The decision
Which reactions explain the water chemistry?
Measured concentrations alone do not explain the system, or you need to test how changing chemical conditions could affect mineral reactions or contaminant mobility.
What the work can include
- Review water chemistry, mineralogical information and data quality.
- Develop a conceptual model consistent with the evidence and the project question.
- Use appropriate geochemical tools, including PHREEQC, to test reactions and scenarios.
- Explain sensitivity, uncertainty and the limits of the chosen model.
- Examine aqueous-speciation questions in industrial waters or mineral-processing studies, where the chemistry and evidence fall within the agreed scope.
Potential outputs
The exact deliverables are agreed in the scope. A package can include:
- An agreed conceptual geochemical model.
- Documented calculations and model inputs within the agreed scope.
- Scenario comparisons and interpretation of key sensitivities.
- A technical note connecting the results to the decision.
Clear scope. Useful output.
A defined question, agreed deliverables and a transparent account of assumptions make the work easier to use.