Functionalized MgAl-layered hydroxide intercalated date-palm biochar for Enhanced Uptake of Cationic dye: Kinetics, isotherm and thermodynamic studies

Zubair, Mukarram; Manzar, Mohammad Saood; Mu’azu, Nuhu Dalhat; Anıl, Ismail; Blaisi, Nawaf I.; Al‐Harthi, Mamdouh A.

doi:10.1016/j.clay.2020.105587

Cited by 73 publications

(30 citation statements)

References 44 publications

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“…This could be ascribed to the excellent formation and efficient dispersion of MgFe nanoparticles within the AC matrix without comprising the crystallographic structure. In contrast, the poor crystalline structure of the SBAC 500 MgFe composite is associated with the disorder and lattice defects of the MgFe crystalline structure due to the high loading of SBAC, which agglomerates or is stacked into LDH segments [ 18 , 34 ].…”

Section: Resultsmentioning

confidence: 99%

“…Similarly, Ivanets et al [ 17 ] reported that thermally treated (800 °C) dolomite could effectively bind 0.75 to 3.0 mmol/g of phosphorus. Interestingly, the deposition of LDH on the biochar matrix was revealed as a favorable method to substantially improve the resultant material properties, showing remarkable removal performance for water contaminants due to the synergistic effect of biochar and LDH [ 18 ]. Tran et al [ 14 ] inspected modified Mg-Al/LDHs derived from tobacco stalk and reported a better phosphate adsorption capability relative to other biochars, with an adsorption capability of 41 mg/g.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic Mg-Fe/LDH Intercalated Activated Carbon Composites for Nitrate and Phosphate Removal from Wastewater: Insight into Behavior and Mechanisms

et al. 2020

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This experimental work focused on the synthesis, characterization, and testing of a unique, magnetically separable, and eco-friendly adsorbent composite material for the advanced treatment and efficient removal of nitrate and phosphate pollutants from wastewater. The MgAl-augmented double-layered hydroxide (Mg-Fe/LDH) intercalated with sludge-based activated carbon (SBAC-MgFe) composites were characterized by FT-IR, XRD, BET, VSM, SEM, and TEM techniques, revealing homogeneous and efficient dispersion of MgFe/LDH within the activated carbon (AC) matrix, a highly mesoporous structure, and superparamagnetic characteristics. The initial solution pH, adsorbent dose, contact time, and temperature parameters were optimized in order to reach the best removal performance for both pollutants. The maximum adsorption capacities of phosphate and nitrate were found to be 110 and 54.5 mg/g, respectively. The competition between phosphate and coexisting ions (Cl−, CO32−, and SO42−) was studied and found to be remarkably lower in comparison with the nitrate adsorption. The adsorption mechanisms were elucidated by kinetic, isotherm, thermodynamic modeling, and post-adsorption characterizations of the composite. Modeling and mechanistic studies demonstrated that physisorption processes such as electrostatic attraction and ion exchange mainly governed the nitrate and phosphate adsorption. The composite indicated an outstanding regeneration performance even after five sequences of adsorption/desorption cycles. The fabricated composite with magnetically separable characteristics can be used as a promising adsorbent for the removal of phosphate and nitrate pollutants from wastewater.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetic Mg-Fe/LDH Intercalated Activated Carbon Composites for Nitrate and Phosphate Removal from Wastewater: Insight into Behavior and Mechanisms

et al. 2020

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“…Methylene blue Langmuir, Freundlich [124] Rice husk biochar Congo red Langmuir, Freundlich [125] Cow dung biochar Congo red Langmuir, Freundlich [125] Magnetic chicken bone biochar Rhodamine B Freundlich [126] Chitin derived biochar Methyl violet Freundlich, Langmuir, Liu [98] Switchgrass biochar Methylene blue Langmuir, Freundlich [90] Switchgrass biochar Orange G Langmuir, Freundlich [90] Switchgrass biochar Congo red Langmuir, Freundlich [90] Banana peel extract and FeSO 4 Methylene blue Langmuir, Freundlich, Dubinin-Radushkevich [127] Chemically modified lychee seed biochar Methylene blue Langmuir, Freundlich, Temkin, Dubinin-Radushkevich [117] Bamboo shoot shell biochar Rhodamine B Langmuir, Freundlich [128] Cetyl trimethyl ammonium bromide modified magnetic biochar from pine nut shells Acid chrome blue K Langmuir, Freundlich [112] Bovine bone biochar Basic Red 9 Langmuir, Freundlich [110] Fish scale biochar Basic Red 9 Langmuir, Freundlich [110]…”

Section: Adsorbate Applicable Isotherm Models Referencementioning

confidence: 99%

Biochar as an Eco-Friendly and Economical Adsorbent for the Removal of Colorants (Dyes) from Aqueous Environment: A Review

Srivatsav¹,

Bhargav²,

Shanmugasundaram³

et al. 2020

Water

180

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Dyes (colorants) are used in many industrial applications, and effluents of several industries contain toxic dyes. Dyes exhibit toxicity to humans, aquatic organisms, and the environment. Therefore, dyes containing wastewater must be properly treated before discharging to the surrounding water bodies. Among several water treatment technologies, adsorption is the most preferred technique to sequester dyes from water bodies. Many studies have reported the removal of dyes from wastewater using biochar produced from different biomass, e.g., algae and plant biomass, forest, and domestic residues, animal waste, sewage sludge, etc. The aim of this review is to provide an overview of the application of biochar as an eco-friendly and economical adsorbent to remove toxic colorants (dyes) from the aqueous environment. This review highlights the routes of biochar production, such as hydrothermal carbonization, pyrolysis, and hydrothermal liquefaction. Biochar as an adsorbent possesses numerous advantages, such as being eco-friendly, low-cost, and easy to use; various precursors are available in abundance to be converted into biochar, it also has recyclability potential and higher adsorption capacity than other conventional adsorbents. From the literature review, it is clear that biochar is a vital candidate for removal of dyes from wastewater with adsorption capacity of above 80%.

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“…Los resultados reportados en la literatura indican que las reacciones llevadas a cabo con diferentes contaminantes y a distintas temperaturas se ven influenciadas por la temperatura del agua a tratar [28], [31].…”

Section: Efecto De La Temperatura De La Soluciónunclassified

“…La eficiencia de adsorción del biocarbón se verá reflejada directamente con la dosis de biocarbón utilizado, así como con otros parámetros tales como la concentración del contaminante y los tiempos de contacto (tiempo de retención hidráulico), así como los mencionados anteriormente. En el estudio realizado por [31], en el cual analizaron la remoción del colorante AM, las eficiencias de eliminación de todos los ensayos experimentales mejoraron a medida que aumentaron las dosis del adsorbente, siendo el modelo de adsorción de Langmuir el que más se aproximó a los datos experimentales obtenidos. Este incremento en la capacidad de adsorción a medida que aumentaba la dosis del adsorbente puede atribuirse al aumento del número de sitios de adsorción activos.…”

Section: Efecto De La Dosis Del Biocarbón Usadounclassified

Uso del biocarbón como material alternativo para el tratamiento de aguas residuales contaminadas

Présiga-López¹,

Rubio-Clemente²,

Pérez³

2020

Rev. UIS ing.

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El biocarbón es el producto procedente de la descomposición de biomasa, cuyas características fisicoquímicas están asociadas al origen de ésta y al método de combustión utilizado. Entre estas propiedades, destacan el área superficial, la formación de macro y microporos, y la presencia de grupos funcionales. Debido a estas características, el biocarbón se convierte en un material alternativo con alta capacidad de adsorción de compuestos tóxicos presentes en las aguas residuales contaminadas. Este trabajo brinda información sobre los mecanismos de generación del biocarbón y cómo éstos interfieren en sus características fisicoquímicas. Asimismo, se describen los parámetros que intervienen en los procesos de remoción de contaminantes y se mencionan los tratamientos bajo los cuales el biocarbón se puede ver sometido para mejorar su capacidad de adsorción. Finalmente, se indican los posibles usos o la adecuada disposición final que debe tener el biocarbón en aras de contribuir a la estrategia de economía circular.

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Functionalized MgAl-layered hydroxide intercalated date-palm biochar for Enhanced Uptake of Cationic dye: Kinetics, isotherm and thermodynamic studies

Cited by 73 publications

References 44 publications

Magnetic Mg-Fe/LDH Intercalated Activated Carbon Composites for Nitrate and Phosphate Removal from Wastewater: Insight into Behavior and Mechanisms

Magnetic Mg-Fe/LDH Intercalated Activated Carbon Composites for Nitrate and Phosphate Removal from Wastewater: Insight into Behavior and Mechanisms

Biochar as an Eco-Friendly and Economical Adsorbent for the Removal of Colorants (Dyes) from Aqueous Environment: A Review

Uso del biocarbón como material alternativo para el tratamiento de aguas residuales contaminadas

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