Studying the Adsorptive Behavior of Poly(Acrylonitrile-co-Styrene) and Carbon Nanotubes (Nanocomposites) Impregnated with Adsorbent Materials towards Methyl Orange Dye

Abstract

In this study, a polymeric (acrylonitrile-co-styrene) P(AN-co-St) composite was impregnated with adsorbents, such as sulfonated and multiwall carbon nanotubes (MWCNTs), to increase the adsorptive characteristics of the nanocomposite upon the removal of methyl orange (MO) dye under different conditions. A novel nanocomposite copolymer mixture of P(AN-co-St) and SP(AN-co-St) was used. MWCNTs were prepared by a low-cost chemical vapor deposition (CVD) process. Variation in MO adsorption onto the three nanocomposites was examined in an aqueous solution via the batch technique with respect to contact time, initial MO concentration, adsorbent dosage, pH, and temperature. The surface of the nanocomposites was characterized by a scanning electron microscope (SEM), particle size distribution (PSD), Fourier transform infrared (FTIR), and Raman analysis. The experimental data showed that the efficiency of P(AN-co-St)/ MWCNT removal increased under the conditions of an acidic pH (3 and 5) with an agitation speed of 140 rpm, a sorbent weight of 0.01 g, and 20 mg of initial dye. The maximum sorption capacities were 121.95, 48.78, and 47.84 mg g−1 for the P(AN-co-St)/ MWCNTs, SP(AN-co-St), and P(AN-co-St) composites, respectively, as assessed by the Langmuir model. Additional isotherm models, such as the Freundlich, Temkin, and Halsey models, were used to examine the experimental data. A pseudo-second-order model was found to be more fitting for describing the sorption.

Potential Applications of Arthrospira platensis Lipid-Free Biomass in Bioremediation of Organic Dye from Industrial Textile Effluents and Its Influence on Marine Rotifer (Brachionus plicatilis)

“…It has been found that the adsorption rate of IV2R dye is high at the beginning then reduces gradually until the saturation stages were wholly reached after a definite concentration of dye for both the adsorbent biomasses. The number of accessible functional groups reduces as the initial dye concentration increases, as seen by the decrease in percentage sorption as the initial dye ions concentrations increase, due to the fact that the amount of sorbed dye increases in the meantime [ 8 ]. This behavior may be due to the fact that at lower concentrations there were sufficient active adsorbent sites for adsorption of presently available dye molecules, but at higher concentrations, due to the inadequate ratio of active sites with dye molecules, adsorption is less [ 42 ].…”

“…Textile dye effluent treatment techniques are becoming more difficult owing to increasing the industrial effluents disposal costs, diminishing resources of water, and stricter discharge rules that need decreased acceptable pollutant levels in wastewater streams; therefore, it is important to remove these dyes from industrial effluents before discharging into the environment [ 7 ]. Several physiochemical treatment methods for dye elimination have been investigated, including ozonation, the adsorption membrane process, electrodialysis, coagulation–flocculation, nano-filtration, trickling filters, membrane processes, reverse osmosis, and adsorption techniques [ 8 ]. Adsorption is one of the effective equilibrium separation technologies that so far have been successful in removing pollutants from wastewater owing to its simple design, high adsorption capacity, simplicity of operation, insensitivity, and flexibility to toxic pollutants [ 9 ].…”

Assessment of Water Quality, Eutrophication, and Zooplankton Community in Lake Burullus, Egypt

“…It could also be attributed to industrial effluents and urbanization. High temperature and low dissolved oxygen concentration lead to an increase in toxicity of Zn 2+ [22]. Cr is one of the biochemically active transition metals in the aquatic environment [64].…”

“…These parameters are considered the most limiting factors affecting the survival and growth of aquatic organisms [19][20][21]. Poor water quality could be produced via low aquatic flow, municipal discharges, and wastewater effluents [22]. In this study, Burullus Lake was chosen because of its economic importance in Egypt, based on its various uses and surroundings, such as tourism, fisheries activity, nutrient enrichment, and industrial water sources, among others.…”

Ammonia Bioremediation from Aquaculture Wastewater Effluents Using Arthrospira platensis NIOF17/003: Impact of Biodiesel Residue and Potential of Ammonia-Loaded Biomass as Rotifer Feed

“…The pH plays a significant role in numerous cellular processes related to structure, energy metabolism, organelle function, enzymes, and proteins. The pH value affects the external charge of the adsorbents [ 48 , 49 ]. The adsorption of ammonia (NH 4 + ) by two natural adsorbents of ACDW and LFB was examined at pH values of 2, 4, 6, 8, and 10 ( Figure 4 ), while keeping the other parameters constant.…”