Application of saponin biosurfactant and its recovery in the MEUF process for removal of methyl violet from wastewater

Samal, Kulbhushan; Das, C. K.; Mohanty, Kaustubha

doi:10.1016/j.jenvman.2017.07.073

Cited by 37 publications

(18 citation statements)

References 24 publications

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“…The negative value of Δ G 0 indicated that the adsorption of Cd +2 and CV onto the RHL vesicles was spontaneous and thermodynamically feasible. Similar values of Δ G 0 for adsorption of methylene blue and eosin yellow by saponin micelles were reported by previous authors . Also in our previous studies, the Δ G 0 for adsorption of Cd +2 by RHL vesicles was found to be −32.23 kJ/mol, based on Langmuir constant …”

Section: Resultssupporting

confidence: 90%

“…The log

K_{P}^{k}

values for solubilization of Cd +2 and CV by RHL vesicles were found to be 5.76 and 5.89, respectively. These results were corroborated with earlier studies where the logarithm of partition coefficient for solubilization of methylene blue and eosin yellow by saponin micelles were reported to be 5.7 and 5.69, respectively . The standard Gibbs free energy change (Δ G 0 ) was a measure of the driving force of transfer of a solute from an aqueous phase to surfactant vesicular phase, which was calculated with its partition coefficient between both phases as

\begin{matrix} lefttrue \\ {ΔG}^{0} = ‐ RT 1 n {K^{k}}_{normalP}, \end{matrix}

where R was the gas constant (kJ/mol K) and T was the temperature (K).…”

Section: Resultssupporting

confidence: 86%

“…Compared with synthetic surfactants, the low CMC of biosurfactant helps in reducing the inevitable leakage of surfactant monomers with the permeate and lowering the concentration polarization and membrane fouling leading to enhancement in process throughput. Very few MEUF studies with biosurfactants have been investigated for separation of organic and inorganic pollutants from aqueous streams . Our previous work has demonstrated the potential of RHL (rhamnolipid) in MEUF for separation of Cd(II) and p‐cresol from aqueous solution .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Use of rhamnolipid in micellar‐enhanced ultrafiltration for simultaneous removal of Cd⁺² and crystal violet from aqueous solution

Verma

Sarkar

2019

Asia-Pacific J Chem Eng

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The application of rhamnolipid (RHL) in micellar‐enhanced ultrafiltration (MEUF) was investigated to remove both cadmium ion (Cd+2) and crystal violet (CV) simultaneously from aqueous solution. The effects of the membrane pore size, feed conditions, and operating conditions on solute removal efficiency and permeate flux were studied. Response surface methodology (RSM) was used to obtain the optimal feed conditions. Eigenvalue analysis was performed to evaluate the nature of optimal condition. Critical micelle concentration and aggregate size of RHL in the presence of Cd+2 and CV were determined. Ultrafiltration data were used to estimate the partition coefficient, distribution coefficient and relative affinity of the pollutants, and loading capacity of RHL vesicles. Compared with chemical surfactants, the use of RHL in MEUF process with larger membrane pore size performed better in terms of process throughput. About (84 ± 1)% of initial RHL was recovered from retentate stream using acid precipitation technique, at the optimal recovery condition obtained through RSM. The experimental results obtained using optimal feed condition and RHL recovery condition matched well with the predicted results. Reclaimed RHL was successfully used two times in MEUF with rejection efficiency of 96.7% for Cd+2 and 97.8% for CV, thus, significantly lower the cost of the MEUF process.

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Section: Resultssupporting

confidence: 90%

“…The log

K_{P}^{k}

\begin{matrix} lefttrue \\ {ΔG}^{0} = ‐ RT 1 n {K^{k}}_{normalP}, \end{matrix}

where R was the gas constant (kJ/mol K) and T was the temperature (K).…”

Section: Resultssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Use of rhamnolipid in micellar‐enhanced ultrafiltration for simultaneous removal of Cd⁺² and crystal violet from aqueous solution

Verma

Sarkar

2019

Asia-Pacific J Chem Eng

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“…3.2.3. Soapnut (Sapindus mukorossi), known as Reetha, is generally distributed in tropical and sub-tropical regions of Asia [20,50,51]. The fruits of soapnut are a major source of saponins that have been traditional used as detergent and natural shampoo due to their foaming capability in water [5,20,52,53].…”

Section: Documented Plant Sources Of Saponinmentioning

confidence: 99%

Detergent Plants of Northern Thailand: Potential Sources of Natural Saponins

2019

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The natural forests of Northern Thailand are the mother source of many utilisable natural products because of their diverse flora and fauna. Northern Thai people have learned to utilise plants, in particular those of plants with cleansing properties, since the beginning of time. Several local species of detergent plants in Thailand are traditionally used by the locals and indigenous people. However, these plants may become extinct because their habitats have been replaced by industrial agriculture, and their uses have been replaced by chemically synthesised detergents. Researchers need to study and communicate the biology, phytochemistry, and the importance of these plants to conserve natural biodiversity of Northern Thailand. Of many utilisable detergent phytochemicals, natural saponins are known as bio-based surfactant and foaming agents. Their physiochemical and biological properties feature structural diversity, which leads to many industrial applications. In this review, we explained the term “detergent” from the physiological mechanism perspective and the detergent effects of saponins. We also compiled a list of Thai local plants with cleansing properties focusing on the saponin-containing plants. Future studies should investigate information relative to plant environment, ethnobotanical data, and the bioactive compound content of these plants. The knowledge acquired from this study will promote the maintenance of the local biodiversity and the conservation of the detergent plant species found in Thailand.

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“…Among membrane technologies, micellar enhanced ultrafiltration (MEUF) technology is a high-efficiency hot water treatment technology. MEUF technology presents low energy consumption, is easy and simple to implement, and is capable of effectively removing refractory organics in wastewater [11][12]. MEUF technology has broad application prospects.…”

Section: Introductionmentioning

confidence: 99%

Research on the Ultrafiltration and Removal of Aniline via the Compound of Sophorolipid and Rhamnolipid

Zhao

et al. 2018

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract:In this paper, a biological surfactant composed of sophorolipid and rhamnolipid is used as an enhanced ultrafiltration treatment for simulated aniline wastewater and the impact of the surfactant concentration, feed liquid aniline concentration, surfactant compound ratio, solution pH value and operating pressure on the aniline rejection rate and permeation flux is analyzed. The research results showed that the biological surfactant compound was able to remove aniline. The removal effect of aniline was considerable when the aniline concentration was 150 mg/L, the surfactant concentration was 0.8 mmol/L and the surfactant compound ratio was 0.1. The pH value had a significant impact on the aniline rejection rate. However, the operating pressure had little impact on the aniline rejection rate, although it exerted a considerable influence on the permeation flux.

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Application of saponin biosurfactant and its recovery in the MEUF process for removal of methyl violet from wastewater

Cited by 37 publications

References 24 publications

Use of rhamnolipid in micellar‐enhanced ultrafiltration for simultaneous removal of Cd⁺² and crystal violet from aqueous solution

Use of rhamnolipid in micellar‐enhanced ultrafiltration for simultaneous removal of Cd⁺² and crystal violet from aqueous solution

Detergent Plants of Northern Thailand: Potential Sources of Natural Saponins

Research on the Ultrafiltration and Removal of Aniline via the Compound of Sophorolipid and Rhamnolipid

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Application of saponin biosurfactant and its recovery in the MEUF process for removal of methyl violet from wastewater

Cited by 37 publications

References 24 publications

Use of rhamnolipid in micellar‐enhanced ultrafiltration for simultaneous removal of Cd+2 and crystal violet from aqueous solution

Use of rhamnolipid in micellar‐enhanced ultrafiltration for simultaneous removal of Cd+2 and crystal violet from aqueous solution

Detergent Plants of Northern Thailand: Potential Sources of Natural Saponins

Research on the Ultrafiltration and Removal of Aniline via the Compound of Sophorolipid and Rhamnolipid

Contact Info

Product

Resources

About

Use of rhamnolipid in micellar‐enhanced ultrafiltration for simultaneous removal of Cd⁺² and crystal violet from aqueous solution

Use of rhamnolipid in micellar‐enhanced ultrafiltration for simultaneous removal of Cd⁺² and crystal violet from aqueous solution