نتایج جستجو برای: phpzc

تعداد نتایج: 131  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم پایه 1391

در این کار تحقیقاتی به منظور حذف آلاینده های رنگی از محلول های آبی، از غلاف گل آذین خرما به عنوان ماده اولیه فراوان، ارزان و در دسترس برای تهیه کربن فعال پودری استفاده شده است. فسفریک اسید به عنوان ماده فعالساز و مایکروویو به عنوان منبع گرمایی مورد استفاده قرار گرفتند. به کارگیری تابش دهی مایکروویو به جای گرمادهی با کوره سبب کاهش زمان تولید، صرفه جویی در مصرف انرژی و گرمادهی یکنواخت نمونه شد. ب...

Journal: :Sustainable chemistry 2023

The current study examines the feasibility of recycling artificially polluted wastewater that contains crystal violet (CV) organic dye by using Azadirachta indica sawdust (AISD) waste as a highly cost-effective adsorbent. Different analytical techniques, viz., SEM/EDX, TEM/SAED, BET, XRD, TGA-DTG, point zero charge (pHpzc), and FTIR, were used to characterize Studies batch adsorption performed ...

Journal: :Oriental journal of chemistry 2022

Toxic heavy metal ions are extremely harmful to living things and the environment due their toxicity, carcinogenicity, ability collect in nature, capacity contaminate surface ground water. The focus of this research was develop an appropriate low cost adsorbent for removal from aqueous solutions. activated carbon prepared avocado kernels characterized by using XRD, FTIR, pHPZC. From XRD spectra...

Journal: :Water conservation science and engineering 2021

Despite their extensive and decade-long application in wastewater treatment, activated carbon remains one of the most viable adsorbents, with substantive practical application, due to high pollutant binding capacity. In this study, commercially available charcoal was applied uptake aqueous cadmium [Cd(II)] ion. The effect some process variables on Cd (II) investigated via batch mode. Furthermor...

Journal: :Water 2023

The present study aimed to investigate the adsorption capacity of two anionic dyes, namely, Congored (CR) and Coralene Dark Red2B (DR), onto prepared alginate (Alg) chitosan(Cs) biopolymer films. biopolymers were combined at different mass ratios using a “solvent-cast” process incorporate their unique properties evaluate effectiveness in removing dyes. All samples characterized by means Fourier...

Journal: :Andean Geology 2021

The physic and chemical characterization of the bentonite clay from Chiqui Gómez deposit, central Cuba, (Cuban clay) shows that it is mainly constituted by sodium montmorillonite (>90%), with a structural formula for one-layer unit determined as (Na3.99Al0.01)(Al1.11Fe3+0.49Mg0.18Ti0.07)(Ca0.24Na0.15K0.01)O10(OH)2. Cuban has specific surface area 80 m2g-1, pore volume about 0.0776 cm3g-1, 61...

Journal: :Bulletin of The Chemical Society of Ethiopia 2022

ABSTRACT. The utilization of a metal organic framework (ZIF-8) modified by Fe3O4 nanoparticles was used to accomplish adsorption Rhodamine B (RB) from aqueous solutions. SEM, XRD, IR, and BET analyses were all characterize the composite (Fe3O4@ZIF-8). surface area this adsorbent 478.4 m2/g. X-Ray diffraction spectroscopy detect modification utilizing electron microscopy (SEM) scanning with 48 n...

Journal: :Sustainability 2023

Phosphonic acid functionalization of gellan gum and chitosan biopolymers was successfully performed. In the first step, sorption investigated using La(III) ions before testing for recovery rare earth elements (REEs) from pretreated industrial acidic leachate. The sorbent characterized by Fourier-transform infrared (FTIR), scanning electron microscopy with energy dispersive X-ray analysis (SEM-E...

Journal: :iranian journal of toxicology 0
راضیه زندی پاک raziyeh zandi pak msc of environmental sciences, young researchers & elite club, hamedan branch, islamic azad university, hamedan, iran. سهیل سبحان اردکانی soheil sobhan ardakani department of the environment, college of basic sciences, hamedan branch, islamic azad university, hamedan, iran.

background: among different pollutants released into the environment, dyes are considered as one of the most dangerous contaminants. in recent years, magnetic nanomaterials have attracted much attention for their dye removal capacity. the aim of this study was to explore the adsorption kinetics of an anionic dye (reactive orange 13 (ro)) by nife2o4 nanoparticles (nife2o4 nps) under various cond...

Journal: :Applied sciences 2021

The necessity of decontaminating effluents for the dual purpose environmental beneficiation and valorization low-grade resources is driving development new sorbents. functionalization biopolymers a promising strategy improving sorption performance. Incorporating magnetic micro-particles offers an opportunity facilitated recovery spent micron-size sorbent. Combining facilities biopolymer represe...

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