Influence of pH on the toxic effects of zinc, cadmium, and pentachlorophenol on pure cultures of soil microorganisms

Beelen, Patrick van; Fleuren-Kemilä, Arja K.

doi:10.1002/etc.5620160208

Cited by 40 publications

(27 citation statements)

References 25 publications

(26 reference statements)

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“…Acidity (due to CO 2 dissolution in water) may inhibit microbially mediated processes through heavy metal-induced toxicity or direct inhibition of microbial enzymatic activity (vanBeelen and FleurenKemila 1997;Wang et al 2006). However, acidity may thermodynamically favor microbial reductive dissolution of Fe(III) hydroxides (Kirk 2011), which are ubiquitous in the subsurface and are good sorbents of trace metals.…”

Section: Importance Of Organic Matter and Microorganismsmentioning

confidence: 99%

Geochemical Implications of CO2 Leakage Associated with Geologic Storage: A Review

Harvey¹,

Qafoku²,

Cantrell³

et al. 2012

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Leakage from deep storage reservoirs is a major risk factor associated with geologic sequestration of carbon dioxide (CO 2 ). Different scientific theories exist concerning the potential implications of such leakage for near-surface environments. The authors of this report reviewed the current literature on how CO 2 leakage (from storage reservoirs) would likely impact the geochemistry of near surface environments such as potable water aquifers and the vadose zone.Experimental and modeling studies highlighted the potential for both beneficial (e.g., CO 2 re-sequestration or contaminant immobilization) and deleterious (e.g., contaminant mobilization) consequences of CO 2 intrusion in these systems. Current knowledge gaps, including the role of CO 2 -induced changes in redox conditions, the influence of CO 2 influx rate, gas composition, organic matter content and microorganisms are discussed in terms of their potential influence on pertinent geochemical processes and the potential for beneficial or deleterious outcomes.Geochemical modeling was used to systematically highlight why closing these knowledge gaps are pivotal. A framework for studying and assessing consequences associated with each factor is also presented in Section 5.6. v

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Section: Importance Of Organic Matter and Microorganismsmentioning

confidence: 99%

Geochemical Implications of CO2 Leakage Associated with Geologic Storage: A Review

Harvey¹,

Qafoku²,

Cantrell³

et al. 2012

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“…Rhodococcus chlorophenolicus) [31] (e.g. Pseudomonas putida MT-2, Pseudomonas putida 50026, Rhodococcus erythropolis A177) [32] and (Rhizobium leguminosarum bioavar trifolii) [33].…”

Section: Effect Of Phenolsmentioning

confidence: 99%

Pollution Control and Remediation of the Tanning Effluent

Mwinyihija¹

2012

TOEPTJ

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Recent advances have been recorded in the tanning industry with biotechnology in principle playing a very important role through related applied research. This review paper demonstrates that a previously tagged tanning sector as the most hazardous can be resolved through adoption of cleaner technologies, waste management and remedial measures that can be put in place. Pollution is depicted stepwise along the leather processing phases with a selected xenobiotic and contaminants identified such as Sodium chlorides, Chromium, Sulphates, Chlorinated phenolics etc. As an interventionist strategy, biological tools using novel techniques of investigation are shown including the aquatic ecosystems. Remedial methods using known threshold in an identified tannery in Kenya is used to comprehend how to scale down the pollutants eventually. However it is recognised that though phytoremediation potential exist, it will require a combination of several other recently developed methods to provide a much firmer basis of controlling pollution loads related to the tanning Industry.

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“…Metals can precipitate with a phosphate buffer [26] and the buffer pH can have influence on toxicity [4]. The geometric average is the average log EC50 raised to the power of ten.…”

Section: Effects Of the Metals On Microorganisms From The Different Smentioning

confidence: 99%

Location‐specific ecotoxicological risk assessment of metal‐polluted soils

Beelen

Wouterse

Posthuma

et al. 2004

Enviro Toxic and Chemistry

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When chemical analysis indicates metal pollution, a second-tier method is needed to evaluate whether toxic effects occur at the polluted sites. A method based on pollution-induced community tolerance (PICT) was developed using samples taken from locations polluted with sewage more than 20 years ago. Microorganisms extracted from soil samples were exposed to a concentration range of zinc, nickel, copper, chromium (III), or chromium (VI) salts in a buffer suspension. The remaining activity of the intoxicated microorganisms was determined by color formation with 31 different organic substrates in microtiter plates. Microorganisms from moderately Zn-polluted sites (>45 mg/kg) showed an increased tolerance for zinc. Nickel tolerance was observed at 51 mg Ni/kg soil, chromium (VI) tolerance at 923 mg Cr/kg. In most cases, tolerance also was observed at higher concentrations. High concentrations of 1,494 mg Cu/kg or 3,935 mg Cr/kg did not show PICT, indicating a limited bioavailability of Cu and Cr at these sites. The benefits of our method are its greater sensitivity compared to other tests used at these sites, and its specificity for those metals that exceed allowable levels.

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Influence of pH on the toxic effects of zinc, cadmium, and pentachlorophenol on pure cultures of soil microorganisms

Cited by 40 publications

References 25 publications

Geochemical Implications of CO2 Leakage Associated with Geologic Storage: A Review

Geochemical Implications of CO2 Leakage Associated with Geologic Storage: A Review

Pollution Control and Remediation of the Tanning Effluent

Location‐specific ecotoxicological risk assessment of metal‐polluted soils

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