4, and precipitation reactions to create BaSO4, AgCl, and Zn(OH)2. The solids created by the precipitation reactions were separated using a centrifuge. In contrast, the Na2SO4, was isolated by using heat to boil off the water it with.
Procedures: The materials used in the investigation were test tubes, a porcelain well, a centrifuge, a Bunsen burner, and reagents to be used for synthesis of four compounds. The compound were Na2SO4, AgCl, BaSO4, and ZN(OH)2. The reagents used to synthesize these compounds were NaOH, H2SO4, BaCl2, Zn(NO3)2, AgNO3, and HCl, all .1M concentrations in aqueous solution. The groups then identified the isolation method to be used on each one of the compounds. The
February 20, 2014
Mian Yang
Tuesday 8:30am
Group #6
Steven Hengen, Joe Wahl, Colleen Strom, Nicole D
Introduction:
Chemical interactions can often lead to the production of environmentally unsafe byproducts. If the byproducts have no use, they are disposed as waste. Waste disposal companies make profit by collecting and disposing large amounts of these unused byproducts. These companies often concentrate the byproduct solutions so that they are easier to dispose of. One particular chemical waste disposal company wishes to utilize these concentrated byproduct solutions to create potentially useful solids (Bauer 45). It was the lab group’s goal to design procedures for creating these useful solids out of the concentrated byproduct solutions. The concentrated byproduct solutions provided by the company were: 0.1 M of NaOH, H2SO4, BaCl, HCl, AgNO3, and Zn(NO3)2. With the byproduct solutions given, four different useful solids could be created. These solids are: Na2SO4, BaSO4, AgCl, and Zn(OH)2. Potential commercial uses for these particular solids are discussed in the “discussion” section of this report. The type of chemical reactions utilized to create these solids included: a neutralization reaction to create Na2SO4, and precipitation reactions to create BaSO4, AgCl, and Zn(OH)2. The solids created by the precipitation reactions were separated using a centrifuge. In contrast, the Na2SO4, was isolated by using heat to boil off the water it with.
Procedures: The materials used in the investigation were test tubes, a porcelain well, a centrifuge, a Bunsen burner, and reagents to be used for synthesis of four compounds. The compound were Na2SO4, AgCl, BaSO4, and ZN(OH)2. The reagents used to synthesize these compounds were NaOH, H2SO4, BaCl2, Zn(NO3)2, AgNO3, and HCl, all .1M concentrations in aqueous solution. The groups then identified the isolation method to be used on each one of the compounds. The
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