The Role of Carboxyl and Hydroxyl Groups of Humic Acid in Removing AuCl&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;-&lt;/sup&gt; from Aqueous Solution

Sudiono, Sri; Yuniarti, Mustika; Siswanta, Dwi; Kunarti, Eko Sri; Triyono, Triyono; Santosa, Sri Juari

doi:10.22146/ijc.23620

Cited by 28 publications

(15 citation statements)

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“…Since recoverable sugar content is subordinate to two components of root yield and sugar content, therefore increasing the amount of humic acid consumed can increase recoverable sugar yield by increasing root yield (Rehab et al, 2019). Previous research has shown that the use of humic acid reduces molasses sugar by reducing root impurities (Sudiono et al, 2017).…”

Section: Sugar Contentmentioning

confidence: 99%

Effect of Humic Acid Application on Quantitative Parameters of Sugar Beet (Beta vulgaris L.) Cv. Shirin

Rahimi

Kıralan

Ahmadi

2020

Alexandria Science Exchange Journal

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The present experiment aimed to investigate the influence of humic acid application on qualitative traits of sugar beet cv. 'Shirin' basis of a randomized complete block design with four replications during 2007-2008. The plants were treated with different humic acid treatments (control, 200, 300, 400, 500, and 600 kg ha-1). The nonsugar components such as potassium, sodium, aminonitrogen and some qualitative parameters for sugar processing such as alkalinity, root yield, sugar percent, recoverable sugar, and sugar content in molasses were determined according to standard methods. According to results, humic acid application enhanced sugar quality of sugar beet. The lowest value of K, Na and amino-nitrogen were observed in H300 sample (300 kg ha-1) with 3.85 meq 100 g-1 pulp, 1.22 meq 100 g-1 pulp and 1.21 meq 100 g-1 pulp, respectively. The highest recoverable sugar content (15.64%) was obtained from 300, 400, 500, and 600 kg ha-1 application. Also, the highest sugar yield resulted from 400, 500, and 600 kg ha-1 and the lowest sugar content in molasses were observed in the treatments of 200 and 300 kg ha-1 humic acid.

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Section: Sugar Contentmentioning

confidence: 99%

Effect of Humic Acid Application on Quantitative Parameters of Sugar Beet (Beta vulgaris L.) Cv. Shirin

Rahimi

Kıralan

Ahmadi

2020

Alexandria Science Exchange Journal

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“…One of the sorbed mechanism metal ions onto functional group in HD-HA is water bridge [27]. This mechanism can be proved from ratio monolayer sorption capacity of Cd(II) and Zn (II) closely match with ratio hydrate radii for Cd(II) and Zn(II), that was 5 : 6.…”

Section: Sorption Isothermmentioning

confidence: 73%

“…Acidity is a function of amount H + in solution medium. It has high effect on the form of chemical substance or metal substance in aqueous medium [27]. Lower pH (high acidity) affects in decreasing the metal ions that attached in active site of sorbent as a result of competition between H + which the consequences is high concentration of unsorbed metal ions in solution.…”

Section: Effect Of Medium Aciditymentioning

confidence: 99%

Comparison the New Kinetics Equation of Non-competitive Sorption Cd(II) and Zn(II) onto Green Sorbent Horse Dung Humic Acid (HD-HA)

Rahmat

Ngatijo

Santosa

et al. 2018

Bull. Chem. React. Eng. Catal.

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The new kinetics equation has been proposed and applied to the sorption of Cd(II) and Zn(II) onto green sorbent horse dung humic acid (HD-HA). This work aims to study the new kinetics equation and to compare its parameters with Lagergren and Ho kinetics equation in the same system. HD-HA was extracted and purified by Stevenson’s methods and then characterized by detection of its functional group, UV-Vis spectra, and total acidity. The sorption study of this work was investigated by batch experiment in pH optimum 5. Langmuir’s monolayer sorption capacity (b) of Cd(II) and Zn(II) onto HD-HA was 1.329×10-3 and 1.070×10-3 mole.g-1, respectively. Langmuir equilibrium constant (KL) of Cd(II) and Zn(II) sorption was 5,651 and 6,399 (mole/L)-1, respectively. The kinetics parameters were determined by Lagergren, Ho, and the new kinetics equation. The best linearity (R2) and the most fitted sorbed metal ion in equilibrium (xe) with the experimental data was the Ho kinetics equation. However, the correct value of sorption rate constant (ka) was not really known, because the ka resulted from Ho and Lagergren kinetics equation can not be compared with another parameter and there is no scale to measure the correctness of this value of ka. In this work, the correctness value of ka of the new kinetics equation can be measured by ka/kd equal to K, and this K should be equal to KL. The values of K of Cd(II) (3,452 (mole/L)-1) and and Zn(II) (10,898 (mole/L)-1) were quite similar with KL. Additionally, the value of intercept from linear regression of this new kinetics equation (Cd(II) = 6.8517; Zn(II) = 6.0408) was highly similar with the manually calculation of -ln(xe/ab) (Cd(II) = 7.0638; Zn(II) = 6.9838). These new kinetics equations also reveal that Lagergren sorption rate constant (kLag) is the complex function of ka(ab-xe2)/xe). Copyright © 2018 BCREC Group. All rights reservedReceived: 21st November 2017; Revised: 28th June 2018; Accepted: 3rd July 2018How to Cite: Basuki, R., Ngatijo, Santosa, S.J., Rusdiarso, B. (2018). Comparison the New Kinetics Equation of Non-competitive Sorption Cd(II) and Zn(II) onto Green Sorbent Horse Dung Humic Acid (HD-HA). Bulletin of Chemical Reaction Engineering & Catalysis, 13 (3): 475-488 (doi:10.9767/bcrec.13.3.1774.475-488)Permalink/DOI: https://doi.org/10.9767/bcrec.13.3.1774.475-488

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“…Asam humat hasil ektraksi dari tanah gambut sesuai dengan tatacara yang disarankan oleh the International Humic Substances Society (IHSS), terbukti memiliki kemampuan mengadsorp AuCl4dari dalam larutan. Adsorpsi berlangsung optimum pada pH 2,0 dan proses ini dikendalikan oleh ikatan hidrogen pada gugus -COOH tak-terionisasi sedangkan reduksi Au(III) menjadi logam emas (Au) terjadi karena peran gugus -OH (Santosa et al, 2011;Sudiono et al, 2017). Studi adsorpsi ion Au(III) dengan menggunakan asam humat menggunakan metode batch memiliki kemampuan adsorpsi mencapai 84,05% selama 1500 menit ) Ismillayli et al, (2009 telah mengisolasi asam humat dari tanah gambut Rawa Pening Ambarawa dalam suasana basa.…”

Section: Pendahuluanunclassified

Humic Acid Isolation from Batujai Dam Lombok Tengah-NTB and its Potential as Reductive–Biosorbent Au(III) in The Batch System

Ismillayli

Hermanto

2020

J. I. Dasar

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The Study of Au(III) ions adsorption by humic acid in batch system has been done. Humic acid was isolated from Batujai Dam Lombok Tengah 0.1 M NaOH and continued with 0.1 M HCl/0.3 M HF washing to dissolve silica. Functional groups of isolated humic acid was investigated by FTIR Spectroscopy and the adsorption process was studied by XRD and SEM analyses. It has been found that humic acid contained carboxylic, phenols, alcoholic, ether, amines functional groups, aliphatic hydrocarbon and aromatic ring. XRD and SEM data showed that humic acid did not only adsorp Au(III) ions but also reduce them to gold particles. Therefore, humic acid has the potential as reductive-biosorbent for Au(III) in batch system. Keywords: humic acid, reductive-biosorbent, Au(III) ions.

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The Role of Carboxyl and Hydroxyl Groups of Humic Acid in Removing AuCl<sub>4</sub><sup>-</sup> from Aqueous Solution

Abstract: ABSTRACT

Cited by 28 publications

References 50 publications

Effect of Humic Acid Application on Quantitative Parameters of Sugar Beet (Beta vulgaris L.) Cv. Shirin

Effect of Humic Acid Application on Quantitative Parameters of Sugar Beet (Beta vulgaris L.) Cv. Shirin

Comparison the New Kinetics Equation of Non-competitive Sorption Cd(II) and Zn(II) onto Green Sorbent Horse Dung Humic Acid (HD-HA)

Humic Acid Isolation from Batujai Dam Lombok Tengah-NTB and its Potential as Reductive–Biosorbent Au(III) in The Batch System

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