scholarly journals Sorption Isotherm Model of Zinc (II) onto Thermally Treated Rice Husk

2016 ◽  
Vol 32 (5) ◽  
pp. 2797-2801
Author(s):  
Ahmad Tarmizi ◽  
Keat Ong ◽  
Wan Yunus ◽  
Anwar Fitrianto ◽  
Mohd Jabit ◽  
...  
Keyword(s):  
Sorption Isotherm ◽  
Rice Husk ◽  
Isotherm Model ◽  
Thermally Treated

scholarly journals Adsorption Properties of Thermally Treated Rice Husk for Removal of Sulfamethazine Antibiotic from Pharmaceutical Wastewater

2020 ◽  
pp. 84-92
Author(s):  
Davoud Balarak ◽  
Fatemeh Bandani ◽  
Zaccheus Shehu ◽  
Nehad J. Ahmed
Keyword(s):  
Rice Husk ◽  
Langmuir Isotherm ◽  
Chemical Properties ◽  
Freundlich Isotherm ◽  
Isotherm Model ◽  
Sorption Data ◽  
Equilibrium Sorption ◽  
Langmuir Isotherm Model ◽  
Sorption Intensity ◽  
Thermally Treated

Equilibrium sorption of the Thermally Treated Rice Husk (TTRH) for Sulfamethazine (SMT) adsorption was studied. The Physico-chemical properties of the modified rice husk were determined. The equilibrium sorption data were fitted into Langmuir, Freundlich and Dubinin–Radushkevich isotherms. Of the three adsorption isotherm, the R2 value of Langmuir isotherm model was the highest. Also compared to other isotherms the AARE coefficient for the Langmuir isotherm is low, which indicates favorable sorption. The maximum monolayer coverage (qm) from Langmuir isotherm model was determined to be 19.11 mg/g, the separation factor indicating a favorable sorption experiment is 0.446. Also from Freundlich Isotherm model, the sorption intensity (n) which indicates favorable sorption and the correlation value are 1.84 and 3.79 respectively. The mean free energy was estimated from Dubinin–Radushkevich isotherm model to be 9.18 KJ/mol which clearly proved that the adsorption experiment followed a physical process.

Optimum Sorption Isotherm by Linear and Nonlinear Methods for Safranin onto Alkali-Treated Rice Husk

2011 ◽  
Vol 15 (2) ◽  
pp. 77-89 ◽  
Author(s):  
Shamik Chowdhury ◽  
Rahul Misra ◽  
Praveen Kushwaha ◽  
Papita Das
Keyword(s):  
Sorption Isotherm ◽  
Rice Husk ◽  
Nonlinear Methods ◽  
Linear And Nonlinear

Sorption isotherm for safranin onto rice husk: Comparison of linear and non-linear methods

2007 ◽  
Vol 72 (1) ◽  
pp. 130-133 ◽  
Author(s):  
K. Vasanth Kumar ◽  
S. Sivanesan
Keyword(s):  
Sorption Isotherm ◽  
Rice Husk ◽  
Non Linear

A water sorption isotherm model for ionomer membranes with cluster morphologies

1985 ◽  
Vol 18 (3) ◽  
pp. 483-491 ◽  
Author(s):  
Kenneth A. Mauritz ◽  
C. E. Rogers
Keyword(s):  
Sorption Isotherm ◽  
Water Sorption ◽  
Isotherm Model ◽  
Ionomer Membranes ◽  
Water Sorption Isotherm

scholarly journals Sorption kinetics of Zn (II) ion by thermally treated rice husk

2015 ◽  
Author(s):  
K. K. Ong ◽  
A. F. A. Tarmizi ◽  
Wan Yunus W. M. Z. ◽  
K. M. Safidin ◽  
A. Fitrianto ◽  
...  
Keyword(s):  
Rice Husk ◽  
Sorption Kinetics ◽  
Kinetics Of ◽  
Thermally Treated

Application of the GAB Sorption Isotherm Model to Klinki Pine (Araucaria klinkii Lauterb.)

Holzforschung ◽  
2000 ◽  
Vol 54 (6) ◽  
pp. 661-663 ◽  
Author(s):  
I.D. Hartley
Keyword(s):  
Sorption Isotherm ◽  
Isotherm Model

scholarly journals Preparation and characterization of rice husk adsorbents for phenol removal from aqueous systems

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0243540
Author(s):  
Samah Babiker Daffalla ◽  
Hilmi Mukhtar ◽  
Maizatul Shima Shaharun
Keyword(s):  
Aqueous Solutions ◽  
Surface Area ◽  
Rice Husk ◽  
Physicochemical Characterization ◽  
Renewable Resource ◽  
Pollutant Removal ◽  
Phenol Removal ◽  
Chemically Treated ◽  
Thermally Treated

Rice husk is a base adsorbent for pollutant removal. It is a cost-effective material and a renewable resource. This study provides the physicochemical characterization of chemically and thermally treated rice husk adsorbents for phenol removal from aqueous solutions. We revealed new functional groups on rice husk adsorbents by Fourier transform infrared spectroscopy, and observed major changes in the pore structure (from macro-mesopores to micro-mesopores) of the developed rice husk adsorbents using scanning electron microscopy. Additionally, we studied their surface area and pore size distribution, and found a greater enhancement of the morphological structure of the thermally treated rice husk compared with that chemically treated. Thermally treated adsorbents presented a higher surface area (24–201 m2.g-1) than those chemically treated (3.2 m2.g-1). The thermal and chemical modifications of rice husk resulted in phenol removal efficiencies of 36%–64% and 28%, respectively. Thus, we recommend using thermally treated rice husk as a promising adsorbent for phenol removal from aqueous solutions.

Application of rice husk biochar and thermally treated low silica rice husk ash to improve physical properties of cement mortar

2019 ◽  
Vol 104 ◽  
pp. 102376 ◽  
Author(s):  
Shravan Muthukrishnan ◽  
Souradeep Gupta ◽  
Harn Wei Kua
Keyword(s):  
Physical Properties ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Cement Mortar ◽  
Rice Husk Biochar ◽  
Thermally Treated

scholarly journals Factorial Design Analysis of Zn(II) Ions Adsorption on Thermally Treated Rice Husk

2015 ◽  
Vol 10 (1) ◽  
pp. 121
Author(s):  
Keat Khim Ong ◽  
A. T. Ahmad Farhan ◽  
W. M. Z. Wan Yunus ◽  
Ahmad Mujahid Ahmad Zaidi ◽  
M. L. Jabit ◽  
...  
Keyword(s):  
Metal Concentration ◽  
Rice Husk ◽  
Contact Time ◽  
Heating Temperature ◽  
Ion Concentration ◽  
Adsorbent Dosage ◽  
Percentage Removal ◽  
Student’S T ◽  
Significant Factors ◽  
Thermally Treated

<p class="zhengwen"><span lang="EN-GB">Adsorption of Zn(II) ions from aqueous solutions by thermally treated rice husk was investigated using factorial experimental design to study effects of heating temperature and period of rice husk, pH, initial Zn(II) ion concentration, adsorption temperature and contact time, and adsorbent dosage. Main and interaction effects of these factors were analyzed using statistical techniques and the results were analyzed statistically using the Student’s t-analysis and analysis of variance which were used to determine significant factors that affect the percentage removal of Zn(II). These significant factors were heating temperature of rice husk, pH, initial metal concentration, contact time, and adsorbent dosage. The interaction between two different effects also affects the percentage removal of Zn(II) ions. These include the interactions between heating temperature of rice husk and initial metal concentration, pH and initial metal concentration, and pH and the adsorbent dosage.</span></p>

Partial replacement of metakaolin with thermally treated rice husk ash in metakaolin-based geopolymer

2019 ◽  
Vol 221 ◽  
pp. 527-538 ◽  
Author(s):  
Huajun Zhu ◽  
Guangwei Liang ◽  
Zuhua Zhang ◽  
Qisheng Wu ◽  
Jianzhou Du
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Partial Replacement ◽  
Thermally Treated
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