Ball milling pretreatment, ultrasonic irradiation assistance, and their combination were found to effectively improve the holocellulose dissolution in [C4mim]Cl. The effects of ultrasound power and irradiation duration on the dissolution time of ball-milled holocelluloses in [C4mim]Cl were studied.
Ball milling: a green technology for the preparation and functionalisation of nanocellulose derivatives. Carmen C. Piras a, Susana Fernández-Prieto b and Wim M. De Borggraeve * a a Molecular Design and Synthesis, Department of Chemistry, KU Leuven – University of Leuven, Celestijnenlaan 200F, Box 2404, B-3001 Leuven, Belgium.
As the most abundant aromatic compounds, lignin is still underutilized due to its relatively low quality. In order to improve its quality, two pretreatment technologies, wet ball milling (WBM) and ionic liquid pretreatment (ILP) were tested on the industrial lignin and evaluated on the average molecular weight and polydispersity, surface morphology, and functional groups changes.
The ball-milling-pretreated cellulose can be directly used for the following conversion reactions. To further improve the efficiency of ball milling, in this work, coupling application of liquid nitrogen (LN) and ball milling was developed for the pretreatment of cellulose.
Lignocellulosic biomass pretreatment is a key step to determine the efficacy of biofuel production because of the recalcitrance of lignocellulosic feedstock. The effects of various water inputs, i.e., 0, 25, 100, and 400% (w/w), on the ball milling pretreatment of corn stover and enzymatic hydrolysis were studied under two milling temperatures ...
In this work, a novel pretreatment strategy through combination of ball-milling and LiCl/DMSO dissolution and regeneration was developed, and its effect on bagasse enzymatic hydrolysis was investigated. The results showed that, after ball-milling, the bagasse crystallinity and average particle size were declined from 48.1% to 22.6% and 118.6 μm–20.7 μm, respectively, however, its surface ...
2D transition metal carbide/nitride have demonstrated wide application potential in energy storage and composites. In this article, a kind of 2D sheet structures of Ti 3 C 2 T x MXenes were prepared through ball milling pretreatment, followed by mild etching with HCl and LiF. After ball grinding, the size of Ti 3 AlC 2 was uniform and D 50 decreases from 4.488 μm to 1.454 μm, which is ...
consumption, the LN−BM treatment of cellulose for ball-milling time of 2 h is appropriate, and the sample of LN−BM-2 was used in the following studies. To prove the function of liquid nitrogen on the ball-milling pretreatment of cellulose, untreated cellulose and cellulose treated by sole ball milling were used as control groups to produce ...
In this study, bleached softwood kraft pulp was subjected to high-efficiency wet ball milling (following enzymatic pretreatment) and mechanical grinding to obtain CNF. The effects of ball milling time, grinding gap, and grinding passes on structure and properties of CNF were evaluated.
Aqueous swelling pretreatment of cellulose was found highly effective for reactive ball milling to prepare surface-esterified cellulose nanofibers. Compared with starting from dry cellulose, water- or 2 % NaOH-pre-swollen materials were esterified and dispersed in significantly shorter milling time. Especially commercial kraft pulp was difficult to disperse even with water pretreatment, but 2 ...
Ball Milling Pretreatment. The ball milling (BM) pretreatment was performed according to the method reported by Silva et al. . Raw materials (2-mm particle size, dried in vacuo at 40 °C) were treated using the Pulverisette 5 planetary ball mill (Fritsch, Germany).
Ball Milling for Biomass Fractionation and Pretreatment . A promising approach in the selective separation and modification of cellulose from raw biomass under a mild alkali process was proposed In our study ball milling was applied to wheat straw prior to alkali treatment With ball milling
Mixed ball-milling of cellulose and solid acid catalyst is a highly effective pretreatment technology for the hydrolytic-hydrogenation of cellulose to sugar alcohols. Compared with traditional single ball-milling, the mixed ball-milling process showed a higher sugar alcohol yield at a shorter ball-milling time due to the significantly enhanced ...
In the present work, ball milling was applied for the pretreatment of lignocellulose to obtain high conversion and bio-oil yield in supercritical ethanol. Ball milling substantially decreased the ...
from softwood pulp by ball milling. The effects of ball milling conditions including the ball-to-cellulose mass ratio, milling time, ball size, and alkaline pretreatment were investigated. Postproduction-treatments such as dimensional homogenization were also studied. In this study, CNF was obtained from bleached softwood kraft pulp (BSKP), and ...
Sant Ana da Silva et al. performed a comparative analysis on effects of ball milling and wet disk milling on treating sugarcane bagasse and straw and found ball milling better pretreatment method than wet disk milling in terms of glucose and xylose hydrolysis yields. Ball milling-treated bagasse and straw produced 78.7 and 72.1 and 77.6 and 56 ...
The goal of dry-Chemomechanical pretreatment in a planetary ball mill is to intensify the process by increasing the contact between the biomass particles and chemical catalyst.
A combined ball milling and ethanol organosolv process is proposed for the pretreatment of three types of herbaceous biomass, giant miscanthus, corn stover, and wheat straw.
of ball-milling pretreatment and/or ultrasound irradiation, as shown in Table 1. The complete dissolution of holocellulose in [C 4mim]Cl was monitored with the dark eyeshot of a polarizing light microscope. The dissolution process under the polarizing microscope is shown in Fig. 1. Bright structures were observed inthe ball-milled (1.5 h)
Effect of ball-milling pretreatment on pyrolysis characteristics of cellulose was studied by thermogravimetric analysis (TGA) at four different heating rates; 5, 10, 20, and 40 K/min. Variation in the thermal stability and activation energy of cellulose with ball-milling were calculated by TGA Kinetics using Kissinger, Kissinger–Akahira–Sunose, Flynn–Wall–Ozawa and Starink model free ...
Ball milling pretreatment was found to be an efficient method to promote the catalytic conversion of lignocellulosic biomass to ethylene glycol (EG). After 3-6 h ball milling of Miscanthus at 450 ...
In a study performed by Huang et al. dilute-alkali assisted ball milling of bagasse and pennisetum was employed, having NaOH concentrations ranging from 0.25% to 4.0%, followed by mild hydrothermal pretreatment at 80 or 100 °C. The highest reducing sugar yield from bagasse (40.75%) was achieved using 4% NaOH at 100 °C for 40 min for bagasse ...
The schematic illustration of ball milling pretreatment facilitated α-amylase hydrolysis of cassava starch for the production of bio-latex with high performance is shown in Fig. 1.Cassava starch powder was obtained from the plant tubers via a traditional grinding-sieving-drying process (Agi et al., 2019), followed by the ball milling treatment as shown in the schematic, during which the ...
Ball milling pretreatment for 120 min, enzyme loading of 2 FPU/g 58.5% glucose Planetary ball milling Corn stover Ball milling time of 60 min for alumina and zirconia and 40 min for steel balls Alumina balls: 91.9%; steel balls: 82.9%; zirconia balls: 66.6% glucose ...
ball milling. Ball milling has been accepted as a routine pretreatment process for various materials for particle size reduction due to its simplicity, use of relatively inexpensive equipment, and versatility (Nemoto et al. 2017; Zhang et al. 2015). Ball milling has also been used as a powerful tool to alter the
Adding a mechanical pretreatment (e.g., ball milling) further improves digestibility. This study determines the effectiveness of OLP and ball milling to enhance the ruminant digestibility of lignocellulose. For forage sorghum, the 48-h in vitro TDN were 40, 64, and 84 g nutrients digested/100 g organic matter (OM) for raw, short-term OLP, and ...
A planetary ball milling was applied as a pretreatment of chitin powder to prepare precursors for chitin nanofiber (ChNF) production. The study aims to examine the effects of ball milling conditions (dry milling, and wet milling in neutral and acidic aqueous medium) on the degree of pre-fibrillation of the ChNF precursors and the characteristics of the resulting nanofibers.
Starch based bio-latex has been widely researched in the coating paper area for the purpose of partial replacement of petroleum-based binders. In this paper, a green and facile ball milling pretreatment was proposed to modify the starch granules before α-amylase hydrolysis by breaking up their cryst …
Impact of ball-milling pretreatment on pyrolysis behavior and kinetics of crystalline cellulose Waste Biomass Valoriz., 7 ( 3 ) ( 2016 ), pp. 571 - 581, 10.1007/s12649-015-9460-6 CrossRef View Record in Scopus Google Scholar
Oil palm empty fruit bunch (EFB) fibres were pretreated by ball milling (BM) at different durations of times. The pretreated fibres were characterised by wide angle X-ray diffraction analysis, particle-size distribution and scanning electron microscopy while the effectiveness of the pretreatment was correlated with the yield of acid hydrolysis to produce levulinic acid (LA).
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