Results 21 to 30 of about 110,360 (315)

Study of Equilibrium and Kinetics of Pb(II) in Solution Using Persimmon Tannin Gel as an Adsorbent

open access: yesJurnal Kimia Sains dan Aplikasi, 2019
Heavy metals concentrations exceeding the recommended threshold are hazardous for the environment, so there is a need for handling it safely. The purpose of this research was to determine the adsorption capacity and kinetics of adsorption.
Thamrin Azis   +3 more
doaj   +1 more source

Adsorption Kinetics and Electrode Processes

open access: yesJournal of the American Chemical Society, 1957
Prof. H. A. Laitinen (Urbana): We have used double layer capacity measurements to measure adsorption as a function of time during the life of slowly forming mercury drops. For many substances that are not extremely surface active, so that the solution concentration is 1 to 10 mM, the double layer capacity per unit area is essentially constant during
Paul Delahay, Isaac Trachtenberg
openaire   +2 more sources

The kinetics of adsorption processes [PDF]

open access: yesProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1931
Abstract In any process of adsorption, dynamic equilibrium is reached when the number of molecules condensing in unit time on the adsorbing surface is equal to the molecules evaporating. Langmuir obtained the well-known relation between the mass adsorbed and the pressure m = k1p/(k2p + b) by writing the number of molecules evaporating
Alfred Rene Jean Paul Ubbelohde   +1 more
openaire   +1 more source

Microwave-assisted synthesis of amphoteric fluorescence carbon quantum dots and their chromium adsorption from aqueous solution

open access: yesScientific Reports, 2023
The chromium adsorption behavior from aqueous solution by the amphoteric Janus nitrogen-doped carbon quantum dots (AJ–N–CQDs) was investigated.
Hebat-Allah S. Tohamy   +2 more
doaj   +1 more source

Preparation and characterization of nano-hydroxyapatite and its competitive adsorption kinetics of copper and lead ions in water

open access: yesNanomaterials and Nanotechnology, 2016
In this work, microemulsion and hydrothermal methods were combined to synthesize hydroxyapatite nanomaterials. Competitive adsorption kinetics of aqueous Pb 2+ and Cu 2+ on nano-hydroxyapatite surfaces were investigated by performing adsorption kinetic ...
Yujia Song   +3 more
doaj   +1 more source

Potentiality of banana peel for removal of Congo red dye from aqueous solution: isotherm, kinetics and thermodynamics studies

open access: yesApplied Water Science, 2018
Potentiality of fruit peel (banana peel) was evaluated by adsorption of Congo red (CR) dye from aqueous solution. The adsorption study was performed by varying operating variables such as pH, initial concentration of CR, adsorbent dose, contact time and ...
Naba Kumar Mondal, Sumana Kar
doaj   +1 more source

Study of the Adsorption Thermodynamics and Kinetics of Lipoic Acid onto Three Types of Resin

open access: yesAdsorption Science & Technology, 2004
The adsorption of lipoic acid on three different types of resin was compared. Studies of the adsorption thermodynamics and kinetics of lipoic acid onto XAD-4, NDA-100 and ND-90 resins were carried out via static experiments.
Wei Ruixia   +5 more
doaj   +1 more source

Waste Plant Material as a Potential Adsorbent of a Selected Azo Dye

open access: yesChemical and Process Engineering, 2017
This paper discusses the adsorption of Direct Orange 26 azo dye on sunflower husk - an agricultural waste product. During the study, sorption kinetics and equilibrium as well as sorption capacity of the husk were investigated. The adsorption kinetics was
Tomczak Elwira, Tosik Paweł
doaj   +1 more source

Kinetic model for the sorption of copper ions onto sugar beet shreds [PDF]

open access: yesHemijska Industrija, 2014
Adsorption kinetics is of great significance to evaluate the performance of adsorption process. The kinetics of copper ions adsorption onto different sized sugar beet shreds has been considered.
Brdar Mirjana M.   +3 more
doaj   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

open access: yesFEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli   +8 more
wiley   +1 more source

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