In Situ Adsorption of Mixed Anionic/Cationic Collectors in a Spodumene–Feldspar Flotation System: Implications for Collector Design

This work demonstrates a simple approach for the efficient removal of tetracycline (TC) antibiotic from an aqueous solution. The in situ-adsorption removal method involved instant precipitation formation of mixed metal hydroxides (MMHs), which could immediately act as a sorbent for capturing TC from an aqueous solution, by employing layered double hydroxide (LDH) components including magnesium and aluminum ions in alkaline conditions. By using this approach, 100% removal of TC can be accomplished within 4 min under optimized conditions. The fast removal possibly resulted from an instantaneous adsorption of TC molecules onto the charged surface of MMHs via hydrogen bonding and electrostatically induced attraction. The results revealed that our removal technique was superior to the use of LDH as a sorbent in terms of both removal kinetics and efficiency. Moreover, the recovery of captured TC was tested under the influence of various common anions. It was found that 98% recovery could be simply achieved by using phosphate, possibly due to its highly charged density. Furthermore, this method was successful for efficient removal of TC in real environmental water samples.

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Enhanced production of plumbagin in immobilized cells of Plumbago rosea by elicitation and in situ adsorption

Journal of Biotechnology ◽

10.1016/s0168-1656(02)00338-3 ◽

2003 ◽

Vol 101 (2) ◽

pp. 181-187 ◽

Cited By ~ 59

Author(s):

P. Komaraiah ◽

S.V. Ramakrishna ◽

P. Reddanna ◽

P.B. Kavi Kishor

Keyword(s):

Immobilized Cells ◽

In Situ Adsorption ◽

Enhanced Production ◽

Plumbago Rosea

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Photocatalytic performance of highly amorphous titania–silica aerogels with mesopores: The adverse effect of the in situ adsorption of some organic substrates during photodegradation

Applied Surface Science ◽

10.1016/j.apsusc.2015.08.113 ◽

2015 ◽

Vol 356 ◽

pp. 521-531 ◽

Cited By ~ 20

Author(s):

István Lázár ◽

József Kalmár ◽

Anca Peter ◽

Anett Szilágyi ◽

Enikő Győri ◽

...

Keyword(s):

Adverse Effect ◽

Photocatalytic Performance ◽

Silica Aerogels ◽

Organic Substrates ◽

In Situ Adsorption ◽

Amorphous Titania

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In situ adsorption of mercury, methylmercury and other elements by iron oxyhydroxides and organic matter in lake sediments

Applied Geochemistry ◽

10.1016/j.apgeochem.2010.04.005 ◽

2010 ◽

Vol 25 (7) ◽

pp. 984-995 ◽

Cited By ~ 51

Author(s):

Stéphane Feyte ◽

André Tessier ◽

Charles Gobeil ◽

Daniel Cossa

Keyword(s):

Organic Matter ◽

Lake Sediments ◽

Iron Oxyhydroxides ◽

In Situ Adsorption

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Modified Nanodiamonds for Adsorption of Propidium Iodide and Aflatoxin

MRS Proceedings ◽

10.1557/proc-1236-ss09-05 ◽

2009 ◽

Vol 1236 ◽

Cited By ~ 2

Author(s):

Natalie Gibson ◽

Tizy-Jiun Mark Luo ◽

Olga Shenderova ◽

Yong-Jae Choi ◽

Donald W Brenner

Keyword(s):

Propidium Iodide ◽

Biological Properties ◽

Biological Molecules ◽

Adsorption Mechanisms ◽

In Situ Adsorption ◽

Adsorption Capacities ◽

Vis Spectroscopy ◽

Wide Range ◽

Target Molecules

AbstractNanodiamonds (NDs) have desirable chemical, physical and biological properties that lend them to a wide range of applications. ND’s facile surface chemistry, for example, can be used to create a high affinity for adsorbing various biological molecules. However, NDs, which are commercially available from multiple vendors, show inconsistencies with surface groups, aggregate sizes and impurity contents that may limit adsorption. We explore adsorption mechanisms of molecules to NDs in efforts to expand ND applications to drug delivery agents, bio-labels and enterosorbents. In doing so, several types of NDs and modification methods are evaluated to increase adsorption capacity and selectivity of propidium iodide and aflatoxin B1. Capacities and binding strengths of target molecules are assessed by Langmuir isotherms and transform calculations. UV-Vis spectroscopy shows our modification treatments are successful in increasing ND adsorption capacities. Additionally, cyclic voltammetry measurements, used to monitor in-situ adsorption, show electrochemical detection even after binding.

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