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Open AccessArticle

Purification of Methylsulfonylmethane from Mixtures Containing Salt by Conventional Electrodialysis

by Xinlai Wei 1,2, Yaoming Wang 1,*, Haiyang Yan 1, Ke Wu 2 and Tongwen Xu 1,*
1
CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026, China
2
Collaborative Innovation Center for Environmental Pollution Precaution and Ecological Rehabilitation of Anhui, School of Biology, Food and Environment Engineering, Hefei University, Hefei 230601, China
*
Authors to whom correspondence should be addressed.
Membranes 2020, 10(2), 23; https://doi.org/10.3390/membranes10020023
Received: 24 December 2019 / Revised: 30 January 2020 / Accepted: 30 January 2020 / Published: 1 February 2020
(This article belongs to the Special Issue Ion-Exchange Membranes and Processes)
Methylsulfonylmethane (MSM) is one of the main sources of sulfur for living bodies, but it is hard to obtain as a pure compound. Conventional electrodialysis (CED) is a mature technology that can be used for the separation and purification of biochemical products. In this study, the purification of MSM from mixtures containing salt was performed by CED. The effects of operating conditions such as operation voltage drop, feed MSM concentration, and electrolyte salt concentration on the separation performances were investigated. The results showed that the current efficiency reached 74.0%, and the energy consumption could be 12.3 Wh·L−1. As for the recovery rate and desalination rate, the highest recovery rate could be 97.4%, and the desalination rate was 98.5%. Based on process energy consumption calculation, the total cost of the whole process was estimated at only 2.34 $·t−1. Thus, CED is highly efficient and cost-effective for the separation and purification of MSM.
Keywords: conventional electrodialysis; methylsulfonylmethane; separation; current efficiency conventional electrodialysis; methylsulfonylmethane; separation; current efficiency
MDPI and ACS Style

Wei, X.; Wang, Y.; Yan, H.; Wu, K.; Xu, T. Purification of Methylsulfonylmethane from Mixtures Containing Salt by Conventional Electrodialysis. Membranes 2020, 10, 23.

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