pH7 Technologies provides a proprietary organo‑electrochemical closed‑loop process that extracts critical and precious metals from primary ores, spent catalysts, and e‑waste. By integrating an electrochemical oxidizer into existing heap‑leach circuits, the technology achieves higher recoveries while cutting energy use up to 90%, water consumption by 99%, and emissions to near‑zero, delivering on‑site metal recovery and hydrogen generation without wastewater discharge.
Funding
$1.1M raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
PEFounders
Product
Problem
Conventional metal extraction and recycling rely on energy‑intensive smelting, cyanide leaching, and large water usage, resulting in high greenhouse‑gas emissions, wastewater generation, and limited recovery of critical and precious metals from complex ores and e‑waste streams.
Solution
pH7 Technologies offers a proprietary organo‑electrochemical closed‑loop process that extracts critical metals—including platinum‑group metals, copper, gold, tin, and others—from primary ores, spent catalysts, and pre‑treated e‑waste. The technology integrates an electrochemical oxidizer directly into existing heap‑leach circuits, enabling in‑situ oxidation of metal‑sulphur bonds and ligand‑mediated solubilization without the need for mills, concentrators, or smelters. Extracted metals are recovered via solvent extraction or ion exchange followed by electrowinning, while the spent solution is regenerated on‑site, producing on‑site hydrogen and eliminating wastewater. This approach delivers higher metal recoveries, reduces energy consumption by up to 90 %, cuts water use by 99 %, and achieves near‑zero CO₂e, SOₓ, and NOₓ emissions.
Target Audience
Primary customers are mining companies operating heap‑leach projects, metal recyclers processing spent catalysts and e‑waste, and industrial operators seeking to upgrade their metal recovery processes with lower environmental impact.
Features
- Proprietary organo‑electrochemical module added to heap‑leach flowsheets without major plant modifications
- In‑situ generation of a strong oxidizer that breaks metal‑sulphur bonds in oxide, transition, and sulfide ores
- Organic ligands bind oxidized metals for transport to solvent‑extraction or ion‑exchange units
- Electrowinning produces high‑purity metal cathodes or doré on‑site
- Closed‑loop regeneration of the lixiviant and on‑site hydrogen production
- Zero wastewater discharge and up to 50 % reduction in total GHG emissions versus conventional processes
- Applicable to diverse feedstocks: spent catalytic converters, diesel particulate filters, industrial catalysts, e‑waste, and complex mineral ores