Chapter 1 Introduction

Chapter 1 Introduction to Environmental Engineering

CHE332

Contents

• Environmental Science & Engineering

• Environmental Chemical Processes

• Environmental Chemicals

• Unit of Concentration

• Environmental Policy

Multiple Choice

Abiotic defines as non-living elements (e.g. temperature, light, atmosphere gases, mountain, land, water, ocean).

Which one is biotic?

• Temperature

• Light

• Microorganisms

• Water

Multiple Choice

Which one is best describe about environmental engineering?

• study of the environment, its biotic and abiotic components and their inter relationships

• application of science & engineering principles to protect and enhance the quality of the environment, public health and welfare

• study of chemical processes occurring in the environment which are impacted by humankind's activities

Multiple Select

Environmental Engineering is associated with multidisciplinary of engineering sciences that combines

• biological

• chemical

• physical

Environmental Engineering

• Remediation of contaminated site (fixing the past)

• Treatment of a polluted effluent (dealing with the present)

• Pollution avoidance (planning for the future)

• Care for future generations.

Multiple Select

List 4 steps of carbon cycle

• Photosynthesis

• Decomposition

• Respiration

• Combustion

Open Ended

The carbon cycle is important in ecosystems because it moves carbon, a life-sustaining element, from the atmosphere and oceans into organisms and back again to the atmosphere and oceans.

Describe the process of decomposition and combustion in carbon cycle.

Open Ended

Based on the pictures given, list 5 steps of nitrogen cycle and their conversion

Open Ended

One of human activities that might impact environment is Green house effects. As a environmental engineer, what is the main factor that contribute this scenario and how you will reduce the effects to human living.

Multiple Select

ENVIRONMENTAL CHEMICALS refer to a chemical compound or chemical element present in air, water, food, soil, dust, or other environmental media such as consumer products that can directly affects the environment when utilized.

How does the people exposed to environmental chemicals?

• Ingestion

• Inhalation

• Skin contact

Multiple Select

Hydrogen and oxygen are chemical elements that present in water.

Choose the chemical elements that might present in air

• Nitrogen oxides

• Oxygen

• Ozone

Unit of Concentration

Concentration =  $\frac{Quantity\ of\ subs\tan ce}{Quantity\ of\ particular\ phase}$  

Units for Mass Measurement

• Mass / Mass

• Mass / Volume

• Volume / Volume and Mole / Mole

Multiple Select

Which is the correct expression/unit for air quality

• mg/L

• mg/g

• ppm (parts per million)

• mg/m³

Poll

The objectives of National Policy on the Environment (DASN) are

• A clean environment, safe, healthy and productive environment for present and future generations,

• Conservation of country’s unique and diverse cultural and natural heritage with effective participation by all sectors of society, and

• Sustainable lifestyles and patterns of consumption and production.

Thank you.