Equilibrium and kinetics of phosphorous adsorption onto bone charcoal from aqueous solution

Ghaneian, MT; Ghanizadeh, Ghader; Alizadeh, Mohammad Tahghighi Haji; Ehrampoush, MH; Said, Farhan Mohd

doi:10.1080/09593330.2013.854838

Cited by 20 publications

(5 citation statements)

References 39 publications

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“…Adsorption kinetic models were used to assist in finding the adsorption mechanism of TC on the layered carbon particles. Pseudo‐first‐order and pseudo‐second‐order kinetic models were applied to simulate the experimental data for the experimental curve . Their nonlinear forms are shown as below:

q_{t} = q_{e} (1 - e^{- k_{1} t})

q_{t} = \frac{k_{2} q_{e}^{2} t}{(1 + k_{2} q_{e} t)}

…”

Section: Resultsmentioning

confidence: 99%

Efficient adsorption removal of tetracycline by layered carbon particles prepared from seaweed biomass

Guo

Zhao

2016

Env Prog and Sustain Energy

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Seaweed Sargassum sp. has demonstrated its excellent adsorption capability for the removal of heavy metal ions. However, its potential application for the removal of organic pollutants is scarcely reported due to the organic leaching from the raw seaweed. In this research, layered carbon particles were prepared from seaweed Sargassum sp. and used for the adsorptive removal of tetracycline. Kinetic experiments indicated that an especially rapid uptake of tetracycline occurred and the removal percentage achieved 73.8% by 60 min. Though nonlinear fitting method failed to discern which kinetic model better fitted the experimental data, linear pseudo‐second‐order kinetic model was proved to better describe the adsorption kinetics than pseudo‐first‐order kinetic model, indicating the possible chemisorption of tetracycline on the carbon particles. Langmuir isotherm model simulated the adsorption isotherm data slightly better than Freundlich model. At 298 K, the maximum adsorption capacity of 278.4 mg/g for tetracycline uptake was obtained by Langmuir isotherm model. Both natural coexisting anions and humic acid could inhibit the uptake of tetracycline to some extent. These suggest that the layered carbon particles could be applied to the efficient removal of tetracycline from water. © 2016 American Institute of Chemical Engineers Environ Prog, 36: 59–65, 2017

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q_{t} = q_{e} (1 - e^{- k_{1} t})

q_{t} = \frac{k_{2} q_{e}^{2} t}{(1 + k_{2} q_{e} t)}

…”

Section: Resultsmentioning

confidence: 99%

Efficient adsorption removal of tetracycline by layered carbon particles prepared from seaweed biomass

Guo

Zhao

2016

Env Prog and Sustain Energy

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“…Fenomena eutrofikasi dapat juga memicu pertumbuhan alga dan mikroorganisme sehingga keadaan perairan menjadi berwarna hijau, keruh, berbau tidak sedap dan menurunkan kadar oksigen [11]. Terdapat beberapa cara yang telah berhasil untuk menurunkan kadar fosfat di dalam badan air yaitu biological treatment [16], chemical presipitation [33], struvite formation [4], membrane processing [8], dan adsorpsi [22,23]. Metode adsorpsi mempunyai beberapa kelebihan dibandingkan dengan metode yang lain yaitu pengerjaannya yang simpel, murah, dan efisiensi nya tinggi [1].…”

Section: Pendahuluanunclassified

Aktivasi Bottom Ash dari Pembakaran Batubara untuk Menurunkan Kandungan Senyawa Fosfat dalam Air

2019

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Abstrak Penelitian ini bertujuan untuk melihat pengaruh aktivasi bottom ash dengan NaOH terhadap struktur morfologi dan kandungan unsur yang terdapat pada bottom ash serta melihat pengaruh aktivasi terhadap penjerapan kandungan senyawa fosfat dalam air oleh bottom ash. Bottom ash dari hasil pembakaran batubara PT SOCIMAS telah diaktivasi dengan NaOH dan telah digunakan untuk mengadsorpsi fosfat. Fosfat yang digunakan dalam bentuk KH3PO4. Bottom ash terlebih dahulu dikarakterisasi dengan SEM-EDS untuk melihat struktur morfologi beserta kandungan unsur yang terdapat pada bottom ash. Variasi massa bottom ash yang digunakan adalah (1, 2, dan 3 gram), dan ukuran partikel (50-70 mesh, 70-110 mesh, dan 110-140 mesh). Proses aktivasi berlangsung selama 5 jam menggunakan NaOH 3 M, kemudian dicuci hingga pH 7. Bottom ash teraktivasi kemudian di karakterisasi kembali dengan SEM-EDS untuk memastikan zat pengotor yang terdapat pada bottom ash berkurang. Selanjutnya bottom ash digunakan untuk mengadsorpsi fosfat dengan variasi waktu 20, 40, dan 60 menit. Kapasitas adsorpsi yang paling efektif (6,39 mg/g) yaitu pada menit ke-20 dengan ukuran partikel 110-140 mesh dan massa bottom ash 1 gram. Model isoterm Freundlich dan Langmuir digunakan untuk menggambarkan isoterm adsorpsi ion fosfat oleh bottom ash. Berdasarkan data yang telah didapat, model isoterm yang sesuai untuk penelitian ini adalah model isoterm Freudlich (R 2 = 0,9721) dan Langmuir (R 2 = 0,9505) Kata kunci: adsorpsi, aktivasi, bottom ash, NaOH AbstractThis study aims to look at the effect of bottom ash activation with NaOH on the morphological structure and content of the elements contained in bottom ash and see the effect of activation on the absorption of phosphate compounds in water by bottom ash. Bottom ash from PT SOCIMAS coal combustion has been activated with NaOH and has been used to adsorb phosphate. Phosphate used in the form of KH3PO4. Bottom ash was first characterized by SEM-EDS to see the morphological structure and the element content contained in the bottom ash. Bottom ash mass variations used are (1, 2, and 3 grams), and particle size (50-70 mesh, 70-110 mesh, and 110-140 mesh). The activation process lasts for 5 hours using 3 M NaOH, then washed to pH 7. The bottom ash is activated then characterized again with SEM-EDS to ensure the impurities present in the bottom ash are reduced. Furthermore, bottom ash is used to adsorb phosphate with time variations of 20, 40, and 60 minutes. The most effective adsorption capacity (6.39 mg / g) is at the 20th minute with a particle size of 110-140 mesh and a bottom ash mass of 1 gram. The Freundlich and Langmuir isotherm model is used to describe the phosphate ion adsorption isotherm by the bottom ash. Based on the data obtained, the isotherm model suitable for this research is the Freudlich (R 2 = 0.9721) and Langmuir (R 2 = 0.9505) isotherm model.

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“…In order to find the optimal design of the adsorption system for the removal of adsorbate, it is necessary to establish the most appropriate correlation for the equilibrium data. In the study two important isotherms equations, namely, Langmuir and and Freundlich isotherms, were utilized [45,46]. Langmuir isotherm equation describes a monolayer adsorption, while Freundlich isotherm equation describes a multilayer adsorption and their forms were shown in the following:…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Effect of Alkali Treatment of Wheat Straw on Adsorption of Cu(II) under Acidic Condition

Guo

Zhu

et al. 2016

Journal of Chemistry

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The convenient and feasible pretreatment method of alkali treatment is very common in the degradation process of wheat straw. However, its utilization in the pretreatment of wheat straw as alternative adsorbents for aqueous heavy metals remediation is rarely reported. The present study investigated the removal efficiency of Cu(II) ions using wheat straw with alkali pretreatment. The condition of alkali treatment on wheat straw was optimized with the adsorption capacity of Cu(II) as indicator using single-factor experiments. The influences of wheat straw dosages, pH values, contact time, and temperatures on adsorption performance for both untreated wheat straw (UWS) and alkali-treated wheat straw (AWS) were investigated. Results showed that the relatively large removal rate of Cu(II) could be obtained, and chemical behavior occurred during the adsorption process. Characteristic analysis found that the major function of alkali treatment to wheat straw was to introduce the hydroxy group, which resulted in the increase of -C-O- group. Although the adsorption capacity is not as high as the one of ligands supported adsorbents, the method is easy to operate and has a wide range of application; at the same time, it could realize both purposes of treating heavy metal pollution and solid wastes.

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Equilibrium and kinetics of phosphorous adsorption onto bone charcoal from aqueous solution

Cited by 20 publications

References 39 publications

Efficient adsorption removal of tetracycline by layered carbon particles prepared from seaweed biomass

Efficient adsorption removal of tetracycline by layered carbon particles prepared from seaweed biomass

Aktivasi Bottom Ash dari Pembakaran Batubara untuk Menurunkan Kandungan Senyawa Fosfat dalam Air

Effect of Alkali Treatment of Wheat Straw on Adsorption of Cu(II) under Acidic Condition

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