Extracting fine solid suspensions from liquid streams is designated as_____________________?
Show answer Hide answer
Answer: C. Sedimentation
Explanation
Sedimentation allows fine solid suspensions to settle out of liquids under gravity. Suspended particles denser than the liquid migrate downward to form a concentrated sediment layer. This primary gravity separation process clarifies the liquid phase without requiring physical barrier filters. Solid-liquid separation techniques are essential unit operations in chemical and environmental engineering. Gravity settling velocity governs how quickly fine suspensions separate in static or continuous tanks. Dilute suspensions settle via free settling, while concentrated slurries undergo hindered settling.
Water treatment plants use sedimentation basins to remove fine suspended silt from natural water sources. Wastewater treatment facilities rely on sedimentation to clarify effluent streams before disinfection. Chemical processing plants clarify liquid products by letting fine catalyst fines settle out over time. Decantation involves pouring off a clear liquid supernatant after natural sedimentation has finished. Flocculation is the chemical agglomeration process promoting particle grouping prior to settling. Classification specifically sorts particles into size fractions rather than just extracting fine suspensions.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
Related questions
Q1. What is the nutrient composition implied by a -10-5 fertilizer rating______________?
Show answer Hide answer
Answer: A. 5, 10, 5% respectively of N2, P2O5 and K2O
Fertilizer grades conventionally indicate the percentage composition of nitrogen, phosphate, and potash respectively. A standard numeric rating provides guaranteed analysis percentages for these three primary plant nutri...
Q2. How does the required number of stages respond when the reflux ratio in a continuous counter-current extraction setup is elevated_______________________?
Show answer Hide answer
Answer: B. Decrease
Increasing the reflux ratio returns more solvent back into the extraction column. This higher internal liquid traffic enriches the counter-current streams and improves separation efficiency. Consequently, fewer equilibri...
Q3. What is the reaction order depicted in the accompanying graphic, characterized by the rate expression -rA = KCA_________________?
Show answer Hide answer
Answer: D. 3
The rate expression convention and matching graphic coefficients determine reaction kinetics order. Complex chemical kinetics models evaluate the overall exponent sum in rate laws. Based on the provided rate expression p...
Q4. As ambient temperature climbs, the atomic heat capacities corresponding to all solid elemental substances_________________?
Show answer Hide answer
Answer: A. Increases
According to the Dulong-Petit law and general thermodynamic behavior, atomic heat capacities increase at high temperatures. Thermal agitation allows lattice atoms to vibrate with greater amplitudes, absorbing more therma...
Q5. How does the internal energy of a substance respond to an increase in temperature___________________?
Show answer Hide answer
Answer: A. Increases
Internal energy represents the total microscopic kinetic and potential energy stored within a given substance. Raising the temperature increases the average translational and rotational kinetic energy of its constituent...
Q6. What is the amount of work performed during the free expansion of a gas____________________?
Show answer Hide answer
Answer: B. Zero
Free expansion involves a gas rushing into an evacuated chamber against zero opposing external pressure. Mechanical work done is defined as the product of external pressure and the resulting volume change. Since external...