Biosolids-derived biochar enhances the bioremediation of diesel-contaminated soil

Dike, Charles Chinyere; Khudur, Leadin S.; Hakeem, Ibrahim Gbolahan; Rani, Alka; Shahsavari, Esmaeil; Surapaneni, Aravind; Shah, Kalpit; Ball, Andrew S.

doi:10.1016/j.jece.2022.108633

Cited by 13 publications

(22 citation statements)

References 88 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Biochar can serve as a biostimulating agent and thus enhance hydrocarbon removal because of its ability to support soil microbial communities by providing habitat or improving soil [ 53 ]. Our results on the effectiveness of biochar in enhancing hydrocarbon removal agree with other reports in the literature [ 12 , 13 , 49 , 54 ].…”

Section: Resultssupporting

confidence: 92%

“…The hydrocarbon removal in the biochar treatment remained higher ( p < 0.05) than the control throughout the incubation, with 17% greater removal at week 22 ( Figure 2 ). The increased difference in hydrocarbon removal between both treatments in the early stages of remediation in the biochar treatment was consistent with our previous work involving biosolids biochar [ 13 ]. The fate of the components of crude oil in terms of degradation varies, with n-alkanes being easier to degrade compared to the branched alkanes [ 50 ].…”

Section: Resultssupporting

confidence: 91%

“…To assess the efficacy of adding biochar to hydrocarbon-contaminated soils (6.2% total petroleum hydrocarbon concentration), TPH concentration was monitored over 22 weeks across different treatments ( Figure 2 ). The results showed that the hydrocarbon concentration decreased in all the biochar treatments and the control at the end of incubation ( Figure 2 ), which is consistent with the literature [ 12 , 13 , 49 ]. At week 3, negligible removal occurred in the control treatment; however, a significant reduction of 11,993 mg/kg occurred in the biochar treatment.…”

Section: Resultssupporting

confidence: 91%

“…Biochar is a carbon-based product obtained from the thermochemical decomposition of biomass, including waste materials, in an oxygen-limited environment [ 11 ]. The application of biochar to contaminated soil has been shown to enhance hydrocarbon removal by up to 2.1 times [ 12 , 13 , 14 ]. For example, Aziz, Ali, Farooq, Jamal, Liu, He, Guo, Urynowicz and Huang [ 12 ] showed that adding sludge-derived biochar led to a minimum of 101% greater removal than the control treatment.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of the Application of Ochrobactrum sp.-Immobilised Biochar on the Remediation of Diesel-Contaminated Soil

Dike,

Rani Batra,

Khudur

et al. 2024

Toxics

Self Cite

View full text Add to dashboard Cite

The immobilisation of bacteria on biochar has shown potential for enhanced remediation of petroleum hydrocarbon-contaminated soil. However, there is a lack of knowledge regarding the effect of bacterial immobilisation on biosolids-derived biochar for the remediation of diesel-contaminated soil. This current study aimed to assess the impact of the immobilisation of an autochthonous hydrocarbonoclastic bacteria, Ochrobacterium sp. (BIB) on biosolids-derived biochar for the remediation of diesel-contaminated soil. Additionally, the effect of fertiliser application on the efficacy of the BIB treatment was investigated. Biochar (BC) application alone led to significantly higher hydrocarbon removal than the control treatment at all sampling times (4887–11,589 mg/kg higher). When Ochrobacterium sp. was immobilised on biochar (BIB), the hydrocarbon removal was greater than BC by 5533 mg/kg and 1607 mg/kg at weeks 10 and 22, respectively. However, when BIB was co-applied with fertiliser (BIBF), hydrocarbon removal was lower than BIB alone by 6987–11,767 mg/kg. Quantitative PCR (q-PCR) analysis revealed that the gene related to Ochrobacterium sp. was higher in BIB than in the BC treatment, which likely contributed to higher hydrocarbon removal in the BIB treatment. The results of the q-PCR analysis for the presence of alkB genes and FTIR analysis suggest that the degradation of alkane contributed to hydrocarbon removal. The findings of this study demonstrate that bacterial immobilisation on biosolids-derived biochar is a promising technique for the remediation of diesel-contaminated soil. Future studies should focus on optimising the immobilisation process for enhanced hydrocarbon removal.

show abstract

Section: Resultssupporting

confidence: 92%

Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of the Application of Ochrobactrum sp.-Immobilised Biochar on the Remediation of Diesel-Contaminated Soil

Dike,

Rani Batra,

Khudur

et al. 2024

Toxics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Biochar is a carbon-based product derived from the thermal decomposition of various organic biomass (including wastes) at high temperatures in an oxygen-limited environment [7]. Various studies have reported that biochar enhances the remediation of hydrocarbon-contaminated soil [8][9][10][11][12][13][14]. For example, Aziz et al [10] reported a 110% increase in the removal of hydrocarbons from soil amended with biochar compared to the control treatment.…”

Section: Introductionmentioning

confidence: 99%

Impact of Biosolids-Derived Biochar on the Remediation and Ecotoxicity of Diesel-Impacted Soil

Dike,

Krohn,

Khudur

et al. 2024

Soil Systems

Self Cite

View full text Add to dashboard Cite

This study aimed to investigate the impact of biosolids-derived biochar on the remediation of Australian soil contaminated with diesel while investigating the role of biochar in the remediation. To achieve the latter aim, sodium azide (NaN3) was added to a separate biochar treatment (BN) to alter the bacterial community structure. Biochar (B) reduced detectable hydrocarbons by 2353 mg/kg compared to the control (C) treatment at week 24. However, the BN treatment reduced the hydrocarbon concentration by 3827 and 6180 mg/kg, relative to B and C, respectively. Soil toxicity significantly decreased at week 24 compared to the start of the remediation in B, but not in the control. Biochar and control treatments generally showed a similar bacterial community structure throughout the incubation, while the bacterial community structure in BN differed significantly. Biodegradation was found to play a significant role in hydrocarbon removal, as the variation in the bacteria community coincided with differences in hydrocarbon removal between B and BN. The increased removal of hydrocarbons in the BN treatment relative to B coincided with increased and reduced relative abundances of Gordonia and JG30-KF-CM45 genera, respectively. This study showed that NaN3 led to a transient and selective inhibition of bacteria. This study makes an important contribution towards understanding the use of NaN3 in examining the role of biochar in the remediation of diesel-contaminated soil. Overall, we conclude that biochar has the potential to enhance the remediation of diesel-contaminated soil and that biodegradation is the dominant mechanism.

show abstract

Bioremediation, bioeconomy, circular economy, and circular bioeconomy—Strategies for sustainability

Prasad

2024

Bioremediation and Bioeconomy

View full text Add to dashboard Cite

Biosolids-derived biochar enhances the bioremediation of diesel-contaminated soil

Cited by 13 publications

References 88 publications

Effect of the Application of Ochrobactrum sp.-Immobilised Biochar on the Remediation of Diesel-Contaminated Soil

Effect of the Application of Ochrobactrum sp.-Immobilised Biochar on the Remediation of Diesel-Contaminated Soil

Impact of Biosolids-Derived Biochar on the Remediation and Ecotoxicity of Diesel-Impacted Soil

Bioremediation, bioeconomy, circular economy, and circular bioeconomy—Strategies for sustainability

Contact Info

Product

Resources

About