Nanomaterials have been extensively studied for heavy metal ions and dye removals from wastewater. This article reviews the role of nanomaterials as effective adsorbents for wastewater purification. In recent years, numerous novel nanomaterial adsorbents have been developed for enhancing the efficiency and adsorption capacities of removing contaminants from wastewater. The innovation, forthcoming development, and challenges of cost-effective and environmentally acceptable nanomaterials for water purification are discussed and reviewed in this article. This review concludes that nanomaterials have many unique morphological and structural properties that qualify them to be used as effective adsorbents to solve several environmental problems.

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The role of nanomaterials as effective adsorbents and their applications in wastewater treatment

Kinetics, isotherms and thermodynamic modeling of liquid phase adsorption of Rhodamine B dye onto Raphia hookerie fruit epicarp

https://cyberleninka.org/article/n/1042710.pdf

Kinetic, equilibrium and thermodynamic studies of synthetic dye removal using pomegranate peel activated carbon prepared by microwave-induced KOH activation

Mesoporous activated coconut shell-derived hydrochar prepared via hydrothermal carbonization-NaOH activation for methylene blue adsorption.

Up to 84 000 tons of dye can be lost in water, and 90 million tons of water are attributed annually to dye production and their application, mainly in the textile and leather industry, making the d...

/pdf/degradation-of-anthraquinone-dyes-from-effluents-a-review-1ufvzon8z5.pdf

Degradation of Anthraquinone Dyes from Effluents: A Review Focusing on Enzymatic Dye Degradation with Industrial Potential

https://cyberleninka.org/article/n/13265.pdf

Kinetics and equilibrium study for the adsorption of textile dyes on coconut shell activated carbon

/pdf/effect-of-ph-on-adsorption-and-photocatalytic-degradation-1ksl2fjrvb.pdf

Effect of pH on adsorption and photocatalytic degradation efficiency of different catalysts on removal of methylene blue.

The present study shows that the H2SO4-modified coconut husk derived activated carbon powder (CHACP) can be used as a potential adsorbent for the removal of crystal violet (CV, basic dye) from aqueous solutions. Experiments were carried out as a function of contact time, concentration, pH, mass dosage, and temperature, the equilibrium was attained in 60 min. The amount of dye uptake (mg/g) was found to increase with increase in dye concentration, pH, temperature, and contact time. The kinetics of CV on to the adsorbent can be described well by pseudo-second order  >  Elovich  >  pseudo-first order > intra-particle diffusion equation. The applicability of the isotherm’s model for the present data follows the order: Freundlich  >  Temkin  >  Langmuir. Based on the calculated thermodynamic parameters such as enthalpy (ΔH°), entropy (ΔS°), activation energy (Ea), sticking probability (S*), and Gibbs free energy changes (ΔG°), it is noticeable that the sorption of CV dye onto CHACP was a spontaneous an...

Adsorption isotherm, kinetic modeling and thermodynamics of crystal violet dye on coconut husk-based activated carbon

Upgrading health reality is the responsibility of all, it is necessary to think about the design of a smart system based on modern technologies to reduce the time and effort exerted on the competent authorities in both health and environmental sectors furthermore making their work environment smart and easy to enable the creativity and innovation as well as to reduce the material costs granted by state of this case “environment.” The process to find a solution for the problem of a triangle as shown in Figure (1) with contradictory heads is a very important and difficult issue in the field of health and environment, these are: (to optimize time utilization, and minimize the human errors, that accompany this human effort as much as possible, and to reduce material costs). Therefore, the idea of Internet technology and the Intelligent Big Data Analysis was developed to design an integrate electronic system of hardware to be developed in different and specific locations to collect information on concentrations that cause air pollution. So, it was invested an idea of Internet of things technology and intelligent data analysis ("Internet of things" and "Intelligent Data Analysis") for the construction of an integrated system of Hardware entities and Software entities placed. The aim of this work is to build a programmable system capable of predicting the pollutant concentrations within the next 48 h called intelligent forecaster of concentrations caused air pollution (IFCsAP) and making the machine the primary source of information after these concentrations are collected and stored in real time. On this basis, we will rely on modern technologies to reach this goal. The proposed design is highly efficient, cost-effective and easy to use and can be deployed in all places (environment with concentrations of air pollution). The main objective of the proposed system is to issue periodic reports (within 48 h of the future) based on the information input from different stations in real time. These reports are issued based on the readings of sensors planted at each station. Each sensor has a measurement of one or more concentrations that cause air pollution. Designed system consists of three basic phases: the construction phase of an integrated electronic circuit consisting of several devices (Modern, LoRa, Waspmate Platform, Arduino, Five sensors).

Intelligent forecaster of concentrations (PM2.5, PM10, NO2, CO, O3, SO2) caused air pollution (IFCsAP)

Multiwall carbon nanotubes (MWCNTs) have been hydrothermally prepared using polyethylene glycol as the carbon source Herein, new MWCNTs composites with high adsorption capacity were prepared and applied as efficient adsorbents for adsorption of maxilon blue dye (GRL) from aqueous solution The morphologies of the MWCNTs were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform-infrared (FT-IR) spectroscopy The adsorption property of maxilon blue (GRL) from aqueous solution onto MWCNTs was studied as a function of mass dosage, pH of solution, initial dye concentration and temperature The adsorption of GRL depends on the initial pH of the solution with maximum uptake occurring at about pH 10 The maximum adsorption capacity of prepared MWCNTs was 2607mg/g Langmuir, Freundlich and Temkin isotherms were applied to fit the experimental data The Freundlich equilibrium isotherm fitted well the experimental data indicating the homogeneity of the adsorbent surface sites Thermodynamics parameters were studied the changes in free energy (ΔG0), enthalpy (ΔH0) and entropy (ΔS0) during adsorption It is noticeable that the adsorption of GRL dye onto MWCNTs was a spontaneous and endothermic process and indicates that the adsorption is favored at high temperature

Aseel M. Aljeboree

Papers

Kinetics and equilibrium study for the adsorption of textile dyes on coconut shell activated carbon

Effect of pH on adsorption and photocatalytic degradation efficiency of different catalysts on removal of methylene blue.

Adsorption isotherm, kinetic modeling and thermodynamics of crystal violet dye on coconut husk-based activated carbon

Intelligent forecaster of concentrations (PM2.5, PM10, NO2, CO, O3, SO2) caused air pollution (IFCsAP)

Preparation, structure and adsorption properties of synthesized multiwall carbon nanotubes for highly effective removal of maxilon blue dye