Dilute acid pretreatment of pine needles of Pinus roxburghii by response surface methodology for bioethanol production by separate hydrolysis and fermentation

Slathia, Parvez Singh; Raina, Neelu; Kiran, A.; Kour, Rizem; Bhagat, Deepali; Sharma, Preeti

doi:10.1007/s13399-019-00433-1

Cited by 31 publications

(16 citation statements)

References 43 publications

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“…By 2030, international energy demands are envisaged to increase by 53% [ 1 ]. Nowadays, fossil fuels are the world’s primary energy source with an estimated share of total final energy consumption of 79.9% [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Bioethanol Production from Enzymatic Treatment of Argan Pulp Feedstock

et al. 2021

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Argan pulp is an abundant byproduct from the argan oil process. It was investigated to study the feasibility of second-generation bioethanol production using, for the first time, enzymatic hydrolysis pretreatment. Argan pulp was subjected to an industrial grinding process before enzymatic hydrolysis using Viscozyme L and Celluclast 1.5 L, followed by fermentation of the resulting sugar solution by Saccharomyces cerevisiae. The argan pulp, as a biomass rich on carbohydrates, presented high saccharification yields (up to 91% and 88%) and an optimal ethanol bioconversion of 44.82% and 47.16% using 30 FBGU/g and 30 U/g of Viscozyme L and Celluclast 1.5 L, respectively, at 10%w/v of argan biomass.

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Section: Introductionmentioning

confidence: 99%

“…Bioethanol is actually the most produced biofuel, corresponding to about 59% of biofuel production in 2019 in terms of energy [ 1 ]. It represents a sufficient and ecofriendly alternative, taking into account that it can be used in gasoline engines and modified engines in high proportions.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Bioethanol Production from Enzymatic Treatment of Argan Pulp Feedstock

et al. 2021

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“…Slathia et al, 58 conducted a study to observe how much pretreatment with HCl using CCD would increase the reducing sugar ratio of Pinus roxburghii (PNPR), which is one of the lignocellulosic wastes. As a result, 0.2 g g −1 reducing sugar was achieved at 1% (vol/vol) HCl concentration, 121°C, and 1 hour retention time with a biomass loading of 5% (wt/vol).…”

Section: Resultsmentioning

confidence: 99%

Statistical optimization of dilute acid pretreatment of lignocellulosic biomass by response surface methodology to obtain fermentable sugars for bioethanol production

et al. 2021

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Central composite design to optimize sugar recovery from cotton straw and sunflower straw using dilute acid pretreatment was applied. Selected input variables were acid concentration, retention time, and temperature, as well as the response parameter of sugar yield. The optimum pretreatment conditions observed for maximum sugar yield are temperature: 121.7 C, acid concentration: 2.28% (vol/vol), and time: 36.82 minutes for cotton straw; temperature: 87.03 C, and acid concentration: 3.68% (vol/vol), and time: 36.82 minutes for sunflower straw.Maximum sugar concentrations were corresponded to 20 and 17.5 g L −1 under conditions for sunflower and cotton straw, respectively. This study not only investigates the sugar recovery efficiency statistically but also examines the ethanol production efficiency. As a result, the maximum ethanol concentration, ethanol yield, and ethanol productivity of 7.21 g L −1 , 0.41 g g −1 , and 0.10 g L −1 h −1 for cotton straw and 8.05 g L −1 , 0.40 g g −1 , and 0.11 g L −1 h −1 for sunflower straw were achieved via fermentation with Saccharomyces cerevisiae, respectively. The output of this study is important for the commercialization of bioprocesses that enable the conversion of the lignocellulosic waste matrix into high value-added products in a biorefinery concept.

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“…If these needles were harvested, they could constitute a resource for producing biofuel or other bioproducts that do not require extensive grinding. Dilute acid pretreatment for pine needles has been studied by Slathia et al [7]. A continuous pyrolysis of pine needles at 500 • C was successfully proven to produce bio-oil by Mandal et al [8].…”

Section: Introductionmentioning

confidence: 99%

Pretreatment of Loblolly Pine Tree Needles Using Deep Eutectic Solvents

Gujjula

Kumar

Lynam

2021

Biomass

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Deep eutectic solvents (DES) are new ‘green’ solvents that have a high potential for biomass processing because of their low cost, low toxicity, biodegradability, and easy recycling. When Loblolly pine trees are harvested, their branches with needles are typically left in brush piles and decompose very slowly. Exploring the effect of DES pretreatment on waste pine needles was the goal of the present work. Loblolly pine needles were treated with three types of DES to prepare the biomass for enzymatic hydrolysis to glucose, a subject not readily found in the literature. The resulting products were analyzed by Fourier transform infrared spectroscopy, fiber analysis, and high-performance liquid chromatography. Glucose yields after pretreatment and hydrolysis were found to be six times that for untreated biomass with two of the DES. Fiber analysis indicated removal of lignin, hemicellulose, and ash from the needle biomass. Enhanced glucose yield was due to removal of lignin and disruption of biomass structure during pretreatment, so that the pretreated biomass was rich in cellulosic content. Based on the results shown in this study, among the three types of DES, formic acid:choline chloride and acetic acid:choline chloride pretreatment had better potential for biomass pretreatment compared to lactic acid:choline chloride.

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Dilute acid pretreatment of pine needles of Pinus roxburghii by response surface methodology for bioethanol production by separate hydrolysis and fermentation

Cited by 31 publications

References 43 publications

Optimization of Bioethanol Production from Enzymatic Treatment of Argan Pulp Feedstock

Optimization of Bioethanol Production from Enzymatic Treatment of Argan Pulp Feedstock

Statistical optimization of dilute acid pretreatment of lignocellulosic biomass by response surface methodology to obtain fermentable sugars for bioethanol production

Pretreatment of Loblolly Pine Tree Needles Using Deep Eutectic Solvents

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