Studies on adsorption of p-nitrophenol on charred saw-dust

Dutta, Susmita; Basu, Jayanta Kumar; Ghar, R. N

doi:10.1016/s1383-5866(00)00205-7

Cited by 93 publications

(48 citation statements)

References 9 publications

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“…Due to the mentioned reasons, the presence of phenol in wastewater is a major problem for aquatic life and human health [2][3][4]. In order to remove phenolic compounds from wastewater streams, various treatment technologies such as adsorption [5,6], chemical oxidation [7,8], photodegradation [9,10] and coagulation flocculation [11] are being used. Adsorption technology is currently being applied extensively to the removal of organic and inorganic micro-pollutants from aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Functionalized magnetic MCM-48 nanoporous silica by cyanuric chloride for removal of chlorophenol and bromophenol from aqueous media

Anbia

Khoshbooei

2014

J Nanostruct Chem

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A novel adsorbent with magnetic Fe 3 O 4 nanoparticles and melamine-based dendrimer amine functionalized mesoporous silica (MDA-magMCM-48) has been developed which would not destroy the pore structure and could supply a convenient way for separation of the adsorbent from water. The obtained adsorbent was characterized by XRD, SEM, TEM, FTIR, TGA and N 2 adsorptiondesorption isotherm. The objective of this study was to evaluate the effectiveness of mesoporous MDA-magMCM-48 material for the sorption of 4-chlorophenol (4-CP) and 4-bromophenol (4-BP). The effects of various operating parameters such as initial concentration, pH of the solution and contact time were thoroughly studied. From the sorption studies it is observed that the uptake of 4-CP (239.55 mg/g) was higher than that of 4-BP (222.9 mg/g). The Freundlich and Langmuir adsorption isotherms are used to model the equilibrium adsorption data.

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Section: Introductionmentioning

confidence: 99%

Functionalized magnetic MCM-48 nanoporous silica by cyanuric chloride for removal of chlorophenol and bromophenol from aqueous media

Anbia

Khoshbooei

2014

J Nanostruct Chem

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“…The discoloration reached approximately 75%. Previous physicochemical pre-treatment tests showed high molecular weight retention polyphenols in sawdust (Dutta et al, 2001). In a biological system these fractions inhibited lignin peroxidase action and consequently deteriorated the growth of the microorganism.…”

Section: Omw Decolorization By P Chrysosporium Grown In Static Culturesmentioning

confidence: 93%

“…This contributes to OMW acidic pH neutralization and this contribution increases with sawdust concentration. Polyphenols are absorbed in the sawdust by dispersive interactions between the basic carbons and basics polyphenol aromatics in the sawdust (Dutta et al, 2001). …”

Section: Absorption On Sawdustmentioning

confidence: 99%

The biodegradation of Olive Oil Mill Wastewaters by Sawdust and by a <i>Phanerochaetae chrysosporium</i>

Mebirouk¹,

Sbai²,

López³

et al. 2007

Grasas y Aceites

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RESUMENLa biodegradación del alpechín por sawdust y por Phanerochaetae chrysosporium.Este trabajo describe la decoloración y la disminución de la demanda química de oxígeno del alpechín (OMW) por Phanerochaetae chrysosporium, crecido en cultivos estáti-cos, agitados e inmovilizados. Cuando P. chrysosporium fue cultivado en agitación, no se observa ninguna decoloración de OMW crudo, la decoloración ocurre solamente después de eliminar los polifenoles mediante adsorción en el serrín (Disminución del 39% del contenido en polifenoles). La utilización de la lignina peroxidasa generada en el medio da lugar a la mayor decoloración de alpechín y a las eficiencias de eliminación de DQO más altas. Las pruebas de la decoloración realizadas en las muestras de OMW que fueron pretratadas por la adsorción de madera del serrín, y usaron cultivos inmovilizadas demostraron resultados mejores. Por tanto, la eficiencia de eliminación de DQO alcanzó un 70%. La reducción de los polifenoles alcanzó los niveles más altos siempre, i.e. 62%. Se observó una decoloración significativa del efluente. PALABRAS-CLAVE: Alpechín -Biodegradación --Decoloración -Polifenoles -Serrín. SUMMARY The biodegradation of Olive Oil Mill Wastewaters by Sawdust and by a Phanerochaetae chrysosporium.This paper discusses decolorization and chemical oxygen demand (COD) abatement in olive mill wastewaters (OMW) by Phanerochaetae chrysosporium grown in static, stirred and immobilized cultures. When P. Chrysosporium is used in cultures, no decolorization of crude OMW is observed. Decolorization occurs only after the removal of polyphenols by adsorption in sawdust, which allows a 39% polyphenol removal. The use of a High lignin peroxides (Lip) producing medium, yields the highest OMW decolorization and COD removal efficiencies. The use of P. Chrysosporium immobilized on polyurethane foam leads to significant abatements of OMW polluting characteristics. And COD abatement reached 70%. The reduction of polyphenols reached its highest level at 62%. A significant effluent decolorization is apparent.

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“…(9b) derived from the mass balance of solution-adsorbent system as differential equation (9a) when t → 0, C t → C 0 , and C s , q t → 0 [18,19]. After acquisition of slope rate for the plot of C t versus t when t = 0, the external mass transfer coefficient k f can be determined.…”

Section: Batch Mass Transfer Studiesmentioning

confidence: 99%

Removal of cadmium from aqueous solutions by adsorption on granular red mud (GRM)

Zhu

Luan

Wang

et al. 2007

Separation and Purification Technology

141

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This study puts forward a novel method to prepare granular red mud (GRM) and evaluates its potential use to remove cadmium ions from aqueous solutions as a low-cost adsorbent. The properties of the novel adsorbent were examined and then used for cadmium adsorption experiments. Batch experiments were conducted and equilibrium isotherms at different temperatures (20• C) have been determined and analyzed with a Freundlich model. Kinetics data at initial pH 6.0 and 3.0 were fitted with Pseudo-second-order model and external mass transfer coefficients, effective particle diffusion coefficients were subsequently calculated for cadmium-GRM system at initial pH 6.0. Column breakthrough curves were depicted and the data were analyzed with a Thomas model. The column adsorption was reversal and the regeneration operation was accomplished by pumping 0.1 mol/L hydrochloric acid through the adsorbed column.

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Studies on adsorption of p-nitrophenol on charred saw-dust

Cited by 93 publications

References 9 publications

Functionalized magnetic MCM-48 nanoporous silica by cyanuric chloride for removal of chlorophenol and bromophenol from aqueous media

Functionalized magnetic MCM-48 nanoporous silica by cyanuric chloride for removal of chlorophenol and bromophenol from aqueous media

The biodegradation of Olive Oil Mill Wastewaters by Sawdust and by a <i>Phanerochaetae chrysosporium</i>

Removal of cadmium from aqueous solutions by adsorption on granular red mud (GRM)

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