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Industrial Ramie Growing on Reclaimed Ion-Adsorption Rare Earth Elements Mine Tailings in Southern China: Defibration and Fibers Quality

Abstract : Ramie plants (Boehmeria nivea) have been cultivated on ion-adsorption rare earth elements (REEs) mine tailings and showed a low ability to accumulate REEs, especially in the stems (REE= 24±17 mg kg-1) with higher concentration in leaves and roots (REE= 57 to 66 mg kg-1). Ramie individual fibers were isolated using three degumming processes: a traditional alkali treatment (AT), a steam explosion (SE) treatment after a neutral (SEN) or after a basic (SEB) impregnation. Cellulose-rich (> 80%) fine fibers with very low amounts of non-cellulosic sugars (<5%), low REE concentrations (REE ≈ 4-6 mg kg-1) and a high mechanical strength (tensile strength ≈ 260-540 cN/fiber, breaking point ≈ 20-50 cN/fiber) have been produced. However, SE degumming resulted in more degraded fibers with cracks slightly affecting their tensile properties.
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https://hal.univ-lorraine.fr/hal-03201821
Contributor : Nicolas Brosse <>
Submitted on : Monday, April 19, 2021 - 12:33:09 PM
Last modification on : Saturday, May 1, 2021 - 3:30:11 AM
Long-term archiving on: : Tuesday, July 20, 2021 - 6:39:55 PM

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Cesar Segovia, Mahdi Hedri, Hermine Huot, Isabelle Zigler-Devin, Chang Liu, et al.. Industrial Ramie Growing on Reclaimed Ion-Adsorption Rare Earth Elements Mine Tailings in Southern China: Defibration and Fibers Quality. Waste and Biomass Valorization, Springer, 2021, ⟨10.1007/s12649-021-01442-w⟩. ⟨hal-03201821⟩

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