Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2022 May 13;25(6):104403.
doi: 10.1016/j.isci.2022.104403. eCollection 2022 Jun 17.

Performance evaluation of rhamnolipids addition for the biodegradation and bioutilization of petroleum pollutants during the composting of organic wastes with waste heavy oil

Jianfeng Bao  1 , Yuanfei Lv  1 , Chenchen Liu  1 , Shuangxi Li  1 , Zhihong Yin  1 , Yunjiang Yu  2 , Liandong Zhu  1
Affiliations

Performance evaluation of rhamnolipids addition for the biodegradation and bioutilization of petroleum pollutants during the composting of organic wastes with waste heavy oil

Jianfeng Bao et al. iScience. .

Abstract

Environmental pollution caused by petroleum hydrocarbons is being paid more and more attention worldwide. Surfactants are able to improve the solubility of petroleum hydrocarbons, but their effects on petroleum hydrocarbon degradation in composting systems are still unclear. In this study, the effects on microbial community succession were investigated by adding petroleum hydrocarbons and rhamnolipids during composting of organic wastes. The results showed that the compost and the addition of rhamnolipids could effectively reduce the petroleum hydrocarbon content with an efficiency of 73.52%, compared to 53.81% for the treatment without addition. Network analyses and Structural Equation Model suggested that there were multiple potential petroleum degraders microbes that might be regulated by nitrogen. The findings in this study can also provide an implication for the treatment of petroleum hydrocarbon pollutants from oil-polluted soil, and the technology can be potentially applied on an industrial scale in practice.

Keywords: Chemistry; Environmental chemistry; Surface chemistry.

PubMed Disclaimer

Conflict of interest statement

The authors declare no competing interests.

Figures

None
Graphical abstract
Figure 1
Figure 1
Changes of physicochemical parameters and petroleum hydrocarbon content and germination index during composting (A–D) (A) Temperature (B) Petroleum hydrocarbon content (C) Water content (D) Germination index. The error bar represents the standard deviation. Letters such as a, b and c indicate significant differences (different letters) or no significant differences (the same letters) between treatments.
Figure 2
Figure 2
Changes in the relative abundances of bacteria during the composting (A) Phylum level. (B) Genus level during the composting.
Figure 3
Figure 3
Network analysis of bacteria during the composting (A and B) (A) Network of microorganisms and environmental factors. (B) Network of microorganisms.
Figure 4
Figure 4
Redundancy analysis based on physicochemical parameters, microbial community, germination index, and petroleum hydrocarbon content.
Figure 5
Figure 5
Causal relationships among physicochemical parameters, petroleum hydrocarbon content, PDM and APDM of compost process based on the SEM.
See this image and copyright information in PMC

Similar articles

See all similar articles

Cited by

References

    1. Abed R.M., Al-Sabahi J., Al-Maqrashi F., Al-Habsi A., Al-Hinai M. Characterization of hydrocarbon-degrading bacteria isolated from oil-contaminated sediments in the Sultanate of Oman and evaluation of bioaugmentation and biostimulation approaches in microcosm experiments. Int. Biodeter. Biodegr. 2014;89:58–66. doi: 10.1016/j.ibiod.2014.01.006. - DOI
    1. Abed R.M.M., Al-Kharusi S., Al-Hinai M. Effect of biostimulation, temperature and salinity on respiration activities and bacterial community composition in an oil polluted desert soil. Int. Biodeter. Biodegr. 2015;98:43–52. doi: 10.1016/j.ibiod.2014.11.018. - DOI
    1. Agency I.E., Schrder A. 2019. IEA World Energy Outlook 2019 - Section on Material Efficiency.
    1. Bao J., Wang X., Gu J., Dai X., Zhang K., Wang Q., Ma J., Peng H. Effects of macroporous adsorption resin on antibiotic resistance genes and the bacterial community during composting. Bioresour. Technol. 2020;295:121997. - PubMed
    1. Bao Y., Dolfing J., Guo Z., Chen R., Wu M., Li Z., Lin X. Important ecophysiological roles of non-dominant Actinobacteria in plant residue decomposition, especially in less fertile soils. Microbiome. 2021;9:84. doi: 10.1186/s40168-021-01032-x. - DOI - PMC - PubMed

LinkOut - more resources