3. Express 10 mg/L of as CaCO₃. (Mg=24, Ca=40, C=12, O=16) (20 points)

4. A stack emission has the following characteristics: 90 % SO2, 10 % N2 and no particulates. What treatment device would you suggest and why? (20 points)

5. A one liter cylinder is used to measure the settleability of 0.5 % suspended solids sludge. After 30 min the settle sludge occupy 600 ml. Calculate the Sludge Volume Index (SVI)?? (20 points)

1.One hundred moles per minute of a binary mixture of 50% A and 50% B are separated in a two-stage (serial) process. In the first stage, the liquid and vapor flow rates exiting from the stage are each 50 mol/min. The liquid stream is then passed into a second separator that operates at the same temperature as the first stage. The temperature is the same for each stage, and at that temperature, the vapor pressure of A is 10 kPa and the vapor pressure of B is 100 kPa. Treat the liquids and vapors as ideal. Calculate the compositions of the vapor and liquid streams, and the pressure in the first stage. (30%)

(1) Derive an expression relating, to measurable properties. (10%)

(2) Find for the gas in this process. (10%) ＜Hint＞ Expansion rule:

3. Consider a second-order reaction 2A→B+C, which is occurred in 20 meters of schedule 40 pipe packed with catalyst. There is 104.4 Ibm/h of gas flowing through the bed with the entering pressure of 101300 Pa. Temperature was kept at 260℃. Entering volumetric flow rate (vo) is 6.5 m3 /h. Cross-sectional area of pipe is 0.0013 m2. Catalyst pellet size is 6 mm； catalyst bulk density is 1800 kg/m3. Pressure drop parameter (β0) is 2580 Pa/m. Assume specific reaction rate constant (k) is independent of particle size； k = 0.012 m6/mol kg cat. h. Calculate the conversion with and without pressure drop. (20%) If the catalyst size increases by a factor of 2, what is the conversion with pressure drop? (10%)

(1) Derive a rate law assuming surface reaction is rate-limiting. (10%)

(2) Derive a rate law assuming adsorption of X is rate-limiting. Let Y adsorb on catalyst surface and react with Xㆍ S. (10%) ＜Hint＞ Modified ( B ) and add one extra adsorption reaction.

(一)證明正斷層受到重力滑動的功 。

(二)對正斷層滑動的功 W 進行一次微分，以決定斷層滑動的最佳傾角。

110年 - 110 國立高雄科技大學_碩士班招生考試_環境與安全衛生工程系：環境工程(甲組)#110419

110年 - 110 國立臺北科技大學_碩士班招生考試_環境工程與管理研究所(甲組)：環境工程#102207

110年 - 110 國立宜蘭大學_碩士班招生考試_環境工程學系：環境工程概論#102118

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