Biostimulation and bioaugmentation of native microbial community accelerated bioremediation of oil refinery sludge

Roy, Ajoy; Dutta, Avishek; Pal, Siddhartha; Gupta, Abhishek; Sarkar, Jayeeta; Chatterjee, Ananya; Saha, Apu Kumar; Sarkar, Poulomi; Sar, Pinaki; Kazy, Sufia K.

doi:10.1016/j.biortech.2018.01.004

Cited by 244 publications

(113 citation statements)

References 50 publications

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“…Microbial biostimulation was essential from control soil, without the presence of metals to samples containing metal tailings from the mining disruption (100%), favoring the beginning of the restoration of equilibrium of that affected site. The same was observed by Roy et al (2018), when studying the effect of microbial biostimulation in soils affected by hydrocarbons, being fundamental for the aid of contaminant biodegradation. Régo et al (2014), studying the effects of ametryne herbicide on microbial activity, observed that the addition of biofertilizer was essential for microbiota biostimulation, favoring increased microbial respiration.…”

Section: Figure 2 Quantification Of Co2 Accumulation After Microbialsupporting

confidence: 64%

Impacts of Heavy Metals on Soil Microbial Activity

Régo¹,

Tornisielo²

2020

JEE

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Concern about soil quality has been increasing due to environmental impacts from anthropogenic actions. The imbalance between its components alters activities in ecosystems. One of the main actions affecting soil quality is the presence of heavy metals, impairing the functioning of the ecosystem. This work evaluated the impacts of metal-contaminated soil on microbial activity after dam failure in Minas Gerais State, Brazil. Microbial respiration measurements and colony quantifications were used for evaluations. Thus, it is hoped that through these bioindicators, we can assess the quality of the environment and from these biostimulators restore the environmental balance, benefiting local communities affected by the disaster. After microbial biostimulation of the soil, there was an increase in the number of bacterial colonies as well as greater accumulation of CO2 over the days. Thus, the addition of nutrients to the metal-impacted soil was essential for initiating the restoration of the affected ecosystem equilibrium.

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Section: Figure 2 Quantification Of Co2 Accumulation After Microbialsupporting

confidence: 64%

Impacts of Heavy Metals on Soil Microbial Activity

Régo¹,

Tornisielo²

2020

JEE

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“…At present, the major strategies of PH remediation include physical, chemical and biological methods . Economical, efficient and environment‐friendly bioremediation has been widely applied to deal with PH contamination . Bioremediation methods for PH, including phytoremediation and microbial remediation technology, have shown great research and application value .…”

Section: Introductionmentioning

confidence: 99%

“…[7][8][9] Economical, efficient and environment-friendly bioremediation has been widely applied to deal with PH contamination. 10 Bioremediation methods for PH, including phytoremediation and microbial remediation technology, have shown great research and application value. 11 In particular, microbial remediation technology has exhibited high restoration efficiency in the remediation of PH pollution.…”

Section: Introductionmentioning

confidence: 99%

Microbial community dynamics and functional responses that contribute to tolerance of high concentrations of petroleum hydrocarbon

Cui

Liu²,

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND It is a common problem that high‐concentration petroleum hydrocarbon (hc‐PH) is difficult to degrade and remove using biological methods. RESULTS In this study, when the concentrations of petroleum hydrocarbon (PH) were increased from 972.4 ± 40.3 to 6953.8 ± 294.3 mg L−1, all degradation rates of PH by activated sludge (AS) were beyond 79%. However, the degradation rate of hc‐PH (from 9958.3 ± 401.6 to 19 953.3 ± 896.5 mg L−1) by AS was significantly lower than that of low‐concentration petroleum hydrocarbon (lc‐PH) (from 972.4 ± 40.3 to 6953.8 ± 294.3 mg L−1). Meanwhile, the heterotrophic microorganism number and bacterial community diversity in the hc‐PH environment were lower than those in the lc‐PH environment. Sequencing results of the bacterial community showed that the dominant bacterial community of AS was stable and composed by the genera Pseudomonas, Acinetobacter and Burkholderia‐Paraburkholderia in the hc‐PH condition. Moreover, aimed to enhance the tolerance to hc‐PH stress, the relative abundances of microbial community functions of environmental adaptation, membrane transport, replication and repair were increased. However, the digestive system, circulatory system and endocrine system of the microbial community were significantly disturbed by hc‐PH, which eventually caused the degradation rate of PH by AS to decrease significantly. CONCLUSION Thus the decrease of microbial community diversity and tolerance ability can be regarded as the main limiting factors to enhance the degradation rate of hc‐PH by microorganisms. © 2019 Society of Chemical Industry

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“…Biostimulacija podrazumijeva bioremedijaciju postignutu stimuliranjem rasta i metabolizma autohtonih mikrobnih zajednica dodavanjem tvari koje potpomažu rast povećanjem dostupnosti kisika, kontroliranjem fizikalnih parametara ili kombiniranjem navedenih postupaka. 14,15 U slučaju kada autohtoni mikroorganizmi ne mogu ukloniti određenu tvar iz okoliša ili kada je populacija mikroorganizama koji mogu razgraditi onečišćujuću tvar nedovoljno velika, upotrebljavaju se neautohtoni mikroorganizmi. Proces bioremedijacije koji se ostvaruje dodavanjem jedne ili više neautohtnone mikrobne vrste naziva se bioaugmentacija.…”

Section: Bioremedijacijaunclassified

Povećanje učinkovitosti bioremedijacije na razini gena

Česnik

Blažević²,

Domanovac³

2019

Kem. ind. (Online)

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Bioremedijacija se koristi potencijalom mikroorganizama pri uklanjanju onečišćenja iz okoliša. Metabolički putovi kojima se onečišćujuća tvar razgrađuje u manje toksične tvari vrlo su kompleksni. Naprednim tehnikama molekularne biologije mehanizmi bioremedijacije izučavaju se na razini gena. Gen zaslužan za proizvodnju proteina koji razgrađuje onečišćujuću tvar može se izolirati i unijeti u drugi organizam, čime nastaje organizam s poboljšanim bioremedijacijskim svojstvima. Brojna se svjetska istraživanja temelje na genetičkom inženjerstvu na mikroorganizmima, no najveću prepreku upotrebe takvih organizama u bioremedijaciji čine zakonski okviri te nedovoljno poznavanje posljedica njihova oslobađanja u okoliš.

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Biostimulation and bioaugmentation of native microbial community accelerated bioremediation of oil refinery sludge

Cited by 244 publications

References 50 publications

Impacts of Heavy Metals on Soil Microbial Activity

Impacts of Heavy Metals on Soil Microbial Activity

Microbial community dynamics and functional responses that contribute to tolerance of high concentrations of petroleum hydrocarbon

Povećanje učinkovitosti bioremedijacije na razini gena

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