Adsorption isotherms of fatty acids on rice hull ash in a model system

1994 ◽  
Vol 71 (12) ◽  
pp. 1363-1366 ◽  
Author(s):  
Muhammad Idiris Saleh ◽  
Farook Adam
Keyword(s):  
Fatty Acids ◽  
Adsorption Isotherms ◽  
Model System ◽  
Rice Hull ◽  
Rice Hull Ash

Adsorption of soy oil free fatty acids by rice hull ash

1990 ◽  
Vol 67 (1) ◽  
pp. 15-17 ◽  
Author(s):  
Andrew Proctor ◽  
Sevugan Palaniappan
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Rice Hull ◽  
Soy Oil ◽  
Rice Hull Ash

Water filtration using rice hull ash

Waterlines ◽  
1983 ◽  
Vol 2 (2) ◽  
pp. 21-23 ◽  
Author(s):  
Barnes ◽  
Mampitiyarachichi
Keyword(s):  
Water Filtration ◽  
Rice Hull ◽  
Rice Hull Ash

scholarly journals Solid Reactant-Based Geopolymers from Rice Hull Ash and Sodium Aluminate

2016 ◽  
Vol 8 (6) ◽  
pp. 2131-2140 ◽  
Author(s):  
Ailar Hajimohammadi ◽  
Jannie S. J. van Deventer
Keyword(s):  
Sodium Aluminate ◽  
Rice Hull ◽  
Rice Hull Ash ◽  
Solid Reactant

Preparation of Amorphous Nanosilica from Philippine Waste Rice Hull via Acid Precipitation Method

2016 ◽  
Vol 864 ◽  
pp. 112-116
Author(s):  
Rinlee Butch M. Cervera ◽  
Emie A. Salamangkit-Mirasol
Keyword(s):  
Electron Microscopy ◽  
Low Cost ◽  
Agricultural Waste ◽  
Acid Precipitation ◽  
Particle Size Analysis ◽  
Precipitation Method ◽  
Rice Hull ◽  
Size Analysis ◽  
Rice Hull Ash ◽  
Transmission Electron

Rice hull or rice husk (RH) is an agricultural waste obtained from milling rice grains. Since RH has no commercial value and is difficult to use in agriculture, its volume is often reduced through open field burning which is an environmental hazard. In this study, amorphous nanosilica from Philippine waste RH was prepared via acid precipitation method. The synthesized samples were fully characterized for its microstructural properties. X-ray diffraction pattern reveals that the structure of the prepared sample is amorphous in nature while Fourier transform infrared spectrum showed the different vibration bands of the synthesized sample. Scanning electron microscopy (SEM) and particle size analysis (PSA) confirmed the presence of agglomerated silica particles. On the other hand, transmission electron microscopy (TEM) revealed an amorphous sample with grain sizes of about 5 to 20 nanometer range and has about 95 % purity according to EDS analyses. The elemental mapping also suggests that leaching of rice hull ash effectively removed the metallic impurity such as potassium element in the material. Hence, amorphous nanosilica was successfully prepared via a low-cost acid precipitation method from Philippine waste rice hull.

Performance and Quality in Old Laying Hens Fed Dietary Silicon Extracted from Rice Hull Ash

2018 ◽  
Vol 13 (2) ◽  
pp. 175-179
Author(s):  
Tossaporn Incharoen ◽  
Pichit Wonnakom ◽  
Asad Ali Khaskheli
Keyword(s):  
Laying Hens ◽  
Rice Hull ◽  
Rice Hull Ash

scholarly journals Pengaruh Keasaman Medium dan Imobilisasi Gugus Organik pada Karakter Silika Gel dari Abu Sekam Padi

2005 ◽  
Vol 8 (3) ◽  
pp. 74-80
Author(s):  
Sriyanti Sriyanti ◽  
Taslimah Taslimah ◽  
Nuryono Nuryono ◽  
Narsito Narsito
Keyword(s):  
Sodium Silicate ◽  
Silica Gel ◽  
Sodium Silicate Solution ◽  
Thiol Group ◽  
Silicate Solution ◽  
Rice Hull ◽  
Amino Group ◽  
Rice Hull Ash ◽  
Host Matrix ◽  
Medium Acidity

Silica gel is well known as a material that may be used as adsorbent, host matrix for catalyst, etc. Hence, synthesis of silica gel from rice hull ash has been done by evaluation of the effect of medium acidity and organic group immobilized in the snythesis of silica gel.Synthesis of silica gel was done by adding sodium silicate solution from rice hull ash to hydrochloric acid until pH 3, 5 and 7. Immobilization of thiol group and amino group in silica was done by adding 3-mercaptopropyltrimethoxysilane or 3-aminopropyl-trimethoxysilane to sodium silicate solution and hydrochloride acid solution until pH: 7. The products were characterized by X-ray deffractometer and FTIR Spectroscopy.Results showed that porousitas of silica increased with increasing medium acidity ( decreasing pH medium).Immobilization thiol or amino group in silica added a functional group on silica but did not destroy primary structure of silica gel.Key Words: Silica Gel, Rice Hull Ash, 3-mercaptopropyltrimethoxysilane, 3-aminopropyl-trimethoxysilane.

Sign in / Sign up

Export Citation Format

Share Document