Kinetic and thermodynamic studies on biosorption of Cr(VI) on raw and chemically modified Datura stramonium fruit.

08:00 EDT 23rd March 2020 | BioPortfolio

Summary of "Kinetic and thermodynamic studies on biosorption of Cr(VI) on raw and chemically modified Datura stramonium fruit."

Biosorption of Cr(VI) on sulfuric and phosphoric acid-treated Datura stramonium fruit was investigated in batch mode. The various parameters that influence the biosorption process such as Cr(VI) initial concentration, biosorbent dosage, contact time, temperature, and pH value were optimized. Both linear and non-linear regression analysis of isotherm data suggest that Langmuir isotherm model mimics the behavior of Cr(VI) ion biosorption onto Datura stramonium fruit biosorbent. The maximum Cr(VI) ions adsorption capacity of 138.074 mg/g at pH 2 is achieved with phosphoric acid treated Datura stramonium (PDSF). The kinetics of adsorption process is well described by pseudo-second-order model with high R and low χ value. The estimated activation energy of < 8 kJ/mol obtained for both raw and chemically modified adsorbents suggests that the adsorption occurs mainly via physisorption. Besides, thermodynamic results reveal that biosorption of Cr(VI) on both treated and untreated Datura stramonium was endothermic, spontaneous, and randomness in nature.


Journal Details

This article was published in the following journal.

Name: Environmental monitoring and assessment
ISSN: 1573-2959
Pages: 248


DeepDyve research library

PubMed Articles [14939 Associated PubMed Articles listed on BioPortfolio]

Hexavalent chromium adsorption on virgin, biochar, and chemically modified carbons prepared from Phanera vahlii fruit biomass: equilibrium, kinetics, and thermodynamics approach.

A novel biosorbent Phanera vahlii fruit biomass (PVF) and its biochar and chemically modified forms were studied for the elimination of Cr(VI) from synthetic solutions. Biosorbents were characterized ...

Design and optimization of a new reactor based on biofilm-ceramic for industrial wastewater treatment.

A biofilm reactor was designed with flat ceramic substrates to remove Co(II), Ni(II) and Zn(II) from industrial wastewater. The ceramics were made of clay and nano-rubber with high mechanical resistan...

Biosorption of Rhodamine B onto novel biosorbents from Kappaphycus alvarezii, Gracilaria salicornia and Gracilaria edulis.

In the present investigation seaweeds of macroalgae like Kappaphycus alvarezii, Gracilaria salicornia and Gracilaria edulis used as novel biosorbent in native (KA, GS, GE) and ethanol modified (EKA, E...

Comparative assessment of raw and acid-activated preparations of novel Pongamia pinnata shells for adsorption of hexavalent chromium from simulated wastewater.

Current study deals with the comparative assessment for efficient adsorption of Cr(VI) from simulated wastewater using raw (NPP), phosphoric acid-activated (PPP) and sulphuric acid-activated (SPP) Pon...

Structural Changes of Biomass on Biosorption of Iron (II) from Aqueous Solutions: Isotherm and Kinetic Studies.

Various microbial biomasses have been employed as biosorbents. Bacterial biomass has added advantages because of easy in production at a low cost. The study investigated the biosorption of iron from a...

Clinical Trials [3045 Associated Clinical Trials listed on BioPortfolio]

Efficacy of a Chemically Activated Composite Resin Alkasite in Atypical Caries Lesions of Deciduous Teeth

Atypical cavities, which involve more than two surfaces being one of them vestibular or lingual/palatine, are a challenge for restorative dentistry, since the risk of failure of the restor...

Kinetic Anesthesia Device Study

Patients experience discomfort from lidocaine injections. Vibrating kinetic anesthesia devices have been shown to reduce pain of injections in dentistry, pediatrics, and dermatology, thoug...

Virtual Environment With Biofeedback to Promote Awareness of Relapse Risk Among Chemically Dependent Individuals

Anxiety is one of the major influences on relapse and substance abuse treatment dropout. Chemically dependent individuals need to be aware of their emotional state in situations that jeopa...

New MRT Imaging Biomarkers and Treatment With Kinetic Oscillatory Stimulation (KOS) in Nasal Cavity for Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS)

Placebo controlled trial study of efficacy of Kinetic Oscillation Stimulation (KOS) in nasal cavity will be conducted in patients with myalgic Encephalomyelitis/Chronic Fatigue Syndrome (M...

Study of Anti-HIV Cellular Therapy Based on Dendritic Cells Pulsed With Chemically Inactivated Virus

The aim of this study was to assess tolerability and safety of three different formulations of an anti-HIV immunotherapy based on autologous dendritic cells (DCs) pulsed with HIV chemicall...

Medical and Biotech [MESH] Definitions

A plant species of the genus DATURA, family SOLANACEAE, that contains TROPANES and other SOLANACEOUS ALKALOIDS.

A plant species and perennial herb of the genus DATURA, family SOLANACEAE, containing poisonous tropane ALKALOIDS.

A chemical reagent that reacts with and modifies chemically the tryptophan portion of protein molecules. Used for 'active site' enzyme studies and other protein studies. Sometimes referred to as Koshland's reagent.

Starches that have been chemically modified so that a percentage of OH groups are substituted with 2-hydroxyethyl ether groups.

Food derived from genetically modified organisms (ORGANISMS, GENETICALLY MODIFIED).

Quick Search

DeepDyve research library

Searches Linking to this Article