Clean production of corn stover pulp using KOH+NH4OH solution and its kinetic during delignification

Sun, Yunjuan; Yang, Gang; Zhang, Jinping; Yao, Ming-shun

doi:10.2298/ciceq110707055s

Cited by 18 publications

(7 citation statements)

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“…Mapping the operating bioethanol plants in the Netherlands, it was found that none of these feedstocks are used for the production of bioethanol; but most of them are focused on corn stover, a feedstock that contains high amounts of cellulose (43.7%) and hemicellulose (23.7%) [64]. The investigation of the viability and sustainability of bioethanol plants is required, to give insights into new pathways for boosting the bioeconomy [65][66][67][68]. There will be more fermentable sugars available that result in higher ethanol production, and thus, revenue.…”

Section: Resultsmentioning

confidence: 99%

Feasibility Assessment of a Bioethanol Plant in the Northern Netherlands

et al. 2019

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Due to the exhaustion and increased pressure regarding the environmental and political aspects of fossil fuels, the industrial focus has switched towards renewable energy resources. Lignocellulosic biowaste can come from several sources, such as industrial waste, agricultural waste, forestry waste, and bioenergy crops and processed into bioethanol via a biochemical pathway. Although much research has been done on the ethanol production from lignocellulosic biomass, the economic viability of a bioethanol plant in the Northern Netherlands is yet unknown, and therefore, examined. In this thesis, the feasibility study of a bioethanol plant treating sugar beet pulp, cow manure, and grass straw is conducted using the simulation software SuperPro Designer. Results show that it is not economically viable to treat the tested lignocellulosic biomass for the production of bioethanol, since all three original cases result in a negative net present value (NPV). An alternative would be to exclude the pretreatment step from the process. Although this results in a lower production of bioethanol per year, the plant treating sugar beet pulp (SBP) and grass straw (GS) becomes economically viable since the costs have significantly decreased.

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Section: Resultsmentioning

confidence: 99%

Feasibility Assessment of a Bioethanol Plant in the Northern Netherlands

et al. 2019

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“…According to our economical analysis upon current process parameters, the cost-effective availability of hydrochloric acid on-site is achievable, especially for the small or medium scale plant. It is believed that this process will be very suitable for on-site pretreatment and utilization of biomass on a small scale [11]. This is another initiative of this work.…”

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confidence: 91%

Acid hydrolysis of corn stover using hydrochloric acid: Kinetic modeling and statistical optimization

Sun

Yang

Jia

et al. 2014

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Article Highlights• Kinetic parameters of models for predicting xylose, glucose, furfural, acetic acid were obtained • The corn stover during hydrolysis was characterized by FTIR, XRD and SEM techniques • A 2 3 five-level Central Composite Design was used for optimization• The validation of the statistical model indicates good agreement AbstractThe hydrolysis of corn stover using hydrochloric acid was studied. The kinetic parameters of the mathematical models for predicting the yields of xylose, glucose, furfural and acetic acid were obtained, and the corresponding xylose generation activation energy of 100 kJ/mol was determined. The characterization of corn stover using different techniques during hydrolysis indicated an effective removal of xylan and slight alterations of the structures of cellulose and lignin. A 2 3 five-level central composite design (CCD) was used to develop a statistical model for the optimization of process variables including acid concentration, pretreatment temperature and time. The optimum conditions determined by this model were found to be 108 °C for 80 min with acid concentration of 5.8%. Under these conditions, the maximised results were the following: xylose 19.93 g/L, glucose 1.2 g/L, furfural 1.5 g/L and acetic acid 1.3 g/L. The validation of the model indicated good agreement between the experimental results and the predicted values.

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“…4 A palha é constituída basicamente por celulose, hemicelulose e lignina, sendo assim considerada uma fibra natural do tipo lignocelulósica, tornando-se importante o conhecimento de sua composição química. 5 As fibras lignocelulósicas são compostas essencialmente por lignina, celulose (polissacarídeo formado por unidades de monossacarídeos β-Dglucose (1⟶4)), polioses ou hemicelulose (polímero de pequena massa molecular formado por uma variedade de unidades de açúcar, como β-D-xilose, β-D-manose, β-D-arabinose, entre outros) e outros constituintes menores. 6 Destaca-se que a proporção de cada componente difere com a espécie de planta, podendo variar até mesmo dentro de uma única espécie, e com o processo de extração utilizado.…”

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