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WELCOME TO GLC — GAVIN LOTTERING CREATIONS

Welcome to GLC — Gavin Lottering Creations

This isn’t a business. It’s a blog.

GLC is where I explore ideas at the intersection of organic chemistry, design, sustainability, and curiosity. It’s a space for thinking out loud, chasing insights, and asking better questions — especially about how we use the materials that shape our world.

You’ll find posts on:

  • Organic and green chemistry (explained for non-chemists)

  • Biomaterials and sustainable alternatives

  • The chemistry of everyday things — and how they could be better

  • Experiments with AI tools, philosophy, and scientific learning

This is a solo project, rooted in self-study, creative thinking, and a belief that you don’t need a lab coat to care about the chemistry around you.

I’m Gavin Lottering — a designer, communicator, and lifelong learner. GLC has evolved many times, but right now, it’s focused on one goal: exploring how smarter materials and cleaner chemistry can help us build a better future.

Thanks for stopping by. Dig in, read something, and if you're curious — stay curious.


Organic chemistry gets a bad reputation for being abstract—orbitals, energy levels, hybridization. These ideas are powerful, but they can feel invisible. To make them tangible, I like to turn atoms into characters and orbitals into arms. If you’ve seen the cartoon above, you’ve already met our hero. Let’s unpack what the picture is teaching—without equations, and without fear.


The Character

Think of the character’s body as the atomic nucleus. Everything interesting in bonding happens around it. The character stands on floors, each labeled with an energy level (n = 1, 2, 3…). These floors matter: only orbitals on the same floor can mix.

Translation: atoms don’t borrow orbitals from the basement (core electrons). They work with what’s on the current floor—the valence shell.

The Arms = Orbitals

Our character has two kinds of arms:

  • One round, flexible arm → the valence s orbital

  • Three long, directional arms → the valence p orbitals

These arms all live on the same floor (for carbon, that’s n = 2). That’s why they can be rearranged together.

Hybridization: Repositioning the Arms

Atoms want strong, evenly spaced bonds. But raw s and p arms point in awkward directions. So the atom repositions them—this is hybridization.

  • sp³: one s arm + three p arms → four identical arms, pointing to the corners of a tetrahedronThink methane and saturated carbons.

  • sp²: one s arm + two p arms → three identical arms in a plane, with one p arm left over

  • sp: one s arm + one p arm → two straight arms, with two p arms left over

Hybridization doesn’t create new electrons; it just re-aims the arms for better bonding.

σ Bonds: The Handshake

A σ (sigma) bond is a head-on handshake. Two atoms extend an arm straight toward each other and overlap directly along the line between nuclei.

Why σ bonds matter:

  • They’re strong

  • They’re symmetrical

  • They allow rotation (single bonds can spin)

Every bond has at least one σ bond. No handshake, no bond.

π Bonds: The Sideways Grip

A π (pi) bond is a side-by-side grip using the leftover p arms. After the σ handshake forms, the remaining p arms can overlap above and below the bond.

Why π bonds matter:

  • They’re weaker than σ bonds

  • They prevent rotation

  • They only exist in addition to a σ bond

That’s why:

  • Double bond = 1 σ + 1 π

  • Triple bond = 1 σ + 2 π

The Floors Matter (Energy Levels)

In the cartoon, you’ll notice the character stands on one floor while lower floors sit beneath. That’s deliberate.

  • Lower floors = core orbitals (like carbon’s 1s) → never involved in bonding

  • Current floor = valence orbitals → all the arms we care about

Hydrogen is special because it only has one floor and one arm (1s). Everyone else uses the s and p arms on their valence floor.

Why This Analogy Works

This cartoon isn’t just cute—it encodes real rules:

  • Why hybridization only uses valence orbitals

  • Why σ bonds are stronger than π bonds

  • Why double bonds are rigid

  • Why carbon can make such diverse structures

Once you see atoms as characters optimizing their arm positions, orbital theory stops feeling mystical and starts feeling practical.

Using Lignin for Disposable Water Purification & Mycelium-Based Design

As the world turns to sustainable materials to reduce reliance on petroleum-based plastics, lignin — one of the most abundant natural polymers on Earth — is emerging as a low-cost, biodegradable solution. When combined with sawdust, it forms a moldable, porous material known as Lignin Bio-Composite (LBC).

In this post, we explore two groundbreaking uses of LBC:

  1. As a single-use, compostable water filter, and

  2. As a substrate and mold for growing mycelium-based objects.



💧 Part 1: A Disposable Lignin Bio-Composite Water Filter

Why Use LBC as a Water Filter?

The porous, fibrous structure of lignin bio-composite gives it:

  • The ability to physically trap particles and sediment

  • Chemical affinity for binding some heavy metals and organic compounds (thanks to phenolic and hydroxyl groups)

  • A biodegradable lifecycle — the filter can be composted after use

This makes LBC a strong candidate for pre-filtration, rainwater filtering, or as a layer in multi-stage filters for emergency, outdoor, or off-grid use.

How to Make One:

🛠 Materials:

  • Lignin paste (extracted using an alkaline method from sawdust)

  • Sawdust or fine wood flour

  • Optional: biochar, clay powder, starch for added filtration

  • A mold in the shape of a disk or cone

  • Oven or air-drying setup

🧪 Steps:

  1. Mix lignin and sawdust (2:1 ratio) into a moldable paste.

  2. Shape into a thin disk or funnel that fits into a filter housing.

  3. Cure at 90–120 °C until rigid and dry.

  4. Use it to filter non-potable or rainwater — it can remove sediments, some heavy metals, and aromatic organics.

Once clogged or used up, discard it into compost — no plastic, no waste.

🔬 For advanced filtration: add biochar to enhance adsorption or pair with a second stage like activated carbon.

🍄 Part 2: Using LBC to Grow Mycelium-Based Objects

Lignin bio-composite is more than just a filter — it’s also an excellent substrate and mold filler for growing fungi. Certain fungi, like white rot species, can digest lignin and cellulose while forming a strong, foam-like network of mycelium. This natural structure can be grown into furniture, packaging, sculptures, and structural parts.

Why Use LBC with Mycelium?

  • LBC provides nutrients for fungal growth (carbon from lignin, cellulose from sawdust)

  • The moldable nature of LBC allows it to fill complex shapes

  • As the fungus grows, it uses the LBC as both food and structural binder

  • The resulting object can be heat-cured, making it rigid, durable, and biodegradable

How to Do It:

🧫 Materials:

  • Prepared LBC substrate (moist, not cured)

  • Mycelium spawn (e.g., Pleurotus ostreatus or Ganoderma lucidum)

  • Sterile environment or cleaned workspace

  • Mold (cone, bowl, brick, chair component, etc.)

🌱 Steps:

  1. Sterilize or pasteurize your LBC (steam or heat).

  2. Inoculate it with mycelium spawn and mix gently.

  3. Pack the moist mixture into a mold.

  4. Let it grow in a warm, humid space (22–28°C, dark) for 5–10 days.

  5. Remove & dry: once fully colonized, heat-kill the mycelium by baking (90–100°C).

  6. Optionally, seal or coat with natural wax, resin, or shellac.

The final product is lightweight, durable, and compostable — a brilliant blend of material science and biology.

🧠 Why It Matters

These innovations point toward a future where materials are grown, not manufactured — and where waste streams become resource streams.

Feature

LBC Filter Disk

LBC + Mycelium Object

Biodegradable?

✅ Yes

✅ Yes

Moldable?

✅ Yes

✅ Yes

Compostable?

✅ Fully

✅ Fully

Replaces Plastic?

✅ Filter cartridges

✅ Packaging, containers

DIY Friendly?

✅ Very

✅ With clean conditions


🌍 Final Thoughts

Lignin bio-composites are more than just an experiment — they’re a platform for regenerative design. Whether you're filtering water or growing a chair, you're building with chemistry that trees invented — and we’re only beginning to explore what’s possible.

Ready to try it yourself?Stay tuned for how to design molds, grow filters with fungi, or even brand your own bio-based filter products.

✳️ Tags:


Lignin is everywhere—and almost nowhere at the same time.

It’s the second most abundant natural polymer on Earth, the glue that gives wood its strength and rigidity. Yet in most industries it’s treated as waste, burned for heat rather than upgraded into materials, chemicals, or carbon products. What if you could change that—starting small, with sawdust, and growing step by step into a scalable process?

This post walks through how a lignin extraction process can evolve from a benchtop experiment into a garage-sized pilot plant, highlighting the mindset, stages, and equipment involved rather than just chemistry.



Why Start Small?

Process development isn’t about jumping straight to industrial scale—it’s about learning cheaply.

Every extraction method (kraft, soda, organosolv) involves trade-offs between purity, yield, capital cost, safety, and environmental footprint. By starting with small batches, you can:

  • Understand how different woods behave

  • See how lignin quality changes with temperature and solvent

  • Identify bottlenecks (filtration is usually the first)

  • Recover and recycle solvent early, before costs explode

Most importantly, you build process intuition—something spreadsheets can’t replace.

Stage 1: Bench-Scale Proof of Concept (Grams)

At the beginning, the goal is simple: can you consistently make lignin at all?

At this scale, a glass reactor or flask, ethanol/water solvent, and a small amount of acid are enough. Sawdust goes in, heat is applied, and lignin dissolves into the liquid phase. When you add water later, lignin precipitates out as a dark solid.

Success here isn’t measured by beauty—it’s measured by repeatability:

  • Does lignin precipitate every time?

  • Can it be filtered and dried?

  • Does it smell strongly of solvent or sulfur?

  • Does it re-dissolve in known lignin solvents?

If you can answer “yes” to most of these, you’re ready to move on.



Stage 2: Optimization and Learning (Hundreds of Grams)

Once the chemistry works, engineering problems appear.

Mixing suddenly matters. Heating takes longer. Filtration slows down. Washing steps multiply. At this stage, you refine the recipe and start thinking in terms of unit operations instead of reactions.

Questions you’ll start asking:

  • What solvent-to-wood ratio actually matters?

  • How much water is really needed to precipitate lignin?

  • How much solvent can I realistically recover and reuse?

  • Where does the process feel “sticky” or inefficient?

This is where lignin stops being a chemistry experiment and starts becoming a process.


Stage 3: Kilo-Scale Prototype (1–5 kg Batches)

Scaling to kilograms changes everything.

Glassware gives way to stainless steel. Manual pouring becomes pumped transfer. You stop thinking about individual steps and start thinking in batch cycles.

A typical kilo-scale flow looks like this:

  1. Extraction reactor – heated, stirred vessel

  2. Solid–liquid separation – filter or small press

  3. Solvent recovery – distillation and recycle

  4. Precipitation tank – lignin comes out of solution

  5. Final filtration and drying – solid product

At this point, solvent recovery becomes non-negotiable—not just for cost, but for safety. Closed systems, grounded equipment, and ventilation are essential.

You now have something real: a prototype lignin product you can hand to someone.

Stage 4: The Garage-Scale Pilot Plant

Here’s the surprising part: a real pilot plant can fit in a garage.

With careful design, a 5–10 kg per batch lignin process can live in a space roughly the size of a parking bay. The emphasis shifts from chemistry to integration.

Key features of a garage-pilot setup:

  • A 50–100 L extraction vessel (at atmospheric pressure for safety)

  • A dedicated filter (Nutsche or small press)

  • A small fractional distillation unit for ethanol recovery

  • A precipitation tank and vacuum dryer

  • Explosion-proof electrics and strong ventilation

This setup won’t compete with pulp mills—but it doesn’t need to. Its job is to generate data, samples, and confidence.

4

Scaling Is About Discipline, Not Size

One of the biggest misconceptions about scale-up is that it’s about making things bigger. In reality, it’s about making things more consistent.

Good scale-up keeps:

  • Chemistry unchanged

  • Mixing intensity comparable

  • Heating and cooling predictable

  • Solvent loops tightly closed

If your garage pilot works day after day, scaling to a warehouse or industrial site becomes a question of capital—not feasibility.

Why This Matters

Lignin isn’t just a byproduct—it’s a platform.

Carbon fibers, resins, foams, antioxidants, dispersants, battery materials: all are possible downstream paths. But none of them start at industrial scale. They start with a prototype, a batch notebook, and a stubborn willingness to solve unglamorous problems like filtration time and solvent losses.

Turning sawdust into something valuable isn’t magic. It’s process development—one careful stage at a time.

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