29.5 29.6 What is the purpose of digestion 400-mL In the determination of sulfate concentration by the gravimetric procedure, a sample yielded 0.0360 g of BaSO4(s). How many mg/L of sulfate was in the sample? procedure be followed each time an analysis is made for TIL
29.5 29.6 What is the purpose of digestion 400-mL In the determination of sulfate concentration by the gravimetric procedure, a sample yielded 0.0360 g of BaSO4(s). How many mg/L of sulfate was in the sample? procedure be followed each time an analysis is made for TIL
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Please solve this question 29.6

Transcribed Image Text:**Understanding Sulfate Concentration in Water Supplies and Wastewater Management**
High sulfate concentration in water supplies and wastewater is a critical concern in environmental engineering due to its impacts on treatment processes, corrosion, and organic matter degradation. Here are some key points and problems to consider regarding sulfate concentrations:
**Key Concepts**
1. **Significance of High-Sulfate Concentration:**
High-sulfate levels can disrupt methanogenic processes in wastewater treatment. Sulfate-reducing bacteria can hinder methanogenesis, leading to challenges in the anaerobic degradation of chlorinated solvents.
2. **Impact on Wastewater Treatment:**
The presence of sulfate affects both aerobic and anaerobic treatment processes, releasing sulfur mostly as sulfide. This impacts treatment efficacy and requires specialized handling to avoid inhibiting microbial processes.
**Problems for Exploration**
29.1 Explore the implications of high sulfate levels in water supplies and how they affect wastewater disposal.
29.2 Identify the simultaneous conditions required for "crown" corrosion in sewers.
29.3 Review the analytical methods available for sulfate analysis in water samples.
29.4 Discuss precautions necessary to ensure accurate sulfate gravimetric analysis.
29.5 Identify the purpose of digestion in sulfate gravimetric analysis.
29.6 Calculate sulfate concentration in a sample given gravimetric data.
29.7 Understand the necessity for consistent procedural methods in turbimetric sulfate analysis.
29.8 Examine the role of conditioning reagents in sulfate turbimetric determinations.
29.9 Analyze why the methylthymol blue method changes color with increased sulfate.
29.10 Calculate sulfide proportions at varying pH levels using equilibrium considerations.
29.11 Determine the reasons an engineer would focus on sulfate content in anaerobic wastewater treatment.
**Research Reference**
Clesceri, L. S., A. E. Greenberg, and A. D. Eaton (eds.): “Standard Methods for the Examination of Water and Wastewater,” 20th ed., American Public Health Association, Washington, DC, 1998.
These problems and concepts provide a basis for understanding the environmental implications and treatment challenges associated with sulfate in water systems. Proper analysis and management are essential for effective wastewater treatment and environmental protection.
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