Search Results - "Adsorption isotherm"

In this study, we evaluated the performance of three related isotherm models—the Dubinin–Radushkevich (DR), Dubinin–Radushkevich–Misra (DRM), and Dubinin–Astakhov (DA) equations—for describing the adsorption of antibiotic contaminants from water, including tetracycline, metronidazole, ofloxacin, cip...

Full description

A batch adsorption system was applied to study the adsorption of methylene blue from aqueous solution by Iraqi bentonite and treated bentonite with different amount of zinc oxide (ZnO). The adsorption capacities of methylene blue onto bentonite were evaluated. The equilibrium between liquid and soli...

Full description

The removal of nickel from synthetic wastewater through adsorption using activated carbon derived from tamarind seeds was investigated. The study also compared two carbonization methods: traditional and hydrothermal. The results indicated that activated carbon synthesized via the hydrothermal method...

Full description

Strong adsorption is a requisite surface property for long time protection of inhibitors. The present research investigates the potential of the anchoring sites and water expelling characteristics of rubber leave extract on mild steel for corrosion protection in HCl environment. Using rubber leave p...

Full description

This study investigated the enhanced adsorption capacity of a silver nanoparticle (AgNPs)-incorporated tamarind seed activated carbon nanocomposite (Ag/TSAC) for the elimination of methyl orange (MO) from aqueous solutions. The nanocomposite was analyzed using TGA, SEM, FTIR, and BET, revealing a me...

Full description

The widespread presence of BPA in water bodies poses significant environmental and health concerns, highlighting the need for sustainable and efficient removal technologies. This study presents an innovative approach for BPA remediation using biochar derived from king coconut shells—a readily availa...

Full description

This paper reports on preliminary qualitative evaluation of relationship between color change and water activity (aw) of date (Phoenix dactylifera L., var. Mech-Degla) fruit tablets (DFTs) as natural supplement, in view to optimize their storage conditions. Eight types of DFTs were obtained, accordi...

Full description

The adsorption behavior of Bismarck brown (BB) dye from aqueous solutions onto graphene oxide GO and graphene oxide-g-poly (n-butyl methacrylate-co-methacrylic acid) GO-g-pBCM as adsorbents was investigated. The prepared GO and GO-g-pBCM were characterized by Fourier transform infrared spectroscopy...

Full description

        In this paper, snail shell powder was used an adsorbent for safranine dye due to its low cost, high efficiency and high adsorption capacity. Experiments were conducted at a temperature of 298 K to find out the effect of pH, concentration, weight, ionic strength and equilibrium time. Also, t...

Full description

В работе исследована сорбция фенола из водных растворов кремний- и углеродсодержащими материалами, полученными в различных условиях из рисовой шелухи и соломы. Показано, что сорбционная активность по фенолу для образов, полученных пиролизом рисовой шелухи в промышленных условиях, составила 39%. Крем...

Full description

Abstrak Adsorpsi zat warna basic red 18 dan direct black 38 dengan adsorben dari serat pinang telah diteliti. Morfologi dan gugus fungsi permukaan serat pinang dianalisa dengan Fourier transform infrared spectroscopy (FT-IR) dan scanning electron microscopy (SEM). Penelitian ini fokus pada mekanism...

Full description

Ceramic filters are widely recognized for their effectiveness in removing microorganisms and pathogens from drinking water. However, their ability to eliminate chemical pollutants through adsorption remains underexplored. This study investigates the adsorption of methylene blue (MB) onto ceramic fil...

Full description

This study concerns the investigation of the sorption and desorption phenomena of the organic dye methylene blue (MB) on three different marine sediments and non-living biomass of the seagrass species <i>Posidonia oceanica</i>. All tested adsorbents were of natural origin and were collec...

Full description

Highly effective techniques, such as adsorption, play an important role in removing hazardous pollutants from wastewater. Spinel ferrite nanoparticles have proven to be effective adsorbents for removing dyes from wastewater. Thus, the preparation, characterization, and application of (Co0.5−xZn0.5−x...

Full description

The laws of zinc and copper absorption by agrarian and carbonate soils in the area of Cherepovets Steel Mill are described. Sorption isotherms demonstrate high affinity of PPK of the studied soils to zinc and copper. Approximation of experimentally obtained isotherms by three methods: Freindlich, Le...

Full description

This study evaluates the removal of Acid Red 18 (AR 18) dye from aqueous medium using an adsorbent developed from Carica papaya peel. The adsorbent was prepared by carbonization at 500oC followed by activation with NaOH solution. Moisture content, ash content and volatile matter of the adsorbent wer...

Full description

For various adsorbents, especially nanoporous, there is an applicability problem of the Brunauer-Emmett-Teller (BET) method using nitrogen as a probe adsorbate. Therefore, the nitrogen adsorption (a(p/p0)) isotherms in several pressure ranges of the BET method at p/p0 = 0.05–0.3, 0.06–0.22, and narr...

Full description

In this study, Yogurt was dried and milled, then shaked with distilled water to remove the soluble materials, then again dried and milled. Batch experiments were carried out to remove hexavalent chromium from aqueous solutions. Different parameters were optimized such as amount of adsorbent, treatme...

Full description

Heavy metal contamination in water systems remains a pressing environmental and public health issue due to the persistence and toxicity of metals such as Pb2+ , Cd2+, Cr6+, and As3+. Increasing global attention on environmental protection has spurred the scientific community to focus on developing s...

Full description

The subject of this research involves studying adsorption to removal herbicide Atlantis WG from aqueous solutions by bentonite clay. The equilibrium concentration have been determined spectra photometry by using UV-Vis spectrophotometer. The experimental equilibrium sorption data were analyzed by...

Full description