Effects of soil organic matter and bacterial community shift on bioremediation of diesel-contaminated soil

Liu, Pao-Wen Grace; Chang, Tsung Chain; Chen, Chih-Hung; Wang, Mingzhi; Hsu, Han-Wei

doi:10.1016/j.ibiod.2013.01.010

Cited by 53 publications

(14 citation statements)

References 48 publications

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“…Contaminant removals observed in such a short remediation time are hardly achievable by other treatments, especially if they are bioprocess-based. In this case, diesel removal values not higher than about 80% and remediation times of up to 300 days were observed by several authors (Fern andez et al, 2011;Łebkowska et al, 2011;Li et al, 2007;Liu et al, 2013). More recently, Szulc et al (2014), in a study focused on assessing the influence of bioaugmentation and the addition of rhamnolipids on contaminant biodegradation during field studies of extended length (365 days), reported a maximum diesel removal of about 85%.…”

Section: Comparison To Other Literature Findingsmentioning

confidence: 56%

Lab-scale investigation on remediation of diesel-contaminated aquifer using microwave energy

Falciglia

Maddalena

Mancuso

et al. 2016

Journal of Environmental Management

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Aquifer contamination with diesel fuel is a worldwide environmental problem, and related available remediation technologies may not be adequately efficient, especially for the simultaneous treatment of both solid and water phases. In this paper, a lab-scale 2.45 GHz microwave (MW) treatment of an artificially diesel-contaminated aquifer was applied to investigate the effects of operating power (160, 350 and 500 W) and time on temperature profiles and contaminant removal from both solid and water phases. Results suggest that in diesel-contaminated aquifer MW remediation, power significantly influences the final reachable temperature and, consequently, contaminant removal kinetics. A maximum temperature of about 120 °C was reached at 500 W. Observed temperature values depended on the simultaneous irradiation of both aquifer grains and groundwater. In this case, solid phase heating is limited by the maximum temperature that interstitial water can reach before evaporation. A minimal residual diesel concentration of about 100 mg kg(-1) or 100 mg L(-1) was achieved by applying a power of 500 W for a time of 60 min for the solid or water phase, respectively. Measured residual TPH fractions showed that MW heating resulted in preferential effects of the removal of different TPH molecular weight fractions and that the evaporation-stripping phenomena plays a major role in final contaminant removal processes. The power low kinetic equation shows an excellent fit (r(2) > 0.993) with the solid phase residual concentration observed for all the powers investigated. A maximum diesel removal of 88 or 80% was observed for the MW treatment of the solid or water phase, respectively, highlighting the possibility to successfully and simultaneously remediate both the aquifer phases. Consequently, MW, compared to other biological or chemical-physical treatments, appears to be a better choice for the fast remediation of diesel-contaminated aquifers.

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Section: Comparison To Other Literature Findingsmentioning

confidence: 56%

Lab-scale investigation on remediation of diesel-contaminated aquifer using microwave energy

Falciglia

Maddalena

Mancuso

et al. 2016

Journal of Environmental Management

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“…The kinetic rates ( k ) were approximated by differentiation of [diesel concentration]/[diesel concentration] initial at each time slot. The k of the first stage pattern (0.02848/day–0.0461/day) in each bioremediation method was higher than that of the second stage pattern (0.00138/day–0.00278/day), which indicated that most of the biodegradable or bioavailable compounds were usually rapidly biodegraded during the first stage 20, 21 . In brief, the degradation efficiency of diesel was enhanced by immobilization.…”

Section: Resultsmentioning

confidence: 82%

Characteristic Assessment of Diesel-degrading Bacteria Immobilized on Natural Organic Carriers in Marine Environment: the Degradation Activity and Nutrient

Xue

Liu

et al. 2017

Sci Rep

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Oil spill has led to severe environmental and ecological problems. Due to the harsh environmental conditions, the bioremediation technology is not successfully used to remedy the oil spill in marine environment. In this study, immobilization technology was used to immobilize bacteria on natural organic carriers (i.e., wood chips and maize straw). The higher surface area of in wood chips leads to larger biomass density (0.0242 gVSS/g) than that of maize straw of 0.0097 gVSS/g carrier. Compared with biodegradation efficiency of free bacteria (44.79%), the immobilized bacteria on wood chips and maize straw reached to 73.39% and 52.28%, respectively. The high biological activity of the immobilized bacteria can be also explained by nutrients, such as TN (total nitrogen) and TP (total phosphorus), released from wood chips and maize straw, which was 8.83 mg/g and 5.53 mg/g, 0.0624 mg/g and 0.0099 mg/g, respectively.

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“…Therefore, biological processes are decelerated, even though a high amount of water is stored in clay soils [61]. Hydrocarbons can either be bound to soil organic matter or clay particles, reducing their bioavailability [62]. Clay soils are also usually characterized by a low porosity, which provides less space for bacterial growth and insufficient aeration, which are unfavorable conditions for hydrocarbon biodegradation [63].…”

Section: Uncontaminated Soilmentioning

confidence: 99%

“…In addition, the accumulation of toxic intermediates and metabolites can take place. These soil characteristics may result in decreased bioavailability of contaminants or repressed microbial activity [31,32,34,62]. Alternatively, the boost of hydrocarbonoclastic bacteria can cause a quick depletion of easily accessible and degradable hydrocarbons in the early stage of bioremediation.…”

Section: Microbial Respiration and Cell Countsmentioning

confidence: 99%

“…Alternatively, the boost of hydrocarbonoclastic bacteria can cause a quick depletion of easily accessible and degradable hydrocarbons in the early stage of bioremediation. As a result, the remaining fractions of hydrocarbon pollutants are often more recalcitrant and less bioavailable, thus inhibiting the proliferation of microorganisms and resulting in a reduced microbial biomass [22,36,62]. It has been also noted that introduced strains might not be able to coexist with the indigenous micro-community members [30,33,74] or cope with multiple environmental stressors and therefore, enter a zero-or low-activity state [26,75,76].…”

Section: Microbial Respiration and Cell Countsmentioning

confidence: 99%

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Intensification of Ex Situ Bioremediation of Soils Polluted with Used Lubricant Oils: A Comparison of Biostimulation and Bioaugmentation with a Special Focus on the Type and Size of the Inoculum

Bodor

Petrovszki

Kis

et al. 2020

IJERPH

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Used lubricant oils (ULOs) strongly bind to soil particles and cause persistent pollution. In this study, soil microcosm experiments were conducted to model the ex situ bioremediation of a long term ULO-polluted area. Biostimulation and various inoculation levels of bioaugmentation were applied to determine the efficacy of total petrol hydrocarbon (TPH) removal. ULO-contaminated soil microcosms were monitored for microbial respiration, colony-forming units (CFUs) and TPH bioconversion. Biostimulation with inorganic nutrients was responsible for 22% of ULO removal after 40 days. Bioaugmentation using two hydrocarbon-degrader strains: Rhodococcus quingshengii KAG C and Rhodococcus erythropolis PR4 at a small inoculum size (107 CFUs g−1 soil), reduced initial TPH concentration by 24% and 29%, respectively; the application of a higher inoculum size (109 CFUs g−1 soil) led to 41% and 32% bioconversion, respectively. After 20 days, all augmented CFUs decreased to the same level as measured in the biostimulated cases, substantiating the challenge for the newly introduced hydrocarbon-degrading strains to cope with environmental stressors. Our results not only highlight that an increased number of degrader cells does not always correlate with enhanced TPH bioconversion, but they also indicate that biostimulation might be an economical solution to promote ULO biodegradation in long term contaminated soils.

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Effects of soil organic matter and bacterial community shift on bioremediation of diesel-contaminated soil

Cited by 53 publications

References 48 publications

Lab-scale investigation on remediation of diesel-contaminated aquifer using microwave energy

Lab-scale investigation on remediation of diesel-contaminated aquifer using microwave energy

Characteristic Assessment of Diesel-degrading Bacteria Immobilized on Natural Organic Carriers in Marine Environment: the Degradation Activity and Nutrient

Intensification of Ex Situ Bioremediation of Soils Polluted with Used Lubricant Oils: A Comparison of Biostimulation and Bioaugmentation with a Special Focus on the Type and Size of the Inoculum

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