Objective
Chemicals have the chemical property of acidity or alkalinity that is important for safe contact, chemical reaction and physical mixture.
Determination of the acidity-alkalinity by acid-alkali reaction is crucial in the understanding of chemical functions.
The principle of pH meter
Advantage and disadvantage of pH meter
Advantage
Wide measurable range
Need short time to mea
the case of corn, this entails separating the leaves,
stalk, and cob so that only the grains remain.
The corn grains will be processed into glucose, which will ferment with the help of yeast and amylase, a specified enzyme for digesting carbohydrates (sugars) . Ethanol is the result of the fermentaton.
Distillation is required to bring the ethanol up to
a 95% concentration.
Optimum dose
at the right time
in the right location
The polymer which undergo
“property transformation”
swelling
reversible volume phase-transition
sol-gel phase-transition
in response to the
external physicochemical stimuli,
also called phase-transition polymer.
외부자극에 의해 민감하게 반응해
특성(Property)이 변화하는 고분자,
“상전이
Sewage that has been aerated
and agitated in order to promote the growth of beneficial microorganisms that break down organic matter.
The activated-sludge process is a
biological method of wastewater treat-ment that is performed by a variable and mixed community of microorganis-ms in an aerobic aquatic environment.
Purpose: to remove settleable organics and floating scum (gr
unstable compared to general fuel cell.
The need for MBFC
Waste processing caused sludge reduction.
Energy saving by generation of electron power
Technology leadership of first stem form development
Non-combustibility.
( Diesel – 63℃ Biodiesel – 150℃ )
Net COx output is very low.
Biodegradability is very High.
( Degradable 90% in 3 weeks. )
(1)Place 0.75(∓0.001g) unknown sample in 250ml beaker
and add 100ml distilled water.
(2) Do Experiment in the same way with Experiment A.
(3) Calculate mass and percentage of Na2C2O4 in unknown oxalate. And Calculate ratio in the same way with Exp A.
Response to Stimulus
- A basic process of living systems
Kinds of External Stimuli
- Temperature, pH, Light, Electric Field,
Chemicals and Ionic Strength
Biomimicry or Biomimietics
- The examination of nature, its models, systems, processes, and elements to emulate or take inspiration from in order to solve human problems
Stimuli-responsive polymers
- Respond with dramatic propert