Browsing by Author "Lu, Xingmei"

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    Highly efficient one-pot bioethanol production from corn stalk with biocompatible ionic liquids
    (Elsevier Ltd., 2023-05) Zhu, Qingqing; Gao, Die; Yan, Dongxia; Tang, Jing; Cheng, Xiujie; El Sayed, Ibrahim El Tantawy; El-Gendy, Nour Sh; Lu, Xingmei; Xin, Jiayu
    Efficient utilization of ionic liquids (ILs) for transforming lignocellulose into biofuel and alleviating concerns over shortages of nonrenewable resources is still an urgent issue. Herein, a highly efficient one-pot bioethanol production with biocompatible ILs was designed. XRD, TGA, and DSC analysis showed that pre-treatment of corn stalk with [Ch][Gly] trend to become easier to depolymerize than the untreated sample. Under one-pot process, the efficiency of [Ch][Gly] pretreated method could achieve a 9-fold sugar yield, i.e., 324.7 mg glucose/PU and 131.8 mg xylose/PU (1 PU = 10 g, 3 wt% [Ch][Gly] aqueous). The conditions for the whole process were optimized and the maximum yield% were achieved 80 % for glucose, 79 % for xylose, and 84 % for bioethanol. Besides, we found that increasing surface area and pore size could enhance accessibility for enzymes to attack cellulose and hemicellulose. The proposed study offers an efficient one-pot bioethanol production strategy with sustainable ILs.
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    Nano-Magnetic Sugarcane Bagasse Cellulosic Composite as a Sustainable Photocatalyst for Textile Industrial Effluent Remediation
    (Multidisciplinary Digital Publishing Institute (MDPI), 2024-05) Tony, Maha A; El-Gendy, Nour Sh; Hussien, Mohamed; Ahmed, Abdullah A. S; Xin, Jiayu; Lu, Xingmei; El-Sayed, Ibrahim El Tantawy
    Researchers have focused on deriving environmentally benign materials from biomass waste and converting them into value-added materials. In this study, cellulosic crystals derived from sugarcane bagasse (SCB) are augmented with magnetite (M) nanoparticles. Following the co-precipitation route, the composite was prepared, and then the mixture was subjected to a green microwave solvent-less technique. Various mass ratios of SCB:M (1:1, 2:1, 3:1, 5:1, and 1:2) were prepared and efficiently utilized as photocatalysts. To look at the structural and morphological properties of the prepared samples, X-ray diffraction pattern (XRD), scanning electron microscopy (SEM), and elemental analysis were used to describe the composite fibers. SCB:M augmented with H2O2 as a Fenton reaction was used to eliminate Reactive blue 19 (RB19) from polluted water and was compared with pristine SCB and M. Additionally, the response surface methodology (RSM) statistically located and assessed the optimized parameters. The optimal operating conditions were recorded at pH 2.0 and 3:1 SCB: M with 40 mg/L and 100 mg/L of hydrogen peroxide. However, the temperature increase inhibits the oxidation reaction. The kinetic modeling fit showed the reaction following the second-order kinetic model with an energy barrier of 98.66 kJ/mol. The results show that such photocatalyst behavior is a promising candidate for treating textile effluent in practical applications.