1st lesson belanja
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1st lesson belanja
- Maths
- Trigonometry
- Chemistry
- Arithmetic
- Geometry
Chemical engineer experienced, chemistry, math, and english teacher. With 2years of experience
- Maths
- Trigonometry
- Chemistry
- Arithmetic
- Geometry
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About Amna
I have my torrefied material I want to test how much chlorine is in it ,guide me how I can do, is any any test or analysis equipment
If you want to measure chlorine content in your torrefied biomass (pellets or char), there are a few standard lab methods—ranging from quick screening to highly accurate elemental analysis. The right choice depends on how precise you need the data (e.g., for publication vs. quick internal check).
1. Ion Chromatography (IC) — Most Common & Reliable
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This is the most widely used method for chlorine in biomass.
How it works:
Sample preparation
Grind your torrefied sample (very fine powder).
Burn or digest it (often via combustion or water extraction).
Chlorine converts to chloride ions (Cl⁻).
Inject into IC → separates and quantifies chloride.
Output:
Chlorine reported as mg/kg or wt%
Why use it:
High accuracy
Standard in biomass fuel analysis
Suitable for publications and standards (like EN/ISO biomass testing)
2. Bomb Calorimeter + Chlorine Analysis (Combustion Method)
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How it works:
Burn sample in an oxygen bomb calorimeter
Chlorine forms HCl gas
Absorb in water → analyze using:
Ion chromatography OR
Titration
Why use it:
Good if you're already doing calorific value testing
Standard method in fuel labs
3. X-Ray Fluorescence (XRF) — Fast Screening
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How it works:
Directly scans your solid sample (no digestion needed)
Pros:
Very fast
Minimal preparation
Limitations:
Less accurate for low chlorine levels
Needs calibration for biomass
4. Schöniger Flask Combustion + Titration
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How it works:
Burn sample in flask with oxygen
Absorb gases in solution
Titrate chloride using silver nitrate (AgNO₃)
Why use it:
Cheaper (no advanced instruments)
Good for basic lab setups
Limitation:
Lower precision than IC
Which method should YOU choose?
For your torrefied food waste / EFB pellets (CITREX project):
Best choice: Ion Chromatography (IC)
If not available:
→ Bomb combustion + IC or titration
For quick screening:
→ XRF
Why Chlorine Matters (for your research/poster)
High Cl → corrosion in boilers
Causes dioxin formation during combustion
Affects fuel quality standards (important for commercialization)
Typical Chlorine Range (for context)
Raw biomass: 0.1 – 1 wt%
Torrefied biomass: usually lower (depends on treatment)
Practical Advice (Malaysia context)
You can check facilities at:
Universiti Malaysia Pahang Al-Sultan Abdullah (your university likely has IC or combustion analyzer)
Other options:
SIRIM Berhad
Universiti Teknologi Malaysia
If you want
I can:
Write step-by-step lab procedure (IC method) for your report
Help you add chlorine analysis section in your poster/thesis
Estimate expected chlorine reduction after torrefaction based on your data
Just tell me
Your techniques and teaching methodology
• Typical length of a lesson
• Your qualifications/experience as a tutor
• Who are your lesson for (level, age, etc.)
Here’s a clear, professional version you can use (for a profile, CV, or teaching statement). You can copy–paste and tweak based on your exact experience:
Teaching Techniques & Methodology
I use a student-centered and practical approach to teaching. My methodology focuses on:
Breaking complex concepts into simple, easy-to-understand steps
Using real-life examples, especially in engineering and science topics
Incorporating visual aids, diagrams, and problem-solving sessions
Encouraging interactive learning through questions and discussions
Providing practice exercises and past-paper questions to strengthen understanding
For technical subjects, I emphasize concept clarity + application, ensuring students can not only understand theory but also apply it confidently in exams and projects.
Typical Length of a Lesson
Standard lesson: 60 to 90 minutes
Can be adjusted based on student needs:
60 minutes → focused concept learning
90 minutes → concept + practice + revision
Qualifications & Experience
Background in Chemical Engineering / Biomass & Bioenergy research
Experience working on torrefaction, pelletization, and renewable energy projects
Strong knowledge in:
Mathematics
Physics
Chemistry
Engineering fundamentals
Experience in explaining complex academic concepts clearly, especially for university-level subjects
(You can add your degree, university, or years of tutoring if you want it stronger.)
Who Are My Lessons For?
My lessons are suitable for:
Secondary school students (science & math subjects)
Pre-university students (foundation, A-levels, matriculation)
University students (especially engineering and science fields)
I can adapt my teaching style for:
Beginners who need strong fundamentals
Advanced students preparing for exams, assignments, or research
If you want, I can also:
Make this more formal (for a tutoring website like Superprof)
Shorten it into a bio (100–150 words)
Customize it specifically for Malaysia students (SPM / STPM / university)
Inspire confidence, establish your legitimacy and reassure students of your professionalism.
This is one of the first things that the students will read about you, remember to take care of your spelling and grammar.
Here’s a polished, confident, and professional version you can use as your intro/profile statement:
Professional Teaching Statement
I am a dedicated and reliable tutor with a strong academic background in Chemical Engineering and renewable energy research. I take pride in delivering lessons that are clear, structured, and tailored to each student’s individual learning needs. My goal is not only to help students improve their grades, but also to build their confidence and understanding of the subject.
I approach every lesson with professionalism, punctuality, and preparation. Complex topics are broken down into simple, manageable steps, ensuring that students feel comfortable asking questions and actively participating in the learning process. I emphasize concept clarity, consistent practice, and real-world application—especially for science and engineering subjects.
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About the lesson
- All levels
- English
All languages in which the lesson is available :
English
I use a student-centered and practical approach to teaching. My methodology focuses on:
Breaking complex concepts into simple, easy-to-understand steps
Using real-life examples, especially in engineering and science topics
Incorporating visual aids, diagrams, and problem-solving sessions
Encouraging interactive learning through questions and discussions
Providing practice exercises and past-paper questions to strengthen understanding
For technical subjects, I emphasize concept clarity + application, ensuring students can not only understand theory but also apply it confidently in exams and projects.
See more
Rates
Rate
- RM50
Pack rates
- 5h: RM250
- 10h: RM500
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