Optimizing treatment condition of coir fiber with ionic liquid and subsequent enzymatic hydrolysis for future bioethanol production

Ribeiro, William Cesar de Oliveira; Lima, Ana Cristina da Silva; Morandim-Giannetti, Andreia de Araújo

doi:10.1007/s10570-017-1554-9

Cited by 19 publications

(3 citation statements)

References 25 publications

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“…Experimental Design (ED) is an effective statistical approach to investigate and to optimize multivariate processes. To date, many types of LCB have been pretreated by RTILs and optimized by Response Surface Methodology (RSM) (Bajaj and Wani, 2011; Fu and Mazza, 2011b; Tan et al, 2011; Yoon et al, 2012; Lee et al, 2013; Sidik et al, 2013; Qiu et al, 2014; Singh et al, 2015; Wang et al, 2015; Li et al, 2017; Saha et al, 2017; Oliveira Ribeiro et al, 2018; Trinh et al, 2018). Only very few research groups have investigated the optimum conditions for RTIL-based pretreatment using another statistical design (Elgharbawy et al, 2017; Papa et al, 2017; Vergara et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Wheat Bran Pretreatment by Room Temperature Ionic Liquid-Water Mixture: Optimization of Process Conditions by PLS-Surface Response Design

et al. 2019

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Room Temperature Ionic Liquids (RTILs) pretreatment are well-recognized to improve the enzymatic production of platform molecules such as sugar monomers from lignocellulosic biomass (LCB). The conditions for implementing this key step requires henceforth optimization to reach a satisfactory compromise between energy saving, required RTIL amount and hydrolysis yields. Wheat bran (WB) and destarched wheat bran (DWB), which constitute relevant sugar-rich feedstocks were selected for this present study. Pretreatments of these two distinct biomasses with various 1-ethyl-3-methylimidazolium acetate ([C2mim][OAc])-water mixtures prior to hydrolysis catalyzed by hemicellulolytic cocktail (Cellic CTec2) were finely investigated. The main operating conditions such as pretreatment temperature (25–150°C), time (40–180 min), WB and DWB loading (2–5% w/v) and concentration of [C2mim][OAc] in water [10–100% (v/v)] were screened through glucose and xylose yields and then optimized through a Partial Least Square (PLS)—Second Order Design. In an innovative way, the PLS results showed that the four factors and their interactions could be well-fitted by a second-order model ( p < 0.05). The quadratic PLS models were used to predict optimal pretreatment conditions. Thus, maximum glucose (83%) and xylose (95%) yields were obtained from enzymatic hydrolysis of WB pretreated at 150°C for 40 min with 10% of [C2mim][OAc] in water and 5% of WB loading. For DWB, maximum glucose (100%) and xylose (57%) yields were achieved for pretreatment temperatures of 150°C and 25°C, respectively. The required duration was still 40 min, with 20% of [C2mim][OAc] in water and a 5% DWB loading. Then, Multiple Response Optimization (MRO) performed by Nelder-Mead Simplex Method displayed sugar yields similar to those obtained by individual PLS optimization. This complete statistical study confirmed that the established models were appropriate to predict the sugar yields achieved after different pretreatment conditions from WB and DWB biomasses. Finally, Scanning Electron microscopy (SEM) studies allowed us to establish clearer link between structural changes induced by pretreatment and the best enzymatic performances obtained.

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Section: Introductionmentioning

confidence: 99%

Wheat Bran Pretreatment by Room Temperature Ionic Liquid-Water Mixture: Optimization of Process Conditions by PLS-Surface Response Design

et al. 2019

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“…Some ionic liquids can be used to dissolve cellulosic materials, but limitations exist regarding their usage such as high energy consumption, high cost, and inherent difficulty in solvent recovery (de Oliveira Ribeiro et al 2018;Zhu et al 2018a). N-methylmorpholine-N-oxide monohydrate (NMMO•H2O), an organic solvent, has also been used to dissolve cellulose.…”

Section: Cellulose Propertiesmentioning

confidence: 99%

Cellulose and its derivatives: towards biomedical applications

et al. 2021

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Cellulose is the most abundant polysaccharide on Earth. It can be obtained from a vast number of sources, e.g. cell walls of wood and plants, some species of bacteria, and algae, as well as tunicates, which are the only known cellulose-containing animals. This inherent abundance naturally paves the way for discovering new applications for this versatile material. This review provides an extensive survey on cellulose and its derivatives, their structural and biochemical properties, with an overview of applications in tissue engineering, wound dressing, and drug delivery systems. Based on the available means of selecting the physical features, dimensions, and shapes, cellulose exists in the morphological forms of fiber, microfibril/nanofibril, and micro/nanocrystalline cellulose. These different cellulosic particle types arise due to the inherent diversity among the source of organic materials or due to the specific conditions of biosynthesis and processing that determine the consequent geometry and dimension of cellulosic particles. These different cellulosic particles, as building blocks, produce materials of different microstructures and properties, which are needed for numerous biomedical applications. Despite having great potential for applications in various fields, the extensive use of cellulose has been mainly limited to industrial use, with less early interest towards the biomedical field. Therefore, this review highlights recent developments in the preparation methods of cellulose and its derivatives that create novel properties benefiting appropriate biomedical applications.

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“…To date, a variety of physical or chemical methods have been employed to modify coir fiber with the aim of achieving better interfaces and mechanical properties. − Graphene nanosheets have been proven to be an effective lubricant additive and incorporated into the ceramic, metal, and polymer matrix to prepare advanced composites with excellent friction and wear properties. For example, He et al adopted molybdenum trioxide nanobelt/graphene oxide (GO) film modified glass fiber to reinforce epoxy and antiwear performance was improved by more than 4 times.…”

Section: Introductionmentioning

confidence: 99%

Engineering Interfaces toward High-Performance Polypropylene/Coir Fiber Biocomposites with Enhanced Friction and Wear Behavior

Liu

Wang

et al. 2019

ACS Sustainable Chem. Eng.

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High-performance natural plant fibers reinforced polymer biocomposites with excellent friction and wear properties hold significant practical applications in industry. Unfortunately, it remains a major challenge to engineer the interfacial interactions between the fibers and the polymer matrix, which determines the mechanical and wear properties of the final composites. Herein, we engineer the coir fiber surface by depositing polyethylenimine (PEI) and graphene nanosheets and then prepare the polypropylene/coir fiber biocomposites. As compared with unmodified coir fibers, graphene decorated coir fibers can remarkably reduce the friction and wear, with the lowest friction coefficient at 0.19 and wear rate at 3.5 × 10–7 g/r. The excellent friction-reducing and wear-resistance performances are mainly attributed to three factors, namely the enhanced interfacial bonding, optimized crystallinity, and the formation of a transfer film. The transfer film is comprised of a polypropylene, PEI, and graphene nanosheets. This work provides a facile methodology for the design of high-performance polymer biocomposites with enhanced friction and wear behaviors. The results can also contribute to expand the practical applications of polymer biocomposites in industry.

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Optimizing treatment condition of coir fiber with ionic liquid and subsequent enzymatic hydrolysis for future bioethanol production

Cited by 19 publications

References 25 publications

Wheat Bran Pretreatment by Room Temperature Ionic Liquid-Water Mixture: Optimization of Process Conditions by PLS-Surface Response Design

Wheat Bran Pretreatment by Room Temperature Ionic Liquid-Water Mixture: Optimization of Process Conditions by PLS-Surface Response Design

Cellulose and its derivatives: towards biomedical applications

Engineering Interfaces toward High-Performance Polypropylene/Coir Fiber Biocomposites with Enhanced Friction and Wear Behavior

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