Surfactant removal from aqueous solutions onto activated carbon using UV spectroscopy

Bindes, Marlon Menezes Maciel; Franco, Moilton Ribeiro

doi:10.1080/19443994.2014.963157

Cited by 15 publications

(6 citation statements)

References 27 publications

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“…In contrast, SLS can attach to charcoal through hydrophobic interactions. 28 Therefore, the dye displacement is facilitated. To investigate the system further, another dye acid blue 25 was utilized.…”

Section: Resultsmentioning

confidence: 99%

Quantification of the binding preference of selected dyes at a solid-liquid interface in organized media

Shah

Ali

Bibi

2020

JSCS

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The binding behavior of anionic dyes, acid yellow 17 and acid blue 25, at an activated carbon-liquid interface has been investigated in organized media based on aqueous sodium dodecyl sulfate using differential electronic spectroscopy. The quantification of interactions occurring in the system was realized using a simple physical model, emphasizing the displacement of bound dyes from the carbon surface. The quantities of displaced dyes were comparable; however, acid blue 25 was relatively easily desorbed compared to acid yellow 17. These differences can be attributed to differences in the dye size and hydrophobicity. The model is valid for the premicellar region of the surfactant. The results throw light on some characteristics of solid-liquid interfaces.

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Section: Resultsmentioning

confidence: 99%

Quantification of the binding preference of selected dyes at a solid-liquid interface in organized media

Shah

Ali

Bibi

2020

JSCS

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“…On the other hand, removal of surfactant through adsorption is a simple and versatile technique that does not require high skills for its operation and maintenance. Adsorbents like alumina (Adak, Bandyopadhyay, et al, ), waste activated carbon (Gupta, Pal, Ghosh, & Bandyopadhyay, ), waste tire rubber granules (Purakayastha, Pal, & Bandyopadhyay, ), activated carbon (Bindes & Franco, ), silica gel waste (Koner, Pal, & Adak, ), rice husk (Hosseinnia, Hashtroudi, Pazouki, & Banifatemi, ), coconut shell (Bhandari & Gogate, ), pine cone biomass (Sen et al, ) have been employed for removal of surfactants through adsorption in the past. A brief overview of the previous studies conducted for the removal of SDS through adsorption using different adsorbents and their respective adsorption capacities have been enlisted in Table .…”

Section: Introductionmentioning

confidence: 99%

Adsorptive removal of surfactant using dolochar: A kinetic and statistical modeling approach

Shami

Dash

Verma

et al. 2019

Water Environment Research

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Disturbingly high rates of consumption of surfactants in household and industries have led to mark them as emerging contaminants in the environment. In the present work, removal of sodium dodecyl sulfate (SDS), an anionic surfactant, using an industrial waste (dolochar) was explored. The adsorbent material was characterized with the help of Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). Kinetic evaluation was performed using first, pseudo-first, second, and pseudo-second order models. Adsorption of SDS over dolochar was expressed best by pseudo-second order kinetic model with regression coefficient (R 2 ) of .99. Three input parameters including adsorbent dose (20-10 g/L), initial concentration (30-100 mg/L) of the surfactant, and contact time (2-60 min) were chosen for optimization using response surface methodology based on Box-Behnken design (BBD) approach. A total of 15 experiments were run to examine the effect of these variables on removal of SDS by dolochar in a multivariate system. A regression analysis indicated the experimental data fitted well to a quadratic polynomial model with coefficient of regression (R 2 ) as .99. ANOVA and lack-of-fit test depicted the precision and efficiency of the model. The optimized conditions for SDS removal were found to be adsorbent dose 16.62 g/L, contact time 40 min, and initial concentration 47 mg/L with removal efficiency as 98.91%. © 2019 Water Environment Federation • Practitioner points• Daily ablutions and use of personal care products introduce a number of surfactants and recalcitrant compounds into the environment. • Adsorption is a handy and easy to operate treatment technique to remove graywater pollutants. • Kinetic and statistical modeling may be recommended as one of the most prominent tools to understand the removal mechanism. • Decentralized treatment of graywater using industrial wastes is recommended as sustainable solution in the developing nations.• Key words adsorption; Box-behnken design; dolochar; response surface methodology; surfactant

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“…), − dyes (e.g., methylene blue, methyl violet, and orange G), , and fluoride ions . For surfactants in aqueous solutions, most focus has been on the adsorption of sodium dodecyl sulfate (SDS), which can be seen as the nonaromatic analogue of SDBS. ,− For example, Hsieh et al used conductometric titration to study the SDS adsorption behavior on functionalized graphene sheets. These authors reported an adsorption surface area of 600 m 2 g –1 , which was linked to adsorption on the sp 2 hybridized regions only.…”

Section: Introductionmentioning

confidence: 99%

New Insights in the Treatment of Waste Water with Graphene: Dual-Site Adsorption by Sodium Dodecylbenzenesulfonate

Chavez-Sumarriva

Steenberge

D’hooge

2016

Ind. Eng. Chem. Res.

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For the adsorption of sodium dodecylbenzenesulfonate (SDBS) in aqueous solution on reduced graphene oxide (rGO), it is demonstrated that the dual-site mechanism is strongly favored over the conventional single-site one. The dual-site adsorption isotherm is derived, and regression analysis is successfully applied to experimental UV−vis data (1 g L −1 rGO; 298−318 K; 100−900 mg L −1 SDBS; pH: 4−11), considering reparametrization to minimize the correlation between the parameter estimates (dual site: ΔH°= −37.1 ± 1.3 kJ mol −1 ; ΔS°= 35.5 ± 4.1 J mol −1 K −1 ; q ∞ = 546.9 ± 8.6 mg SDBS g rGO −1). A temperature of 298 K is identified as the optimal operating temperature with contact times of ca. 30 h (700 mg L −1 SDBS). An improved regression analysis strategy, carefully selecting only low contact times (maximal 10 h), allowed assessment of the dual-site adsorption and desorption coefficient as (1.2 ± 0.3) × 10 −4 L mg SDBS −1 h −1 and (2.8 ± 0.7) × 10 −3 h −1 . Moreover, by the additional presence of sodium chloride (1.2 × 10 4 mg L −1 ), a much lower contact time of ca. 10 h can be selected to ensure an as good as complete SDBS removal, highlighting the potential of the SDBS/rGO system for wastewater treatment.

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Surfactant removal from aqueous solutions onto activated carbon using UV spectroscopy

Cited by 15 publications

References 27 publications

Quantification of the binding preference of selected dyes at a solid-liquid interface in organized media

Quantification of the binding preference of selected dyes at a solid-liquid interface in organized media

Adsorptive removal of surfactant using dolochar: A kinetic and statistical modeling approach

New Insights in the Treatment of Waste Water with Graphene: Dual-Site Adsorption by Sodium Dodecylbenzenesulfonate

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