The oil removal and the characteristics of changes in the composition of bacteria based on the oily sludge bioelectrochemical system

Guo, Haiying; Tang, Shanfa; Wang, Penghua; Huang, Chunfeng; Geng, Xin; Jia, Xiaohan; Huang, Hongjun; Li, Xueping; Zhang, Jiqiang; Zhang, Zaiwang; Fang, Junfeng

doi:10.1038/s41598-020-72405-9

Cited by 18 publications

(12 citation statements)

References 30 publications

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“…Typically, an oily sludge is composed of 40−52% alkanes, 28− 31% aromatics, 15−32% asphaltenes, and colloids. 4 At present, the organic solvents used for the oil component extraction mainly include chloroform, dichloromethane, chloroform, acetone, n-hexane, and n-heptane. In particular, n-heptane has the extraction effect on all components.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…1,3 The ecological environment was seriously threatened by the presence of oily sludge, and oil resources were wasted. 4 The oil phase in oily sludge is mainly crude oil, which is mainly composed of hydrophobic petroleum hydrocarbons (PHCs) (e.g., saturated hydrocarbons, aromatic hydrocarbons, colloids, and asphaltenes). Asphaltenes and colloids have the greatest viscosity and the lowest liquidity.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Oily sludge is a sludge mixed with crude oil, all kinds of refined oil, residual oil, and other heavy oil. It is mainly produced in the exploitation, processing, and transportation of oil by oil spilling to the ground. , The annual production of oily sludge from the petroleum industry is up to billions of tons. , The ecological environment was seriously threatened by the presence of oily sludge, and oil resources were wasted . The oil phase in oily sludge is mainly crude oil, which is mainly composed of hydrophobic petroleum hydrocarbons (PHCs) (e.g., saturated hydrocarbons, aromatic hydrocarbons, colloids, and asphaltenes).…”

Section: Introductionmentioning

confidence: 99%

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Mechanism and Characteristics of Oil Recovery from Oily Sludge by Sodium Lignosulfonate Treatment

Yao

Liu

et al. 2021

ACS Omega

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The separation of oil components from oily sludge is an important component of soil remediation and energy recovery. Therefore, establishing a green and efficient separation technology is of great significance. In this study, oily sludge was separated using sodium lignosulfonate (SL) treatment. The effects of temperature, SL concentration, rotate speed, time, and pH on the oil removal rate were studied. The optimal conditions were as follows: temperature, 30 °C; SL concentration, 2.0 g·L–1; rotate speed, 200 rpm; time, 60 min; and pH 11. The maximum oil removal rate was 83.21%. The physicochemical properties of oily sludge were analyzed. The soil was looser, and the contact angle (55°) of the soil surface was reduced. Alkanes, aldehydes, ketones, carbonic acids, benzene rings, and alicyclic ethers were removed. The result shows that the SL treatment removed a wider range of petroleum hydrocarbon and had a stronger oil removal capacity. It provides a new method for the green and efficient separation of oily sludge.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanism and Characteristics of Oil Recovery from Oily Sludge by Sodium Lignosulfonate Treatment

Yao

Liu

et al. 2021

ACS Omega

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“…n-Alkanes can breakdown through demethylation, a process where a terminal methyl group is cleaved and replaced with a hydrogen atom. Demethylation of n-alkanes occurs naturally through microbial degradation and can affect the organic chemistry of oil and gas (Guo et al 2020). The loss of methyl groups results in artificially low CPI values that do not accurately represent the initial organic material composition.…”

Section: Discussionmentioning

confidence: 99%

Analyses of depositional environments of the Marcellus formation in New York using biomarker and trace metal proxies

Blocho

Smith

Noll

2021

J Petrol Explor Prod Technol

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The purpose of this study was to observe how the composition of organic matter (OM) and the extent of anoxia during deposition within the Marcellus Formation in New York varied by distance from the sediment source in eastern New York. Lipid biomarkers (n-alkanes and fatty acids) in the extractable organic component (bitumen) of the shale samples were analyzed, and proxies such as the average chain length (ACL), aquatic to terrestrial ratio (ATR) and carbon preference index (CPI) of n-alkanes were calculated. Fatty acids were relatively non-abundant due to the age of the shale bed, but n-alkane distributions revealed that the primary component of the OM was terrigenous plants. The presence of shorter n-alkane chain lengths in the samples indicated that there was also a minor component of phytoplankton and algal (marine) sourced OM. Whole rock analyses were also conducted, and cerium anomalies were calculated as a proxy for anoxia. All samples had a negative anomaly value, indicating anoxic conditions during deposition. Two samples, however, contained values close to zero and thus were determined to have suboxic conditions. Anoxia and total organic matter (TOM) did not show any spatial trends across the basin, which may be caused by varying depths within the basin during deposition. A correlation between nickel concentrations and TOM was observed and indicates that algae was the primary source of the marine OM, which supports the lipid biomarker analysis. It was determined that the kerogen type of the Marcellus Formation in New York State is type III, consistent with a methane-forming shale bed.

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“…Guo et al. showed that the oily sludge is suitable for SMFC operation, with a maximum output voltage of 299.13 mV. , However, a key issue that currently limits the practical application of SMFCs is the low power generation efficiency. There are many limiting factors influencing internal resistance. − The cathode, anode, pH, appropriate catalysts (activated carbon, cobalt-nitrogen framework), and external resistance are important limiting factors for the performance of the MFC. − Among the many factors that affect its electricity production, the anode is considered to be a key factor because it affects the microorganism growth and metabolism of full stop.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Anode Structure on the Performance of Oily Sludge Sediment Microbial Fuel Cells

Guo

Huang

et al. 2022

ACS Omega

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The anode is considered to be a key factor to improve the single-chamber bioelectrochemical system’s efficiency to degrade oily sludge in sediment while generating electricity. There are few studies on the effect of the anode structure on the performance of oily sludge MFCs systematically. In this paper, an oily sludge bioelectrical system was constructed using carbon felt and carbon plate as anode materials, adjusting the anode material arrangement as transverse and longitudinal, and using different anode materials from single to sextuple anodes. The results of this study showed that the rate of degradation of oily sludge was greater with carbon felt (17.04%) than with the carbon plate (13.11%), with transverse (23.61%) than with the longitudinal (19.82%) arrangement of anodes, and with sextuple anodes (33.72%) than with a single anode (25.26%) in the sediment microbial fuel cells (SMFCs). A similar trend was observed when the voltage, power density, and electromotive force (EMF) of SMFCs were estimated between the carbon felt and carbon plate, transverse and longitudinal arrangements, single and sextuple anodes. It is concluded that the proper adjustment of anode arrangements, using carbon felt as an anode material, and increasing the number of anodes to six may accelerate the rate of degradation of oily sludge in oily sludge sediment microbial fuel cells (SMFCs). Furthermore, the electricity generation performance was also improved.

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The oil removal and the characteristics of changes in the composition of bacteria based on the oily sludge bioelectrochemical system

Cited by 18 publications

References 30 publications

Mechanism and Characteristics of Oil Recovery from Oily Sludge by Sodium Lignosulfonate Treatment

Mechanism and Characteristics of Oil Recovery from Oily Sludge by Sodium Lignosulfonate Treatment

Analyses of depositional environments of the Marcellus formation in New York using biomarker and trace metal proxies

Effect of the Anode Structure on the Performance of Oily Sludge Sediment Microbial Fuel Cells

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