RESEARCH ARTICLE – Efficient Removal of Methyl Orange from Wastewater by Polymeric Chitosan-iso-vanillin

Author: Eman A. Alabbad

Journal: Open Chemistry Journal

 

Abstract

Introduction:

Water pollution is a serious issue in several countries. In addition, because of limited water resources, the recycling of wastewater is crucial. Consequently, new and effective sorbents are required to reduce the cost of wastewater treatment as well as to mitigate the health problems caused by water pollution.

Methods:

In this study, the removal of Methyl Orange (MO) dye from wastewater using a chitosan-iso-vanillin polymer was evaluated. The removal of MO from an aqueous solution was studied in a batch system, using the modified chitosan polymer.

Results:

The results indicate that the removal of MO by the modified chitosan was affected by the solution pH, sorbent dosage, initial MO concentration, contact time, and temperature. The experimental data were fitted to the Langmuir, Freundlich, and Temkin isotherms, and Freundlich isotherm showed the best fit. The kinetic data were fitted to the pseudo-first-order and pseudo-second-order rate equations. Thus, the removal of MO was controlled via chemisorption, and the removal rate was 97.9% after 3 h at an initial MO concentration of 100 ppm and a sorbent dose of 0.05 g. The adsorption behavior of the modified chitosan for the removal of MO was well-described using the pseudo-second-order kinetic model. Intraparticle diffusion analysis was also conducted, and the thermodynamic properties, including entropy (∆S), enthalpy (∆H), and free energy (∆G), were determined.

Conclusion:

The pH, initial MO concentration, sorbent dosage, adsorption temperature, and contact time had a significant effect on the adsorption of MO by chitosan-iso-vanillin.

Read the Full-Text of the article here:
https://benthamopen.com/ABSTRACT/CHEM-7-16

BECOME A REVIEWER – Open Chemistry Journal

Aims & Scope:

 

Open Chemistry Journal is an open access online journal which publishes review/mini-review articles, letters, short communications and guest edited thematic issues on novel research in the field of chemistry.

• Physical Chemistry
• Quantum Chemistry
• Thermochemistry
• Bioorganic Chemistry
• Inorganic Chemistry
• Electrochemistry
• Solid-State Chemistry
• Biochemistry
• Biophysical Chemistry
• Bioinorganic Chemistry
• Environmental Chemistry
• Spectroscopy
• Organic Chemistry
• Medicinal Chemistry
• Cluster Chemistry
• Green Chemistry
• Stereochemistry
• Neurochemistry Physical
• Materials Chemistry
• Theoretical Chemistry
• Immunochemistry
• Synthetic Chemistry
• Polymer Chemistry
• Analytical Chemistry
• Atmospheric Chemistry
• Mathematical Chemistry
• Organometallic Chemistry
• Immunohistochemistry

Open Chemistry Journal,a rapid peer reviewed journal, is an important and reliable source of current information on developments in the field. The emphasis will be on publishing quality articles rapidly and freely available worldwide.

 

Contact us at: madiha@benthamopen.net 

REVIEW ARTICLE – Role of Immunoinformatics in Accelerating Epitope-Based Vaccine Development against Dengue Virus

Author: Usman Sumo Friend Tambunan

Journal: The Open Biochemistry Journal

Abstract

Dengue Fever (DF) has emerged as a significant public health problem of international concern with its high prevalence in the tropic and subtropical regions. Dengue Virus (DENV), which is the cause of DF, consists of four serotypes of antigenically distinct viruses. The immense variation and limited identity similarity at the amino acid level lead to a problematic challenge in the development of an efficacious vaccine. Fortunately, the extensively available immunological data, the advance in antigenic peptide prediction, and the incorporation of molecular docking and dynamics simulation in immunoinformatics have directed the vaccine development towards the rational design of the epitope-based vaccine. Here, we point out the current state of dengue epidemiology and the recent development in vaccine development. Subsequently, we provide a systematic review of our validated method and tools for B- and T-cell epitope prediction as well as the use of molecular docking and dynamics in evaluating epitope affinity and stability in the discovery of a new tetravalent dengue vaccine through computational epitope-based vaccine design.

Read the Full-Text of the article here:
https://benthamopen.com/ABSTRACT/TOBIOCJ-14-9

Call for Thematic Issues – The Open Biochemistry Journal

★ The Guest Edited Thematic Issues are published free of charge ★

Aims & Scope:

The Open Biochemistry Journal is an open-access online journal dedicated to the rapid publication of original research articles, reviews/mini-reviews, letters and guest edited single topic issues in all sub-disciplines of biochemistry (including genomics, gene expression, replication, proteomics, structural biology, enzymology, bioenergetics, metabolism, signal transduction, bioinformatics, cell biology, glycoscience, glycobiology, glycochemistry, glycotechnology, pharmacology, enzyme inhibition, inhibitory processes, immunochemistry, macromolecules, biopolymers, and nitric oxide). The journal publishes clearly written articles describing significant advances in the field that are of great interest for the scientific community worldwide. Non-conclusive or confirmatory studies are not accepted.

Please send your Thematic Issue proposal:
madiha@benthamopen.net

Call for Thematic Issues – The Open Transportation Journal

★ The Guest Edited Thematic Issues are published free of charge ★

 

Aims & Scope:

The Open Transportation Journal is an Open Access online journal, which publishes research articles, reviews/mini-reviews, letters and guest edited single topic issues in the field of design and/or analysis of transportation systems. Areas that are covered include: traffic modeling, transportation networks, optimization, queuing, control, statistical and other models of transportation systems, cost models and other works aiming at providing the most complete and reliable source of information on current developments in the field.

The Open Transportation Journal, a peer reviewed journal, is an important and reliable source of current information on developments in the field. The emphasis will be on publishing quality articles rapidly and freely available worldwide.

 

Please send your Thematic Issue proposal:
madiha@benthamopen.net

Call for Papers -The Open Neurology Journal

Aims & Scope:

The Open Neurology Journal is an Open Access online journal, which publishes high quality research articles, reviews/mini-reviews, letters and guest edited single topic issues in all important areas of neurology and neurological disorders. The scope of the journal includes:

• Neurological progress
• Neurological and psychiatric therapies
• Stem cell applications
• Biomathematical models
• Neuroradiology
• Molecular neuroscience
• Neuropharmacology
• Neurochemistry

The Open Neurology Journal, a peer-reviewed journal, is an important and reliable source of current information on important developments in the field. The emphasis is on publishing high quality papers rapidly and making them freely available to researchers worldwide.

 

Please send your proposal:
madiha@benthamopen.net

CASE REPORT -A Successful Management of Supra-Renal Inferior Vena Cava Injury Following Penetrating Trauma: A Case Report

Author: Abdikarim Hussein Mohamed

Journal: The Open Urology & Nephrology Journal

Abstract

Penetrating trauma of the abdominal Inferior Vena Cava remains a life-threatening injury. Nearly half of patients with an injury of abdominal Inferior Vena Cava die before reaching the hospital. This makes injuries of IVC often fetal and the management of these injuries is usually challenging. Early hospital transfer, prompt diagnosis, rapid bleeding control and diminishing shock period remain significantly important factors that improve the survival rate. We report a successful surgical management of suprarenal inferior vena cava injury case and associated organ injuries following a stab knife wound.

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https://benthamopen.com/ABSTRACT/TOUNJ-13-18

CASE REPORT – Comparison of Acuseal and Standard ePTFE Vascular Grafts for Hemodialysis: A Retrospective Case Series

Author: Louisa M.S. Gerhardt

Journal: The Open Urology & Nephrology Journal

Abstract

Background:

Grafts, which allow early cannulation have been increasingly used to avoid starting dialysis via tunneled hemodialysis catheters. As we noted graft failures in patients with early cannulation grafts, we reviewed the outcome of these grafts and compared it to ePTFE grafts.

Materials and Methods:

We retrospectively analyzed time to first intervention, primary and secondary patency rates as well as the number of interventions needed to maintain patency in patients who received an early cannulation graft (GORE^® ACUSEAL, acuseal) or an ePTFE (GORE-TEX^®) vascular graft between January 2016 and November 2017 in our medical center.

Results:

12 patients who had received an acuseal vascular graft were compared with 13 patients with an ePTFE vascular graft. The mean time to first intervention was similar in both groups. On average 0.33 interventions per graft were needed per month to maintain patency in the acuseal group, and 0.08 in the ePTFE group (p = 0.02). The primary patency rate did not differ significantly between the groups. The secondary patency rate at the end of the observation period was significantly worse in the acuseal group (p = 0.02). Four acuseal grafts were lost after a mean of 202 days, whereas none of the ePTFE grafts was lost.

Conclusion:

Our data is consistent with our clinical impression of an increased number of interventions and lower longevity of the acuseal vascular graft. These data need conformation in a larger cohort.

Read the Full-Text of the article here:
https://benthamopen.com/ABSTRACT/TOUNJ-12-4

Call for Thematic Issue – The Open Urology & Nephrology Journal

★ The Guest Edited Thematic Issues are published free of charge ★

Aims & Scope:

The Open Urology & Nephrology Journal is an Open Access online journal, which publishes research articles, reviews/mini-reviews, letters, guest edited single topic issues and images that are unique or highly illustrative accompanied by a brief one-paragraph description of relevant clinical information in all areas of experimental and clinical research in the fields of urology and nephrology, renal replacement therapy (dialysis and transplantation), transplantation, radiology, endourology, prostatic diseases, nocturnal enuresis, pathology, erectile dysfunction.

The Open Urology & Nephrology Journal, a peer-reviewed journal, is an important and reliable source of current information on developments in the field. The emphasis will be on publishing quality papers rapidly and making them freely available to researchers worldwide.

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CASE REPORT – Conservative Treatment of Congenital Scoliosis – Case Report with a History of 22 Years

Author: Hans-Rudolf Weiss

Journal: The Open Orthopaedics Journal

ABSTRACT:

Congenital scoliosis is a three-dimensional deformity of the spine including a frontal plane deviation of the spine caused by malformations of vertebrae and ribs. Early surgery is suggested even in mild cases with formation failures in the first three years of life, although there are reports that, in this group of patients, a conservative approach might be beneficial. The purpose of this case report is to document the long-term outcomes of a patient with failures of formation and with a curve exceeding 50° over more than 20 years of his life.

Case Description:

The patient first presented at the age of 18 months with balanced failures of formation (hemivertebrae L1 left and Th 7 right) and a thoracolumbar main curve measuring 52° Cobb angle. He was treated with a pattern specific Chêneau style brace for 13 years. Nine years after brace wearing, he was presented for final review and assessment.

Results:

The wearing time was reported by the patient at the beginning of treatment at more than 18 hours a day. While applying this prescription of in-brace time the angle of curvature steadily decreased to age 7 at a curvature angle of 40° Cobb. Between age 7 and 11 years, the brace wearing time was reduced to 12 hours per day due to the low growth dynamics. With the beginning of puberty, the prescription of in-brace time was suggested to increase again to 20 hours per day. The patient’s compliance failed to meet the in-brace prescription amount, with an actual wearing time of only 12 hours per day and the curvature increased to 58° at Risser 4. At the final clinical review and assessment at the age of 24 years, an X-ray was taken and a Cobb angle of 63° in the main curvature area was measured. The patient was satisfied with his clinical appearance and was generally pain free. Only after vigorous sports activities, the patient felt pain in the main curvature area overnight and the following day. He reported that he can avoid this pain, if he applies the brace overnight. The patient described his quality of life as ‘good’.

Conclusion:

Patients with formation disorders should not undergo early surgery without considering high-quality brace treatment. These patients may have a nearly normal quality of life in adulthood with full participation in all activities, when the curvatures are balanced even with a high angle of curvature. This should not be applied to all cases as in those with one-sided segmentation disorders, surgery should be considered at an early stage.

Read the Full-Text of the article here:
https://openorthopaedicsjournal.com/VOLUME/13/PAGE/8/FULLTEXT/