ExplainerOctober 9, 2026
LaMa separates the gel problem from the plastic recycling stream
Superabsorbents complicate wet processing; reported 200 kg/hour operation does not establish a route for every used diaper or construction mat.
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Explainers, teardowns, and myth-busting on waste management systems and green engineering.
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ExplainerOctober 9, 2026
Hereon puts breaking points into a styrene-based plastic
Bio-based content and deliberate chain cleavage change material design; fragments are not yet proof of a closed recycling loop.
ExplainerOctober 8, 2026
Modified cellulose catches lead in solar-cell recycling solvents
Sulfur-bearing binding sites work beyond water, but removal efficiency is not yet a closed metal-and-solvent recycling loop.
ExplainerOctober 7, 2026
ABTC’s $100 million black-mass licence exposes the refining gap
Shredding concentrates battery material; it does not produce battery-grade minerals, and an export authorisation is not a sales result.
ExplainerOctober 7, 2026
Fewer landfills can still receive more waste
EREF’s reported trends point to consolidation, but counts, tonnage, time periods and diversion rates must not be mixed.
ExplainerOctober 6, 2026
A sunlit bin lid can attack acetic acid — not every garbage smell
Lithium-modified manganese oxide links light and catalysis, but conversion, mineralisation and real odour control are different results.
ExplainerOctober 6, 2026
Taro roots and a zig-zag channel: how a farm wetland is supposed to work
Longer contact with roots and biofilms can help treatment, but flow, land area and pathogen data are still needed.
ExplainerOctober 5, 2026
AMP Portsmouth: mixed-waste sorting and biochar are two different proof points
The expanded system links recovery with carbon removal, but operating sorting capacity is not operating biochar capacity.
ExplainerOctober 3, 2026
Cornell’s DEER process repairs electrodes before they become black mass
An electrochemical bath preserves electrode structure, but coin-cell recovery is not yet a pack-scale recycling service.
ExplainerOctober 3, 2026
Rise Reforming’s container: biogas to syngas is only the first conversion
A modular reactor could serve stranded gas sources, but downstream chemistry, contamination and energy determine the business.
ExplainerOctober 2, 2026
Toray’s recovered carbon fibre: strong filaments are not a new aircraft wing
Chemical resin removal can protect fibre quality, but short-fibre products and structural composites answer different engineering questions.
ExplainerOctober 1, 2026
The missing phone loop: collection comes before urban mining
A $2.2 billion modelled mineral opportunity depends on retrieving phones, preserving reuse and building real downstream recovery.
ExplainerSeptember 30, 2026
How waste wool and graphene oxide make a tougher enzyme
Xiamen researchers wrap an extremophile enzyme in wool keratin and graphene oxide, boosting activity 1.42× and solvent tolerance. Promising, but reuse and scale are not yet industrial.
ExplainerSeptember 30, 2026
How molten salts turn plastic bags into fuel at 200°C
ORNL cracks polyethylene into gasoline-range fuel below 200°C using cheap aluminium-chloride salts. Clever chemistry — but lab-scale, polyethylene-only, and still a route to burning plastic.
ExplainerSeptember 29, 2026
Methane to succinate: why LLNL puts bacteria in a printed scaffold
A porous support tackles gas transfer, but a one-litre demonstration is not a landfill-ready chemical plant.
ExplainerSeptember 28, 2026
How the EU's metal scrap export ban would work — and why India is the biggest loser
From May 2027, non-OECD countries without an EU exemption can no longer import the bloc's metal scrap. India, the largest buyer of EU aluminium scrap, did not get one.
ExplainerSeptember 27, 2026
Indonesia's BRIN plan: waste to syngas, carbon nanotubes and captured CO2 — how each step works
BRIN is assembling AI sorting, gasification, plastic-to-nanotube conversion at 1,600 °C and calcium looping into one pipeline. Here is the chemistry of each stage and how much of it exists.
ExplainerSeptember 26, 2026
How sunlight turns plastic waste into hydrogen: inside Cambridge's 1 m² photoreforming panel
A semiconductor catches light, a cobalt–zirconium catalyst makes hydrogen, and dissolved plastic supplies the electrons. The first outdoor square-metre test works — modestly.
ExplainerSeptember 25, 2026
The EU wants 15% recycled plastic in new cars. Today it is 2.5%. Here is why the gap is so hard
The End-of-Life Vehicles Regulation mandates 15% recycled plastic from 2032 and 25% from 2036. To see why that is difficult, follow a car through the shredder.
ExplainerSeptember 24, 2026
Compost biocovers: how bacteria turn escaping landfill methane into CO2
Where a landfill is too small or old for gas collection, a layer of mature compost can host methane-eating bacteria that oxidise up to 35–40% of escaping methane — for around $48,000 an acre.
ExplainerSeptember 24, 2026
Phytomining: how pokeweed could pull rare earths out of mine waste
NC State researchers are growing native pokeweed on coal ash and acid mine sludge and using a UV laser to measure how much dysprosium the plants absorb. It is a measurement breakthrough, not yet a supply chain.
ExplainerSeptember 23, 2026
How fungi eat industrial waste: the four tools of mycoremediation
White-rot fungi evolved to digest wood. The same enzymes attack dyes, oil and some plastics, and their cell walls soak up heavy metals. A 2026 review maps what works — and where the evidence runs thin.
ExplainerSeptember 22, 2026
How a reusable cup loop works at the Big House — and why it only covers the suites
Michigan Stadium has launched a reusable cup programme with Bold Reuse and SOLO. The loop is simple. Scaling it from premium seating to 100,000 fans is not.
ExplainerSeptember 22, 2026
Alberta bans solar panels from landfill: how panel recycling works, and who pays
From October 1, Alberta charges $14 on every new panel and bans end-of-life panels from landfill. Here is how a panel is taken apart, and why the fee is already contested.
ExplainerSeptember 21, 2026
Glue and elevators: how two sizes of bubble pull 90% of microplastics out of wastewater
RMIT researchers upgraded a 1960s treatment step — dissolved air flotation — by pairing microbubbles with nanobubbles. Lab results top 90% microplastic removal. Here is the mechanism and the caveats.
ExplainerSeptember 21, 2026
How a single ruthenium atom could unlock lignin, the plant waste we mostly burn
Lignin is up to 35% of farm and forestry waste and almost all of it is burned for low-grade heat. A Manchester single-atom catalyst cuts both of its toughest bond types at once — here is how, and what the paper does not yet tell us.
ExplainerSeptember 20, 2026
Amino Acid Salts Can Scrub CO2 Out of Biogas. Just Not Quite Enough
A Stuttgart process separates 92.3% of the CO2 from raw biogas using a benign solvent. Gas grids want methane above 96%.
ExplainerSeptember 19, 2026
800,000 Tons of Recyclable Film and Not Enough Buyers
The US generates roughly 800,000 tons of recoverable polyethylene film a year. Twenty-seven reclaimers can process it, and fewer than half will take household film.
ExplainerSeptember 19, 2026
California Recycles 37% of Its Carpet. That Number Took Fifteen Years
The first carpet EPR programme in the US now runs 174 drop-off sites and recycles 78.5 million pounds a year. It is also a lesson in how slowly EPR moves.
ExplainerSeptember 18, 2026
A Wastewater Cell That Powers Itself and Pulls Fertiliser Out of the Stream
Temple and NJIT researchers built a treatment cell that generates seven times more electricity than it consumes while recovering struvite. At bench scale.
ExplainerSeptember 18, 2026
A Catalyst That Dissolves a Plastic Designed Never to Melt
pDCPD is a cross-linked thermoset with no recycling route. A ruthenium catalyst and a stirred solvent take it apart - and leave the carbon fibre intact.
ExplainerSeptember 17, 2026
Quebec Made Blue-Bin Glass Good Enough to Become a Bottle Again
For decades half of Quebec's curbside glass was buried as landfill cover. A $20M optical-sorting upgrade finally gets it clean enough for the furnace.
ExplainerSeptember 16, 2026
What Drips Out of a Landfill, and New York's Plan to Treat It
Rain moves through buried waste and comes out carrying PFAS. Municipal wastewater plants were never designed to remove it. New York proposes making landfills do it on site.
ExplainerSeptember 15, 2026
An Enzyme From a Compost Heap Cuts Polyurethane. Slowly.
A Danish team found a bacterial enzyme that cleaves untreated polyurethane foam and nylon with no pretreatment. Three days of it removed 1.4 percent of a shoe sole.
ExplainerSeptember 14, 2026
The Sensor Under the Belt: How Magnetic Fingerprinting Finds a Hidden Battery
Litech mounts a flat sensor beneath an existing conveyor and reads magnetic signatures every millisecond, aiming to flag concealed lithium cells before they reach the shredder. The mechanism is elegant. The numbers are missing.
ExplainerSeptember 13, 2026
Terahertz Sorting: Seeing Through the Plastics That Near-Infrared Cannot
Near-infrared sorters are blind to black plastic and confused by multilayer film. Terahertz sensing sees through both. The physics is real; the belt speed and the detector price are not there yet.
ExplainerSeptember 13, 2026
Silex World and Magnet Recycling: The Chemistry Works, the Collection Does Not
Recovering neodymium and dysprosium from used magnets has been technically demonstrated many times over. Almost none of it happens, and the reason has nothing to do with metallurgy.
ExplainerSeptember 13, 2026
AIST's ABCS Reactor: Splitting Digestion in Two to Stop It Souring
Japan's AIST reports a two-stage anaerobic digestion design that keeps acid production and methane production in separate vessels. The concept is decades old; the claim is that this configuration holds up at high loading.
ExplainerSeptember 12, 2026
Marine Microbes Turning Food Waste Into Protein: Good Biology, Unresolved Regulation
A Chinese research group reports converting food waste into single-cell protein using salt-tolerant marine microorganisms. The salt tolerance is a genuine engineering advantage. Feed approval is where this stalls.
ExplainerSeptember 10, 2026
Satellites Can See Landfill Methane Now. Detection Is Not the Same as Repair.
Orbital spectrometers have found large landfill methane plumes that operators reported as far smaller. The measurement gap is now well documented; the enforcement and engineering response is not.
ExplainerSeptember 10, 2026
Bacteria Built a Molecule That Grabs Gallium. Now Comes the Hard Part.
Siderophores bind metals with extraordinary selectivity because bacteria evolved them to scavenge iron. Repurposing that chemistry for gallium and rare earths in e-waste is elegant, and the cost per gram is the whole question.
ExplainerSeptember 9, 2026
Black Soldier Flies Convert Food Waste Fast. The Constraint Is the Law.
Larvae turn organic waste into protein in about two weeks with high conversion efficiency. Whether that protein can legally be fed to anything is decided by regulation, not by biology.
ExplainerSeptember 9, 2026
Carbonating Demolition Waste: How Old Concrete Absorbs CO2 Back
Crushed concrete reacts with CO2 to form calcium carbonate. Done deliberately, that upgrades recycled aggregate and stores a modest amount of carbon — and the modest part is where most reporting goes wrong.
ExplainerSeptember 8, 2026
Sewage plants are quietly mining fertiliser out of your wastewater
Three ions that a treatment plant desperately wants gone will, under the right conditions, snap together into a crystal worth selling. The same crystal also destroys the pipes. Here is the mechanism.
ExplainerSeptember 7, 2026
Biocarbon in Blast Furnaces: The Volume Problem Nobody Solves
Replacing metallurgical coal with pyrolysed biomass is chemically straightforward and physically constrained. The binding limits are biomass supply and the crush strength of the char, not the reduction reaction.
ExplainerSeptember 6, 2026
Acrylic Is the One Plastic That Really Does Unzip
PMMA depolymerises back to its own monomer at high yield with nothing more exotic than heat. It is the clearest existing example of true chemical recycling — and the reason it stays rare is collection, not chemistry.
ExplainerSeptember 6, 2026
Microwaves and Deep Eutectic Solvents: A Gentler Route to Battery Lithium
Conventional battery recycling dissolves cathodes in hot mineral acid. Microwave-assisted leaching in a deep eutectic solvent does the same job at lower temperature, in minutes, with a solvent you can in principle reuse.
ExplainerSeptember 5, 2026
One Enzyme That Eats Bioplastic and Penicillin
A soil-derived enzyme called LCPH1 breaks down long-chain polyester bioplastics and cleaves the penicillin beta-lactam ring. It is much better at the second job than the first, which is the detail worth sitting with.
ExplainerSeptember 3, 2026
Magnetic Microrobots for Microplastics: What the Numbers Actually Show
A magnetically driven MXene microrobot removes most microplastic particles from water and rather less from soil. The recovery figures are real; the retrieval and leaching questions are the ones that decide whether it ever leaves the lab.
ExplainerSeptember 1, 2026
The recycling black sheep: sorting the film that optical sorters cannot see
Flexible film and black plastic defeat the two technologies a modern sorting plant relies on. A Finnish process uses density and water instead — and a 50,000-tonne plant is being built around it.
ExplainerAugust 31, 2026
A raft of reeds cut a lagoon's methane by up to two-thirds
Wastewater treatment lagoons are cheap, common, and quietly among the largest methane sources in the water sector. A four-year Australian trial floated plants on one and measured what happened.
ExplainerAugust 31, 2026
Dirty PET goes in. An underwater glue and a stronger plastic come out.
Conventional PET recycling wants clean, clear, single-stream bottles. Oak Ridge built a catalyst-free route that takes the contaminated stuff and splits it into two high-value materials instead of low-grade flake.
ExplainerAugust 30, 2026
Two waste piles, one reaction: calcite and hydrogen at the same time
An Ohio State team pairs steel slag and coal ash with captured CO2, mineralises the carbon into calcite, and spends the heat that reaction gives off on splitting water. Here is the mechanism — and what the paper does not tell you.
ExplainerAugust 29, 2026
How a car engine becomes a chemical plant that makes fuel from landfill gas
Emvolon just signed a $450M offtake deal with Freepoint. The mechanism underneath it is unexpectedly simple: run a mass-produced automotive engine deliberately fuel-rich and it stops being a combustor and starts being a reformer.
ExplainerAugust 29, 2026
The molecular clamp that grabs gold when you flip a switch
A University of Illinois team redesigned the extraction molecule itself so the organic liquid conducts its own current. It pulled 89% of the gold out of real e-waste leachate — with one to two orders of magnitude fewer reagents.
ExplainerAugust 28, 2026
The magnet that cracks itself apart: how hydrogen decrepitation closes the rare-earth loop
Expose a neodymium magnet to hydrogen and it fractures along its own grain boundaries into a demagnetised powder that can be pressed straight back into new magnets. The mechanism is elegant. Getting the magnets out of the devices is the hard part.
ExplainerAugust 28, 2026
Scrap car aluminium has an iron problem. Oak Ridge designed an alloy that eats it.
Shredders mix steel rivets into aluminium body sheet, and iron makes recycled aluminium brittle. ORNL's answer was not to purify the scrap but to design an alloy that tolerates the contamination — found by screening two million calculations and verified with neutrons.
ExplainerAugust 27, 2026
How collapsing bubbles and cold plasma break a carbon–fluorine bond
Two non-thermal routes to destroying PFAS were reported this week. Both work by concentrating the target at a bubble surface, and both prove it the only honest way — by measuring the fluoride that comes off.
ExplainerAugust 26, 2026
An LLM on top of a decade of landfill wellhead data
Loci Controls put a language model over the largest continuous dataset of landfill gas wellhead behaviour. The useful part is not the model — it is that the data density regulators are about to require makes interpretation the bottleneck.
ExplainerAugust 26, 2026
When a landfill "catches fire" without a flame
An Elevated Temperature Landfill is not a fire. It is a landfill where heat outruns the gas system, the methane-making microbes die, and chemistry takes over — without needing oxygen, which is exactly why it is so hard to stop.
ExplainerAugust 25, 2026
AI-designed zinc sponges for methane — and the gap before a landfill
A Chicago-led team closed the loop from data mining to synthesised, tested metal-organic frameworks for methane capture. Two new materials work at ambient conditions in a lab. Landfill gas is wet, dirty and nothing like a lab.
ExplainerAugust 25, 2026
The plastic that evaporates at 90 °C — and rebuilds itself
A Surrey team made a polyethylene-like polymer that turns to vapour at around 90 °C and condenses back into the same solid. The mechanism is elegant. The distance between it and a recycling system is the whole story.
ExplainerAugust 24, 2026
Can kimchi scraps become biodegradable plastic?
Engineered E. coli grown on radish-trimming hydrolysate accumulated poly(3-hydroxybutyrate) to 75.6% of dry cell weight. That is a real fermentation result. It is not yet a material, a plant, or a lower-impact life cycle.
ExplainerAugust 23, 2026
Can mixed plastic waste become the building blocks for new plastics?
Covestro is backing BioBTX to build a commercial plant in Delfzijl that turns hard-to-recycle plastic into benzene, toluene and xylene. The chemistry is straightforward. The evidence is a construction schedule.
ExplainerAugust 22, 2026
Meet the solar-powered garbage robot
A Chandigarh University patent describes a mobile machine that finds waste, picks it, splits it wet from dry, compacts it and drives it away. The mechanism is easy to picture. The evidence is not there yet.
ExplainerAugust 21, 2026
How biohazardous lab plastics can become recyclable material
Laboratory plastic is regulated waste before it is a material. A new on-site system shreds, disinfects and dewaters it where it is generated, so what leaves the building is polymer flake rather than a hazard consignment. The step from flake to product is the one still missing.
ExplainerAugust 20, 2026
Can aircraft waste become an aerogel?
Carbon-fibre epoxy composites are among the hardest materials to recycle, because the resin will not melt back. A team at NUS skips fibre recovery entirely and turns the whole waste stream — fibre and epoxy together — into a freeze-dried porous block.
ExplainerAugust 19, 2026
The sunlight-and-catalyst filter that attacks wastewater pollutants
Photocatalysis usually arrives as a powder you then have to fish back out of the water. Fixing the catalyst to a resin bed turns it into something closer to a treatment step: water in one end, oxidised organics out the other.
ExplainerAugust 18, 2026
Can LFP batteries be recycled without dissolving them?
Iron-and-phosphate cathodes are cheap, which is exactly why conventional recycling struggles to pay for them. Direct regeneration takes a different route: repair the cathode powder instead of breaking it back down into salts.
ExplainerAugust 17, 2026
Can wastewater be a mine? The coagulant loop, explained
A UK startup just raised £700,000 to pull aluminium and iron treatment chemicals back out of water-plant sludge. It is a good excuse to explain a circular loop most people never see: the chemicals that clean water can themselves be recovered.
ExplainerAugust 16, 2026
The three-day composting machine, explained
Shah Alam is turning food waste from 2,000-plus premises into fertiliser in three to four days. That speed is not magic — it is source separation, moisture control and managed aerobic biology. Here is what happens inside, and the data the report leaves out.
ExplainerAugust 15, 2026
The battery-fire tripwire inside an MRF
CP Group's Sentry pairs X-ray with RGB cameras and AI to spot batteries and propane cylinders on a moving recycling line. Circular Services is installing it now — here is how the detection zone works, and which numbers nobody has published yet.
ExplainerAugust 14, 2026
Rain gardens that think ahead
A rain garden is a passive filter: rain goes in, soil and microbes do what they can. UNSW put sensors and a forecast-driven valve on one. Here is how holding water longer changes the chemistry inside the bed.
ExplainerAugust 13, 2026
Can old solar panels be "flotation-mined" for silver?
A University of Newcastle pilot ran end-of-life solar cell material through continuous froth flotation and recovered virtually all of its silver. Here is the mechanism, stage by stage — and what "nearly 100%" actually covers.
ExplainerAugust 12, 2026
Can a wetland be a wastewater treatment plant? The Fe-Mn biochar upgrade
A planted gravel bed is a reactor, not a garden. A new study swaps the gravel for iron-manganese modified rice-husk biochar - and reports strong nitrogen and phosphorus removal on wastewater too carbon-poor for conventional denitrification.
ExplainerAugust 11, 2026
The sewage lagoon that still leaks methane
A lagoon treatment train can strip pollution out of sewage and still push methane into the air. A paper published on 10 August measured one facility at roughly 2.0-2.3 times its reported estimate. Here is where the gas escapes.
ExplainerAugust 10, 2026
How an AI-assisted MRF actually sorts your recycling
Abu Dhabi is building a 400,000 tonne-a-year material recovery facility with optical sorting and AI. Here is what that machinery actually does to a conveyor belt of mixed waste - and what still falls off the end as residue.
ExplainerAugust 7, 2026
Dirty solvent in, reusable solvent out: the distillation loop behind on-site recycling
A US$25m financing deal for on-site solvent recycling is a good excuse to look at the mechanism itself: how heat, vapour and a condenser separate reusable solvent from everything else - and what the leftover still bottoms actually cost you.
ExplainerAugust 6, 2026
Why landfill methane spikes when the weather turns
A two-and-a-half-year monitoring run at a New Jersey landfill estimated roughly five times the methane previously reported. The mechanism is seasonal, and it is not exotic.
ExplainerAugust 5, 2026
Turn phenols into a solid: the wastewater electrode that recovers pollution
Most advanced oxidation burns a pollutant down to CO2. A new iodine-shuttling anode does the opposite: it stitches phenols together into an insoluble solid you can filter out.
ExplainerAugust 5, 2026
Can a landfill machine run itself?
WM has moved a bulldozer operator out of the cab and is preparing to test an autonomous compactor. Here is what each step in that ladder actually changes on the working face.
ExplainerAugust 1, 2026
Electric Pulses, Bacteria, Biogas: A Three-Stage Loop for Biopharma Wastewater
A BITS Pilani system disinfects pharmaceutical wastewater with electric pulses, digests the organics biologically, and turns the leftover sludge into methane. Here is the logic of each stage.
ExplainerAugust 1, 2026
How Alkaline Thermal Treatment Pulls Hydrogen Out of Unsorted Plastic
A new PNAS study converts mixed PET, PE and PP into >90% pure hydrogen in one reactor — no polymer sorting, and most of the carbon never reaches the gas phase.