Semester.ly

Johns Hopkins University | EN.570.445

Physical and Chemical Processes

3.0

credits

Average Course Rating

(3.96)

The application of basic physical and chemical concepts to the analysis of environmental engineering problems. Principles of chemical equilibrium and reaction, reaction engineering, interphase mass transfer, and adsorption are presented in the context of process design for unit operations in common use for water and wastewater treatment. Topics addressed include mass balances, hydraulic characteristics of reactors, reaction kinetics and reactor design, gas transfer processes (including both fundamentals of mass transfer and design analysis), and adsorption processes (including both fundamentals of adsorption and design analysis).

Fall 2012

(3.83)

Fall 2013

(4.05)

Fall 2014

(4.0)

Fall 2012

Professor: Wil iam Bal

(3.83)

Students noted that the best aspects of this course were the practical material and the professor, who was enthusiastic, knowledgeable, and nice. However, students disliked the professor’s disorganization. He often rushed through lectures and there were many mistakes in lecture notes, which took up a lot of time to go over. Suggestions for improvement included better organization and more focus on the important concepts rather than derivations. Students recommended reading the textbook because the lectures were not very effective in teaching the material.

Fall 2013

Professor: Wil iam Bal

(4.05)

Students found that the textbook was an excellent resource in this class, as many of the homework assignments came from the book, and the lectures had materials pul ed from the book. Although the professor was very knowledgeable, students found that the lectures were often muddled and unorganized, and that the professor often digressed from the core concepts. For improvement, students suggested the professor creating and sticking to an outline which the students could then use as a study sheet later in the course. Prospective students should know to read the textbook before lecture, and to anticipate a fairly intense workload. Knowing a bit about hydrology and basic math and physics will help students tackle the chal enging concepts discussed in class.

Fall 2014

Professor: Wil iam Bal

(4.0)

Students praised this course for having a knowledgeable and understanding instructor. Students found the course and the instructor to be somewhat disorganized with students noticing that the course quickly abandoned the syl abus. Suggestions for improvement included a belief that the course could be better organized with multiple students believing that time could be better managed during class. Prospective students should know that students found that a background in fluid mechanics and hydrology was important for success in this course. They should also know that students found it important to complete the assigned readings before lectures.