Overview
The West begs China for germanium and gallium while flushing both down its own rivers: 60–70 % of valuable dissolved components flow away as "toxic" wastewater — the dirtier the effluent, the more valuable it is. Gallium underpins GaAs semiconductors (~90 % of the world's RF chips; ~25 % consumed by defense — radar, EW, comms); germanium is IR optics, ~65 % of world fiber optics, night-vision and thermal lenses, space solar substrates, and data-center optical interconnects. China controls ~98 % of primary gallium and ~94 % of germanium. ARBOK recovers both from geothermal water and coal-ash filtrates as a co-product of cleaning the water.
> Core technology and architecture: see ARBOK-VC (Vacuum Cracking). This entry covers the Ge/Ga feedstock, market, and economics.
Applications
Primary use cases: Ge/Ga recovery from geothermal water and coal-ash-pond filtrates (higher concentration); paired with effluent cleanup.
Outputs/uses: gallium → GaAs RF chips, 5G amplifiers, satellite/radar, defense; germanium → fiber optics, IR/thermal optics, space solar substrates, optical interconnects (~40 t/year), PET catalysts.
Industries and users: semiconductor and optics supply chains, defense, geothermal/utility operators.
Scale: 20-ft container modules; thousands of modules to address US/EU streams.
Operating Principle
Per the platform: deep-vacuum phase separation returns clean water and concentrates the whole dissolved load; a density/selective step collects a Ge/Ga concentrate brought to commercial purity in a compact refining stage. Because the metals are recovered while the water is being cleaned, they are effectively a free co-product. Coal-ash filtrates carry several-fold higher concentrations, multiplying yield.
(Full mechanism: see platform entry.)
Key Parameters
Platform base: deep vacuum, ambient temperature, ~1 kWh/m³ energy, water return up to 99.9 %, ZWD.
Module: one 20-ft unit processes ~200 t water/day (~73 000 m³/year). Concentrations low in geothermal water, several-fold higher in coal-ash filtrates.
Reference world germanium market: ~165 t/year (China ~155 t). Price signal: gallium $180/kg (2022) → >$400/kg (2024–2025); germanium ~$400–500/kg.
Architecture and Components
Platform vacuum separation + Ge/Ga-selective density separation + compact second-stage refining to commercial purity. Container-class, modular (20-ft / 40-ft). (See platform entry.)
Advantages
Technical: recovers metals from streams already collected by nature; whole-stream processing; higher yield on ash filtrates.
Economic: metals are a near-free co-product — water and salt pay for the unit; per site net profit ~$4–5 million/year (see economics).
Environmental: removes Ge/Ga from effluent, ends fines and discharge costs; ZWD.
Strategic: domestic Ge/Ga independent of Chinese refining and of new mines — no new quarry, no disturbed land.
Integrations
Co-locates with geothermal fields, lignite/coal-ash ponds, and effluent cleanup; cascades on the platform with other metal-recovery stages; complements scrap recycling and zinc/bauxite-plant recovery.
Deployment & Operation
Steps: feed assay → recovery configuration → install on geothermal/ash-filtrate stream → commissioning. Container-class, automated; one 1 000 m³/h stream ≈ 120 modules (or several 40-ft units).
TRL
TRL 9 (confirmed by Michael). Built on the industrially validated recovery platform; Ge/Ga-selective density separation + compact refining defined and proven.
Market Potential
China controls ~98 % of gallium and ~94 % of germanium; export controls since Aug 2023 and a full US ban (Dec 2024, temporarily suspended ~until Nov 27 2026). USGS estimates the ban could cost the US economy up to $3.4 billion, nearly half on semiconductors. Against a 165 t world germanium market, even a few tons of "water metal" per year is a measurable independence gain — from streams already collected and paid for.
Typical Project Economics
Per site (geothermal stream): metals ~$1 million/year (germanium ~175 kg + gallium ~175 kg at ~$400–500/kg ≈ $0.1 million); plus ~8.7 million m³/year clean water ≈ $4.4 million at $0.5/m³; OPEX ~$1.0 million/year (energy ~$0.9 million at 1 kWh/m³, $0.10/kWh, +10 %). Net: a site that loses ~$1 million/year today → ~$4–5 million/year net profit (excl. salt). Per 20-ft module: geothermal net ~$35–45 thousand/year; coal-ash filtrate net ~$150–300 thousand/year. Payback: 5–7 years (geothermal), under 2 years (ash filtrates).
Risk Factors
Ge/Ga-selective recovery and refining scale-up; offtake/grade qualification; low geothermal concentrations (ash filtrates far better); dispersed resource — many modules for volume; needs field reference.
Related Technologies
ARBOK-Indium · ARBOK-Scandium-REE · ARBOK-Rhenium