TiO2/carbon composites were synthesized by hydrothermal carbonization, using titanium isopropoxide and glucose precursor solution to obtain with Ti/C molar ratios ranging from 0.05 0.30. Characterization of obtained was performed thermogravimetric analysis, scanning electron microscopy, nitrogen adsorption–desorption isotherms, X-ray diffraction, UV–Vis diffuse reflectance spectroscopy Fourier transform infrared spectroscopy. The possibility as photocatalysts for UV assisted degradation...

The surface characteristics of different carbon materials: activated carbon, felt, glassy and a porous monolith were investigated. specific area was examined by the BET method with N2 adsorption, amount type oxygen groups Boehm titration as well temperature-programmed desorption (TPD). By comparing results obtained using analysis those TPD method, it found that number not proportional to area. total groups, TPD, is higher than Boehm?s for samples. inconsistencies between these originate from...

In this study, the possibility of using modified potato starch, with nitrogen-containing chemical agents (melamine, cysteine, and histidine) as green adsorbents for removing pharmaceuticals pesticides from water has been investigated. The influence additional modification amino-starch clay diatomaceous earth was examined. effect applied on structural, surface, morphological properties determined by FTIR, XRD, SEM analysis, while adsorption were through effectiveness prepared materials to...

As new technologies are developed, the demand for rare earth elements (REEs) has increased, despite limited awareness of their significant impact on people and environment. In this study, waste fly ash was used as a precursor to synthesize inorganic aluminosilicate polymers by adding an activator alumina silica compounds ash. Due structure adsorption potential, application removal selected REEs (Gd3+, Y3+, Sc3+) from water been investigated. A decrease in intensity quartz peak at 2θ 26.6°...

The current study included the investigation of several metals and their distribution in urban soils from parks green areas city Belgrade. were sampled January February 2008. concentrations Cd, Co, Cu, Pb, Mn Zn measured, as well pH values organic matter contents. obtained results showed that there was a significant level contamination some samples, especially with lead, it most probably caused by anthropogenic activities, mostly traffic. compared National legislation Netherlands standards....

Due to industrial growth and its impact on the environment, increasing amount of waste requires a comprehensive approach aligned with principles sustainable development. The main goals are not only preserve natural resources but also encourage innovation in reuse materials. In an attempt reduce problems regarding disposal wastewater treatment textile industry, fibrous was used as starting material obtain carbon adsorbents for removal pollutants from wastewater. Waste cotton mixed yarns,...

Research on chalcopyrite leaching represents a great challenge, given its importance as one of the most abundant copper minerals and significant role in global extraction. This study aimed to evaluate effects different parameters by hydrogen peroxide strong oxidizing reagent sulfuric acid solution. A series tests were carried out investigate effect solid/liquid ratio, stirring speed, temperature, oxidant concentrations, lixiviant dosing method extraction from concentrate. The catalytic...

The capacity of carbon monolith for pesticide removal from water, and the mechanism interaction with surface were examined. Different samples obtained by varying carbonization activation parameters. In order to examine role oxygen groups in adsorption, was functionalized chemical treatment HNO3, H2O2 KOH. properties investigated BET area, pore size distribution temperature-programmed desorption. Adsorption pesticides aqueous solution onto activated studied using five belonging different...

In an attempt to reuse fibrous textile waste and, at the same time, address dye pollution in wastewater, cotton-based yarn was utilized as a cheap and sustainable adsorbent, well row material for carbon adsorbent production. Unmodified adsorbents were used removal from water. Cotton cotton/polyester samples underwent thermal modification through carbonization followed by chemical activation with KOH. Various techniques, including scanning electron microscopy, Fourier transform infrared...

A carbon monolith with a silver coating was prepared and its antimicrobial behaviour in flow system examined. The functional groups on the surface of were determined by temperature-programmed desorption Boehm's method, point zero charge mass titration. specific area examined N2 adsorption using Brunauer, Emmett Teller (BET) method. As test for activity, deposition from an aqueous solution salt used. morphology structure coatings characterized scanning electron microscopy x-ray diffraction....

Waste hemp and flax fibers, cotton cotton/polyester yarns, available in large quantities from the textile industry, were used as cheap effective sorbents for removal of methylene blue wastewater. fibers yarns characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, iodine sorption, water retention, point zero charge, well through determination crystallinity index degree surface crystallinity. The adsorption was optimized examining influence contact time,...