Table 2.
Metal | Organic | Lowest metal concentration | Microbe(s) studied | Environment | pH | Reference |
---|---|---|---|---|---|---|
Cd2+ | TCA | 0.01 mg/L a | Indigenous community | Laboratory soil microcosms containing rice paddy and bottomland hardwood soils | 6.9–7.4 | [95] |
Cd2+ | TCA | 0.2 mg/L a | Indigenous community | Laboratory soil microcosms containing organic matter- rich soil | 6.8 | [95] |
Cd2+ | 2-CP; 3-CB | 0.5–1.0 mg/L b | Indigenous community | Aqueous sediment enriched in anaerobic growth medium | 7.0 | [15] |
Cd2+ | 2-CP; 3-CP | 20 mg/L b | Indigenous community | Sediment slurry | 7.0 | [73] |
Cr 6+ | 2-CP; 3-CB | 0.01–0.5 mg/L b | Indigenous community | Aqueous sediment enriched in anaerobic growth medium | 7.0 | [15] |
Cu2+ | 2-CP, 3-CB | 0.1–1.0 mg/L b | Indigenous community | Aqueous sediment enriched in anaerobic growth medium | 7.0 | [15] |
Cu2+ | 2-CP; 3-CP | 20 mg/L b | Indigenous community | Sediment slurry | 7.0 | [73] |
Cr 6+ | 2-CP; 3-CP | 20 mg/L b | Indigenous community | Sediment slurry | 7.0 | [73] |
Pb2+ | HCB | 0.001 mg/g b | Indigenous community | Microcosms containing contaminated sediment | NR | [116] |
Hg2+ | 2-CP; 3-CB | 0.1–1.0 mg/L b | Indigenous community | Aqueous sediment enriched in anaerobic growth medium | 7.0 | [15] |
Zn2+ | PCP | 2 mg/L b | Indigenous community | Anaerobic digester sludge in a liquid medium containing 0.6 mM phosphate | NR | [96] |
Zn2+ | PCP | 8.6 mg/L b | Indigenous community | Anaerobic enrichment cultures in serum bottles | NR | [72] |
3-CB, 3-chlorobenzoate; 2-CP, 2-chlorophenol; 3-CP, 3-chlorophenol; HCB, Hexachlorobenzene; PCP, Pentachlorophenol; NR, not reported; TCA, Trichloroaniline.
Value represents solution-phase concentration of metal present in system;
Value represents total metal added to system.