What is difference between micro-organisms & micro pollutants?

omenli collins

• Oct 13th, 2016

Micro-organism exists internally and can be destroyed at high temperature. It performs multiple functions, it can cause harmful diseases but can also help to enrich the soil. It is a living thing. M...

Khalid I Jamadar

• Jun 1st, 2016

A microorganism or microbe is an organism which is too small to be seen by the unaided human eye. They are microscopic. The study of microorganisms is called microbiology. Microorganisms include bacteria, fungi, archaea or protists and viruses.

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What is the difference between composite and alloy metals ?

Lovy

• Aug 7th, 2018

Alloys and composites are mixtures of elements. The main difference between alloy and composite is that alloy has at least one metal in its composition whereas composites do not have metal components.

teju

• Aug 1st, 2017

A composite metal is a material made of two or more different metals having different physical or chemical properties that when combined produce a material with characteristics different from individu...

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How can we calculate heating of natural gas?

amit kumar panigrahi

• Sep 5th, 2015

We are using gas chromatogrpahy for calculating the carorific value of a combution gas

Nihar

• Sep 3rd, 2015

By thermocouple, pyrometer, We can measure and calculate the heat of Natural gas..?

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I have a liquid mixture in a bottle containing different synthetic substances dissolved from their salt forms (i.e. lidocaine hydrochloride, anhydrous caffeine). These compounds are dissolved in distilled water.
So the question is: How can I separate the dissolved solids from the aqueous solution? Can I do it by forming a hydrochloride precipitate by adding some hydrochloric acid? Or, say the...

Nilesh

• Jun 29th, 2017

In case of solids the lighter solids can be separated by decanting it in water medium when both of the solids are ... Distillation can also be used to separate dissolved salts from their aqueous solutions.

rockky

• Apr 27th, 2017

By evaporation and distillation process. Through many evaporator series to find the Liqueur or product that you need

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What is the difference between Filtration and Sedimentation?

Mani

• Sep 7th, 2017

Sedimentation is a separation of particles depending upon their density whereas filtration is a separation of particles depending upon particle size.

Ravi

• Jul 5th, 2017

Sedimentation is the separation of solids from liquids by gravitational method where as filtration is the separation of solids from liquids by filter medium

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What is the difference between heat and mass transfer ?

swara

• Aug 9th, 2018

Heat transfer may be defined as the flow of energy or heat from higher temperature region to lower temperature region due to temperature difference.
Mass transfer may be defined as flow of conc. of molecules from solute to solvent due to concentration difference.

kumar shivam

• Apr 25th, 2018

Heat Transfer deals with the movement of heat and temperature gradients while Mass Transfer deals with concentrations of a particular substance. ...

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neeru srangal

 Profile Answers by neeru srangal Questions by neeru srangal

• Aug 17th, 2014

Chemical Potential: Change in Gibbs free energy at const T &P
Fugacity: How much chemical potential of a phase differ from its standard state and its equal to partial pressure in case of ideal gas.

Sumaia afroz mim

• Nov 27th, 2013

1.To calculate free energy.
2.chemical potential is 1 type of force to turn a reaction in equilibrium.
3.chemical potential is comparable to escaping tendency or fugacity,its means the tendency of reaction flow to ewuilibrium point.
4.If chemical potential is high escaping tendency will high.

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erpcochin  

 Profile Answers by erpcochin Questions by erpcochin

• Member Since Apr-2011 | Apr 12th, 2011

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dude...its Flaring, not flairing....
1) While refining crude oil we get non condensable gases like C1 and C2 which are not economical if condensed using extensive pressurising and cooling processes in Refineries. So we divert these gases to Flare.
2) In the process of refining we sometimes get our equipment over pressurised, this over pressure is released through safety valves to the Flare.
3) We also get some toxic gases like H2S in the process of refining, we divert these to Flare.
4) During shutdown and startup of the process plants, to stabilise the plant we also divert some non condensables, over pressure to the Flare.

pradeep

• Oct 3rd, 2011

After the process of distillation of crude we get many undesirable product which are hazardous in nature , if we expose without combustion ,it creates pollution due to this we do combustion of all undesirable product inflar .

tahir hussain

• Sep 24th, 2011

first of all we should have the concept of the gases remove while treating in refinery operations they can be sox , carbon dioxide , carbon mono and other hazardous gases....... now back to key poin...

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You have two layer of material to provide insulation. They have heat transfer co-efficient (k1>k2).How will you obtain better insulation?

E Smardy

• Mar 22nd, 2013

I dont think you can generalise this problem - at least not for flat plane and cylindrical co-ordinates. It really depends on how much bigger k2 is relative to k1 and how big the pipe thickness is relative to the diameter.

Affwan Hassan

 Profile Answers by Affwan Hassan Questions by Affwan Hassan

• Jul 8th, 2011

I do have a question here, If the material of lower insulation be bounded to the first system, doesn't that result in heat loss?

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What is use of Reynolds number in designing of Heat exchange?

Dhruv

• Jul 17th, 2017

Use for determination of Shell side and tube side heat transfer coefficient, pressure drop, selection of tube side and shell side process fluid,

D.S.

• Apr 17th, 2017

The Reynolds number is first used to understand what flow regime (i.e. turbulent, transition zone, laminar). It is then used to calculate the shell-side and tube-side film coefficients which are then used to calculate an overall U.

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Explain What is Organic Chemistry?

Kingsuk Karmakar

• Jul 13th, 2017

It is the branch or part of Chemistry in which we concern with the compound of carbon. Originally confined to compound to produced by living things.

ankit

• Apr 20th, 2017

Organic chemistry is branch of chemistry which deals with carbon compound

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Reena Mhatre

• Nov 17th, 2017

The valence of an elementor compound does depend on the number of hydrogen ions (H+) accepted or hydroxyl ions (OH-) denoted for each atomic weight or molecular weight.

Tarnveer Singh

• Oct 21st, 2017

Valency is the combining capacity of an element. For metals, it is equal to the number of electrons in the outermost shell of their atoms, and for nonmetals it is eight minus the number of electron...

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What is corrosion? Which is the most important material used for metallic coating?

rasika

• Jul 2nd, 2017

Corrosion is the destruction in the metal due to oxidation with atmospheric air
aluminium(Al) is material

Deepak Mishra

• Jun 8th, 2017

The most important material used for coating is Zinc (due to its sacrificial property)

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Nabeel

• Aug 8th, 2014

Efficiency of an evaporator is given as : mass rate of vapors formed / mass rate of feed. Since in single stage evaporator there is greater LMTD as compared to the a multiple effect evaporator (of al...

Debu

• Feb 7th, 2014

Efficiency = amount of water evaporated per unit heat supply ...when we use multiple h.e ,content of water in exchanger is continuously decrease so efficiency decrease :)?

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What is Unit Process and Unit Operations? How they are different from one another?

Vishal

• Nov 28th, 2017

Unit process includes chemical change where as unit operation includes physical change

Kingsuk Karmakar

• Aug 14th, 2017

In process where only chemical changes occurs that is called Unit Process and where no chemical changes occurs only physical changes occurs that is called Unit Operation. Unit Process example like d...

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What is 3rd Law of Thermodynamics?

Bandana

• Aug 4th, 2017

At absolute 0 degree entropy of a substance is zero, as entropy is a measurement of degree of randomness.

Kingsuk Karmakar

• Aug 2nd, 2017

The entropy of a perfectly crystalline substance at zero K or absolute zero is taken to be zero.
This law is only applicable for perfectly crystalline substance. If there is imperfection at 0 K, the will be larger then zero.

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How can a chemical production engineer improve the process with respect to yield & quality?

SUCHARITHA

• Aug 22nd, 2014

A recycle stream is one way to improve purity/quality and yield of product.

VIJAYAKUMARAN

 Profile Answers by VIJAYAKUMARAN Questions by VIJAYAKUMARAN

• Jul 23rd, 2014

chemical process engineer should observe the changes in temperature, pressure, flow and electrical load of the units to understand the changes in the process. Fugitive emission and stack emission are ...

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divakarnaik822

• Sep 10th, 2017

Unit operation is the basic step in any chemical engineering related fields, in this operation only physical changes are occurred but not chemical changes
Ex:-heating, cooling, evaporation, sedimentation

Akash shrama

• Aug 13th, 2017

Each chemical process frequently consists of a fewer number of distinct individual step.

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Kingsuk Karmakar

• Jul 13th, 2017

Water density is 1 and Benzene density is 0.8765 and they are both immiscible liquid or small amount miscible (1.84 g/l). If any mixture solution contain water and benzene, water settle in lower layer (because water have higher density then benzene) and benzene present in upper layer.

Dhaval

• Jan 12th, 2017

First one is that we have two liquids 1. Water & 2. Benzene Benzene is insoluble in water. Thus both liquid solutions are immiscible. We know that We have extraction process during which the 2 liquid...

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vikas

• Jul 9th, 2017

Because distillation depends on volatility of component and toluene is a more volatile than water.

Pritam Jadhav

• May 4th, 2017

Because the boiling point of water is higher than toluene.
Thus toluene is more volatile liquid, therefore it comes out first.

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