Oil recovery from tank bottom sludge using rhamnolipids

Liu, Chuhan; Zhang, Yin; Sun, Shanshan; Huang, Lixin; Yu, Li; Liu, Xiaonan; Lai, Ruiqiu; Luo, Yijing; Zhang, Zhiyong; Zhang, Zhongzhi

doi:10.1016/j.petrol.2018.06.031

Cited by 58 publications

(15 citation statements)

References 22 publications

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“…Rhamnolipids contain a hydrophilic group made up of one or two molecules of rhamnose and a hydrophobic group consisted of one or two molecules of β-hydroxyalkanoic acids (Rha–Rha–C m –C n or Rha–C m –C n , m and n: 8, 10, 12, or 14) [ 22 – 25 ]. As a class of glycolipid-type biosurfactants primarily produced by Pseudomonas aeruginosa [ 26 – 29 ], rhamnolipids have a huge market demand and momentum with enormous application potential in agriculture production [ 30 , 31 ], environmental protection [ 32 , 33 ], pharmaceutical industry [ 34 – 36 ], food processing [ 37 , 38 ], oil exploitation [ 39 – 42 ], detergent industry [ 43 ] and cosmetic industry [ 44 ] (Fig. 1 ).…”

Section: Introductionmentioning

confidence: 99%

Foaming of rhamnolipids fermentation: impact factors and fermentation strategies

et al. 2021

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Rhamnolipids have recently attracted considerable attentions because of their excellent biosurfactant performance and potential applications in agriculture, environment, biomedicine, etc., but severe foaming causes the high cost of production, restraining their commercial production and applications. To reduce or eliminate the foaming, numerous explorations have been focused on foaming factors and fermentation strategies, but a systematic summary and discussion are still lacking. Additionally, although these studies have not broken through the bottleneck of foaming, they are conducive to understanding the foaming mechanism and developing more effective rhamnolipids production strategies. Therefore, this review focuses on the effects of fermentation components and control conditions on foaming behavior and fermentation strategies responded to the severe foaming in rhamnolipids fermentation and systematically summarizes 6 impact factors and 9 fermentation strategies. Furthermore, the potentialities of 9 fermentation strategies for large-scale production are discussed and some further strategies are suggested. We hope this review can further facilitate the understanding of foaming factors and fermentation strategies as well as conducive to developing the more effective large-scale production strategies to accelerate the commercial production process of rhamnolipids.

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Section: Introductionmentioning

confidence: 99%

Foaming of rhamnolipids fermentation: impact factors and fermentation strategies

et al. 2021

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“…It can also adapt to harsh environments, such as high salt, strong acid, and strong alkali (Das and Kumar, 2018; Geetha et al, 2018; Zdziennicka and Jańczuk, 2018). RL has many applications, such as in pesticides (Nalini and Parthasarathi, 2018), oil recovery (Liu et al, 2018a; Sahebnazar et al, 2018), and organics degradation (Ma et al, 2018; Liu et al, 2018b). Furthermore, RL can bond and chelate with metals such as lead, cadmium, and mercury to mitigate heavy metal pollution (Tang et al, 2018; Wan et al, 2018; Xue et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

The Corrosion Inhibition Performance and Mechanism of Rhamnolipid for X65 Steel in CO₂‐Saturated Oilfield‐Produced Water

Zhang

Wang

Liu

et al. 2021

J Surfact & Detergents

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The corrosion inhibition effect and mechanism of rhamnolipid (RL) were studied for X65 steel in oilfield‐produced water saturated with CO2 using the weight loss method, electrochemical measurements, surface analysis, surface‐enhanced Raman spectroscopy (SERS), and quantum chemical calculations. The results prove that RL is an excellent inhibitor against CO2 corrosion and predominantly inhibits the anodic corrosion reaction of X65 steel. The inhibition performance of RL is connected with surface activity and molecular structure. RL adsorbs on the metal surface by the reactivity centers to form a protective film, and the film has good inhibition ability for X65 steel for up to 168 h.

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“…It has been established that the oil sludge treatment should follow the reduction, reuse, and recycle (3R) policies mentioned in the present waste management procedures (Sakai et al 2011 ; European Parliament 2008 ). Therefore, oil sludge washing (OSW) with surfactants has been used to recover the oil (Liang et al 2017 ; Duan et al 2018 ; Liu et al 2018a ; Chen et al 2019 ) and sometimes co-solvents are added to help with the oil extraction process (Zheng et al 2012 ). Hu et al ( 2020 ) mentioned that there has been recently increasing oil recovery-related research to extract valuable energy and to reduce potentially harmful petroleum hydrocarbons and volume of oil sludge to dispose of.…”

Section: Introductionmentioning

confidence: 99%

Oil sludge washing with surfactants and co-solvents: oil recovery from different types of oil sludges

Ramírez

Shaw

Collins

2020

Environ Sci Pollut Res

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Different physicochemical and biological treatments have been used to treat oil sludges, and oil recovery techniques are preferred such as oil sludge washing (OSW) with surfactants and co-solvents. Toluene is commonly used as co-solvent, but it is non-benign to the environment. This study tested alternative co-solvents (n-pentane, n-hexane, cyclohexane, and isooctane) at 1:1 and 2:1 C/OS (co-solvent to oil sludge ratio). Also, this study evaluated the effect on the oil recovery rate (ORR) of three main parameters in the washing: type, concentration, and application ratio (S/OS) of surfactants to oil sludges. To date, no study has assessed these parameters in the washing of oil sludges from different sources. Four types of oil sludges and five surfactants (Triton X-100 and X-114, Tween 80, sodium dodecyl sulphate (SDS), and rhamnolipid) were used. The results showed that cyclohexane had high ORR and could be used instead of toluene because it is more benign to the environment. The S/OS ratio had a high effect on the ORR and depended on the type of oil sludge. Rhamnolipid, Triton X-100, and Triton X-114 had the highest oil recovery rates (40 – 70%). In addition, it was found that the surfactant concentration had no effect on the ORR. Consequently, the addition of surfactant was not significantly different compared to the washing with no surfactants, except for one sludge. The use of the surfactant in the washing solution can help in the selective extraction of specific oil hydrocarbon fractions in the recovered oil to assess its potential reuse as fuel. Further recommendations were given to improve the OSW process.

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Oil recovery from tank bottom sludge using rhamnolipids

Cited by 58 publications

References 22 publications

Foaming of rhamnolipids fermentation: impact factors and fermentation strategies

Foaming of rhamnolipids fermentation: impact factors and fermentation strategies

The Corrosion Inhibition Performance and Mechanism of Rhamnolipid for X65 Steel in CO₂‐Saturated Oilfield‐Produced Water

Oil sludge washing with surfactants and co-solvents: oil recovery from different types of oil sludges

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Oil recovery from tank bottom sludge using rhamnolipids

Cited by 58 publications

References 22 publications

Foaming of rhamnolipids fermentation: impact factors and fermentation strategies

Foaming of rhamnolipids fermentation: impact factors and fermentation strategies

The Corrosion Inhibition Performance and Mechanism of Rhamnolipid for X65 Steel in CO2‐Saturated Oilfield‐Produced Water

Oil sludge washing with surfactants and co-solvents: oil recovery from different types of oil sludges

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The Corrosion Inhibition Performance and Mechanism of Rhamnolipid for X65 Steel in CO₂‐Saturated Oilfield‐Produced Water