Purification of Crude Glycerol from Acidification Using Tea Waste

Aziz, Isalmi; Sulistina, Rara Citra; Hendrawati,; Adhani, Lisa

doi:10.1088/1755-1315/175/1/012010

Cited by 4 publications

(4 citation statements)

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“…Selain itu penurunan kadar gliserol disebabkan karena jumlah adsorbat yang terserap pada permukaan adsorben fly ash lebih besar dibandingkan dengan jumlah adsorbat yang ada dalam bentuk pengotor pada larutan. Hal ini didukung pernyataan pada penelitian [14] yakni terjadinya penurunan kemurnian gliserol disebabkan karena penambahan adsorben yang terlalu banyak dan pada waktu yang lama akan menyebabkan jumlah sisi aktif adsorben menjadi lebih banyak jika dibandingkan dengan jumlah adsorbat (impurities) yang diserap, sehingga adsorben ikut mengadsorpsi sebagian besar gliserol. Kondisi ini pun terjadi pada penelitian yang dilakukan oleh [5].…”

Section: Pengaruh Massa Adsorben Terhadap Gliserol Hasil Pemurnianunclassified

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Pemanfaatan Fly Ash sebagai Adsorben dalam Pemurnian Crude Glycerol dari Hasil Produk Samping Biodiesel

Alviany

Novita²,

Pratama³

et al. 2023

JSE

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The increase of biodiesel production capacity is followed by an increase in crude glycerol production as a by-product. Crude glycerol still has a low purity and a lot of impurities so it requires special treatment so that it can be utilized and valuable. One of the ways to increase the purity of crude glycerol is in the adsorption process. This study aims to determine the best conditions for the adsorption process and the characteristics of the glycerol produced after the adsorption process. The initial condition of crude glycerol purity is low, namely 67.8%, so purification is needed. One way of purifying crude glycerol is by physically separating it using fly ash as an adsorbent. The experiment was carried out with the adsorption process using fly ash with the adsorbent mass variable 30,35,40,45, and 50 grams and the adsorption time variable was 50,60, and 70 minutes. The purified products are analyzed quantitatively and qualitatively, including glycerol content, density, viscosity, moisture content, ash, and MONG. The best conditions for the adsorption process using fly ash were obtained at a mass of 50 grams with a time of 50 minutes with the results that the glycerol content was 97.5%, water content 0.03%, ash content 0.0432%, MONG content 2.426%, density 1.253 gr / ml , viscosity 233.56 cP. Based on these results, purified glycerol was obtained that met the quality standards of SNI 06-1564-1995.

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Section: Pengaruh Massa Adsorben Terhadap Gliserol Hasil Pemurnianunclassified

“…Menurut Aziz dkk. [14], penurunan kadar gliserol pada saat adsorpsi disebabkan oleh telah jenuhnya adsorben. Dalam hal ini, semakin lama waktu pengadukan memungkinkan terjadinya proses desorpsi atau pelepasan kembali adsorbat dari adsorben.…”

Section: Pengaruh Waktu Adsorpsi Terhadap Gliserol Hasil Pemurnianunclassified

Pemanfaatan Fly Ash sebagai Adsorben dalam Pemurnian Crude Glycerol dari Hasil Produk Samping Biodiesel

Alviany

Novita²,

Pratama³

et al. 2023

JSE

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Section: Introductionmentioning

confidence: 99%

“…The results of the glycerol quality analysis obtained were 96.2% glycerol levels; ash content 2.08%; MONG content (Matter Organic Non-Glycerol) 1.50%; and the resulting glycerol is colorless or transparent [5]. The purification of crude glycerol was also carried out by Aziz et al, (2019) [5] using acidification and adsorption methods using Lampung natural zeolite. The optimum conditions for zeolite adsorption in crude glycerol purification were obtained at 75 minutes, the zeolite concentration was 12% of the sample mass, the adsorption temperature was 60 ºC, and the zeolite diameter was 0.2 mm with the glycerol quality obtained after the adsorption process at optimum conditions meeting the quality requirements of SNI 06-1564-1995 [8], with a moisture content of 7.38%; ash content 3%; does not contain sugar; and glycerol content of 88.91%.…”

Section: Introductionmentioning

confidence: 99%

Purification of glycerol as a by-product of biodiesel based on palm oil and castor oil

Dimawarnita,

Faramitha

2024

IOP Conf. Ser.: Earth Environ. Sci.

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The government program requires the use of biodiesel B35, which is 35% fatty acid methyl ester and 65% diesel oil from petroleum, which would impact the rise of biodiesel production and is accompanied by an increase in the by-product of crude glycerol. Crude glycerol requires purification to increase its selling value. This product still contains a lot of impurities such as methanol, soap, catalyst, fatty acids, and water. Crude glycerol, a by-product of making biodiesel based on palm oil and castor oil, has a purity of 39.10 and 37.30%. In this research, purification of crude glycerol was carried out using 10% w/v activated carbon. The results of glycerol after purification were 64.90 and 66.90%, it shows that the addition of activated carbon can absorb impurities contained in glycerol. The increase in levels from 37.30 to 64.90% and 66.90% due to the loss of water, alcohol, residue base (KOH), soap and fatty acids. It can be concluded that activated carbon is quite effective for the glycerol purification process with an addition of 10% (w/v). A further process is required, namely separation by distillation, to obtain glycerol with a purity above 80% to comply with SNI 7182-2015 standards.

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Waste‐derived low‐grade glycerol purification and recovery from biorefineries: an experimental investigation

Attarbachi,

Kingsley,

Spallina

2024

Biofuels Bioprod Bioref

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A combination of different physio‐chemical treatment steps was applied to purify industrially derived crude glycerol at laboratory scale. The full process included acid–base treatments, phase separation, and adsorption, and the glycerol purity and recovery were optimized by varying the pH during saponification and acidification, the solvent‐to‐glycerol ratio, and type of base used in the process to enhance both. The testing campaign resulted in a final purity of up to 87% wt starting from a very low‐quality ‘end‐of‐life’ waste glycerol sampled from different refineries. The net glycerol recovery at laboratory scale reached 42% of the initial glycerol in the feedstock and the maximum ash removal exceeded 90% given the low quality of the feedstock and high content of impurities and the attempt to achieve high glycerol recovery. The experiment showed that mild operations such as saponification with KOH (pH of 8), acidification with H3PO4 (pH of 6), an ideal 2‐propanol to glycerol volume ratio equal to 3 and potassium hydroxide as a base for the neutralisation step were the optimum conditions despite the differences between samples. The sequence of the processes proposed was therefore considered a viable option to treat any kind of crude glycerol to make it profitable for fuel and chemical applications.

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Purification of Crude Glycerol from Acidification Using Tea Waste

Cited by 4 publications

References 1 publication

Pemanfaatan Fly Ash sebagai Adsorben dalam Pemurnian Crude Glycerol dari Hasil Produk Samping Biodiesel

Pemanfaatan Fly Ash sebagai Adsorben dalam Pemurnian Crude Glycerol dari Hasil Produk Samping Biodiesel

Purification of glycerol as a by-product of biodiesel based on palm oil and castor oil

Waste‐derived low‐grade glycerol purification and recovery from biorefineries: an experimental investigation

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