Development of a cost-effective, recyclable and viable metal ion doped adsorbent for simultaneous adsorption and reduction of toxic Cr (VI) ions

Adsorption is a unique process for the removal of pollutants from water and wastewater since the process is cost effective, easily adoptable and environmentally compatible. The micro algae are a promising way to produce a useful adsorbent for Thorium (VI) removal from aqueous solution. The specific surface area of the microalgae was determined and its properties studied by scanning electron microscopy (SEM). Adsorptive removal of Thorium (VI) from aqueous solution on micro algae has been studied under varying conditions of agitation time, metal ion concentration, adsorbent dose and pH to assess the kinetic and equilibrium parameters. Adsorption equilibrium was obtained in 120 min for 20 to 120 mg/L of Thorium (VI) concentrations. The Langmuir, Freundlich, Temkin, Redlich-Peterson isotherm models, kinetic models and thermodynamic models were found to provide an excellent fitting of the adsorption data. The adsorption capacity of thorium 91.73% maximum percent removal in thorium at pH 3. This adsorbent was found to be effective and economically attractive.

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Synthesis of Imprinted Polysiloxanes for Immobilization of Metal ions

MRS Proceedings ◽

10.1557/opl.2014.867 ◽

2014 ◽

Vol 1675 ◽

pp. 209-214

Author(s):

Adnan Mujahid ◽

Faisal Amin ◽

Tajamal Hussain ◽

Naseer Iqbal ◽

Asma Tufail Shah ◽

...

Keyword(s):

Metal Ions ◽

Metal Ion ◽

Binding Capacity ◽

Sol Gel ◽

Cost Effective ◽

Inorganic Materials ◽

Sem Images ◽

Target Analytes ◽

Ion Imprinted ◽

Ft Ir

ABSTRACTImprinting is a well-established technique to induce recognition features in both organic and inorganic materials for a variety of target analytes. In this study, ion imprinted polysiloxanes with varying percentage of coupling agent i.e. 3-chloro propyl trimethoxy silane (CPTM) were synthesized by sol-gel method for imprinting of Cr3+. The imprinting of Cr3+ in cross-linked siloxane network was investigated by FT-IR which indicates the metal ion is coordinated with oxygen atoms of polysiloxanes. SEM images revealed that imprinted polysiloxanes possess uniform particles of submicron size. It was experienced that by increasing the concentration of CPTM up to 10% (v/v) substantially improves the binding capacity of polysiloxanes which allows us to recognized Cr3+ down to 50µg/L. Furthermore, the selectivity of Cr3+-imprinted polysiloxanes was evaluated by treating them with other competing metal ions of same concentration i.e. Cr6+, Pb2+ and Ni2+. In this regard, polysiloxanes showed much higher binding for imprint ion i.e. Cr3+ in comparison to above mentioned metal ions. Finally, the regenerated polysiloxanes were studied in order to reuse them thus, developing cost effective biomimetic sensor coatings.

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Green Synthesis of Gold and Silver Nanoparticles UsingAverrhoa bilimbiFruit Extract

Journal of Nanotechnology ◽

10.1155/2013/906592 ◽

2013 ◽

Vol 2013 ◽

pp. 1-6 ◽

Cited By ~ 39

Author(s):

R. S. Rimal Isaac ◽

G. Sakthivel ◽

Ch. Murthy

Keyword(s):

Silver Nanoparticles ◽

Green Synthesis ◽

Absorption Spectroscopy ◽

Metal Ion ◽

Cost Effective ◽

Average Diameter ◽

Ion Concentration ◽

Fruit Extract ◽

Gold And Silver Nanoparticles ◽

One Step

We report on rapid one-step green synthesis of gold and silver nanoparticles using fruit extract ofAverrhoa bilimbi Linn. UV-Vis absorption spectroscopy was used to monitor the quantitative formation of gold and silver nanoparticles. The characteristics of the obtained gold and silver nanoparticles were studied using UV-Vis absorption spectroscopy (UV/Vis), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), and Energy-dispersive spectroscopy (EDX). UV/Vis spectrum showed Surface Plasmon Resonance (SPR) for both gold and silver nanoparticles at 540 and 420 nm. The EDX spectrum of the solution containing gold and silver nanoparticles confirmed the presence of elemental gold and silver signals. The average diameter of the prepared nanoparticles in solution was about 50–150 nm. Synthesized particles were either hexagonal or rhomboidal in shape. This synthesis approach of gold and silver nanoparticles is cost effective and can be widely used in biological systems. The effect of fruit extract and metal ion concentration was also studied.

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GREEN SYNTHESIS OF SILVER NANOPARTICLES USING MICROALGAL EXTRACT AND ITS APPLICATION IN METAL ION REMOVAL FROM AQUEOUS SOLUTION

Journal of Experimental Biology and Agricultural Sciences ◽

10.18006/2021.9(2).214.230 ◽

2021 ◽

Vol 9 (2) ◽

pp. 214-230

Author(s):

Surindra Negi ◽

◽

Vir Singh ◽

Jyoti Rawat ◽

◽

...

Keyword(s):

Heavy Metals ◽

Aqueous Solution ◽

Silver Nanoparticles ◽

Ag Nanoparticles ◽

Metal Ion ◽

Electrostatic Force ◽

Physical Adsorption ◽

Cost Effective ◽

Synthesis Of Nanoparticles ◽

Stabilizing Agents

Heavy metal pollution is of great concern and cannot be ignored as heavy metals are highly mobile in soil and are recalcitrant. Nanotechnology provides a novel sustainable approach for synthesizing materials of desired properties, composition, and structure, it is however expected to adsorb heavy metals and play a significant role in water treatment. Green chemistry is the cost-effective, non-toxic, and environment friendly approach that involves the use of biological components as reducing and stabilizing agents for the synthesis of nanoparticles. In the present study, heavy metals such as cadmium (Cd II) and lead (Pb II) were successfully removed from its aqueous solution by an adsorption process using the silver nanoparticles of size ~15nm biosynthesized using freshwater algal extract. The adsorption peak at 411 nm confirms the formation of silver nanoparticles. The maximum value of metal ion adsorption capacity (23.98 mg/g) was observed for Pb (II). The higher value of R2 showed that the experimental data were fitted best with Langmuir isotherm. The rate kinetics study showed that Pb (II) adsorption on Ag nanoparticles followed pseudo-second order kinetics (R2>0.9) indicating that Pb (II) was attached to the nanoparticles surface through electrostatic force of attraction, also referred to as chemisorption whereas Cd (II) adsorption on Ag nanoparticles followed pseudo-first order kinetics (R2 >0.8) indicating physical adsorption between adsorbate and adsorbent.

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Modeling of simultaneous adsorption of dye and metal ion by sawdust from aqueous solution using of ANN and ANFIS

Chemometrics and Intelligent Laboratory Systems ◽

10.1016/j.chemolab.2018.07.012 ◽

2018 ◽

Vol 181 ◽

pp. 72-78 ◽

Cited By ~ 20

Author(s):

Maryam Dolatabadi ◽

Marjan Mehrabpour ◽

Morteza Esfandyari ◽

Hosein Alidadi ◽

Mojtaba Davoudi

Keyword(s):

Aqueous Solution ◽

Metal Ion ◽

Simultaneous Adsorption

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A Perspective on Recent Advances in Piezoelectric Chemical Sensors for Environmental Monitoring and Foodstuffs Analysis

Chemosensors ◽

10.3390/chemosensors7030039 ◽

2019 ◽

Vol 7 (3) ◽

pp. 39 ◽

Cited By ~ 12

Author(s):

Kuchmenko ◽

Lvova

Keyword(s):

Chemical Sensors ◽

Metal Ion ◽

Sample Pretreatment ◽

Cost Effective ◽

Bulk Acoustic Wave ◽

Multisensor Systems ◽

Highly Sensitive ◽

Wide Range ◽

Wastewater Samples

This paper provides a selection of the last two decades publications on the development and application of chemical sensors based on piezoelectric quartz resonators for a wide range of analytical tasks. Most of the attention is devoted to an analysis of gas and liquid media and to industrial processes controls utilizing single quartz crystal microbalance (QCM) sensors, bulk acoustic wave (BAW) sensors, and their arrays in e-nose systems. The unique opportunity to estimate several heavy metals in natural and wastewater samples from the output of a QCM sensor array highly sensitive to changes in metal ion activity in water vapor is shown. The high potential of QCM multisensor systems for fast and cost-effective water contamination assessments “in situ” without sample pretreatment is demonstrated.

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Overview of integrated phytoremediation for heavy metals contaminated soil

Sustainable Forestry ◽

10.24294/sf.v1i4.931 ◽

2018 ◽

Vol 1 (4) ◽

Cited By ~ 1

Author(s):

Tzung-Yuh Yeh ◽

Chitsan Lin

Keyword(s):

Heavy Metals ◽

Contaminated Soil ◽

Metal Ion ◽

Large Scale ◽

Chelating Agent ◽

Cost Effective ◽

Heavy Metals Removal ◽

Metals Removal ◽

Cost Effective Approach ◽

Environmentally Safe

Heavy metal contaminated soil due to industrial, agricultural and municipal activities is becoming a global concern. Heavy metals severely affect plants, animals and human health. A suitable technology is necessary for heavy metals removal because it cannot self-decomposition as organic compounds. Among the various technologies surveyed, phytoremediation is one of the safest, most innovative, environmental friendly and cost-effective approach for heavy metals removal. Nevertheless, traditional phytoremediation practices pose some limitations such as long processing time, unstable treatment efficiency and limited application at large scale. In many methods proposed to improve phytoremediation, integrated phytoremediation has been studied in the recent years. Integrated phytoremediation use chelating agents and phytohormones to enhance phytoremediation. This is an environmentally safe, saving time and relative high effective method. Results showed that the association of a metal ion and a chelating agent to form chelates helps to maintain the availability of metals in the soil for the uptake of plants. Phytohormones supply nutrients for the soil to support vegetable growth. Therefore, integrated phytoremediation is a promising solution to overcome the disadvantages of conventional phytoremediation. It should be taken commercialization and need more applied projects in this field to demonstrate and clarify the real potential of this technology. In view of above, this manuscript reviews the mechanism and the efficiency of integrated phytoremediation for heavy metals in contaminated soil to give an overview of this technology.

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Application of drug–metal ion interaction principle in conductometric determination of imatinib, sorafenib, gefitinib and bosutinib

Open Chemistry ◽

10.1515/chem-2020-0123 ◽

2020 ◽

Vol 18 (1) ◽

pp. 798-807

Author(s):

Hassan A. Alhazmi ◽

AbdulRhman Ali Bokar Nasib ◽

Yasser Ali Musleh ◽

Khaled Qassim Hijri ◽

Zia ur Rehman ◽

...

Keyword(s):

Quality Control ◽

Anticancer Agents ◽

Metal Ion ◽

Cost Effective ◽

Measured Concentration ◽

Maximum Reduction ◽

Analyte Solution ◽

Effective Analysis ◽

Drug Solution

AbstractAn analytical method for the quantification of anticancer agents such as imatinib, sorafenib, gefitinib and bosutinib using conductometry was developed. Each drug solution was mixed with measured concentration of metal ion (Cu2+) solution resulting in drug–metal ion complexation in the titration cell. Conductance was progressively decreased on addition of the analyte solution up to a point of maximum reduction, that is, the end point. Corrected conductance values were calculated from the observed conductance and used to plot a graph against the volume of drug solution added. No interferences were observed from blank and placebo as they gave no clear inflection in the conductivity during titration. The precision and the accuracy of the developed method was established by the analysis of quality control samples; %RSD of corrected conductance values <2% and recovery results within 100 ± 2% were achieved. The calibration graphs obtained were linear over the concentrations 1.0–1.4 mM for all the drugs (R2 > 0.99). The drugs were successfully analyzed in their respective dosage forms prepared in-house. The method has offered easier, faster and cost-effective analysis of the selected drugs and can be used for routine determinations in the quality control laboratories. More importantly, it is an environmental friendly procedure, as no organic solvent was used throughout the analysis.

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An Overview on Eco-Friendly Polymer Composites for Heavy Metal Ion Remediation

Current Analytical Chemistry ◽

10.2174/1573411016666200311105838 ◽

2020 ◽

Vol 16 ◽

Author(s):

Muhammad Shahid Nazir ◽

Bushra Anees Palvasha ◽

Zaman Tahir ◽

Sadaf ul Hassan ◽

Zulfiqar Ali ◽

...

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Polymer Composites ◽

Metal Ion ◽

Water Contamination ◽

Environmental Problem ◽

Cost Effective ◽

Review Article ◽

Human Beings ◽

Global Environmental

Background: Water contamination by noxious heavy metals due to urbanization is a global environmental problem. Heavy metal ions pollution make the water unsuitable for drinking and are also highly toxic to human beings and eco-system. Remediation of heavy metals is therefore very crucial. Method: Adsorbents based on biopolymer and eco-friendly polymer composites have been developed and fabricated to remediate and remove heavy metals from the ecosystem. Result: In recent years, biocomposites have been successful as cost effective adsorbents for the remediation of various contaminants with their eco-friendly nature and sustainability. Conclusion: This review article gives an overview on the remediation of heavy metals using green biocomposites.

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