Sustainable aviation
Sustainable Aviation Fuel Refineries

Flight, reimagined from carbon to kerosene.

Kalib Williams Investments builds zero-emission refineries producing ASTM D7566 approved jet fuel — with real aromatics — through hydrothermal liquefaction and Fischer–Tropsch synthesis.

The Technology

Two ASTM-approved routes to genuine jet fuel.

We do not make a blendstock that must be diluted into petroleum. We assemble fully specification-compliant kerosene — complete with the aromatics aviation demands — through two complementary conversion pathways.

PATHWAY 01

Hydrothermal Liquefaction

ASTM D7566 Annex — HC-HEFA / wet-biomass conversion

Hydrothermal Liquefaction (HTL) converts wet, low-value organic feedstocks directly into a stable biocrude using water itself as the reaction medium — eliminating the energy penalty of drying.

Conditions
280–370 °C · 150–250 bar subcritical water
Feed state
Wet slurries — no drying required
Primary product
Energy-dense biocrude → upgraded jet range
Upgrading
Catalytic hydrotreating & isomerization

PATHWAY 02

Fischer–Tropsch Synthesis

ASTM D7566 Annex A1 — FT-SPK / FT-SPK/A

The Fischer–Tropsch route gasifies carbon-bearing feedstocks into synthesis gas, then catalytically rebuilds long-chain hydrocarbons — a fully synthetic jet fuel assembled molecule by molecule.

Step 1
Gasification → syngas (CO + H₂)
Step 2
Cobalt / iron catalytic FT synthesis
Step 3
Hydrocracking & fractionation to jet cut
Spec
FT-SPK / FT-SPK/A with aromatics

Feedstock Flexibility

One refinery. Nearly any carbon source.

Our process is engineered around feedstock diversity — from captured atmospheric carbon to agricultural residue — so supply is resilient and carbon intensity keeps falling.

Direct Air Capture & Emission-Grown Algae
CARBON-NEGATIVE

Direct Air Capture & Emission-Grown Algae

Algae cultivated on captured atmospheric and industrial CO₂ — turning emissions into energy-dense biogenic oil.

LIGNOCELLULOSIC

Wood Waste

Forestry residues & mill offcuts gasified for FT synthesis.

ALCOHOL

Bioethanol

Renewable ethanol as an alcohol-to-jet precursor.

ALCOHOL

Biomethanol

Green methanol feeding methanol-to-hydrocarbon routes.

WET WASTE

Biosolids

Municipal biosolids liquefied via HTL — no drying.

RESIDUE

Agriculture Waste

Straw, husks & bagasse diverted from open burning.

LIPID

Biogenic Oils

Waste fats, greases & plant oils rich in hydrocarbons.

CO-FEED

Traditional Fossil Feedstocks

Conventional streams co-processed to unlock drop-in scale today.

Co-feeding & The Product

No blending.
A finished fuel.

By co-feeding renewable feedstocks alongside traditional streams, we integrate them within a single conversion process. The result eliminates the necessity of blending a synthetic component back into petroleum jet fuel.

Because our fuel already contains aromatics, it meets the ASTM D7566 specification as an approved product — not a blend-limited additive.

Co-processing, not diluting

Renewable and conventional feedstocks enter the same refinery, converting together into one specification-grade product stream.

Aromatics included by design

Our FT-SPK/A and HTL-derived cuts carry the aromatic content required for elastomer sealing and energy density in existing aircraft.

ASTM D7566 approved

The output is a fully approved jet fuel product, ready to deliver without the blend-ratio ceilings that constrain pure synthetics.

Clean refinery
Carbon Intensity

Lower carbon, engineered — not offset on paper.

We reduce the carbon intensity of our fuels two ways: by permanently sequestering CO₂, and by operating the refinery entirely on clean electricity — all while the process itself produces no emissions.

0
EMISSIONS

The refinery operates producing no emissions.

100%
CLEAN POWER

Operations run entirely on clean electricity.

PERMANENCE

CO₂ is sequestered permanently, not offset.

D7566
ASTM SPEC

Aromatic-containing, fully approved jet fuel.

About

Kalib Williams Investments

We finance, develop and operate sustainable aviation fuel refineries designed around feedstock flexibility and permanent decarbonization. Our thesis is simple: the fastest path to lower-carbon flight is a drop-in, ASTM-approved fuel that airlines can use today — no new engines, no blend-ratio ceilings.

By pairing hydrothermal liquefaction and Fischer–Tropsch synthesis with a zero-emission, clean-powered facility and permanent CO₂ sequestration, we turn waste and captured carbon into certified jet fuel — and turn the aviation supply chain into a carbon sink rather than a source.

Contact

Let's decarbonize
flight together.

Whether you're an airline, investor or feedstock supplier, tell us how you'd like to work with Kalib Williams Investments.

kalibwilliamsinvestmentsllc@gmail.com Connect on LinkedIn
Kalib Williams Investments

Sustainable Aviation Fuel

Zero-emission refineries producing ASTM D7566 approved jet fuel from renewable and captured-carbon feedstocks.

© 2026 Kalib Williams Investments LLC. All rights reserved.