Biochars intended for water filtration: A comparative study with activated carbons of their physicochemical properties and removal efficiency towards neutral and anionic organic pollutants

Chemosphere ◽  
2021 ◽  
pp. 132538
Author(s):  
Michele Castiglioni ◽  
Luca Rivoira ◽  
Irene Ingrando ◽  
Lorenza Meucci ◽  
Rita Binetti ◽  
...  
Keyword(s):  
Comparative Study ◽  
Physicochemical Properties ◽  
Removal Efficiency ◽  
Organic Pollutants ◽  
Activated Carbons ◽  
Water Filtration

SIGNIFICANT EFFECT OF PH ON PHOTOCATALYTIC DEGRADATION OF ORGANIC POLLUTANTS USING SEMICONDUCTOR CATALYSTS

2016 ◽  
Vol 78 (8-3) ◽  
Author(s):  
Nur Farhana Jaafar ◽  
Aishah Abdul Jalil ◽  
Sugeng Triwahyono ◽  
Adnan Ripin ◽  
Mohamad Wijayanuddin Ali
Keyword(s):  
Carbon Dioxide ◽  
Methyl Orange ◽  
Physicochemical Properties ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Ph Value ◽  
Effect Of Ph ◽  
Electrolysis Method ◽  
Ph Range ◽  
Positively Charged

Photocatalytic is one of the inexpensive and non-toxic techniques for degradation of organic pollutants into harmless substances such as water and carbon dioxide. In this study, simple electrolysis method was used in preparation of Ag/TiO2 and α-Fe2O3/HY catalysts. The physicochemical properties of the catalysts were studied using XRD, FTIR, FESEM-EDX and surface area analysis. The pH of solution plays an important role in the photocatalytic degradation of organic pollutants which influences the surface-charge properties of the catalysts. Ag/TiO2 and α-Fe2O3/HY were used as catalyst on degradation of 2-chlorophenol (2-CP) and methyl orange (MO), respectively. The effect of pH on degradation of 2-CP and MO were investigated over a pH range from 2 to 9. Higher degradation of 2-CP and MO were obtained at pH 5 (74%) and pH 2 (80%), respectively. This finding might be explained by the amphoteric performance of the catalyst using point zero charge (pHZPC). The pHZPC for Ag/TiO2 and α-Fe2O3/HY was found to be at pH 6.3 and pH 7.2, respectively. Hence, the activities of the catalysts may have been affected by the existence of a strong electrostatic field between the positively charged catalysts surface and negatively charged 2-CP and MO caused a pH value lower than their pHZPC give greater degradation.

Comparative study of self-organization and physicochemical properties of highly diluted aqueous solutions of phenol bioantioxidants

2012 ◽  
Vol 447 (1) ◽  
pp. 203-206 ◽  
Author(s):  
I. S. Ryzhkina ◽  
Yu. V. Kiseleva ◽  
L. I. Murtazina ◽  
O. A. Mishina ◽  
E. D. Sherman ◽  
...  
Keyword(s):  
Comparative Study ◽  
Physicochemical Properties ◽  
Aqueous Solutions ◽  
Self Organization

scholarly journals Comparative study of the physicochemical properties of male and female flutted pumpkin (Telfairia occidentalis)

2020 ◽  
Vol 6 (2) ◽  
pp. 59-61
Author(s):  
Orole Regina Temitope ◽  
◽  
Orole Olukayode Olugbenga ◽  
Aisoni Japhet Erasmus ◽  
Isyaku Jamilu ◽  
...  
Keyword(s):  
Comparative Study ◽  
Physicochemical Properties ◽  
Male And Female ◽  
Telfairia Occidentalis

scholarly journals A Comparative Study of the Physicochemical Properties of a Virgin Coconut Oil Emulsion and Commercial Food Supplement Emulsions

Molecules ◽  
2014 ◽  
Vol 19 (7) ◽  
pp. 9187-9202 ◽  
Author(s):  
Yih Khor ◽  
Soo Koh ◽  
Kamariah Long ◽  
Shariah Long ◽  
Sharifah Ahmad ◽  
...  
Keyword(s):  
Comparative Study ◽  
Physicochemical Properties ◽  
Coconut Oil ◽  
Food Supplement ◽  
Virgin Coconut Oil ◽  
Oil Emulsion
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