Adsorpsi Ion Logam Kromium Heksavalen Cr (VI) Dalam Larutan Menggunakan Zeolit Berlapis Oksida Mangan (MnO2)

Nabiela, Maula; Hidayah, Malikhatul; Azizati, Zidni

doi:10.21580/wjc.v3i2.6073

Cited by 3 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Naturally, Cr is found in all environmental components, such as water, air, and soil but few in the amount [6]. Cr 6+ is often used in waste industry textile, electroplating, mining, leather tanning, fertilizer, cement, and photography [7]. Pollution by Cr 6+ is a concern because it can be accumulated in the tissues of living organisms [8].…”

Section: Introductionmentioning

confidence: 99%

High-Efficiency Adsorption of Hexavalent Chromium from Aqueous Solution by Samanea saman Activated Carbon

Ni’am

Fenelon

Ningsih

et al. 2022

Adsorption Science & Technology

View full text Add to dashboard Cite

Heavy metal wastewater pollution has become an environmental and industrial challenge worldwide. Hexavalent chromium (Cr(VI)) is one of the most common forms of chromium metal. Hexavalent chromium pollution is a concern because it was hazardous and can accumulate in the tissues of living organisms and the environment. The adsorption method using activated carbon can be one of the methods to treat hexavalent chromium waste. This study selected Samanea saman as the activated carbon because it contains hemicellulose, lignocellulose, and lignin, which are the requirements for an excellent activated carbon. The study’s objective is to analyze Samanea saman activated carbon (SSAC) to remove hexavalent chromium, measure the adsorption capacity, and determine the appropriate type of adsorption isotherm layer based on the maximum R 2 and minimum χ 2 values. The process of making activated carbon was activated using K2CO3 through a pyrolysis process and using batch adsorption. The SEM results as characterization of SSAC depicted that the high pore was well developed. The optimal conditions for Samanea saman indicated high efficiency toward hexavalent chromium ions within the following process parameters; pH value 5, adsorbent dosage 5 g, and initial concentration 20 mg/L. The findings demonstrate that SSAC leads to the removal efficiency of hexavalent chromium being 99.90%, with the greatest adsorption capacity of 0.8949 mg/g. Based on the maximum R 2 and minimum χ 2 values, the most suitable adsorption isotherm model in SSAC was the Freundlich isotherm existing in the monolayer ( R 2 = 0.999 ). The experimental results demonstrated that adsorption of Cr(VI) was well performed by SSAC. Thus, the SSAC material is an appropriate adsorbent for the removal of hexavalent chromium in the water and has the potential to be industrial applied.

show abstract

Section: Introductionmentioning

confidence: 99%

High-Efficiency Adsorption of Hexavalent Chromium from Aqueous Solution by Samanea saman Activated Carbon

Ni’am

Fenelon

Ningsih

et al. 2022

Adsorption Science & Technology

View full text Add to dashboard Cite

show abstract

“…The adsorption process can experience equilibrium, so further addition of contact time does not significantly affect metal absorption. The physical contact between the metal and the adsorbent causes the metal to be released into the solution over time [18], [19]. Physical contact between the metal and the adsorbent causes the metal to be released into the solution over time.…”

Section: Determination Of Optimum Contact Timementioning

confidence: 99%

Kinetics study of copper (Cu) and chromium (Cr) adsorption using green mussel shells (Perna viridis) adsorbent

2023

View full text Add to dashboard Cite

Research has been carried out on making green mussel shell adsorbents to absorb Cu and Cr metals. The study of making green mussel shell adsorbents was carried out by thermal activation using a furnace. The results of the activated adsorbent were characterized using FTIR and SEM-EDX. Furthermore, the adsorbent was used to absorb Cu and Cr metal by using several variations, namely variations in the temperature of the adsorbent activation, adsorbent weight, pH, and contact time, and knowing the kinetic model by determining the reaction order. The results obtained from the characterization of green mussel shells contain elements of Ca, about 67.56% at an activation temperature of 500 °C and 67.34% at an activation temperature of 900 °C. The optimum conditions for Cu metal adsorption by green shell adsorbent were obtained at an activation temperature of 500 °C, using an adsorbent of 1 gram under pH 10 and a contact time of 40 minutes. Whereas for Cr metal absorption, the activation temperature was 900 °C, the mass used was 1.5 grams with pH 7 and the contact time was 40 minutes. The adsorption kinetics model of green mussel shells adsorbent on Cu and Cr metals followed pseudo-second-order.

show abstract

The analysis of characterization of zeolite modified from fly ash using iron oxide and manganese oxide

Saputro,

Mahardiani,

Masykuri

et al. 2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Fly ash is the residue from burning coal in the form of fine and light particles and can be harmful to the environment and life. Whereas fly ash contains high silica so that it can be used as a precursor for zeolite blinding. Zeolite as an adsorbent for aquatic waste needs to be improved so that it can absorb more adsorbate. Therefore, it is necessary to modify the zeolite from fly ash, such as coating with manganese and iron oxide. The zeolite is made from fly ash extraction and synthesize using hydrothermal method. In this study, it was found that fly ash contains about 45.20% silica and the synthetic zeolite was successfully coated with manganese and iron oxide evidenced by the results of FTIR and XRD. This is indicated by the presence of manganese oxide at an absorption of 453.29 cm−1 using FTIR and manganese oxide on XRD aimed at 2θ = 37.356°; 47.337°; 51,879°; 57.966°; 61.822° and 67.5552°. Meanwhile, the FTIR results of iron oxide were indicated by the presence of an absorption band at 447.50 cm−1 and XRD diffraction peaks at 2θ = 30,643° and 2θ = 60,322°.

show abstract

Adsorpsi Ion Logam Kromium Heksavalen Cr (VI) Dalam Larutan Menggunakan Zeolit Berlapis Oksida Mangan (MnO2)

Cited by 3 publications

References 6 publications

High-Efficiency Adsorption of Hexavalent Chromium from Aqueous Solution by Samanea saman Activated Carbon

High-Efficiency Adsorption of Hexavalent Chromium from Aqueous Solution by Samanea saman Activated Carbon

Kinetics study of copper (Cu) and chromium (Cr) adsorption using green mussel shells (Perna viridis) adsorbent

The analysis of characterization of zeolite modified from fly ash using iron oxide and manganese oxide

Contact Info

Product

Resources

About