contact time

Nano-silica from kaolinitic clay used as adsorbent for anionic and cationic dyes removal: linear and non-linear regression isotherms and kinetics studies

  • Gustave Tchanang, Chantale Njiomou Djangang*, Charles Fon Abi, Danie Laure Mbella Moukouri, Guillonnel Trésor Nyadjou Djabo, Jean Marie Kepdieu and Philippe Blanchart

Published on: 24th May, 2022

The increasing occurrence of wastewaters associated with industrial development has begotten a permanent search for new and more efficient techniques for the removal of hazardous substances such as heavy metals and dyes. The use of natural and available resources to develop improved and sustainable commodities for this purpose remains crucial and is among promising emerging green technologies for water treatment. It offers the gradual shifting of hazardous industrial chemicals precursors to the abundant non-metallic mineral resources that receive an added value. This work investigated the uptake capacity by the adsorption process of methylene blue (MB) and azocarmine G (AG) onto nano-silica synthesized from kaolinite clay. The effects of contact time (0-30 min), the adsorbent dosage (5-100 mg), the initial pH of the solution (1-11 for MB and 1-7 for AG), and the initial dye concentration (5-50 mg/L) were studied. The selected conditions to carry out kinetic and isotherm adsorption experiments were: 15 mins, 20 mg, 11 for MB, 1.01 for AG, and 50 mg/L. Four adsorption isotherms and three kinetic models were used to model the adsorption data thanks to linear and non-linear regression methods. From the obtained results, the Freundlich isotherm model fitted well the adsorption phenomenon while the pseudo-second-order kinetic model described well the adsorption mechanism. Furthermore, the free energy of adsorption was similar for the two absorbents, 0.71 kJ, pointing physisorption as the dominant adsorption mechanism. The optimum MB and AG uptake were respectively 13.8 and 36.1 mg/g. Conclusively, the nano-silica represents a potentially viable and powerful adsorbent whose use could lead to a plausible improvement in environmental preservation.
Cite this ArticleCrossMarkPublonsHarvard Library HOLLISGrowKudosResearchGateBase SearchOAI PMHAcademic MicrosoftScilitSemantic ScholarUniversite de ParisUW LibrariesSJSU King LibrarySJSU King LibraryNUS LibraryMcGillDET KGL BIBLiOTEKJCU DiscoveryUniversidad De LimaWorldCatVU on WorldCat
AbstractDOI: 10.29328/journal.acee.1001034Read Full Article HTMLRead Full Article PDF

Symmetry of Shank Muscle Strength, Passive Stiffness and Plantar Pressure Following IASTM Accompanied by Electrotherapy in a Case with Severe Ankle Stiffness

  • Seyed Hamed Mousavi*, Fateme Khorramroo and Hooman Minoonejad

Published on: 14th November, 2024

Excessive ankle stiffness can greatly impact mobility, leading to discomfort, difficulty in walking, and limited Range of Motion (ROM). We aimed to identify and address the symmetry of shank muscle strength, ankle passive stiffness, and plantar pressure distribution, in a patient with unilateral excessive ankle stiffness, utilizing Instrument-Assisted Soft Tissue Mobilization (IASTM) accompanied by Faradic Electrical Stimulation (FES).The patient’s muscle strength and ROM which had diminished due to 3.5 years of ankle immobilization post-rescue from amputation, underwent a 12-week program involving IASTM and FES. The plantar and dorsiflexion muscles’ torque, ROM, and plantar pressure were measured using an isokinetic and plantar distribution system before and after the intervention. Symmetry of muscle torque, ROM, and plantar pressure between two limbs were calculated for pre and post-test.Results indicated improvement in the ratio index of the concentric/eccentric dorsi- and plantar-flexion peak torque and dorsi- and plantar-flexion work, ROM, gait line length, and contact time after a 12-week intervention.The study suggests that IASTM and FES are effective interventions for restoring symmetry in a patient with post-operation complications, highlighting the need for further research on similar cases.
Cite this ArticleCrossMarkPublonsHarvard Library HOLLISGrowKudosResearchGateBase SearchOAI PMHAcademic MicrosoftScilitSemantic ScholarUniversite de ParisUW LibrariesSJSU King LibrarySJSU King LibraryNUS LibraryMcGillDET KGL BIBLiOTEKJCU DiscoveryUniversidad De LimaWorldCatVU on WorldCat
AbstractDOI: 10.29328/journal.jsmt.1001089Read Full Article HTMLRead Full Article PDF

Search by University/Institution

Enter your University/Institution to find colleagues at HSPI.

Ensuring author's satisfaction with

  • Friendly and hassle-free publication process
  • Less production time of articles
  • Constructive peer-review
  • Enhancing journal reputation
  • Regular feedback system
  • Quick response to authors' queries

Read More

Most Viewed Keywords

All Issues in 2025

Search Articles by Country

Get all latest articles in all Heighten Science Publications Inc journals by country.

Testmonials

This is to specify that I have had an extensive and detailed interaction with the Editorial team of Annals of Clinical Gastroenterology and Hepatology, USA, lasting over a significant period of time. ...

New Delhi, India

Anubha Bajaj

I very much appreciate the humanitarian services provided in my stead by this journal/publisher. It exhibits total absence of editorial impertinence. As an Author, I have been guided to have a fruitf...

Chrysanthus Chukwuma

Your journal co-operation is very appreciable and motivational. I am really thankful to your journal and team members for the motivation and collaboration to publish my work.

Assistant Professor, UCLAS Uttaranchal University,...

Archna Dhasmana

I wanna to thank clinical journal of nursing care and practice for its effort to review and publish my manuscript. This is reputable journal. Thank you!

Wollo University, Ethiopia

Atsedemariam Andualem

Your service is very good and fast reply, Also your service understand our situation and support us to publication our articles.

Palestine College of Nursing, Khan Younis, Gaza St...

Ayman M Abu Mustafa

I would like to mention that I had a wonderful experience working with HSPI. The whole process right from manuscript submission to peer review till the publication of the article was very prompt & eff...

Amarjeet Gambhir

''Co-operation of Archives of Surgery and Clinical Research journal is appreciable. I'm impressed at the promptness of the publishing staff and the professionalism displayed. Thank you very much for y...

Anıl Gokce

The services of the journal were excellent. The most important thing for an author is the speed of the peer review which was really fast here. They returned in a few days and immediately replied all o...

Eastern Mediterranean University, Cyprus

Zehra Guchan TOPCU

I like the quality of the print & overall service. The paper looks quite impressive. Hope this will attract interested readers. All of you have our best wishes for continued success.

Arshad Khan

I really liked the ease of submitting my manuscript in the HSPI journal. Further, the peer review was timely completed and I was communicated the final decision on my manuscript within 10 days of subm...

Abu Bashar

View More

Browse by Subjects

Biology Group Journals

Chemistry Group Journals

Pharma Group Journals

Mathematics & Physics Group Journals

Engineering Group Journals

Clinical Group Journals

Medical Group Journals

Help ?

HSPI: We're glad you're here. Please click "create a new Query" if you are a new visitor to our website and need further information from us.

If you are already a member of our network and need to keep track of any developments regarding a question you have already submitted, click "take me to my Query."