Rhamnolipid from Pseudomonas aeruginosa can improve the removal of Direct Orange 2GL in textile dye industry effluents

Silva, Vinícius Luiz da; Dilarri, Guilherme; Mendes, Carolina Rosai; Lovaglio, Roberta Barros; Gonçalves, Adilson R.; Montagnolli, Renato Nallin; Contiero, Jonas

doi:10.1016/j.molliq.2020.114753

Cited by 16 publications

(10 citation statements)

References 37 publications

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“…With the extension of fermentation time, the surface tension of fermentation broth decreased significantly within the first 12 hours from 62.5 to 29.1 mN/m, and then leveled out reaching 26.5 mN/m in 24 hours. After the surfactant in the fermentation broth was further extracted, combined with thin-layer chromatography and infrared spectroscopy, it was found that the surfactant metabolized by the strain was rhamnolipid, which was consistent with other recent findings (da Silva et al 2021;Ke et al 2021).…”

Section: Emulsification Of Crude Oilsupporting

confidence: 91%

“…Previous studies, including that conducted in our laboratories, have demonstrated its capability for degrading crude oil with petroleum hydrocarbon as carbon source while producing biosurfactant rhamnolipids through metabolism (Duan et al 2020;Shi et al 2021;da Silva et al 2021;Ke et al 2018;Ke et al 2021). As a result, it has found wide applications in, e.g., agriculture and petroleum industry, for treating oily wastewater and for enhanced oil recovery (Zhao et al 2021;Varjani et al 2020;Sharma et al 2018;Ke et al 2018;Ke et al 2021).…”

Section: Introductionmentioning

confidence: 97%

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A salt-tolerant petroleum-degrading strain Pseudomonas aeruginosa SD and its remediation potential for oily sludge

Sun

Zhou²,

Zhang³

et al. 2023

Preprint

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Oily sludge as highly hazardous solid waste poses a significant threat to human beings and the environment, urging the development of efficient and cost-effective treatment technologies while the bioremediation approach through microbial degradation holds great potential. In this study, a salt-tolerant and highly efficient petroleum hydrocarbon degrading strain SD was isolated from oily sludge and identified as Pseudomonas aeruginosa by 16S rRNA gene sequencing. The growth conditions and crude oil degradation performance of strain SD were characterized; the optimum growth temperature range was 30-35 oC and the salinity tolerance was up to 8%. The strain was able to rapidly grow and reproduce with petroleum hydrocarbon as the sole carbon source, and to metabolize biosurfactant rhamnolipid, prompting emulsification and dispersion of crude oil, and further oil degradation. For the crude oil with an initial dosage of 2%, the degradation rate of petroleum hydrocarbons reached 93.5% within 60 days, indicating a high degradation efficiency. Through the bioremediation experiment of oily sludge, it was found that for oily sludge with oil content of 4.25%, the degradation rate of petroleum hydrocarbons reached 92.01% within 40 days. The results demonstrated great potential for Pseudomonas aeruginosa SD towards industrial application in bioremediation of oily sludge.

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Section: Emulsification Of Crude Oilsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 97%

A salt-tolerant petroleum-degrading strain Pseudomonas aeruginosa SD and its remediation potential for oily sludge

Sun

Zhou²,

Zhang³

et al. 2023

Preprint

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“…As discussed previously, rhamnolipids are anionic surfactants that can reduce the surface tension of a solution [33]. Furthermore, they can be used as foaming agent and as adsorbent for foam separation because of the availability of binding sites for the adsorption of Cu ions in their structure [34].…”

Section: Effect Of the Rhamnolipid Concentrationmentioning

confidence: 99%

Removal of Cu Ions in Wastewater through a Combined Foam Separation‐Cell Adsorption Approach

Hou

Meng

et al. 2022

Chem Eng & Technol

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The removal of heavy metal pollutants from industrial wastewater is important to ensure the safety of the environment and humans. In this study, rhamnolipids from Pseudomonas aeruginosa were used to treat synthetic wastewater containing Cu ions (100 mg L -1 ) by foam separation. A high removal efficiency of 99.52 % was achieved when the somatic cells of inactivated P. aeruginosa were used as biosorbents. The analysis of the adsorption kinetics showed that dynamic biosorption followed the Langmuir isotherm model and that the bacterial cells had a strong adsorption effect on Cu ions. The novel technology based on the combination of foam separation and biosorption serves as an effective approach for the removal of Cu ions from industrial wastewater.

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“…Rhamnolipids (RL), anionic glycolipid biosurfactants, are provided by various bacteria. These materials are a potentially good alternative to synthetic chemical surfactants for pharmaceuticals and cosmetics owing to their advantages, including low toxicity and being environmentally friendly 49 . Rhamnolipids contain 3-(3-hydroxyalkanoyloxy)alkanoate, with hydrophobic acyl chains attached to a hydrophilic moiety which is created by one or two rhamnose molecules 50 , 51 .…”

Section: Introductionmentioning

confidence: 99%

“…Rhamnolipids contain 3-(3-hydroxyalkanoyloxy)alkanoate, with hydrophobic acyl chains attached to a hydrophilic moiety which is created by one or two rhamnose molecules 50 , 51 . Textile dyes, for instance, can benefit from an expanded assessment of biosurfactants' application, especially rhamnolipid-based ones 49 .…”

Section: Introductionmentioning

confidence: 99%

Adsorption behavior of rhamnolipid modified magnetic Co/Al layered double hydroxide for the removal of cationic and anionic dyes

Kheradmand

Negarestani

Kazemi

et al. 2022

Sci Rep

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In the present research, magnetic rhamnolipid-Co/Al layered double hydroxide (MR-LDH) was synthesized to uptake methylene blue (MB) and reactive orange 16 (RO16) from aqueous solution. The main parameters, including pH, adsorbent dosage, contact time, and initial analyte concentration, were optimized to achieve the best adsorption efficiency. Accordingly, the elimination of MB on MR-LDH is improved in the basic medium due to the electrostatic interactions between the negative charge of MR-LDH and the positive charge of MB dye. In contrast, the acidic medium (pH = 3) was favored for RO16 adsorption because of hydrogen bonding between the protonated form of azo dye and protonated hydroxyl groups at the surface of MR-LDH. The calculated maximum adsorption capacities for MB and RO16 were 54.01 and 53.04 mg/g at 313 K, respectively. The Langmuir model, which assumes monolayer adsorption on the adsorbent surface, provides the best explanation for the adsorption of both dyes (R2 = 0.9991 for MB and R2 = 0.9969 for RO16). Moreover, the pseudo-second-order kinetic model best described the adsorption process for MB (R2 = 0.9970) and RO16 (R2 = 0.9941). The proposed adsorbent maintains stable adsorption performance for four consecutive cycles. After each adsorption process, MR-LDH is easily separated by an external magnet. The findings show that MR-LDH was found to be an excellent adsorbent for the removal of both cationic and anionic organic dyes from aqueous solutions.

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Rhamnolipid from Pseudomonas aeruginosa can improve the removal of Direct Orange 2GL in textile dye industry effluents

Cited by 16 publications

References 37 publications

A salt-tolerant petroleum-degrading strain Pseudomonas aeruginosa SD and its remediation potential for oily sludge

A salt-tolerant petroleum-degrading strain Pseudomonas aeruginosa SD and its remediation potential for oily sludge

Removal of Cu Ions in Wastewater through a Combined Foam Separation‐Cell Adsorption Approach

Adsorption behavior of rhamnolipid modified magnetic Co/Al layered double hydroxide for the removal of cationic and anionic dyes

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