Antimicrobial activity and cytotoxicity of cotton fabric coated with conducting polymers, polyaniline or polypyrrole, and with deposited silver nanoparticles

Conducting polymers, such as polyaniline and polypyrrole, have frequently been discussed in the literature due to ease of preparation and high application potential. These polymers have been observed to interact with organic dyes because of the similarity in the conjugated molecular structure of both moieties. The interaction manifests itself in three fundamental directions that have been so far treated separately. The first is represented by the conductivity enhancement and morphology control when using organic dyes as templates in polypyrrole preparation. The adsorption of dyes on conducting polymers is the second field oriented at the water pollution treatment. Finally, the photocatalytic decomposition of organic dyes aims at the similar environmental target. The last two applications do not require the presence of conductivity which, on the other hand, is a key parameter of conducting polymers. The future design of advanced adsorbents, however, has to exploit both the conductivity and electroactivity in the control of pollutant adsorption or degradation. For this reason, all these interactions and their practical impact are considered in the present review.

Interaction of conducting polymers, polyaniline and polypyrrole, with organic dyes: polymer morphology control, dye adsorption and photocatalytic decomposition

Conductive polymers in water treatment: A review

Advances in decontamination of wastewater using biomass-basedcomposites: A critical review

Removal of benzidine based textile dye using different metal hydroxides generated in situ electrochemical treatment-A comparative study

The paper deals with the study on application of activated carbon (Cordia sebestena activated carbon (CSAC)) and polypyrrole polymer composite prepared from the precursor fruit of the gardening plant material Cordia sebestena for the removal of cationic dye (basic dye namely Basic Red 29 (BR29)) from aqueous solutions. Adsorption experiments are carried out using batch system in order to do equilibrium adsorption isotherm, kinetics and thermodynamic studies. It is found that chemical modification of plant wastes like sawdust coated with polypyrrole called polypyrrole polymer composite is an efficient adsorbent for the removal of cationic dye BR29 from aqueous solutions when compared to activated carbon (CSAC).

Equilibrium and kinetic studies for the adsorption of Basic Red 29 from aqueous solutions using activated carbon and conducting polymer composite

Application of activated carbon (CSAC) and polypyrrole composite (PPC) developed from the precursor, fruit of the gardening plant material Cordia sebestena has been investigated for the removal of Direct Green 6 (DG6) from aqueous solution. Batch adsorption experiments were carried out using CSAC and PPC and a comparative study was also made. Effect of parameters, namely initial dye concentration, contact time, pH and temperature was studied. The kinetic studies were analysed with pseudo-first-order and pseudo-second-order models. Experimental isotherm data were also analysed with Langmuir and Freundlich adsorption isotherm models. Thermodynamic parameters were also measured. Experimental results showed that percentage removal of DG6 was higher with PPC than the percentage removal obtained by CSAC. Hence, it is proposed that PPC is superior and efficient adsorbent for the removal of DG6 from aqueous solutions.

Studies on adsorptive removal of Direct Green 6 using a non-conventional activated carbon and polypyrrole composite

Activated carbon (CSAC) and Polypyrrole coated sawdust composite (PPy/SD) were prepared from the fruit of the gardening plant material Cordia Sebestena (CS). Activated carbon prepared through chemical impregnation with H3PO4 solution followed by thermal activation. This study investigates the adsorption behaviour of activated carbon and polypyrrole coated sawdust composite towards Reactive Orange 16 (anionic-reactive dye). Various experiments have been carried out using batch adsorption technique to study the effects of the main parameters such as contact time, initial dye concentration, pH and temperature. The morphology of adsorbents was studied by SEM and FTIR. The kinetic data was studied using pseudo first order, second order,elovich and intra particle diffusion models to understand the reaction mechanism. The isotherm data was studied using Langmuir, Freundlich, Tempkin and Dubinin-Reduskevich models. Thermodynamic parameters were also calculated. The performance of CSAC was compared with PPy/SD. The data obtained confirmed that PPy/SD has been found a very efficient adsorbent for the adsorption of RO16 as compared with CSAC.

https://www.imedpub.com/articles/removal-of-reactive-orange-16-from-aqueous-solutions-using-activated-carbonand-polypyrrole-coated-sawdust-composite-prepared-from.pdf

Removal of reactive orange 16 from aqueous solutions using activated carbonand polypyrrole coated Sawdust composite prepared from Cordia sebestena

The potentiality of polypyrrole coated sawdust (PPy/SD) derived from the fruit of the gardening plant material of Cordia Sebestena to remove acidic dye and basic dye [Acidic Dye namely Acid Orange 7 (AO7) and Basic dye namely Basic Red 29 (BR29)] from aqueous solutions via adsorption was investigated. Adsorption experiments are carried out using batch system in order to do equilibrium adsorption isotherm, kinetics and thermodynamic studies. It is found that chemical modification of plant waste like sawdust coated with polypyrrole called polypyrrole composite is an efficient adsorbent for the removal of AO7 and BR29 from aqueous solutions. Finally, the performance of PPy/SD was compared with both the dyes. The experimental results indicated that adsorbent is effective and economically viable for the removal of both acidic (AO7) and basic (BR29) dyes and is most suitable for the removal of Acid Orange 7 from aqueous solutions than Basic Red 29.

/pdf/comparative-study-on-potentiality-of-polypyrrole-compositeas-ww3xtv73ht.pdf

Arumugam Geetha

Papers

Equilibrium and kinetic studies for the adsorption of Basic Red 29 from aqueous solutions using activated carbon and conducting polymer composite

Studies on adsorptive removal of Direct Green 6 using a non-conventional activated carbon and polypyrrole composite

Removal of reactive orange 16 from aqueous solutions using activated carbonand polypyrrole coated Sawdust composite prepared from Cordia sebestena

Comparative Study on Potentiality of Polypyrrole compositeas Adsorbent for the removal of Acidic and Basic dyes fromAqueous solutions