scholarly journals Isoterm Adsorpsi Rhodamin B Pada Arang Aktif Kayu Linggua

Jurnal MIPA ◽  
2013 ◽  
Vol 2 (1) ◽  
pp. 40
Author(s):  
Stero H. Roring ◽  
Mariska M. Pitoi ◽  
Jemmy Abidjulu
Keyword(s):  
Activated Carbon ◽  
Adsorption Isotherm ◽  
Rhodamine B ◽  
Wood Waste ◽  
Batch Experiment ◽  
Adsorption Coefficient ◽  
Freundlich Model ◽  
Rhodamin B ◽  
Langmuir And Freundlich Models ◽  
Better Than

Telah dilakukan penelitian adsorpsi rhodamin B pada arang aktif yang dibuat dari kayu linggua. Penelitian ini bertujuan untuk menentukan koefisien adsorpsi arang aktif limbah gergajian kayu linggua terhadap zat warna rhodamin B dengan menggunakan isoterm adsorpsi Langmuir dan Freundlich. Penelitian dilakukan secara batch di mana 0,1; 0,2; 0,4; 0,7 dan 1 gram arang aktif dimasukkan ke dalam labu Erlenmeyer terpisah yang masing-masing telah berisi 100 mL larutan rhodamin B 100 ppm. Campuran kemudian diperlakukan di atas magnetic stirrer selama 50 menit dan selanjutnya konsentrasi larutan rhodamin B dianalisis menggunakan spektrofotometer UV-Vis. Hasil penelitian menunjukkan bahwa isoterm adsorpsi rhodamin B pada arang aktif kayu linggua lebih mengikuti isoterm adsorpsi Freundlich dengan koefisien adsorpsi 2,999x10-4 dan nilai intensitas adsorpsi 1,459.Adsorption isotherm of rhodamine B by activated carbon made from linggua wood waste was investigated. The adsorption isotherm was analyzed by Langmuir and Freundlich models. The isotherm was measured by batch experiment where 0,1; 0,2; 0,4; 0,7; and 1,0 grams where added into the separated Erlenmeyer flasks filled with 100 mL of 100 ppm rhodamine B. The mixtures were then treated on magnetic stirrers for 50 minutes followed by rhodamine B analysis using spectrophotometer UV-Vis. The result showed that the isotherm followed the Freundlich model better than Langmuir with the Freundlich adsorption coefficient of 2,999x10-4 and the Freundlich exponent of 1,459.

Study on the Adsorption of Trichloroethylene in Water on Activated Carbon and Activated Carbon Fibers

2010 ◽  
Vol 113-116 ◽  
pp. 1021-1024 ◽  
Author(s):  
Da Song He ◽  
Cun Ping Liu ◽  
Yong Fu Yuan ◽  
Xiu Ying Li
Keyword(s):  
Activated Carbon ◽  
Adsorption Isotherm ◽  
Carbon Fibers ◽  
Langmuir Model ◽  
Activated Carbon Fibers ◽  
Freundlich Model ◽  
Efficient Process ◽  
Langmuir And Freundlich Models

The removal of trichloroethylene (TCE) from water using activated carbon fibers (ACF) and activated carbon (AC) was investigated. Adsorption, as an efficient process to remove TCE from water was chosen; in particular with ACF and AC as adsorbents. The results showed that physisorption play important roles for adsorption of TCE onto activated carbon fibers, while the less important chemisorption. Langmuir and Freundlich models were then employed to correlate the equilibria data. The Langmuir model best described the AC adsorption isotherm of TCE, with R2 0.9942. Freundlich model best fitted the ACF adsorption isotherm of TCE, with R2 0.9978.

scholarly journals PEMBUATAN DAN KARAKTERISASI KATALIS ZnO/KARBON AKTIF DENGAN METODE SOLID STATE DAN UJI AKTIFITAS KATALITIKNYA PADA DEGRADASI RHODAMIN B

2014 ◽  
Vol 7 (2) ◽  
pp. 180
Author(s):  
Upita Septiani ◽  
Ilona Bella ◽  
Syukri
Keyword(s):  
Activated Carbon ◽  
Solid State ◽  
Rhodamine B ◽  
Uv Light ◽  
Composite Catalyst ◽  
X Ray Diffraction ◽  
Sem Images ◽  
Scanning Electronmicroscopy ◽  
Rhodamin B

 ABSTRACTComposite catalyst ZnO/Activated Carbon (ZnO/AC) had been synthesized successfully bysolid state method. Synthesis was done by varying the addition of activated carbon (AC) 2%,5%, and 10% ZnO mass. Composite catalyst were calcinated at 400oC and characterized byFTIR (Fourier Transform Infra Red), XRD (X-Ray Diffraction), SEM (Scanning ElectronMicroscopy). Based on the results of FTIR, absorption appeared in the region wave number1400-1600 cm-1, which indicated stretching of C=C was assumed come from AC. From theXRD results, it was known by the addition of AC, not overly change the crystallinity and crystalsize of ZnO, the crystal structure is hexagonal (wurtzite). SEM images showed AC preventedthe agglomeration of ZnO that would expand the surface area of ZnO and increased catalyticactivity of ZnO. For the results of the catalytic activity test, catalyst ZnO/AC was tested on thedegradation of Rhodamine B solution (10 ppm) by UV light irradiation, where the increasingnumber of trains the catalytic ability of ZnO also increased, it could be concluded that activatedcarbon can support to increase the role of ZnO in degrading Rhodamine B.Keywords: composite catalyst, ZnO, activated carbon, solid state, Rhodamine B

The Adsorption Characteristics of Phytochemical on Supporters

2013 ◽  
Vol 781-784 ◽  
pp. 919-922
Author(s):  
Thararat Mankit ◽  
Anurak Petiraksakul ◽  
Pijit Jiemvarangkul
Keyword(s):  
Activated Carbon ◽  
Adsorption Isotherm ◽  
Adsorption Mechanism ◽  
Adsorption Equilibrium ◽  
Liquid Product ◽  
Equilibrium Adsorption ◽  
Equilibrium Time ◽  
Company Limited ◽  
Langmuir Constants ◽  
Langmuir And Freundlich Models

The objective of this research is to study equilibrium adsorption, adsorption isotherm and the amount of the phytochemical called Micronice Bio MEX 3, which is adsorbed on various supporters. Micronice is a biodegradable chemical liquid product collected from Technogreen Company Limited. The supporters in this work are activated carbon, zeolite and brick which are used as adsorbents. The supporters were immersed in the Micronice with various periods to find out their adsorption equilibrium time. The results show that the adsorption equilibrium time for all supporters is 60 minutes and the mass adsorption percentages of activated carbon, zeolite and brick are 14.05%, 1.58% and 2.24%, respectively. An adsorption isotherm can be described by the Langmuir and Freundlich models. The Freundlich constants of activated carbon, zeolite and brick are KF= 4.76 x10-8(mg/g)(L/mg)1/n, 7.15x10-8(mg/g)(L/mg)1/nand 1.10x10-4(mg/g)(L/mg)1/n, n = 0.772, 0.619 and 0.922, respectively. The Langmuir constants of activated carbon, zeolite and brick are KL= 756.62 L/mg, 12,924 L/mg and 3,918.60 L/mg, qo= 1,428.57 mg/g, 44.25 mg/g and 303.030 mg/g. The results present that the adsorption mechanism of all supporters can be well described by both Langmuir and Freundilch models and the best supporter is activated carbon.

scholarly journals Removal of Rhodamine B (A Basic Dye) and Acid Yellow 17 (An Acidic Dye) from Aqueous Solutions by Ordered Mesoporous Carbon and Commercial Activated Carbon

2019 ◽  
Vol 3 (1) ◽  
pp. 30 ◽  
Author(s):  
Katarzyna Jedynak ◽  
Dariusz Wideł ◽  
Nina Rędzia
Keyword(s):  
Activated Carbon ◽  
Adsorption Isotherm ◽  
Rhodamine B ◽  
Mesoporous Carbon ◽  
Nitrogen Adsorption ◽  
Ordered Mesoporous Carbon ◽  
Isotherm Models ◽  
Order Kinetic ◽  
Templating Method ◽  
Ordered Mesoporous

In this work, adsorption of rhodamine B (RB) and acid yellow 17 (AY17) was investigated on ordered mesoporous carbon material obtained by soft-templating method with hydrochloric acid (ST-A). For comparison, the adsorption process on commercial activated carbon CWZ-22 was also carried out. The sorbents were characterized by nitrogen adsorption/desorption isotherms and scanning electron microscopy. Langmuir and Freundlich adsorption isotherm models were applied to simulate the equilibrium data of RB and AY17. Adsorption isotherm data could be better described by the Langmuir model than the Freundlich model. The adsorption kinetics of RB and AY17 on studied carbons could be well depicted by using pseudo-second-order kinetic modeling. The adsorption capacity increased with temperature increase in the range of 298–315 K. In the whole diffusion process, the intraparticle diffusion was involved, but not the whole rate-controlling step. The calculated thermodynamic parameters, including Gibbs free energy (∆G), enthalpy (∆H), and entropy (ΔS) suggested that adsorption processes of RB and AY17 on ST-A and CWZ-22 were endothermic and spontaneous.

scholarly journals Carbaryl Sorption by Porogen-Treated Banana Pith Carbon

2008 ◽  
Vol 26 (9) ◽  
pp. 679-686 ◽  
Author(s):  
M. Sathishkumar ◽  
J.G. Choi ◽  
C.S. Ku ◽  
K. Vijayaraghavan ◽  
A.R. Binupriya ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Adsorption Isotherm ◽  
Adsorption Capacity ◽  
Adsorption Isotherms ◽  
Kinetic Data ◽  
Maximum Adsorption Capacity ◽  
Adsorption Ability ◽  
Ph Dependent ◽  
Langmuir And Freundlich Models

This paper reports the adsorption ability of banana pith activated carbon, with ZnCl2 as the porogen, towards carbaryl (1-naphthyl- N-methylcarbamate) from aqueous solution. The pH-edge experiments revealed that carbaryl adsorption onto ZnCl2-treated banana pith activated carbon (ZTC) was a pH-dependent process with maximum adsorption occurring at pH 11. The adsorption isotherm obtained at pH 11 revealed that ZTC possessed a maximum adsorption capacity of 45.9 mg/g. The adsorption isotherms were well described by the Langmuir and Freundlich models. The kinetic data obtained at different initial carbaryl concentrations were modelled using pseudo-first- and -second-order models. Acetone successfully desorbed carbaryl with a 99.8% elution efficiency.

scholarly journals An adsorption isotherm model for adsorption performance of silver-loaded activated carbon

2017 ◽  
Vol 21 (4) ◽  
pp. 1645-1649 ◽  
Author(s):  
Xue-Feng Yan ◽  
Xue-Rong Fan ◽  
Qiang Wang ◽  
Yue Shen
Keyword(s):  
Activated Carbon ◽  
Adsorption Isotherm ◽  
Adsorption Mechanism ◽  
Activated Carbon Fiber ◽  
Isotherm Model ◽  
Adsorption Performance ◽  
Equilibrium Concentrations ◽  
Two Parameters ◽  
Langmuir And Freundlich Models ◽  
Adsorption Quantity

The adsorption mechanism of methylene blue onto silver-loaded activated carbon fiber is different from those by Langmuir and Freundlich models. In this paper, an adsorption isotherm model is established with two parameters to describe nanosilver impact and load amount of silver nanoparticles, respectively, on adsorb-ability. In the process, the absorbance value of equilibrium solution was measured by spectrophotometry, and thus equilibrium concentrations and equilibrium adsorption quantity were calculated. The model was determined according to the fitting curve and comparison was made between the theoretical prediction and experimental data, showing relative good consistence.

scholarly journals Adsorption Isotherm Studies of Rhodamine B on Citrus sinesis Peel

2018 ◽  
Vol 3 (1) ◽  
pp. 47-53
Author(s):  
Gani Purwiandono ◽  
Puji Lestari ◽  
Wahyu Widodo ◽  
Marlina Marlina ◽  
Nadia Aprilia
Keyword(s):  
Adsorption Isotherm ◽  
Rhodamine B ◽  
Adsorption Mechanism ◽  
Adsorption Process ◽  
Active Surface ◽  
Adsorption Model ◽  
Freundlich Model ◽  
Neutral Ph

Adsorption of Rhodamine B on Citrus sinesis peel biosorbent has been conducted. The adsorption process was carried out in neutral pH for 90 min. The active surface of the Citrus sinesis peel biosorbent was 15 m2/g and the density was 0.52 g/cm3. The adsorption mechanism of Rhodamine B on Citrus sinesis peel biosorbent was studied using 4 adsorption model; Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich. The adsorption fitted the Freundlich model with the regression value of 0.906. This indicates that the adsorption of Rhodamine B on the surface of Citrus sinesis peel biosorbent was a multilayer interaction.

Pemanfaatan Cangkang Pensi (Corbicula Moltkiana) sebagai Bahan Penyerap Zat Warna Rhodamin B Dalam Larutan

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Rahmiana Zein ◽  
Mutia Khuratul Aini ◽  
Hermansyah Aziz
Keyword(s):  
Rhodamine B ◽  
Sem Analysis ◽  
Spectra Analysis ◽  
Biosorption Capacity ◽  
Biosorption Process ◽  
Langmuir Isotherm Model ◽  
Ft Ir ◽  
Cationic Exchange ◽  
Rhodamin B ◽  
Model Isotherm

Biosorpsi zat warna Rhodamine B menggunakan cangkang Pensi (Corbicula moltkiana) telah dikaji. Percobaan dilakukan dengan system batch guna memperoleh kondisi optimum biosorspi zat warna. Kapasitas biosorpsi zat warna pada pH 2 adalah 0.9958 mg/g, dengan konsentrasi larutan mula-mula 150 mg/L waktu kontak 105 menit, massa biosorben 0.1 g, ukuran partikel 32 µm dan temperature pengeringan biosorben pada 75oC. Model isotherm Langmuir menunjukkan bahwa proses penyerapan berlangsung secara kimia dan biosorpsi homogeny dari adsorbat (Rhodamine B) pada permukaan biosorben membentuk lapisan tunggal dengan nilai R2 0.9966. Analisis XRF menunjukkan bahwa penurunan kadar unsur logam pada cangkang Pensi membuktikan bahwa proses biosorpsi berlangsung dengan pertukaran kation. Hasil analisis spektrum FT-IR membuktikan adanya interaksi antaramolekul Rhodamin B dengan gugus fungsi pada cangkang Pensi. Analisis dengan SEM memperlihatkan bahwa pori-pori cangkang Pensi telah terisi penuh oleh molekul Rhodamin B. Kondisi optimum biosorpsi telah diaplikasikan pada limbah kerupuk merah dengan kapasitas penyerapan sebesar 0,2835 mg/g.   The biosorption of Rhodamine B dyes by Pensi (Corbicula moltkiana) shell has been investigated. The experiment was conducted in batch sistem in order to obtain the optimum conditions of dye biosorption. Biosorption capacity of dye was 0.9958 mg/g at pH 2, initial concentration 150 mg/L, contact time 105 minutes, biosorbent mass 0.1 gram, particle size 32 µ m and biosorbent drying temperature was at 75oC. The Langmuir Isotherm model showed chemisorption and homogeneous biosorption process of adsorbates onto the biosorbent surface formed monolayer dye molecules on the biosorbent surface with R2 value was 0.9966. XRF analysis showed that reduction of metals unsure quantity of pensi shell indicated biosorption process was occupied through cationic exchange. The result of FTIR spectra analysis indicated an interaction between Rhodamin B molecules and functional group of pensi shell. SEM analysis showed that the pensi shell pores were completely filled by Rhodamine B molecules. The optimum condition of biosorption has been aplicated in red chips wastewater industry with biosorption capacity was 0.2835 mg/g.

Sign in / Sign up

Export Citation Format

Share Document