The large production volume combined with the high lignocellulose content makes elephant dung an attractive and underutilized biomass resource, but also presents waste management problems for orphanages. This study explored conversion of into biochars by slow pyrolysis at 500°C recovery phosphate. unmodified biochar (BC500) had a specific surface area (SBET) 62.5 m2×g-1 point zero charge (pHPZC...

Changes in the inherent solid phase and aqueous interfacial properties of magnetite nanoparticles in a Massart type magnetic fluid were investigated. Magnetite nanoparticles were synthesized, purified, dialyzed against 0.001 mol dm–3 HCl and then stored at 4 °C for 6 years. The solid phase transformation of magnetite to maghemite and formation of akageneite shell on the magnetic core, as well a...

A natural zeolite (Z-N), rich in clinoptilolite, was modified (Z-Al) by incorporation of hydrated aluminum oxide (HAlO) for the simultaneous phosphate and ammonium removal. The incorporation of surface hydroxyl groups (≅Al-OH) into the zeolite structure, as active groups for phosphate removal, was characterized by acid-base titrations (pHPZC=4.5±0.2). The phosphate sorption increases from 0.6 m...

This paper presents a systematic study of the surface chemistry, porous texture and adsorptive characteristics of prepared new activated carbon using Persian mesquite grain. Several techniques and methodologies such as, proximate analysis, N2 adsorption–desorption isotherms, scanning electron microscope (SEM), Fourier transform infrared spectroscopy(FT-IR), X-ray Diffraction (XRD), X-ray photoe...

Carbamazepine (CBZ) is the most frequently detected pharmaceutical residues in aquatic environments effluent by wastewater treatment plants. Batch and column experiments were conducted to evaluate removal of CBZ from ultra-pure water plant (WWTP) using raw zeolitic tuff (RZT) surfactant modified zeolite (SMZ). Point zero net charge (pHpzc), X-ray diffraction (XRD), fluorescence (XRF), Fourier T...

The adsorption of nucleotides on the surface nanocrystalline cerium dioxide (pHpzc = 6.3) in NaCl solutions was investigated using multi-batch experiments over a wide range pH. obtained results were interpreted as formation outer and inner sphere complexes with participation phosphate moieties. Basic Stern complexation model applied to obtain quantitative equilibrium reaction constants.

The present research shows the results obtained from biosorption process of Pb, using coffee pulp as a biosorbent in synthetic waters. To do this, lignin and cellulose content percentage removal Pb2+ ions was determined; additionally, sorption’s optimal variables, such optimum pH, point zero charge (pHpzc), kinetics adsorption isotherm, were determined. A comparison made with other by-products ...

NiFe2O4/SiO2/NiO magnetic was successfully synthesized using NiFe2O4, SiO2, and NiO as the core, interlayer, shell, respectively. under UV light irradiation used for photocatalytic degradation of methyl orange dye with different pH, catalyst dose, initial concentration. This composite characterized by X-ray Diffraction (XRD), Fourier Transform Infra-Red (FTIR), Scanning Electron Microscopy-Elec...

this paper presents a systematic study of the surface chemistry, porous texture and adsorptive characteristics of prepared new activated carbon using persian mesquite grain. several techniques and methodologies such as, proximate analysis, n2 adsorption–desorption isotherms, scanning electron microscope (sem), fourier transform infrared spectroscopy(ft-ir), x-ray diffraction (xrd), x-ray photoe...

A mesoporous activated carbon (MAC) was synthesized from waste tires rubber (WTR) via a one-step ZnCl2/FeCl3 activation route, and the typical sample implemented in eliminating Eriochrome Black-T (EBT) dye Cr(VI) their synthetic effluents. The impact of impregnation ratio ZnCl2/FeCl3, temperature, period optimized . best AC created at 750°C for 60 minutes using 2:1 ZnCl2/FeCl3:WTR ratio. This a...