Black cumin seed pulp (C), as well biochar (CC) produced via pyrolysis of black were used to remove methylene violet 2B (MV) and basic yellow 28 (BY28) from aqueous solution. Adsorption isotherms kinetics applied at 10, 25, 35 °C. The adsorption on the surface was exothermic; heat values lower than 0. capacities BY28-C, BY28-CC, MV-C, MV-CC 212.8, 625, 164, 909 mg g-1 25 °C, respectively. data ...

The close link between the roughness of a surface and its adsorptive properties in Cerofolini’s model yields, with an adequate choice adsorption energy, well-known Dubinin-Radushkevich or Freundlich isotherms. Assuming fractal behavior concerning both energetic geometric heterogeneities described by power-law expressions dimensions, paper will develop some Using our theoretical approach, isothe...

Polyethersulfone-sulfonated polyethersulfone (PES-SPES)/NaY zeolite/nylon sandwich structure membranes were prepared and used to adsorb Cu2+ from water. The adsorption kinetics, isotherm, dynamic experiment, reusability discussed. experimental data showed that the Langmuir isotherm model, Dubinin–Radushkevich (D-R) pseudo-first-order kinetic model can well represent of on membrane, indicating a...

Bottom ash, a waste of thermal power plants, and deoiled soya, an agricultural waste material, were employed for successful removal and recovery of hazardous phenol red dye from wastewaters. The adsorption characteristics and operational parameters were determined by monitoring different parameters such as effect of pH, effect of concentration of the dye, amount of adsorbents, contact time, and...

Nano-hydroxyapatite and its modification, hydroxyapatite with the excess of phosphorus (P-HAP) and hydroxyapatite with the carbon ions built into the structure (C-HAP), were prepared by the wet method. They were studied by means of XRD, accelerated surface area and porosimetry (ASAP), and SEM. The size of crystallites computed using the Scherrer method was nano-hydroxyapatite (HAP) = 20 nm; P-H...

In this study Ceramium virgatum has been characterized and used for the removal of cadmium and lead from aqueous solutions. The effect of pH, adsorbent dosage, contact time and temperature on adsorption process was studied in batch experiments. Langmuir and Freundlich models were applied to describe the biosorption isotherm of the metal ions by C. virgatum biomass. The adsorption data can be we...

The recent letter to the editor by Bickford et al. [1] discusses the uses of the CO2 affinity coefficient in microporous carbons, bCO2 , and its physical significance. The paper points out the lack of having absolute b values and attempts to give answer to the question of the suitability of the value of bCO2 = 0.35 in microporous carbons. The authors conclude that this cannot be considered a ‘‘...

Adsorption equilibrium and kinetics on lignocellulosic base adsorbents from oil palm bagasse (OPB) yam peels (YP) were studied for the removal of hexavalent chromium present in aqueous solution, a batch system, evaluating effect temperature, adsorbent dose particle size process. Isotherms fitted to Langmuir, Freundlich Dubinin–Radushkevich isothermal models. Kinetic data adjusted pseudo-first-o...

The study was carried to evaluate the ability of defatted seed Adansonia digitata (DFSE) remove methylene blue dye from contaminated water. optimum parameters such as contact time, particle size, absorbent dose, initial concentration, and pH were investigated by performing batch experiments models. kinetics isotherms adsorption evaluated varying concentration using parameters. time is 90 min re...

Bu çalışmada, sulu çözeltilerden Cu2+ iyonlarını uzaklaştırmak amacıyla atık portakal kabuğu (APK) değerlendirildi. Portakal kabuğunun karakterizasyonu, yüzey morfolojisi için taramalı elektron mikroskobu-enerji dağılım spektroskopisi (SEM-EDS) ve fonksiyonel grupları Fourier dönüşümü kızılötesi (FT-IR) ile incelendi. Farklı sıcaklıklarda bulunan kinetik değerler yalancı birinci derece, ikinci ...