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Self-paced Advanced

Environmental Chemistry

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FREE

934 min

Anytime

English

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Engineering AcademyLearn Without Limits: Free Engineering Courses

Pharmaceutical & Healthcare

Chemistry & Chemical Science

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Volume pricing for groups of 5+

Why enroll

This course is highly valuable for civil and environmental engineering students, as well as professionals working in environmental monitoring and pollution control. It helps learners understand the chemical basis of environmental regulations, treatment processes, and pollution mitigation strategies. The knowledge gained is essential for careers in environmental engineering, public health, sustainability, and regulatory compliance.

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Engineering Academy

Engineer

Learn Without Limits: Free Engineering Courses

5+ yrs experience·India

Is this course for you?

You should take this if

You work in Pharmaceutical & Healthcare
You're a Chemistry & Chemical Science / Environmental Engineering professional
You have 3+ years of hands-on experience in this field
You prefer self-paced learning you can revisit

You should skip if

You're new to this field with no prior experience
You need a different specialisation outside Chemistry & Chemical Science
You need live interaction with an instructor

Course details

The Environmental Chemistry course focuses on the chemical processes that occur in natural and engineered environmental systems. It explains how chemical reactions influence air, water, and soil quality and how pollutants interact, transform, and persist in the environment. The course builds a strong foundation for understanding environmental pollution, its impacts, and the chemical principles behind pollution control technologies.

The course covers chemical equilibria, reaction kinetics, and thermodynamics as applied to environmental systems. Emphasis is placed on water and wastewater chemistry, atmospheric chemistry, soil chemistry, and the behavior of contaminants. By the end of the course, learners gain the ability to analyze environmental problems from a chemical perspective and support sustainable environmental management practices.

SOURCE-youtube [NPTEL IIT Roorkee]

Course suitable for

Key topics covered

Fundamentals of environmental chemistry
Chemical equilibrium and reaction kinetics
Acid–base chemistry and buffering systems
Water chemistry and water quality parameters
Chemistry of wastewater treatment processes
Atmospheric chemistry and air pollutants
Soil chemistry and contaminant interactions
Fate and transport of pollutants
Chemical aspects of environmental regulations
Analytical techniques for environmental monitoring

Course content

The course is readily available, allowing learners to start and complete it at their own pace.

29 lectures15 hr 34 min

Introduction
33 min
Equilibrium – Process Feasibility, Gibbs Energy (Standard Condition)
43 min
Gibbs Free Energy – Non-Standard Conditions (Part I)
28 min
Gibbs Free Energy – Non-Standard Conditions (Part II)
32 min
Phase Equilibrium
32 min
Component Balance
28 min
Reaction Kinetics
28 min
Rate of Reaction – I
29 min
Rate of Reaction – II, Types of Reactors
30 min
Mass Balance on Different Types of Reactors
29 min
Material Balance for Complex Reactions
32 min
Material Balance for Reversible Reactions
27 min
Determination of Kinetic Equations
66 min
Acid-Base Reactions
27 min
Acid Dissociation Constant, Strength of Acid
33 min
Ionization Fractions
32 min
Introduction to VMINTEQ
34 min
Estimation of pH using VMINTEQ
24 min
Mixing Problems
34 min
Inverse Dose Problems
31 min
log C-pH Diagram
32 min
Carbonate System: Closed System
35 min
Carbonate System: Open System
34 min
VMINTEQ: Application of Gases, Acid-Base Titration
31 min
VMINTEQ: Titration & Multisweep, Buffer: Introduction
29 min
VMINTEQ: Buffer System, Buffer Intensity: Introduction
28 min
Buffer Intensity: Monoprotic & Diprotic Acids
33 min
Alkalinity: Introduction
29 min
Alkalinity: Theoretical & Practical Definition
31 min

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Questions and Answers

Q: You're sanity-checking an air permit calc and google "estimate stack NOx concentration from gas turbine exhaust ppm to mg per Nm3". A simple-cycle turbine exhaust is 25 ppmv NOx (as NO2 equivalent) at 3% O2, dry. Order-of-magnitude, what concentration do you expect in mg/Nm3?

A: A: 25 ppmv × MW(NO2 46) / 22.4 gives ~50 mg/Nm3. That's the right scale. B: Off by a factor of ten. O2 correction doesn't blow it up that far. C: ppmv is molar, not mass. That shortcut drops MW. D: Moisture correction pushes the other way and still doesn't get you to grams.

Q: You're reviewing a P&ID and search "wastewater neutralization tank pH probe location drawing inconsistency". The drawing shows a single pH probe upstream of the caustic injection quill, but the instrument list tags it as "final effluent pH". What’s the real issue?

A: A: The drawing and intent don’t match. You’re blind to final pH. B: Tag format is cosmetic here. It doesn’t change control or compliance. C: Mixing affects response time, not the fundamental placement error. D: Quill location is a design choice, not the documented discrepancy.

Q: Operations logs show rising ammonia in effluent. You search "biological nitrification upset cold weather low DO symptoms". Influent load is steady, temperature dropped from 22°C to 14°C, and DO is trending at 1.0 mg/L. What’s the most likely root cause?

A: A: Nitrifiers slow hard with cold and low DO. That matches all signals. B: Toxicity would show sudden collapse, not a temperature-linked trend. C: Washout spikes TSS and effluent turbidity first. D: Analyzer drift doesn’t explain the process correlations.

Q: For a scrubber handling moist SO2 at 60°C, you google "material selection for wet SO2 scrubber corrosion". Chloride is negligible, pH is 2–3. Which material choice holds up best?

A: A: Rubber lining isolates the steel from acidic condensate. Proven service. B: 304L fails fast in reducing acids like sulfurous acid. C: Allowance disappears quickly at pH 2. D: Aluminum dissolves under acidic conditions despite the oxide.