Electrostatic Basis for Separation of Wheat Bran Tissues

Dăscălescu, Lucian; Dragan, Ciprian; Bilici, Mihai; Beleca, Radu; Hémery, Youna; Rouau, Xavier

doi:10.1109/tia.2010.2040050

Cited by 27 publications

(10 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By combining cryogenic or ambient milling with a tribo-ES step in the same device as described above, [21,22] fractionated wheat bran to break down bran tissues to isolate their sub-cellular constituents (cell walls rich in fiber versus cell content rich in micronutrients). Hemery et al observed that the ultrafine bran obtained after cryogenic milling contained more composite particles than ultrafine bran produced by milling at ambient temperature.…”

Section: Separation and Concentration Of Proteins And Fiber In Oil Camentioning

confidence: 99%

“…With the same Dascalescu et al, [21] explored the potential of using a belt-corona separator to separate a mixture of aleurone and bran. The two fractions resulting from the process were respectively a non-conductive fraction attracted by the electrode, which was 20 times richer in bran, and a conductive fraction not attracted by the electrode, which was almost 4 times richer in aleurone Remadnia et al…”

Section: Separation and Concentration Of Proteins And Fiber In Oil Camentioning

confidence: 99%

See 1 more Smart Citation

Electrostatic Separation as an Entry into Environmentally Eco-Friendly Dry Biorefining of Plant Materials

Barakat¹,

Mayer‐Laigle²

2017

J Chem Eng Process Technol

View full text Add to dashboard Cite

Today, most technologies used to fractionate plant materials are based on expensive chemical processes that often have negative environmental impacts by consuming water, energy, and solvents and creating large quantities of effluents. In addition, during the separation step, the major components are often partially degraded. Achieving high fractionation yields while maintaining the integrity of the macromolecular structure is a major challenge for the next generation of biomass refining processes. Electrostatic separation (ES), which enables the production of enriched fractions in compounds of interest while preserving their (native) functionalities has emerged as an ecofriendly biotechnology for the fractionation of agro-resources in dry conditions. In this review, the potential of ES in a biorefinery scheme is evaluated and the technological obstacles that still need to be overcome for its full deployment at industrial scale are identified.

show abstract

Section: Separation and Concentration Of Proteins And Fiber In Oil Camentioning

confidence: 99%

Section: Separation and Concentration Of Proteins And Fiber In Oil Camentioning

confidence: 99%

Electrostatic Separation as an Entry into Environmentally Eco-Friendly Dry Biorefining of Plant Materials

Barakat¹,

Mayer‐Laigle²

2017

J Chem Eng Process Technol

View full text Add to dashboard Cite

show abstract

“…For the medium size frac- tion, as current increased from 14 to 20 μA, the yield of the lifted fraction increased from 4.2 to 10.5%, and NDF content of the lifted fraction decreased from 64.8 to 41.7% (Table I). Dascalescu et al (2010) reported that difference in charge-to-mass ratio of wheat bran and aleurone formed a basis of electrostatic separation. Similarly, it was expected that difference in charge-to-mass ratio between corn fiber and nonfiber particles, that is, corn fiber particles having a higher charge-to-mass ratio compared with the nonfiber particles, caused fiber particles to be selectively lifted at lower electrostatic currents.…”

Section: Effect Of Current On Fiber Separationmentioning

confidence: 99%

“…Differences in dielectric properties could also be taken advantage of by using the electrostatic method and, thus, improve separation efficiencies. Electrostatic properties of wheat bran and its constitutive layers have been studied to separate nutrients from undesirable components of the bran (Hemery et al 2009(Hemery et al , 2011Dascalescu et al 2010). Electrostatic separators have been studied for seed cleaning (Harmond et al 1961).…”

mentioning

confidence: 99%

Fiber Separation from Ground Corn Flour Using an Electrostatic Method

2013

View full text Add to dashboard Cite

Cereal Chem. 90(6):535-539Corn kernels contain 9% fiber by weight, which is not digested well by nonruminants such as chicken and swine. Also, fiber is nonreactive in the dry-grind process for ethanol production and is considered as feedstock for the production of second-generation bioethanol. Fiber separation can enhance starch concentration in animal feed and increase starch loading in ethanol plants. Electrostatic separation is used to separate particles from granular mixtures under the influence of electrical forces. The Elusieve process, a combination of sieving and air classification, separates fiber by taking advantage of differences in size, shape, and density. Differences in dielectric properties could also be exploited for fiber separation. The aim of this study was to evaluate the effectiveness of electrostatic separation of fiber particles from corn. When the electrostatic method was used in conjunction with Elusieve processing, the fiber product had higher neutral detergent fiber (NDF, 52.9%) compared with Elusieve processing alone (NDF of 40.5%). Also, a higher quantity of enhanced flour (95.0% yield) was produced when the electrostatic method was used in conjunction with Elusieve processing compared with Elusieve processing alone (93.0% yield), without any change in quality of the enhanced flour (NDF of 6.6% in both cases). The electrostatic method improved fiber separation when used in conjunction with Elusieve processing.

show abstract

“…The method used to charge the materials is usually one of the three following: corona charging, induction charging, and tribo-electric charging (Mazumder et al, 2006). Because of the distinct properties and compositions of the different bran layers, which results in different tribo-electric charging behaviors, tribo-electric charging is used in the electrostatic separation of wheat bran (Dascalescu et al, 2010;Hemery et al, 2009b). Tribo-electric charging occurs when different materials are charged oppositely upon frictional contact (Higashiyama and Asano, 1998;Kelly and Spottiswood, 1989).…”

Section: Introductionmentioning

confidence: 99%