Removal of direct blue-86 from aqueous solution by new activated carbon developed from orange peel

Pectin-cerium (IV) tungstate composite (Pc/ CT) has been prepared by sol gel method at room temperature. The composite ion exchanger has been characterized using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy and Fourier infrared spectroscopy. The ion exchange capacity, pH titrations, thermal stability and distribution coefficient of composite ion exchanger were investigated. The Na ? ions exchange capacity of the Pc/CT has been observed higher (1.4 meq g -1 ) as compared to its inorganic counterpart (0.8 meq g -1 ). Pc/CT composite ion exchanger was thermally stable and retained about 60 % of its ion exchange capacity up to 400°C. The distribution study has inferred more selective the Pc/CT for Zn 2? as compared to other metal ions. The adsorption efficiency of Pc/CT was tested for methylene blue removal dye from aqueous phase. The removal of dye followed pseudo-second-order kinetics.

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“…The Freundlich equation for heterogeneous surface energy systems is represented by Eq. (5) (Foo and Hameed 2012;Nemr et al 2009).…”

Section: Adsorption Isothermmentioning

confidence: 99%

Pectin–cerium (IV) tungstate nanocomposite and its adsorptional activity for removal of methylene blue dye

Gupta

Pathania

Singh

2013

Int. J. Environ. Sci. Technol.

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“…Such deprotonated variety undergo electrostatic attraction for Cd 2+ that result in the formation of metal-ligand magnetic composite complexes which caused enhanced adsorption. The elimination of textile dyes (Direct Red 23 (DR23) and Direct Red 80 (DR80)) from aqueous solutions by orange husk was examined [41].…”

Section: Bio-waste Materials As Adsorbent Of Contaminate From Waste Wmentioning

confidence: 99%

Applications of Bio-waste Materials as Green Synthesis of Nanoparticles and Water Purification

Ali¹

2017

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Towards the future of green, sustainable and renewable products the suggestion of using the agriculture biomass in the coming decades got increased. Biomass material is one of the important sources of alternative material for the production of biocomposite products. An increasing global awareness about environmental issues is acting as the driving force behind the utilization of biomass material as valuable products. Bio-waste materials (agricultural waste) have been recognized as an ecological burden for the society they stimulated new gateways for the production of renewable, low cost and sustainable adsorbents for water treatment applications. In the area of water purification, nanotechnology offers the possibility of an efficient removal of pollutants and bacteria. Adsorption has proved that it is the best process of water treatment technologies, because of its significant advantages. Different modification methods of waste-based adsorbents, have also been presented to highlight and discuss the key advancements on the preparation of novel adsorbents using agricultural "agro-waste". Adsorption mechanisms responsible for pollutants removal by waste-based adsorbents have also been discussed. It also focuses on the computational aspects of binding of biomolecules to nanoparticles (NPs) and some of the applications of the biosynthesized NPs as water purification. The nature acts like a large ''bio-laboratory" comprising of plants, algae, fungi, yeast, etc. which are composed of biomolecules. These naturally occurring biomolecules have been identified to play an active role in the formation of nanoparticles with distinct shapes and sizes thereby acting as a driving force for the designing of greener, safe and environmentally benign protocols for the synthesis of NPs. The biosynthesis of NPs using waste materials will help researchers not only to design safer nanomaterials but also to promote the understanding of health and safety considerations of NPs. Useful materials can be produced easily even at reasonable scale because the biomaterial based routes eliminate the need to use toxic chemicals. The aim of this review is to summarize the adsorption capacities for organic and inorganic pollutants by different bio-waste-based adsorbents.

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“…The Freundlich isotherm model [29] is the earliest known equation describing the adsorption process. It is an empirical equation used for nonideal sorption that involves heterogeneous sorption.…”

Section: Adsorption Isotherm Simulationmentioning

confidence: 99%

Equilibrium and heat of adsorption of phosphine on CaCl₂‐modified molecular sieve

Tang

et al. 2009

Asia-Pacific J Chem Eng

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Adsorption characteristics of the virgin and CaCl 2 -immersed molecular sieves at 298 K were investigated to select the adsorbent with high adsorption capacity to phosphine. Adsorption isobars and adsorption isotherms over the phosphine partial pressure and temperature ranged 0 ∼ 1000 Pa and 298 ∼ 343 K were measured. The adsorption equilibrium data for phosphine at various temperatures were fitted to Langmuir and Freundlich isotherm models and their isosteric heats of adsorption were determined by the Clausius-Clapeyron equation. It was found the Freundlich was more suitable for description of phosphine adsorption process through calculating average absolute relative error, and the fitted result about Langmuir model showed the heterogeneous characteristics of modified adsorbent. The isosteric heat of adsorption was about 15 kJ/mol, which indicated adsorptive phosphine removal performance may be a dominant of physical adsorption being easy for desorption. The isosteric heat of adsorption decreased with an increase of the surface loading on CaCl 2 /5A, which means that CaCl 2 /5A molecular sieve had an energetically heterogeneous surface. The present study confirmed that the CaCl 2 /5A molecular sieves would be one of the candidates for separation and recycle of phosphine. 

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Removal of direct blue-86 from aqueous solution by new activated carbon developed from orange peel

Cited by 259 publications

References 34 publications

Pectin–cerium (IV) tungstate nanocomposite and its adsorptional activity for removal of methylene blue dye

Pectin–cerium (IV) tungstate nanocomposite and its adsorptional activity for removal of methylene blue dye

Applications of Bio-waste Materials as Green Synthesis of Nanoparticles and Water Purification

Equilibrium and heat of adsorption of phosphine on CaCl₂‐modified molecular sieve

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Removal of direct blue-86 from aqueous solution by new activated carbon developed from orange peel

Cited by 259 publications

References 34 publications

Pectin–cerium (IV) tungstate nanocomposite and its adsorptional activity for removal of methylene blue dye

Pectin–cerium (IV) tungstate nanocomposite and its adsorptional activity for removal of methylene blue dye

Applications of Bio-waste Materials as Green Synthesis of Nanoparticles and Water Purification

Equilibrium and heat of adsorption of phosphine on CaCl2‐modified molecular sieve

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Product

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Equilibrium and heat of adsorption of phosphine on CaCl₂‐modified molecular sieve