Published in Applied Water Science
The comparative study on preparation and characterization of modified bentonite and kaolin clay types is aimed at establishment of the ability of these clay types to adsorb pollutants. Its low cost, availability and recovery of clay give it added advantage of an effective adsorbent. The modified clay types were prepared by impregnation using variou...
Published in Water research
We milled granular activated carbons (GACs) that had been used for 0-9 years in water treatment plants and produced carbon particles with different sizes and ages: powdered activated carbons (PAC, median diameter 12-42 μm), superfine PAC (SPAC, 0.9-3.5 μm), and submicron-sized SPAC (SSPAC, 220-290 nm). The fact that SPAC produced from 1-year-old GA...
Published in Research on Chemical Intermediates
In this study, activation of pistachio shell char was investigated by chemical, physical and combined activation experimentally using a TGA instrument and lab scale reactor. The effects of operating conditions such as activation time, temperature and impregnation ratio in the activation methods were studied via the weight loss and iodine number of ...
Published in Adsorption
A new technology of obtaining activated carbons by physical and direct activation of biomass with the use of microwave radiation is described. The effect of activation temperature (700 and 800 °C) and two periods of time (15 and 30 min) on the textural parameters, acid–base character of the surface and sorption properties of activated carbons was t...
Published in Fibers and Polymers
This study reports on the modeling and optimization of the iodine number of activated carbon fiber (ACF), using response surface methodology (RSM) based on the full factorial design (FFD). The individual and the interaction effects of the effective factors such as activation temperature (800, 900 and 1000 °C), time (1, 2 and 3 h), and activator typ...
Published in Journal of the Iranian Chemical Society
In this study, the use of the organic fraction of municipal solid waste as an abundant and low-cost raw material for producing activated carbon was investigated. For this purpose, ZnCl2 was used as a chemical activation agent and the carbonization process took place at 800 °C in N2 atmosphere. Seven sorbents were prepared by chemical activation (py...
Published in Research on Chemical Intermediates
Activated carbons are prepared by chemical activation from pistachio shell with ZnCl2 and KOH. Activation consisted of impregnation of a precursor followed by carbonization in N2 and CO2 at various temperatures, dwell times, heating rates and chemical ratios. Activation with KOH resulted in a lower yield than the ZnCl2. The results suggest KOH as a...
Published in Research on Chemical Intermediates
In this study, activated carbons were prepared by physical activation from pistachio shell with steam in a rotary reactor. Experiments were performed based on the central composite design (CCD) in DX8 software. A quadratic model for prediction of iodine number and a quadratic model for burn-off were developed using CCD in the activation process. Th...
Published in Bioresource technology
Although frequently less toxic than many colorless effluents, colored effluents are generally considered by the public as an indicator of pollution. The present investigation aimed at identifying the effectiveness of a local desert plant characteristic of Southwest Algeria and known as Salsolavermiculata, which was pyrolyzed and treated chemically ...
Se describe un método de espectroscopia IR para determinar de forma rápida el grado de insaturación de grasas y aceites comestibles, basado en la medida de la banda correspondiente al enlace olefínico a 3007 cm-1 Por medio del programa de análisis cuantitativo SNGLE se calcula la absorbancia neta, el área, la 1ª derivada y la 2ª derivada de la band...
