التفاصيل البيبلوغرافية
| العنوان: |
BIOSORPTION POTENTIALS OF ACID MODIFIED Saccharum bengalense FOR REMOVAL OF METHYL VIOLET FROM AQUEOUS SOLUTIONS. |
| العنوان البديل: |
BIOSORPCIONI POTENCIJALI KISELINSKI MODIFIKOVANE Saccharum bengalense ZA UKLANJANJE METIL-VIOLETA IZ VODENIH RASTVORA. |
| المؤلفون: |
DIN, MUHAMMAD IMRAN1 imrandin2007@gmail.com, IJAZ, KIRAN1, NASEEM, KHALIDA1 |
| المصدر: |
Chemical Industry & Chemical Engineering Quarterly. 2017, Vol. 23 Issue 3, p399-409. 11p. |
| مصطلحات موضوعية: |
*SACCHARUM, *GENTIAN violet, *AQUEOUS solutions, *SULFURIC acid, *THERMODYNAMICS, *ADSORPTION isotherms |
| الملخص (بالإنجليزية): |
In the present work, Saccharum bengalense (SB) was treated with sulfuric acid to enhance its efficiency. Methyl violet (MV), a cationic dye, was removed from aqueous medium using acid modified S. bengalense (A-SB). Different parameters like adsorbent dosage, stirring speed, temperature, contact time and effect of initial concentration of dye on rate of adsorption of dye from aqueous medium was studied. Experimental data obtained from adsorption of MV was analyzed by applying pseudo first order, pseudo second order and intra- -particle diffusion models and it was found that the data best follows the pseudosecond order kinetics. Thermodynamic parameters indicate that adsorption reaction was spontaneous, feasible and endothermic in nature. Different adsorption isotherm models, like Langmuir, Freundlich, Dubinin-Radushkevich (D-R) and Temkin, were used to study the mechanism of adsorption process and experimental data was well fitted by the Langmuir adsorption isotherm. [ABSTRACT FROM AUTHOR] |
| Abstract (Bosnian): |
ećerna trska Saccharum bengalense (SB) je tretirana sumpornom kiselinom radi povećanja njene sorpcione efikasnosti. Kationska boja, metil-violet (MV), je uklonjena iz vodenog rastvora pomoću kiselinski modifikovan trske (A-SB). Istraeni su različiti parametri, kao to su: doza adsorbenta, brzina meanja, temperatura, vreme kontakta i početna koncentracija boje, na brzinu adsorpcije boje iz vodenog rastvora. Eksperimentalni podaci za adsorpciju MV analizirani su primenom modela pseudo-prvog reda, pseudo-drugog reda i unutra-čestične difuzije. Utvrđeno je da podaci najbolje prate kinetiku pseudo-drugog reda. Termodinamički parametri ukazuju na to da je reakcija adsorpcije spontana, izvodljiva i endotermna po prirodi. Za utvrđivanje mehanizma adsorpcionog procesa korićeni su različiti izotermni modeli adsorpcije, kao to su: izoterme Lengmira, Frojndliha, Dubinin-Radukeviča i Tjomkina, a eksperimentalni podaci se dobro slau sa na izotermom Lengmira. [ABSTRACT FROM AUTHOR] |
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