Progress, prospect and challenges in glycerol purification process: A review

Abstract

a b s t r a c tGlycerol surplus in recent decades due to global increase in biodiesel production has created a new form of challenge in terms of purification for crude glycerol. This review summarizes the progress of crude glycerol purification technologies using various techniques. Critical insights are given regarding the application of suitable techniques for crude glycerol purification which includes chemical pre-treatment, methanol removal, vacuum distillation, ion exchange, activated carbon and membrane separation technology. Extensive discussion is made in relation with stages and processes in the conventional, current and emerging glycerol purification technologies. Lastly, aspects concerning the challenges of glycerol utilization and purification are thoroughly discussed.

Teknologi Proses Pembuatan Molecular Sieve TiZA Untuk Pemekatan Asam Nitrat

“…Tetapi dengan teknologi yang ada sekarang, tidak tercapai kemurnian yang dibutuhkan untuk proses pembuatan bahan baku propelan seperti nitrogliserin (Ardi, Aroua, dan Hashim 2015) Alternatif penyelesaian masalah ini adalah dengan menggunakan molecular sieve. Prinsip kerja molecular sieve ini adalah memisahkan suatu komponen terhadap komponen lain dalam campuran berdasarkan ukuran, bentuk dan sifat bahan.…”

Comparison of two Variable Interpolation Methods for Predicting the Vapour Pressure of Aqueous Glycerol Solutions

“…The details can be found in Ref. [2] as well. This method requires that the domain of the function we are approximating is…”

“…In our computations, we used cubic splines as described in Refs. [2], [8] and [9]. The approximating function S(x, y) for our glycerol data is plotted in Fig.2, detailed numeric values can be found in Table S1.…”

“…These processes are important in the cosmetic industry [1][2][3]. During the atmospheric evaporation of highly concentrated glycerol solutions, glycerol molecules condense by losing water and convert into acrolein or polyglycerols.…”

Estudo Do Comportamento Da Ultrafiltração De Misturas Contendo Glicerina

“…Segundo Tan et al (2013) para a produção de 10 kg de biodiesel por meio do processo de transesterificação se produz aproximadamente 1 kg de glicerina bruta. Além disso, segundo Quispe et al (2013) De acordo com Ardi et al (2015) existem várias técnicas de purificação da glicerina, por exemplo, destilação a vácuo, adsorção por troca iônica, adsorção utilizando carvão ativado, tecnologia de separação por membranas, entre outras. No processo de separação por membranas é imprescindível a existência de uma forca motriz, que pode ser um gradiente de pressão ou de concentração.…”