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Because of the abundance and renewability of lignocellulosic biomass, lignocellulose-derived biofuels and chemicals are promising alternatives to fossil resources. In this study, we developed a strategy for pretreating lignocellulose (corn stover) using a sodium hydroxide-urea solution (SUs) and evaluated changes in the efficiency and structure. The results showed that treatment with 6% NaOH/12% urea at 80 °C for 20 min gave a glucose yield of 0.54 g/g corn stover. Recycling of the NaOH/urea was also explored, and the average glucose yield over four pretreatment cycles was 0.44 g/g corn stover. The structural characteristics of corn stover were investigated by scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy and gas chromatography-mass spectrometry. Compared with untreated corn stover, NaOH/urea-pretreated corn stover had more micropores, mesopores, and macropores, higher crystallinity, and a higher cellulose content. This pretreatment process is economical and efficient and has good application prospects for lignocellulose biorefinery.
This article was published in the following journal.
Name: Bioresource technology
The anaerobic digestion (AD) performance of corn stover was investigated under low hydrothermal pretreatment (HP) severity. Pretreated corn stover, with and without ammonia was examined at the three t...
A better understanding of biomass usability during storage would offer basis for management decisions in production. High-moisture corn stover was ensiled with sulfuric acid (HSO, 0.3% and 0.6%) or so...
Pretreatment is a key step in the energy utilization of lignocellulosic biomass. Different types of pretreatments (ultrafine grinding pretreatment, alkaline hydroxide peroxide pretreatment, dilute aci...
MgO is an effective catalyst to reduce the recalcitrant structure of corn stover and reduce sugar degradation during pretreatment. To evaluate the economic feasibility of MgO pretreatment, techno-econ...
In this short-term study a method for the evaluation of the metabolic competency of the urea cycle in vivo will be assessed. In order to monitor the efficacy of new treatment options for p...
OBJECTIVES: I. Assess the safety and efficacy of sodium phenylbutyrate, sodium benzoate, sodium phenylacetate, and dietary intervention in patients with urea cycle disorders.
Urea cycle disorders are inherited illnesses in which the body does not produce enough of the chemicals that remove ammonia, a byproduct of protein metabolism, from the blood stream. Eleva...
The purpose of this study is to investigate the effects of 3 different corn flours: (1) whole grain corn flour, (2) 50% refined corn flour + 50% corn bran derived from whole corn meal, and...
Fluid management of children during neurosurgery is not well established. Hypotonic solutions, commonly still used in pediatric patients, may enhance cerebral edema and worse operative con...
Generally speaking, it is the alkaline substance obtained from wood ashes by percolation. Preparations of lye can be solutions of either potassium or sodium hydroxide. The term lye, is also used to refer to the household product which is a mixture of sodium hydroxide and sodium carbonate.
A highly caustic substance that is used to neutralize acids and make sodium salts. (From Merck Index, 11th ed)
The trihydrate sodium salt of acetic acid, which is used as a source of sodium ions in solutions for dialysis and as a systemic and urinary alkalizer, diuretic, and expectorant.
Sterile solutions, essentially free from foreign particles and suitably compounded and dispensed, for instillation into the eye. It does not include solutions for cleaning eyeglasses or CONTACT LENS SOLUTIONS. (From Dorland, 27th ed)
Syrup made from corn used widely in foods and beverages as a cheaper alternative sweetener to SUCROSE (common table sugar). It is generated by enzymatic processing of natural corn syrup to produce a liquid most widely composed of 42 or 55% FRUCTOSE, GLUCOSE, and various POLYSACCHARIDES.
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...
Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...