VOC-monitoring at Hydrovolt, Fredrikstad (VOC Hydrovolt 2023)

Hydrovolt is a joint venture owned by Hydro (NO) and Northvolt (SE), and the company operates a battery recycling facility in Fredrikstad, S-E Norway.

The purpose of the NILU monitoring was to quantify the levels of VOCs (Volatile Organic Compounds) at the Hydrovolt plant. The sampling took place at various steps throughout the production line.

The NILU technology to remove hydrogen fluoride (HF) was applied. If HF is not removed, HF can dissolve the Tenax^TM sampling material and hence give erroneously high concentrations of VOCs.

There was also sampling of nitrogen dioxide (NO₂), hydrogen fluoride (HF), ozone (O₃), sulphur dioxide (SO₂), formic acid (HCOOH), and acetic acid (CH₃COOH) using passive samplers.

The monitoring results will be sent to Norwegian authorities (County Governor) to document components emitted from the Hydrovolt facility.

For all practical purposes, the volume flow emitted from Hydrovolt is small (55 m³/h) and the total amount emitted is regarded as minor.