Tuesday, December 28, 2021
PORT HARCOURT SOOT: DON’T FEAR THAT BLACK STUFF THERE. BE AFRAID OF THE ONES YOU CANNOT SEE
Friday, December 17, 2021
FOOD SAFETY: WHY YOU SHOULD DRINK SUGAR DRINKS AND NOT "NO SUGARS"
Tuesday, December 7, 2021
LET ME COACH YOU ON HIGH SCHOOL CHEMISTRY
Thursday, December 2, 2021
HOW IT WORKS: KEROSENE STOVE
Tuesday, November 30, 2021
SUCCESSFUL: BIOMASS WASTE TO ALCOHOL
Tuesday, November 9, 2021
MY HIGH SCHOOL CHEMISTRY KIDS MADE THIS SALT
The attached picture made my day.
A group of SS2 students in one of the schools I visit to teach Chemistry came
excitedly, "Sir, we have produced our own salt. We would not buy salt
again in the market."
I taught them in SS1 SEPARATION TECHNIQUES that you can obtain
salt (NaCl) by evaporating sea water to dryness.
The students now secretly arranged for one of them to visit
Ibeno water and get sample of the seawater which they evaporated to dryness and
here comes our locally made salt.
Qualitative Analysis: The salt produced on exposure to air was found to be
deliquescent - attracts water from the atmosphere to dissolve itself. It
dissolves completely in water. The solution of the salt gave white precipitate
when tested with solution of silver nitrate, the precipitate was insoluble in
nitric acid (confirmatory test for chlorides)
This indeed is very rewarding as it has been my expectation to help this young
minds to begin now to figure out ways of harnessing our natural resources.
While I will continue with the work of purifying the product at my private
technical center, I have advised them that the salt need to be purified to
remove carbonates and other non-sodium halides etc.
We would in the present state use the salt as preservative for our emulsion
paint, we would use it for laboratory test for chlorides and to demonstrate
removal of hardness of water (water softening by ion exchange).
My philosophy of high school chemistry is to let them understand the theory,
carry out the laboratory practicals, and apply the knowledge to do mini
projects.
Sunday, October 17, 2021
CURRENT JOBS: APPLY IMMEDIATELY
2. NAMPAK NIGERIA LIMITED - Chemical and Electrical Engineers (Degree/HND)
Nampak Nigeria Limited - We are a frontline multinational manufacturing company with clientele cutting across the major sector of the economy.
Applications are invited for:
Title: 2022 Graduate Trainee Program
Location: Nigeria
Requirements
BSc - 2nd Class Upper or HND - distinction
Chemical or Electrical Engineering
0 year work experience
Not older than 25 years of age by January 2022
Application Closing Date
15th October, 2021.
How to Apply
Interested and qualified candidates should send their CV to: bevcan.hr@nampak.com using the Job Title as the subject of the mail.
3. GRACECO LIMITED
Technical Operator (Functional Trainee)
Company: Graceco Limited
Location: Lagos
Job Summary
We are searching for a smart and well-focused Engineering graduate to join our team as a Functional trainee who will be in charge of specific machine on the production.
The person will operate the machine and ensure it is working optimally.
To be successful as a trainee engineer, you should always be expanding your engineering knowledge and sharpening your communication skills.
Requirements
Graduate of Electrical Engineering, 2.1 or better
0 - 2 years work experience.
Post degree training from Institute like IIT would be added advantage
Applicants under age of 30 are preferred.
Applicant who resides within Ikeja, Agege, Ipaja, Otta, Alagbado and environs will have added advantage.
Applicant must be knowledgeable about basic TPM knowledge, autonomous maintenance step 1,2,3 is preferable.
Basic computer skills (windows, excel) is preferable to enter performance results in the related database.
HACCP & Hygiene oriented.
Apply here:
https://lnkd.in/esPrvXKe
Wednesday, October 13, 2021
SS3 CHEMISTRY LESSON NOTE: PETROLEUM REFINING
1.0 Introduction
Fractional
distillation is the process by which oil refineries
separate crude oil into different, more useful hydrocarbon products
based on their relative molecular weights in a distillation tower. This is the
first step in the processing of crude oil, and it is considered to be the main
separation process as it performs the initial rough separation of the
different fuels. The different components that are separated out
during this process are known as fractions.
Fractions that are separated out include gasoline, diesel, kerosene,
and bitumen. Fractional distillation allows a lot of useful products
to be made from crude oil, with many environmental consequences for the use of
those useful products
1.1 Process
The process of fractional
distillation is fairly simple, but is powerful in the way that it separates all
the different, complex components of crude oil. First, the crude oil is heated
to vapourize it and is fed into the bottom of a distillation tower. The
resulting vapour then rises through the vertical column. As the gases rise
through the tower, the temperature decreases. As the temperature decreases,
certain hydrocarbons begin to condense and run off at different levels. Each
fraction that condenses off at a certain level contains hydrocarbon molecules
with a similar number of carbon atoms. These boiling point 'cuts' allow
several hydrocarbons to be separated out in a single process. It is this
cooling with the height of the tower that allows for the separation.
After this rough
refinement, individual fuels may undergo more refinement to remove any
contaminants or undesirable substances, or to improve the quality of the fuel
through cracking.
1.1.1 Fractions of petroleum
There are several ways of
classifying the useful fractions that are distilled from crude oil. One general
way is by dividing into three categories: light, middle, and heavy fractions.
Heavier components condense at higher temperatures and are removed at
the bottom of the column. The lighter fractions are able to rise higher in the
column before they are cooled to their condensing temperature, allowing them to
be removed at slightly higher levels. In addition to this, the fractions
have the following properties:
- Light distillate is
one of the more important fractions, and its products have boiling
points around 70-200°C. Useful hydrocarbons in this range include
gasoline, naphta (a chemical feedstock), kerosene, jet fuel, and paraffin.
These products are highly volatile, have small molecules, have
low boiling points, flow easily, and ignite easily.
- Medium distillate are
products that have boiling points of 200-350°C. Products in this
range include diesel fuel and gas oil - used in the
manufacturing of town gas and for commercial heating.
- Heavy distillates are the products with the lowest volatility and have boiling points above 350°C. These fractions can be solid or semi-solid and may need to be heated in order to flow. Fuel oil is produced in this fraction. These products have large molecules, a low volatility, flow poorly, and do not ignite easily.
However, there are two
major components that are not accounted for in these three categories. At the
very top of the tower are the gases that are too volatile to condense,such as
propane and butane. At the bottom are the "residuals" that contain
heavy tars too dense to rise up the tower, including bitumen and other waxes.
To further distill these they undergo steam or vacuum distillation as they are
very useful.
1.2 Locations of petroleum refinery in Nigeria
The downstream industry in
Nigeria is well established. NNPC has four refineries, two in Port
Harcourt (PHRC), and one
each in Kaduna (KRPC) and
Warri (WRPC). The
refineries have a combined installed capacity of 445,000 bpd. A comprehensive
network of pipelines and depots strategically located throughout Nigeria links
these refineries.
Cracking
of hydrocarbons
The process of breaking
higher hydrocarbons with high boiling points into a variety of lower
hydrocarbons that are more volatile (low boiling), is called cracking (or
pyrolysis). For example, a higher hydrocarbon C10H22 splits
according to the reaction.
The process of cracking,
increases the relative amounts of the lower hydrocarbons. During cracking,
carbon-carbon bonds get broken in a random manner, leading to various kinds of
products being formed.
Types of cracking
Breaking down large
molecules by heating at high temperature and pressure is termed as thermal
cracking. Thermal cracking is further classified into the following classes.
- Liquid phase thermal cracking process:
The higher boiling fractions e.g., fuel oil, lubricating oil are converted
into low boiling fractions by heating the liquids at a temperature of 750
K, under a pressure of about 10 atmosphere.
- Vapor phase thermal cracking process:
Low boiling fraction e.g., kerosene is cracked in the vapor phase at a
temperature of about 875 K and under a pressure of 3 atmosphere.
Higher hydrocarbons can
also be cracked at lower temperature (600 - 650 K) and lower pressure (2 atm)
in the presence of a suitable catalyst. Catalytic cracking produces gasoline of
higher octane number and therefore this method is used for obtaining better
quality gasoline. A typical catalyst used for this purpose is a mixture of
silica (SiO2), 4 parts; alumina (Al2O3), 1
part, and manganese-dioxide (MnO2), 1 part.
Here, higher hydrocarbons
are mixed with steam in their vapor phase and heated for a short duration to
about 900°C, and cooled rapidly. This process is suitable for obtaining lower
unsaturated hydrocarbons.
1.3 Reforming
Reforming,
in chemistry, processing technique by which the molecular structure of a
hydrocarbon is rearranged to alter its properties. The process is frequently
applied to low-quality gasoline stocks to improve their combustion characteristics. Thermal
reforming alters the properties of low-grade naphthas by converting the
molecules into those of higher octane number by exposing the
materials to high temperatures and pressures. Catalytic reforming uses
a catalyst, usually platinum, to produce a similar result. Mixed with
hydrogen, naphtha is heated and passed over pellets of catalyst in a series of
reactors, under high pressure, producing high-octane gasoline.
Reforming or aromatisation involves the conversion of open chain (aliphatic) hydrocarbons and/or cycloalkanes in the presence of a catalyst, into aromatic hydrocarbons (arenes) containing the same number of carbon atoms. Aromatisation involves reactions of the type, dehydrogenation, cyclisation, and isomerisation.
In reforming (or aromatisation), cyclic and acyclic alkanes containing six to eight carbon atoms are heated at about 670 K in the presence of palladium, platinum or nickel as catalyst. Platinum seems to be the best catalyst and so the process is sometimes called platforming.
Thursday, September 23, 2021
NLNG IS EMPLOYING HND ENGINEERING GRADUATES
JOB VACANCY
We seek to engage suitably qualified candidates for employment into the following positions:
1. TRAINEE OPERATOR (PO/2021/001)
The Job Objective: To carry out daily field operational activities in the assigned plant area in a safe and efficient manner; contributing to steady and sustained production in line with daily production targets.
2. TRAINEE TECHNICIAN (PM/2021/001)
The Job Objective: To execute Field or Workshop Maintenance tasks, to meet work Programs, safety requirements, and quality standards in order to ensure plant integrity, reliability and availability in a safe, efficient, and cost-effective manner.
Both positions are located in Bonny Island, Rivers State.
The Person:
1. To be eligible to apply for the TRAINEE OPERATOR position, candidate should:
- Possess a Higher National Diploma (HND) in Chemical, Process, Instrumentation, Mechanical or Electronics /Electrical Engineering, obtained at a minimum of Upper Credit Level
2. To be eligible to apply for the TRAINEE TECHNICIAN position, candidate should:
- Possess a Higher National Diploma (HND) in Mechanical, Electrical, Electronics), Metallurgy, Instrumentation Engineering obtained at a minimum of Upper Credit Level
For both positions, in addition to the requirements above, candidates should:
- Be able to demonstrate proficiency in information technology
- Have completed NYSC not earlier than year 2018
- For best user experience, do not use Mobile Phones. Only make use of laptops and desktops
- Ensure you have any of the following Supported Internet browsers
- Microsoft Internet Explorer - 11.0 & later
- Mozilla Firefox - 63.0 & later
- Apple Safari – 6.2 & later
- Google Chrome – 68.0 & later
Attachment of the underlisted documents is mandatory:
- Government issued Birth Certificate
- Copies of Tertiary education certificates
- Copies of Secondary education certificates
- Copies of Primary education certificates
- NYSC completion certificate
- NLNG DOES NOT DEMAND PAYMENT FROM APPLICANTS as the application is entirely FREE OF CHARGE
- NLNG DOES NOT ASSIGN AGENTS to assist applicants in processing applications
- Applications open 21st September 2021 and closes 12th October 2021
- Only successful candidates at each stage of the exercise will be contacted
- Only applications completed via the NLNG JOB PORTAL are valid
- Any false information provided during or after the application process will lead to the outright disqualification of such candidate(s)
Sunday, September 19, 2021
EXXONMOBIL WANTS TO EMPLOY A LITIGATION ATTORNEY
Job Role Summary
Mobil Producing Nigeria Unlimited (“MPN”), an ExxonMobil affiliate incorporated in Nigeria, is one of the largest crude oil and natural gas producers in Nigeria. MPN is looking for an attorney with strong litigation experience to manage a varied docket of commercial, environmental, land and tort matters. The attorney will handle a variety of matters and will work independently with supervision that is appropriate for the attorney’s level of experience.
Job Role Responsibilities
Actively manage a wide docket of commercial, environmental, land and tort matters, including responsibility for case strategy, legal analysis, witness preparation, depositions, judicial proceedings (hearings, trials, appeals, etc.).
Provide legal counsel and support as needed on various risk management issues.
Coordinate and interface with outside counsel to ensure proper handling of matters where outside counsel is retained.
Handle a significant case load (volume and complexity).
Review documents and pleadings as relevant and necessary associated with the above matters.
Communicate with and advise business clients and law management regarding case status and key milestones.
Work and coordinate with, and provide and seek advice from, other lawyers.
Expected Level of Proficiency
Bachelor of Laws (LL.B) and – minimum of Second Class Honours (Upper Division).
Barrister at Law (B.L) from the Nigerian Law School and licensed to practice in Nigeria.
Strong academic record, a Master’s Degree in Law will be an added advantage.
Strong research and analytical skills.
Highest ethical standards and integrity.
Strong interpersonal and communication (oral and written) skills.
Ability to exercise sound business judgment and work both independently and as part of an integrated legal team.
At least Ten (10) years of post-call legal experience, all (or substantially all) of which is in litigation.
Preference for energy industry experience.
Experience in handling and managing significant and complex litigation matters.
Knowledge of Civil Procedure and Rules of Evidence.
Ability to travel domestically, as needed.
Alternate Location:
Conditions of Employment
Successful candidates will be made a conditional offer of employment. The conditions include, but are not limited to: a satisfactory criminal records disclosure; satisfactory employment references over five years (where applicable); verification of qualifications, including any professional accreditation stated in the application; completion of a pre-employment medical, including a test for illicit or unprescribed drugs in accordance with the Company's safety policies; and the legal right to work on the agreed commencement date.
Equal Employment Opportunity Policy
ExxonMobil and Mobil Producing Nigeria Unlimited (“MPN”), an ExxonMobil affiliate incorporated in Nigeria, are equal opportunity employers and all qualified applicants will receive consideration for employment. All applicants are offered equal opportunity to demonstrate their abilities during our recruitment processes, therefore, please contact the Recruitment Team if you wish to discuss any particular requirements to enable you to complete our recruitment process.
https://jobs.exxonmobil.com/ExxonMobil/job/Lagos-Litigation-Attorney-LA/789733900/?from=email&refid=8798441900&utm_source=J2WEmail&source=2&eid=99500-202122190122-16855596900&locale=en_US
Friday, September 10, 2021
WATER SAFETY: HOW LONG SHOULD SACHET WATER BE STORED FOR DRINKING
You can store your sachet
and bottled water up to 4 weeks from the date of production. A 4 – 12 weeks
shelf life for packaged drinking water is recommended.
Water is life and every
living thing depends on it for existence. Sachet water has gradually become the
most widely consumed liquid in Nigeria with varying qualities.
Olaniyan and others of the Department
of Civil Engineering, Ladoke Akintola University of Technology, Ogbomoso, Oyo
State Nigeria studied Ten (10) brands of sachet water from Ogbomoso South and
North Local government area and recommended 12 weeks shelf life of water from
the date of production.
Akpen and others of the Department
of Civil Engineering, University Of Agriculture, Makurdi, Benue State analyzed eight
brands of sachet water and four brands of bottled water samples were collected
from different manufacturers at Gboko town, Benue State. They recommended 12
weeks shelf life.
Akinde and others of the Department
of Biological Sciences, College of Science, Engineering and Technology, Osun
State University evaluated the effect of storage on the physico-chemical status
and bacteriological quality of sachet water produced in Port Harcourt. 10
brands of sachet water was studied and recommended that expiry date of sachet
water produced in Nigeria should not exceed four weeks from the date of
production
Highlight
of scholarly work
Olaniyan et.al, 2016
investigated the temporal variation in water quality of Sachet water produced
in Ogbomoso, Oyo State. Ten (10) brands of sachet water from Ogbomoso South and
North Local government area were collected within 24 hours of production and
stored at standard room temperature and conditions. Sub-samples were drawn from
the stock samples on daily basis for physico-chemical measurements on the water
samples Temperature, pH, colour, turbidity, Hardness, Total Alkalinity,
Dissolve Oxygen (DO), Biological Oxygen Demand (BOD), Electrical Conductivity
(EC) and Nitrate - C, (7.96 - 8.80) and (20-70) Hazen, respectively. The Total
hardness EC and DO and BOD values varied from (45- 105)mg/l, (11 - 184)µs,
(2.83 - 12.24)mg/L and (18.2 - 28.4)mg/l, respectively. Shelf life for the
selected sachet water in Ogbomoso is 12 weeks from the date of production under
laboratory condition with partial exposure to sunlight.
Akpen et.al, 2018 evaluated
the quality of selected sachet and bottled water produced and sold within Gboko
town, Benue State was investigated to determine their Shelf life. Eight brands
of sachet water and four brands of bottled water samples were collected from
different manufacturers within 24 hours and stored at ambient temperature.
Sub-samples were drawn from the stock samples at intervals of three weeks up to
a period of 15 weeks and subjected to physical, chemical and microbial
examination. Results for physical and chemical analysis revealed that all the
samples examined were wholesome by the 12th week of study except, samples K4and
B4 (Wishden sachet and bottled water) which had iron contents of 0.50 mg/L and
0.53 mg/L respectively which were above WHO Standard value of 0.30 mg/L. Total
and Escherichia coliforms appeared in all sachet water samples and three
bottled water samples analyzed within the first 6 weeks but were no longer
detected in any of the samples from the 12th week to the end of the
investigation period. The highest total coliform of 21 MPN/100mL and
Escherichia coli of17 cfu/100mL were recorded on the first day of production of
sachet water. It was concluded that some sachet water products consumed in
Gboko were not safe for drinking within the first 12 weeks of production. It
was recommended that sachet and bottled water produced and consumed in Gboko
can be used from the 3 and 12 weeks after production respectively up to 15
weeks. However, there is need to investigate the shelf life beyond 15 weeks to
determine the actual shelf life which may be more than 15 weeks.
Akinde et.al, 2011 highlighted
the effect of storage on the physico-chemical status and bacteriological
quality of sachet water produced in Port Harcourt, Nigeria for a period of four
months. Ten brands of sachet water were collected within 24 hours of production
and stored at ambient temperature. Sub-samples were drawn from the stock
samples on monthly basis for physico-chemical measurement and on weekly basis
for enumeration of total aerobic heterotrophic bacteria and indicator organisms
using ASTM, APHA and WHO analytical methods. pH values increased in all brands
to acceptable WHO limits within 8 weeks of storage and gradually decreased
toward the end of the experiment. Dissolved oxygen, volatile organic matter and
nitrate values decreased throughout the investigation period while phosphate
and potassium values increased throughout the investigation period in all
brands tested. Total aerobic heterotrophic bacterial count increased gradually
in all brands to unacceptable limit within four weeks of storage and gradually
diminished to zero level by the end of experiment. Total and faecal coliform
appeared in 40% of sachet water samples analyzed within the first three weeks
and were no longer detected throughout the investigation period. Escherichia
coli was isolated in one brand at the onset while faecal Streptococci were
absent throughout the investigation period. Results of the experiment indicate
that 60% of the brands analyzed met the WHO guideline limit for drinking when
stored at ambient temperature within four week period. However, storage beyond
this period led to diminished aesthetic quality of sachet water and increased
proliferation of bacteria to a level deleterious to human health.
References
1. Olaniyan, S. O., A. S. Adeyemi and W.O. Adeleke (2016): Determination
of Shelf Life of Selected Sachet Water in Ogbomoso, Oyo State Nigeria. FUOYE Journal of Engineering and Technology,
Volume 1, Issue 1. ISSN: 2579-0625 (Online), 2579-0617 (Paper)
2.
Akpen,
G. D., I. S. Kpoghol and L. A. Oparaku (2018): Quality
Assessment Of Sachet and Bottled Water Soldin Gboko, Benue State, Nigeria. Nigerian Journal of Technology (NIJOTECH)
Vol. 37, No. 1, pp. 241 – 248
3.
Akinde,
S. B., M. I. Nwachukwu and A. S. Ogamba (2011): Storage
Effects on the Quality of Sachet Water Produced within Port Harcourt
Metropolis, Nigeria. Jordan Journal of Biological Sciences. Volume 4, Number 3,
ISSN 1995-6673 Pages 157 - 164
Monday, August 30, 2021
Saturday, August 21, 2021
WHY I DO NOT SEEM TO BE EXCITED ABOUT THE NEW PETROLEUM INDUSTRY LAW
Recall that the President signed the Petroleum Industry
Bill into law on the August 16, 2021.
I schooled at the Petroleum
Training Institute. You know what that mean? We were trained on the
engineering, economics, and politics of the petroleum industry. I had the
opportunity to interact with the owners and the controllers of the petroleum
resources in the different states of the federation. We daily talked about the hopes
and the despairs of being from an oil community. The Ogoni struggle, Ken Saro
Wiwa, gas flaring, were our everyday gist back then. So I got so interested in
the oil enterprise at a very young age.
Also, as at the time the
Petroleum Industry Bill was drafted I owned my personal hard copy which I read
line by line, page by page. I was by then an intern at the Department of
Petroleum Resources (DPR) and part of my experience was to understand all
existing laws in the Nigerian petroleum industry as well as international
charter and conventions. I owned a hard copy of the Petroleum Act 1969 which I
studied between lines. The petroleum industry bill, to us that saw the original
version, was to be the best thing to happen to the Nigerian oil sector, the
host community and the nation at large. It was to be a legal framework that
harmonizes all extant laws hitherto operating the sector into one document.
Hopes were high. We wished the bill was passed into law the next second.
I seriously wonder if it
that bill that is now passed into law and it look like nothing happened.
Maybe Nigerians, like
myself, from Niger-Delta have experienced things that were highly anticipated
but turned out to be a mere ritual.
To me this law might be
like one of those things that just happen for happening sake without any or
much impact on the masses. I would point a few examples:
1.
Where is the impact of the 13percent oil
derivation on the oil producing states: I remembered how as PTI students then
we wished the struggle for 13% came speedily. Kudos to Victor Attah, James
Ibori, and Peter Odili, that fought for the actualization of that. But where is
the impact on the masses? My state still rank up in unemployment.
2.
Where is the impact of Niger Delta Ministry:
The only thing all of us know is the Minister of Niger Delta who by now must
have greatly increase his net worth but we don’t seem to be aware of any
ministry as such. We thought, if we could just have a separate ministry to oversee
the affairs of the oil rich region then that would mean heaven on earth.
3.
Where is the impact of stopping gas flaring:
It might interest you to know that the cooking gas (LPG) that is now sold at an
exorbitant price is waste gas of the oil sector. We dreamt that if it could
only be harnessed we would cook free 24 hours with LPG and enjoy electricity
free from Natural gas plant. Gas flaring has ceased, the waste gas is now
converted to LPG, LNG, and CNG, but can we afford it as Nigerians. Can we
access it?
These and many more do make
me skeptical about this new law and I ask, why can’t Nigerians benefit from
Nigeria?
By Idongesit F. Oduok
Visit: www.odfidtechnicalworld.blogspot.com
for interesting updates