Über die Adsorption in Lösungen

Industrial, agricultural, and domestic activities of humans have affected the environmental system, resulting in drastic problems such as global warming and the generation of wastewater containing high levels of pollutants. As water of good quality is a precious commodity and available in limited amounts, it has become highly imperative to treat wastewater for removal of pollutants. In addition, the rapid modernization of society has also led to the generation of huge amount of materials of little value that have no fruitful use. Such materials are generally considered as waste, and their disposal is a problem. Also, there are some materials that are available in nature that have little or no use. The utilization of all such materials as low-cost adsorbents for the treatment of wastewater may make them of some value. An effort has been made to give a brief idea of an approach to wastewater treatment, particularly discussing and highlighting in brief the low-cost alternative adsorbents with a view to utilizing these waste/low-cost materials.

Low-Cost Adsorbents: Growing Approach to Wastewater Treatment—a Review

Adsorption isotherm models: Classification, physical meaning, application and solving method

Dyes adsorption using clay and modified clay: A review

Graphene oxide-supported polyaniline (PANI@GO) composites were synthesized by chemical oxidation and were characterized by SEM, Raman and FT-IR spectroscopy, TGA, potentiometric titrations, and XPS. The characterization indicated that PANI can be grafted onto the surface of GO nanosheets successfully. The sorption of U(VI), Eu(III), Sr(II), and Cs(I) from aqueous solutions as a function of pH and initial concentration on the PANI@GO composites was investigated. The maximum sorption capacities of U(VI), Eu(III), Sr(II), and Cs(I) on the PANI@GO composites at pH 3.0 and T = 298 K calculated from the Langmuir model were 1.03, 1.65, 1.68, and 1.39 mmol·g–1, respectively. According to the XPS analysis of the PANI@GO composites before and after Eu(III) desorption, nitrogen- and oxygen-containing functional groups on the surface of PANI@GO composites were responsible for radionuclide sorption, and that radionuclides can hardly be extracted from the nitrogen-containing functional groups. Therefore, the chemical a...

Highly efficient enrichment of radionuclides on graphene oxide-supported polyaniline

Sorption of lanthanum and erbium from aqueous solution by activated carbon prepared from rice husk.

Removal of mercury(II) from wastewater using camel bone charcoal

Removal of bromophenol blue dye from industrial waste water by synthesizing polymer-clay composite

This article attempt to synthesis titanium dioxide (TiO2) doped zinc oxide (ZnO) composite via Pulsed Laser Ablation in Liquids (PLAL) and study its antibacterial properties. The structure, optical, morphological of the prepared composite have been investigated via various technique. FT-IR results confirm existence of TiO2 doped ZnO. XRD measurements approved the enhanced crystallinity ZnO after doped by TiO2 via PLAL technique. The optical transmittance was enhanced from 78.6% of pure ZnO to 92.3% for TiO2 doped ZnO. TEM images of ZnO showed an obvious elongated rod-like shapes that were rectangular or hexagonal and spherical particles. Moreover, the cell viability has been studied for the papered pure ZnO and TiO2 doped ZnO. The minimum cell viability ratio was about 81.4 ± 4.2% for pure ZnO and was increased to 91.6 ± 5.1% for TiO2 doped ZnO. The antibacterial activity of the samples that measured via MIZ approved that the TiO2 doped ZnO make a raise in the activity index. It was suggested that TiO2 doped ZnO can be used in many antimicrobial application.

Nasser S. Awwad

Papers

Sorption of lanthanum and erbium from aqueous solution by activated carbon prepared from rice husk.

Removal of mercury(II) from wastewater using camel bone charcoal

Removal of bromophenol blue dye from industrial waste water by synthesizing polymer-clay composite

Antibacterial activity of TiO2 doped ZnO composite synthesized via laser ablation route for antimicrobial application

Treatment of phosphogypsum waste produced from phosphate ore processing