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Table 2 Treatments for Precipitation Experiments

From: Inducing mineral precipitation in groundwater by addition of phosphate

Treatment

Description

Abiotic Control Treatment (AC)

SGW only

Organic Acid Treatment (OA)

SGW with organic acid mixture*

"Low" Concentration Cell Treatment (LC)

SGW with 105 cells mL-1

"High" Concentration Cell Treatment (HC)

SGW with 107 cells mL-1

  1. *The organic acid composition in Treatment OA was as follows: propionate (0.012 mM), isovalerate (0.01 mM), formate (0.003 mM), butyrate (0.01 mM). Propionate, formate and butyrate were added to the SGW as sodium salts. Isovalerate was added as an ammonium salt.