Reduction of Offensive Odor from Natural Rubber Using Zinc‐Modified Bentonite

Pajarito, Bryan B.; Castañeda, Kayla C.; Jeresano, Sofia Denise M.; Repoquit, Dominique Ann N.

doi:10.1155/2018/9102825

Cited by 10 publications

(5 citation statements)

References 33 publications

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“…In the low-frequency region, the strong band at 1050 cm -1 indicates Si-O stretching vibrations in the bentonite plane, the peak at 916 cm -1 was associated with Al-OH-Al, the adsorption band in 620 cm -1 represents vibrations in the Al-O and Si-O planes [14,15]. Furthermore, the low peaks at 674 cm -1 and 710 cm -1 indicate stretching vibrations of Fe-O.…”

Section: Figure 1 Ftir Spectra Of Bentonite and Zn/fe Pillared Bentonitementioning

confidence: 99%

Isotherm and Thermodynamics Study of Congo Red and Procion Red Adsorption over Natural and Zn/Fe Pillared Bentonite

Desnelli¹,

Yohandini²,

Nurnawaty³

et al. 2022

IJFAC

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The effect of initial Congo Red and Procion Red concentration on isotherm adsorption and thermodynamic adsorption study using natural and Zn/Fe Pillared bentonite have been conducted. The adsorbents were also characterized by Fourier transform infrared (FTIR), X-Ray Diffraction (XRD), and Scanning electron microscope-energy dispersive X-Ray analysis (SEM-EDX). The study showed that the optimum dye removal of Congo Red and Procion Red was obtained at the initial dye concentration of 80 mg/L. The adsorption isotherm study showed that the Congo Red and Procion Red adsorption on natural and Zn/Fe Pillared bentonite followed the Freundlich isotherm model. The adsorption thermodynamics study showed that the adsorption of Congo Red and Procion Red occurred endothermically, wheraas the positive value of entropy indicated a high level of disorder of adsorption for both dyes. Furthermore, the FTIR, XRD, and SEM-EDX analysis showed that the pillarization of Zn/Fe on bentonite successfully well occurred, and it could be concluded that the adsorption of Congo Red using natural and Zn/Fe pillared bentonite showed a better adsorption process than Procion Red.

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Section: Figure 1 Ftir Spectra Of Bentonite and Zn/fe Pillared Bentonitementioning

confidence: 99%

Isotherm and Thermodynamics Study of Congo Red and Procion Red Adsorption over Natural and Zn/Fe Pillared Bentonite

Desnelli¹,

Yohandini²,

Nurnawaty³

et al. 2022

IJFAC

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“…Produksi pengolahan karet alam terdiri dari proses basah dan proses kering 4 . Tiap-tiap proses produksi ini menghasilkan polutan H2S di udara [5][6][7][8] . Di setiap area kerja terdapat konsentrasi H2S yang berbeda-beda 9,10 .…”

Section: Pendahuluanunclassified

Dampak Paparan Gas Hidrogen Sulfida (H2S) Terhadap Kadar Gula Darah Pada Pekerja Pabrik Crumb Rubber Di Kota Palembang Sumatera Selatan

Oktriyedi

Irfannuddin²,

Ngudiantoro³

et al. 2021

Sanitasi

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Hydrogen sulfide (H2S) is one of the pollutants in the air. One of the industries that cause H2S odor is the natural rubber industry. Exposure to H2S has an impact on increasing blood sugar levels. High blood sugar levels can lead to diabetes. Diabetes mellitus can increase risks such as myocardial infarction, stroke, kidney failure, lower extremity amputation and vision loss. Based on this, the authors are interested in studying the impact of exposure to H2S gas on blood glucose levels in crumb rubber factory workers in the city of Palembang. This study is a cross-sectional analysis. The study was conducted at the crumb rubber factory in Palembang City in March 2020. The sampel this study with a total of 215 workers. Data analysis using chi square with p <0.05. The results of the analysis concluded that there was no relationship between age (pV=0.758), gender (pV=0.532), smoking (pV=1,000), body mass index (pV=0.571), exposure to H2S gas (pV=0.772) with blood glucose levels. This is probably because the main role of H2S in the pancreas is to protect pancreatic B cells and regulate insulin secretion. H2S can protect pancreatic b cells in the following three ways: (1) reducing ROS production; (2) inhibits the expression of thioredoxin binding protein-2-a redox protein associated with diabetes that promotes apoptosis; and (3) increased GSH content, all of which reduce oxidative stress damage.

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“…At present, research into the rubber industry mainly focuses on the exhaust gas emission characteristics and terminal treatment technology of raw rubber material treatment [ 22 , 23 , 24 , 25 ]; there is less literature reporting on the composition and concentration of pollutants emitted by processes from recycled rubber plants [ 26 ]. Based on the above background, in this study, we selected VOCs from different processes in a typical recycled rubber plant in Shanxi Province for detection and analysis and then the emission characteristics of VOCs were studied deeply, the industry markers were determined, and the health risks were evaluated.…”

Section: Introductionmentioning

confidence: 99%

Emission Characteristics and Health Risks of Volatile Organic Compounds (VOCs) Measured in a Typical Recycled Rubber Plant in China

Wang

Yan

Gao

et al. 2022

IJERPH

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The continued development of the automotive industry has led to a rapid increase in the amount of waste rubber tires, the problem of “black pollution” has become more serious but is often ignored. In this study, the emission characteristics, health risks, and environmental effects of volatile organic compounds (VOCs) from a typical, recycled rubber plant were studied. A total of 15 samples were collected by summa canisters, and 100 VOC species were detected by the GC/MS-FID system. In this study, the total VOCs (TVOCs) concentration ranged from 1000 ± 99 to 19,700 ± 19,000 µg/m3, aromatics and alkanes were the predominant components, and m/p-xylene (14.63 ± 4.07%–48.87 ± 3.20%) could be possibly regarded as a VOCs emission marker. We also found that specific similarities and differences in VOCs emission characteristics in each process were affected by raw materials, production conditions, and process equipment. The assessment of health risks showed that devulcanizing and cooling had both non-carcinogenic and carcinogenic risks, yarding had carcinogenic risks, and open training and refining had potential carcinogenic risks. Moreover, m/p-xylene and benzene were the main non-carcinogenic species, while benzene, ethylbenzene, and carbon tetrachloride were the dominant risk compounds. In the evaluation results of LOH, m/p-xylene (25.26–67.87%) was identified as the most key individual species and should be prioritized for control. In conclusion, the research results will provide the necessary reference to standardize the measurement method of the VOCs source component spectrum and build a localized source component spectrum.

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Reduction of Offensive Odor from Natural Rubber Using Zinc‐Modified Bentonite

Cited by 10 publications

References 33 publications

Isotherm and Thermodynamics Study of Congo Red and Procion Red Adsorption over Natural and Zn/Fe Pillared Bentonite

Isotherm and Thermodynamics Study of Congo Red and Procion Red Adsorption over Natural and Zn/Fe Pillared Bentonite

Dampak Paparan Gas Hidrogen Sulfida (H2S) Terhadap Kadar Gula Darah Pada Pekerja Pabrik Crumb Rubber Di Kota Palembang Sumatera Selatan

Emission Characteristics and Health Risks of Volatile Organic Compounds (VOCs) Measured in a Typical Recycled Rubber Plant in China

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