Mathematical Modeling of Batch Adsorption Kinetics of Lead Ions on Modified Natural Zeolite from Aqueous Media

Among the investigated clays and minerals (kaolinite, natural zeolite, manual zeolite, bentonite, sepiolite, sepiolite amianthus, tremolite amianthus, vermiculite and baritite), the baritite clay was selected as the optimal adsorbent for aqueous Cr (VI). The Cr (VI) adsorption capacity on baritite clay reached as high as 39.01 mg∙g−1 at 20°C. Then the adsorption kinetics of Cr (VI) by the baritite clay were investigated in details. Results showed that the pseudo-second-order model was a suitable description for the adsorption kinetics and fitted well with the experimental data.

Download Full-text

Kajian Model Interaksi pada Adsorpsi Logam Berat Kadmium (Cd2+) dengan Menggunakan Adsorben dari Pasir Hitam

Jurnal Teknik Kimia USU ◽

10.32734/jtk.v8i2.2032 ◽

2019 ◽

Vol 8 (2) ◽

pp. 79-84

Author(s):

Bode Haryanto ◽

Warren K Sinaga ◽

Febri T Saragih

Keyword(s):

Correlation Coefficient ◽

Adsorption Kinetics ◽

Batch Adsorption ◽

Kinetics Of Adsorption ◽

Black Sand ◽

Kinetics Modeling ◽

Sand Surface ◽

Percentage Concentration ◽

Black Sands ◽

Kinetics Of

This study aimed to analyze the adsorption ability of black sand in the metal ions adsorb cadmium (Cd2+) with a concentration of 70 ppm to a solution with a pH of 4,5. The black sand is used is 40 mesh. This research was conducted by batch adsorption system naturally and adsorption kinetics modeling. Kinetics of adsorption reached equilibrium at time t = 120 minutes with the percentage concentration of adsorbed Cd2+ 18,5%. In the adsorption kinetics modeling correlation coefficient is almost the same between the equations of first order and second order in the amount of 0.98 and 0.99. The result indicated that the type of interaction Cd2+ ions on the surface of black sands occur in chemistry and physics. The adsorption kinetics of diffusion modeling of internal and external diffusion of the correlation coefficient of 0,85 and 0,71. From this data it can be seen that in this study is modeling kinetic internal diffusion trend that shows adsorbent particles are inter sand surface area that experienced internal inter-particle pore diffusion.

Download Full-text

Preparation and characterization of nano-hydroxyapatite and its competitive adsorption kinetics of copper and lead ions in water

Nanomaterials and Nanotechnology ◽

10.1177/1847980416680807 ◽

2016 ◽

Vol 6 ◽

pp. 184798041668080 ◽

Cited By ~ 3

Author(s):

Yujia Song ◽

Jing Gao ◽

Yumang Zhang ◽

Shoufa Song

Keyword(s):

Adsorption Kinetics ◽

Competitive Adsorption ◽

Lead Ions ◽

Kinetics Of

Download Full-text

Role of EDAPTMS-Functionalized Silica Derived from Rice Husk Ash in the Adsorption Kinetics of Cu(II), Cr(III), and Pb(II)

BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS ◽

10.9767/bcrec.13.2.1587.331-340 ◽

2018 ◽

Vol 13 (2) ◽

pp. 331

Author(s):

Is Fatimah ◽

Tesha Yuliarni ◽

Dian Riyanti

Keyword(s):

Metal Ions ◽

Surface Area ◽

Rice Husk ◽

Adsorption Kinetics ◽

Rice Husk Ash ◽

Batch Adsorption ◽

Mixed Solution ◽

Functionalized Silica ◽

Kinetics Of

In the present work, synthesis of (3-ethylene diamino propyl)-trimethoxysilane (EDAPTMS)-functionalized silica prepared from rice husk ash (RHA) and its adsorptivity of Cu(II), Cr(III), and Pb(II) in an aqueous solution was investigated. The EDAPTMS-functionalized silica was prepared by destruction of RHA with 4 M NaOH solution followed by functionalization by using the sol-gel method. The interaction was engaged by mixing EDAPTMS with silica gel in an acid condition followed by aging. The gel obtained from the procedure was analyzed by using X-ray diffraction (XRD), infrared spectroscopy (FTIR), and a surface area analyzer (SAA). Effect of EDAPTMS content on the material character and adsorption capability are the focuses of the study. The adsorption study was conducted in a batch adsorption system for Cu(II), Cr(III), and Pb(II) mixed solution and metal ion analyses were performed by atomic absorption spectrophotometry. The results showed that enhancement of physicochemical character was obtained after modification Based on the quantitative analysis of each metal, the kinetics of adsorption of a single solution of each ion and mixed solutions were studied. as shown by the increasing specific surface area as well as the increasing adsorption rate of the metal ions along increasing EDAPTMS content. Langmuir and Freundlich models were utilized for the kinetic study. Adsorption selectivity and adsorption kinetics were found to be strongly influenced by ionic coordination bonding with metal ions. The interpretation of the kinetic models showed the fitness of the Freundlich model for all metal ions. Copyright © 2018 BCREC Group. All rights reservedReceived: 8th October 2017; Revised: 27th January 2018; Accepted: 29th January 2018; Available online: 11st June 2018; Published regularly: 1st August 2018How to Cite: Fatimah, I., Yuliani, T., Rianti, D. (2018). Role of EDAPTMS-Functionalized Silica Derived from Rice Husk Ash in the Adsorption Kinetics of Cu(II), Cr(III), and Pb(II). Bulletin of Chemical Reaction Engineering & Catalysis, 13 (2): 331-340 (doi:10.9767/bcrec.13.2.1587.331-340)

Download Full-text

Adsorption kinetics of 4-nitrophenol onto a cellulosic material, mansonia wood sawdust and multistage batch adsorption process optimization

Carbohydrate Polymers ◽

10.1016/j.carbpol.2010.09.023 ◽

2011 ◽

Vol 83 (3) ◽

pp. 1192-1200 ◽

Cited By ~ 27

Author(s):

Augustine E. Ofomaja ◽

Emmanuel I. Unuabonah

Keyword(s):

Process Optimization ◽

Adsorption Kinetics ◽

Adsorption Process ◽

Batch Adsorption ◽

Cellulosic Material ◽

Wood Sawdust ◽

Kinetics Of

Download Full-text

Adsorption Kinetics of Arsenic (V) on Nanoscale Zero-Valent Iron Supported by Activated Carbon

Nanomaterials ◽

10.3390/nano10091791 ◽

2020 ◽

Vol 10 (9) ◽

pp. 1791

Author(s):

Huijie Zhu ◽

Mingyan Shi ◽

Xiuji Zhang ◽

Bo Liu ◽

Dahu Yao

Keyword(s):

Activated Carbon ◽

Adsorption Kinetics ◽

Negative Impact ◽

Zero Valent Iron ◽

Batch Adsorption ◽

Adsorption Method ◽

Factors Affecting ◽

Adsorbent Dosage ◽

Nanoscale Zero Valent Iron ◽

Kinetics Of

The presence of arsenic (As) in drinking water is of serious concern due to its negative impact on human health. This work reports on the kinetics of nanoscale zero-valent iron (Fe0) supported by activated carbon (NZVI/AC) for the removal of As (V) species from aqueous solutions. To better understand the factors affecting this process, we investigated the effects of various experimental parameters including initial As (V) concentration, adsorbent dosage, pH, temperature, and coexisting ions on the adsorption kinetics using a batch-adsorption method. The optimum conditions for As (V) removal by NZVI/AC were found to be: 318 K, pH 3.5, an adsorbent dosage of 1.5 g/L, and an equilibrium time of 72 h. A greater mass of NZVI/AC, lower concentration of As (V) and lower pH positively promoted adsorption kinetics. The presence of phosphate (PO43−) and silicate (SiO42−) markedly inhibited As (V) removal kinetics. However, in the presence of 4.5 g/L NZVI/AC, ≥99.9% of As (V) was removed from raw groundwater.

Download Full-text

Adsorption kinetics of nonanediol and nonane dicarbonic acid at the air/water interface

Journal de Chimie Physique ◽

10.1051/jcp/1982790387 ◽

1982 ◽

Vol 79 ◽

pp. 387-393 ◽

Cited By ~ 25

Author(s):

P. Joos ◽

G. Bleys ◽

G. Petre

Keyword(s):

Adsorption Kinetics ◽

Water Interface ◽

Air Water Interface ◽

Kinetics Of ◽

Dicarbonic Acid

Download Full-text

Utilisation of Biomass and Hybrid Biochar from Elephant Grass and Low Density Polyethylene for the Competitive Adsorption of Pb(II), Cu(II), Fe(II) and Zn(II) from Aqueous Media

Recent Innovations in Chemical Engineering (Formerly Recent Patents on Chemical Engineering) ◽

10.2174/2405520413999201117143926 ◽

2020 ◽

Vol 13 ◽

Author(s):

Joshua O. Ighalo ◽

Lois T. Arowoyele ◽

Samuel Ogunniyi ◽

Comfort A. Adeyanju ◽

Folasade M. Oladipo-Emmanuel ◽

...

Keyword(s):

Heavy Metals ◽

Removal Efficiency ◽

Contact Time ◽

Competitive Adsorption ◽

Adsorption Process ◽

Aqueous Media ◽

Polluted Water ◽

Batch Adsorption ◽

Order Kinetic ◽

Elephant Grass

Background: The presence of pollutants in polluted water is not singularized hence pollutant species are constantly in competition for active sites during the adsorption process. A key advantage of competitive adsorption studies is that it informs on the adsorbent performance in real water treatment applications. Objective: This study aims to investigate the competitive adsorption of Pb(II), Cu(II), Fe(II) and Zn(II) using elephant grass (Pennisetum purpureum) biochar and hybrid biochar from LDPE. Method: The produced biochar was characterised by Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR). The effect of adsorption parameters, equilibrium isotherm modelling and parametric studies were conducted based on data from the batch adsorption experiments. Results: For both adsorbents, the removal efficiency was >99% over the domain of the entire investigation for dosage and contact time suggesting that they are very efficient for removing multiple heavy metals from aqueous media. It was observed that removal efficiency was optimal at 2 g/l dosage and contact time of 20 minutes for both adsorbent types. The Elovich isotherm and the pseudo-second order kinetic models were best-fit for the competitive adsorption process. Conclusion: The study was able to successfully reveal that biomass biochar from elephant grass and hybrid biochar from LDPE can be used as effective adsorbent material for the removal of heavy metals from aqueous media. This study bears a positive implication for environmental protection and solid waste management.

Download Full-text