Diphonix Resin® in sorption of heavy metal ions in the presence of the biodegradable complexing agents of a new generation

AbstractNanoparticle-based technologies have played important roles in providing opportunities for the development of a new generation of sensing tools. Because of their unique optical, chemical, electrical, and catalytic properties, gold nanoparticles (AuNPs) have been extensively studied for biological and chemical detections as well as analytical applications. AuNP-based sensors are expected to change the foundations of sensing and detecting biomolecules and metal ions. The ease of surface functionalization of AuNPs allows chemists to create the desired functionalities for specific applications. In this review, we will discuss the use of surface-functionalized AuNPs for fabricating smart sensors that are capable of detecting heavy metal ions, glucose, and specific biomolecules such as protein and DNA.

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Chelating Agents of a New Generation as an Alternative to Conventional Chelators for Heavy Metal Ions Removal from Different Waste Waters

Expanding Issues in Desalination ◽

10.5772/21180 ◽

2011 ◽

Cited By ~ 15

Author(s):

Dorota Koodynska

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Heavy Metal Ions ◽

Chelating Agents ◽

Waste Waters ◽

Heavy Metal Ions Removal ◽

New Generation ◽

Metal Ions Removal

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Effects of operating parameters on efficiency of lead removal by complexation-microfiltration process

Hemijska industrija ◽

10.2298/hemind111122007t ◽

2012 ◽

Vol 66 (4) ◽

pp. 461-467 ◽

Cited By ~ 3

Author(s):

Katarina Trivunac ◽

Slavica Stevanovic

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Heavy Metal Ions ◽

Ph Value ◽

Complexing Agents ◽

Complexing Agent ◽

Lead Removal ◽

Operating Pressure ◽

Diethylaminoethyl Cellulose ◽

Rejection Coefficient

Majority of lead content found in the environment is the result of human activities. Heavy metals can be hazardous because they tend to bioaccumulate. Complexation-microfiltration process for the removal of Pb(II) ions was studied. The aim of microfiltration of the model wastewater containing heavy metal ions was finding an optimum ratio between the concentrations of the complexing agent and metal, and determining the most favorable pH value. The microfiltration experiments were carried out in a stirred dead-end cell. Diethylaminoethyl cellulose (DEAE 23) was selected as the complexing agent. Versapor membranes were used to separate formed polymer-metal complex. The concentration of heavy metal ions after microfiltration in aqueous solution was determined using the atomic absorption spectroscopy (AAS). Effects on the amount of complexing agent, concentration of metal ion, pH value and operating pressure on the flux, J, and rejection coefficient, R, were investigated. Experimental results indicate that the pH of the solution has considerable influence on the rejection coefficient. An increase in pH and the amount of complexing agents enabled us to obtain very high retention coefficient (99%).

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