Comparative Study of Three Dyes’ Adsorption onto Activated Carbon from Chenopodium quinoa Willd and Quillaja saponaria

Abril, Diana; Ferrer, Víctor; Mirabal‐Gallardo, Yaneris; Cabrera‐Barjas, Gustavo; Segura, Cristina; Maricán, Adolfo; Pereira, Alfredo; Durán-Lara, Esteban F.; Valdés, Oscar

doi:10.3390/ma15144898

Cited by 7 publications

(3 citation statements)

References 87 publications

(108 reference statements)

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“…For the Langmuir model, the adsorption properties could be evaluated using the equilibrium parameter, R L [31]:…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Adsorption of Sunscreen Compounds from Wastewater Using Commercial Activated Carbon: Detailed Kinetic and Thermodynamic Analyses

Gheorghe,

Iancu,

Ionescu

et al. 2023

Water

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Sunscreen compounds are one of the most toxic substances detected in the aqueous environment. However, these molecules are continuously utilized in a various range of products to provide protection against UV radiation. The removal of three sunscreen compounds, 4-hydroxybenzophenone (4-HBP), 2,4-dihydroxybenzophenone (BP-1) and oxybenzone (BP-3), by commercial activated carbon (AC) was investigated using batch adsorption experiments. Different operational characteristics, such as adsorbent dosing, interaction time, solution pH and starting sunscreen compound concentration, were studied. The adsorption capacity of the AC material was assessed using a liquid chromatograph associated with a mass spectrometer detector (LC–MS/MS). Two isotherm models were utilized to explained the target compound adsorption phenomenon (Langmuir and Freundlich), while pseudo-first and -second kinetic orders and thermodynamics were utilized to examine the adsorption mechanism. The maximum adsorption capacities determined from the Langmuir isotherms were established as 43.8 mg/g for 4-HBP, 48.8 mg/g for BP-3 and 41.1 mg/g for BP-1. The thermodynamic parameters revealed the following: a negative ΔG° (<20 KJ/mol) and ΔH° and a positive ΔS° of the targeted sunscreen compounds adsorbed onto AC suggest a spontaneous and exothermic adsorption process, favored by lower temperature, proving that the physical sorption mechanism prevailed. Effective adsorption of 4-HBP, BP-3 and BP-1 from real wastewater samples proved the viability of sunscreen compound removal using commercial AC material. This paper offers promising results on a sustainable, economical and environmentally friendly method for removal of ubiquitous sunscreen compounds from wastewater, as a possible enhancement of treatment processes.

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“…For the Langmuir model, the adsorption properties could be evaluated using the equilibrium parameter, R L [31]:…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Adsorption of Sunscreen Compounds from Wastewater Using Commercial Activated Carbon: Detailed Kinetic and Thermodynamic Analyses

Gheorghe,

Iancu,

Ionescu

et al. 2023

Water

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“…The Freundlich model's empirical equation for the adsorption process in heterogeneous systems may be represented in linear form as illustrated in Eq. ( 6) [40,41]:…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Removal of Textile Wastewater Pollutants Using Zeolite Mineral as Adsorbent: Isotherm Studies

Subhi

Al-Najar

Noori

2023

KEM

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Heavy metals and organic pollutants may represent long-term hazards to the ecosystem and human health, thus it is important to discover a safe and efficient way to remove pollutants from the environment. Widely varied techniques, such as adsorption for color removal from industrial wastewater, have therefore been developed. Due to its ease of use, its simplicity, ecofriendly and reduced cost as compared to other conventional methods, the adsorption process has been widely used for wastewater treatment. In this study, natural Clinoptilolite zeolite (NCZ) was employed as a high-capacity and low cost adsorbent. Using natural Clinoptilolite zeolite to adsorb dyes is essential for determining how wastewater treatment facilities remove the dye. A series of laboratory adsorption experiments were conducted for equilibrium reactions to study the effect of essential parameters for dye removal, including the amount of zeolite adsorbent 0.03 to 1 g, the methylene blue (MB) and eosin yellow (EY) dye concentration (50 to 200 ppm), the pH value 3 to 11, and the contact time 30 to 120 minutes. The selected range of operating factors was designed using the response surface method to establish a mathematical model that describes the adsorption process .Results showed that the optimum values of these factors to remove methylene blue dye were: 1 g of adsorbent dose, 50 mg/l of MB dye during 80 min at pH of 11 with removal efficiency reached to 99.9 %. ,and the optimum values of these factors to remove eosin yellow dye were: 0.03 g of adsorbent dose, 200mg/l of EY dye during 120 min at pH of 3 with removal efficiency reached to 98 %,also two models (Langmuir and Freundlich) isotherms were studied, Freundlich was best fitted model with a correlation of 0.9737, which suggesting a multilayer adsorption.

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“…Moreover, the degradation of these synthetic dyes can produce secondary toxic substances that further damage the environment. Consequently, the effective removal of these hazardous dyes from industrial wastewater is an urgent issue, leading to the protection of aquatic ecosystems and also carries economic benefits [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Utilizing Novel Lignocellulosic Material from Hart’s-Tongue Fern (Asplenium scolopendrium) Leaves for Crystal Violet Adsorption: Characterization, Application, and Optimization

Mosoarca,

Vancea,

Popa

et al. 2023

Polymers

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In this work, a new lignocellulosic adsorbent was obtained and tested for crystal violet dye removal from water. The material was obtained from hart’s-tongue fern (Asplenium scolopendrium) leaves after minimal processing, without chemical or thermal treatment. The surface of the material was characterized using a variety of techniques, including FTIR, SEM, and color analysis. The effect of various factors on the adsorption capacity was then investigated and discussed. The kinetic and equilibrium studies showed that the general-order kinetic model and the Sips isotherm are the most suitable to describe the adsorption process. The equilibrium time was reached after 20 min and the maximum calculated value of the adsorption capacity was 224.2 (mg g−1). The determined values for the thermodynamic parameters indicated physical adsorption as the main mechanism involved in the process. The Taguchi method was used to optimize the adsorption conditions and identify the most influential controllable factor, which was pH. ANOVA (general linear model) was used to calculate the percentage contribution of each controllable factor to dye removal efficiency. Analysis of all the results shows that hart’s-tongue fern (Asplenium scolopendrium) leaves are a very inexpensive, readily available, and effective adsorbent for removing crystal violet dye from aqueous solutions.

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Comparative Study of Three Dyes’ Adsorption onto Activated Carbon from Chenopodium quinoa Willd and Quillaja saponaria

Cited by 7 publications

References 87 publications

Adsorption of Sunscreen Compounds from Wastewater Using Commercial Activated Carbon: Detailed Kinetic and Thermodynamic Analyses

Adsorption of Sunscreen Compounds from Wastewater Using Commercial Activated Carbon: Detailed Kinetic and Thermodynamic Analyses

Removal of Textile Wastewater Pollutants Using Zeolite Mineral as Adsorbent: Isotherm Studies

Utilizing Novel Lignocellulosic Material from Hart’s-Tongue Fern (Asplenium scolopendrium) Leaves for Crystal Violet Adsorption: Characterization, Application, and Optimization

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