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1. The optimum Carbon to Nitrogen ratio for anaerobic digestion material is A. 20:1-25:1 C. 25:1-30:1 B. 16:1-25:1 D. 25:1-35:1

1. The optimum Carbon to Nitrogen ratio for anaerobic digestion material is A. 20:1-25:1 C. 25:1-30:1 B. 16:1-25:1 D. 25:1-35:1

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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1. The optimum Carbon to Nitrogen ratio for anaerobic digestion material is A. 20:1-25:1 B. 16:1-25:1 C. 25:1-30:1 D. 25:1-35:1 2. Which of the following is NOT correct about the composting process? A. The composting process of MSW could be divided into three phases. B. Microbes begin to proliferate, by using sugars, starches, etc. during mesophilic phase. C. Thermophilic phase, a corresponding intensification of microbial activity could be observed. D. Maturation stage of composting is relatively short, such as only one or two days. 3. A live bottom bin has six screw conveyors, each with r₁ = 14 cm, r₂ = 7 cm, N=1, P = 55 cm, and R = 12 rpm. Assuming that C = 0.5, the total material flow is A. 1.1 m³/min C. 0.92 m³/min D. 0.83 m³/min 4. is NOT considered as the undesirable effects of combustion. 5. A. Ash B. Air pollution C. Dioxin D. Steam is the correct priority ranking of the following solid waste treatment strategies: 1 Management; 2 Recycling materials; 3 Recovery from waste; 4 Landfill; 5 Reducing the quantity of waste generated; 6 Reusing the materials. B. 1.2 m³/min A. 132465 B. 156234 234615 D. 243165 C.
Transcribed Image Text:1. The optimum Carbon to Nitrogen ratio for anaerobic digestion material is A. 20:1-25:1 B. 16:1-25:1 C. 25:1-30:1 D. 25:1-35:1 2. Which of the following is NOT correct about the composting process? A. The composting process of MSW could be divided into three phases. B. Microbes begin to proliferate, by using sugars, starches, etc. during mesophilic phase. C. Thermophilic phase, a corresponding intensification of microbial activity could be observed. D. Maturation stage of composting is relatively short, such as only one or two days. 3. A live bottom bin has six screw conveyors, each with r₁ = 14 cm, r₂ = 7 cm, N=1, P = 55 cm, and R = 12 rpm. Assuming that C = 0.5, the total material flow is A. 1.1 m³/min C. 0.92 m³/min D. 0.83 m³/min 4. is NOT considered as the undesirable effects of combustion. 5. A. Ash B. Air pollution C. Dioxin D. Steam is the correct priority ranking of the following solid waste treatment strategies: 1 Management; 2 Recycling materials; 3 Recovery from waste; 4 Landfill; 5 Reducing the quantity of waste generated; 6 Reusing the materials. B. 1.2 m³/min A. 132465 B. 156234 234615 D. 243165 C.
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