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Valorization of wheat bran arabinoxylan: A review on nutritional and materials perspectives

Grain & Oil Science and Technology 2024年第3期 196-208页

作者： Muhammad Bilal Dandan Li Chong Xie Runqiang Yang Zhenxin Gu Dong Jiang Xueming Xu Pei Wang College of Food Science and Technology Whole Grain Food Engineering Research Center Nanjing Agricultural University The Sanya Institute of Nanjing Agricultural University national Technique Innovation center for Regional Wheat Production/Key Laboratory of Crop Physiology Ecology and Management Ministry of Agriculture/National Engineering and Technology Center for Information Agriculture Nanjing Agricultural University Key Laboratory of Food Science and Technology School of Food Science and Technology Jiangnan University

Wheat bran, a principal byproduct of flour milling, stands as an abundant source of dietary fiber, yet its economic potential remains under-exploited in current forage applications. Arabinoxylan(AX), constituting the core of dietary fiber, emerges as a versatile compound with multifaceted functionalities. Its nutritional significance,coupled with its role in cereal food processing, has prompted a surge of studies focusing on the valorization of wheat bran AX. Moreover, the hydrolyzed derivative, arabinoxylan oligosaccharides(AXOS), demonstrates prebiotic and antioxidant properties, offering potential avenues to mitigate the risk of chronic diseases. This review summarizes current knowledge on the valorization of wheat bran AX in terms of the processing and nutritional properties of AX. Moreover, multiple novel applications of AX in the materials area, including biodegradable food packaging films, delivery of bioactive substances as nanoparticles, and the manufacture of food emulsifiers, are also highlighted to extend the utilization of AX. This review underscores the immense potential of wheat bran AX, advocating for its exploitation not only as a nutritional asset but also as a primary ingredient in advanced materials. The synthesis of nutritional and materials perspectives accentuates the multifaceted utility of wheat bran AX, thereby paving the way for sustainable valorization pathways. By unraveling the latent potential within AX, this paper advocates for the holistic and sustainable utilization of wheat bran in diverse, value-added applications.

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Effect of bastnaesite as reductant on hematite reduction during in-situ suspension magnetization roasting of refractory iron ore under neutral atmosphere

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International Journal of Mining Science and Technology 2022年第4期32卷 877-886页

作者： Wenbo Li Jijia Chen Wentao Zhou Yuexin Han Yan Shan School of Resources and Civil engineering Northeastern UniversityShenyang 110819China national-local joint engineering research center of High-Efficient Exploitation Technology for Refractory Iron Ore Resources Shenyang 110819China

The iron tailings of Bayan Obo mines are solid waste,which occupies land area and also causes environmental pollution;however,this waste can be *** this study,based on the characteristics of iron minerals and fluorocarbonate contained in Bayan Obo iron tailings,clean magnetization roasting of iron minerals by bastnaesite from iron tailings during in-situ suspension magnetization roasting in a neutral atmosphere was *** results show that for iron tailings with a mass of 12 g,a N_(2) gas flow rate of 600 mL/min,and roasting for 5 min at 800℃,iron concentrate with a 60.44%iron grade at an iron recovery of 76.04%could be obtained.X-ray diffraction analysis showed that the weak magnetic hematite was reduced to strong magnetic magnetite in the neutral atmosphere,without additional *** kinetics of the magnetization roasting of mineral mixtures(bastnaesite and hematite)in a neutral atmosphere showed that the optimal reaction mechanism function was the three-dimensional diffusion model with activation energy of 161.8838 kJ·mol^(-1);this indicates that the reaction was a heterogeneous,diffusion-controlled solid-state reaction.

关键词： Bayan Obo iron tailings In-situ suspension roasting Clean recovery Phase magnetic transformation Kinetics mechanism

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A new strategy for obtaining highly concentrated phosphorus recovery solution in biofilm phosphorus recovery process

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Journal of Environmental Sciences 2022年第2期34卷 366-375页

作者： Wanjing Yang Jie Shan Yang Pan Zhen Bi Yong Huang Hao Zhang Min Ni School of Environmental Science and engineering Suzhou University of Science and TechnologySuzhou 215009China national&local joint engineering Laboratory for Municipal Sewage Resource utilization Technology Suzhou University of Science and TechnologySuzhou 215009China

Recovery of phosphorus(P)from wastewater is of great significance for alleviating the shortage of P *** present,the P recovery process is faced with the problem of excessive organic carbon consumption when obtaining a P-concentrated recovery *** study proposed a new strategy to obtain a more highly concentrated P recovery solution with minimal carbon consumption by strengthening the P storage capacity of the biofilm.A biofilm sequencing batch reactor(BSBR)process was modified to treat synthetic *** effect of the dissolved oxygen(DO)concentration on the P storage capacity of the biofilm was investigated at DO concentrations of DO 3.5 mg/L(P_(L))and DO 6.5 mg/L(P_(H)).The results showed a maximum P storage of 101.2 and 149.6 mg-P/g-mixed liquid suspended solids under the two *** the P storage capacity of the biofilm resulted in a net increase in the P recovery rate,which was as high as 66.96%in a harvesting cycle,and total soluble P>220 mg/L in the P recovery solution was successfully ***,the carbon cost of P recovery in the BSBR was reduced to 41.57 g-chemical oxygen demand/gP,and the carbon utilization efficiency was *** highlight the new strategy,the P recovery performance of the BSBR was given and the relationship between P content and anaerobic P release was *** addition,the changes in the microbial communities under P_(L) and P_(H) conditions were analyzed.

关键词： Biofilm sequencing batch reactor Phosphorus storage capacity Phosphorus release Phosphorus recovery

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Decentralized Primary Frequency Regulation for Hybrid Multi-terminal Direct Current Power Systems Considering Multi-source Enhancement

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Journal of Modern Power Systems and Clean Energy 2024年第3期12卷 958-970页

作者： Jialiang Wu Zhen Wang Ruixu Liu Yu Shan Chenxuan Wang the College of Electrical engineering Zhejiang UniversityHangzhou 310027China the Economic research Institute of State Grid Zhejiang Electric Power Co. Ltd.Hangzhou 310016China

Hybrid multi-terminal direct current(MTDC)transmission technology has been a research focus,and primary frequency regulation(FR)improvement in the receiving-end system is one of the problems to be *** paper presents a decentralized primary FR scheme for hybrid MTDC power systems considering multi-source enhancement to help suppress frequency disturbance in the receiving-end *** the converters only need local frequency or DC voltage signal input to respond to system disturbance without communication or a control center,i.e.,a decentralized control *** proposed scheme can activate appropriate power sources to assist in FR in various system disturbance severities with fine-designed thresholds,ensuring sufficient utilization of each power *** better balance FR performance and FR resource participation,an evaluation index is proposed and the parameter optimization problem is further ***,the validity of the proposed scheme is verified by simulations in MATLAB/Simulink.

关键词： Decentralized control scheme primary frequency regulation(FR) rate of change of frequency(ROCOF) system frequency disturbance

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Feasible fabrication of o-phenanthroline-based polymer adsorbent for selective capture of aqueous Ag(Ⅰ)

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Chinese Chemical Letters 2023年第3期34卷 191-194页

作者： Xuan Ding Wanjun Yu Xin Sheng Hui Shi Deng You Mingming Peng Penghui Shao Liming Yang Lingling Liu Xubiao Luo Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China national-local joint engineering research center of Heavy Metals Pollutants Control and Resource utilization Nanchang Hangkong UniversityNanchang 330063China

Devising a desirable adsorbent for efficiently selective capture of Ag(Ⅰ) from wastewater has attracted much attention but faced with huge challenges. Herein, a novel linear o-phenanthroline-based polymer L-PRL was prepared via chemical oxidative polymerization for the adsorption of Ag(Ⅰ). The maximum adsorption capacity for Ag(Ⅰ) by L-PRL is 325.8 mg/g at pH 0. In addition, L-PRL owes ascendant selectivity for Ag(Ⅰ) from aqueous solutions containing various interfering metal ions of Pb(Ⅱ), Co(Ⅱ), Ni(Ⅱ), Cd(Ⅱ)and Fe(Ⅲ). Multiple characterizations of FT-IR and XPS uncover that the N groups on L-PRL act as adsorption sites to coordinate with Ag(Ⅰ). Density functional theory(DFT) calculations further evidence the mechanism that L-PRL is provided with the admirable adsorptivity and selectivity for Ag(Ⅰ). It is mainly attributed to the most stable complexes of L-PRL with Ag(Ⅰ), which possesses shortest Ag-N bond length compared with other heavy metal ions. Furthermore, 93.5% of initial adsorption capacity is reserved after four continuous regeneration cycles, indicating that L-PRL is equipped with superior recyclability and durability, and L-PRL is capable of removing Ag(Ⅰ) in low-concentration actual Ag(Ⅰ)-containing wastewater completely. This study shed light on the rational design of polymer adsorbents and in-depth insight into selective removal of aqueous Ag(Ⅰ).

关键词： Wastewater o-Phenanthroline Polymer Adsorbent Ag(Ⅰ) Selective capture

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Source identification and prediction of nitrogen and phosphorus pollution of Lake Taihu by an ensemble machine learning technique

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Frontiers of Environmental Science & engineering 2023年第5期17卷 27-40页

作者： Yirong Hu Wenjie Du Cheng Yang Yang Wang Tianyin Huang Xiaoyi Xu Wenwei Li CAS Key Laboratory of Urban Pollutant Conversion Department of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China School of Software engineering University of Science and Technology of ChinaHefei 230026China USTC-CityU joint Advanced research center Suzhou Institute for Advanced Research of USTCSuzhou 215123China national and local joint engineering Laboratory for Municipal Sewage Resource utilization Technology Suzhou University of Science and TechnologySuzhou 215009China

Effective control of lake eutrophication necessitates a full understanding of the complicated nitrogen and phosphorus pollution sources,for which mathematical modeling is commonly *** contrast to the conventional knowledge-based models that usually perform poorly due to insufficient knowledge of pollutant geochemical cycling,we employed an ensemble machine learning(ML)model to identify the key nitrogen and phosphorus sources of *** ML models were developed based on 13 years of historical data of Lake Taihu’s water quality,environmental input,and meteorological conditions,among which the XGBoost model stood out as the best model for total nitrogen(TN)and total phosphorus(TP)*** results suggest that the lake TN is mainly affected by the endogenous load and inflow river water quality,while the lake TP is predominantly from endogenous *** prediction of the lake TN and TP concentration changes in response to these key feature variations suggests that endogenous source control is a highly desirable option for lake eutrophication ***,one-month-ahead prediction of lake TN and TP concentrations(R2 of 0.85 and 0.95,respectively)was achieved based on this model with sliding time window lengths of 9 and 6 months,*** work demonstrates the great potential of using ensemble ML models for lake pollution source tracking and prediction,which may provide valuable references for early warning and rational control of lake eutrophication.

关键词： Eutrophication Machine learning Water quality Nutrients Prediction

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Zinc modification of Ni-Ti as efficient Ni_(x)Zn_(y)Ti_(1)catalysts with both geometric and electronic improvements for hydrogenation of nitroaromatics

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Frontiers of Chemical Science and engineering 2022年第4期16卷 461-474页

作者： Pingle Liu Yu Liu Yang Lv Wei Xiong Fang Hao Hean Luo College of Chemical engineering National&Local United Engineering Research Center for Chemical Process Simulation and IntensificationXiangtan UniversityXiangtan 411105China

The catalytic hydrogenation of nitroaromatics is an environmentally friendly technology for aniline production,and it is crucial to develop noble-metal-free catalysts that can achieve chemoselective hydrogenation of nitroaromatics under mild reaction *** this work,zinc-modified Ni-Ti catalysts(Ni_(x)Zn_(y)Ti_(1))were fabricated and applied for the hydrogenation of nitroaromatics *** was found that the introduction of zinc effectively increases the surface Ni density,enhances the electronic effect,and improves the interaction between Ni and TiO_(2),resulting in smaller Ni particle size,more oxygen vacancies,higher dispersion and greater concentration of Ni on the catalyst ***,the electron-rich Ni^(δ-) obtained by electron transfer from Zn and Ti to Ni effectively adsorbs and dissociates *** results reveal that Ni_(x)Zn_(y)Ti_(1)(Ni_(0.5)Zn_(0.5)Ti_(1))shows excellent catalytic performance under mild conditions(70℃and 6 bar).These findings provide a rational strategy for the development of highly active non-noble-metal hydrogenation catalysts.

关键词： bimetal strategy oxygen vacancy non-noble metal catalyst hydrogenation aromatic nitro compounds

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Selective preparation for biofuels and high value chemicals based on biochar catalysts

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Frontiers in Energy 2023年第5期17卷 635-653页

作者： Hui LI Changlan HOU Yunbo ZHAI Mengjiao TAN Zhongliang HUANG Zhiwei WANG Lijian LENG Peng LIU Tingzhou LEI Changzhu LI State Key Laboratory of utilization of Woody Oil Resource Hunan Academy of ForestryChangsha 410004China College of Environmental Science and engineering Hunan UniversityChangsha 410082China School of Environmental engineering Henan University of TechnologyZhengzhou 450001China School of Energy Science and engineering Central South UniversityChangsha 410083China national-local joint engineering research center of Biomass Refining and High-Quality utilization Institute of Urban and Rural MiningChangzhou UniversityChangzhou 213164China

The reuse of biomass wastes is crucial toward today’s energy and environmental crisis,among which,biomass-based biochar as catalysts for biofuel and high value chemical production is one of the most clean and economical *** this paper,the recent advances in biofuels and high chemicals for selective production based on biochar catalysts from different biomass wastes are critically *** topics mainly include the modification of biochar catalysts,the preparation of energy products,and the mechanisms of other high-value *** biochar catalysts can enhance the yield of biofuels and higher-value ***,the feedstock and reaction conditions of biochar catalyst,which affect the efficiency of energy products,have been the focus of recent *** studies based on biochar catalysts will be helpful to the controlled ***,the design and advancement of the biochar catalyst based on mechanism research will be beneficial to increase biofuels and the conversion efficiency of chemicals into *** advanced design of biochar catalysts and optimization of operational conditions based on the biomass properties are vital for the selective production of high-value chemicals and *** paper identifies the latest preparation for energy products and other high-value chemicals based on biochar catalysts progresses and offers insights into improving the yield of high selectivity for products as well as the high recyclability and low toxicity to the environment in future applications.

关键词： biomass biochar catalysts biofuels high chemicals

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Thermogravimetric study of combustion of biomass and anthracite coal by iso-conversional method

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Journal of Iron and Steel research(International) 2018年第3期25卷 330-339页

作者： Dong Wang Si-yi Luo Yang-min Zhou Chui-jie Yi national and local joint engineering research center of Metallurgical Slag Efficient Resource utilization QingdaoTechnological University Qingdao 266520 Shandong China

The combustion characteristics of biomass, anthracite coal and their blends were investigated using thermogravimetry, and the kinetic parameters and combustion reaction mechanisms were tested by combining the iso-conversional method and Avrami method in order to find out the kinetics characteristics responsible for the combustion of samples. In biomass combustion, two peaks were observed at 332.3 and 472.3℃, but the reactive rate curve of coal showed one peak with maximum mass loss rate at 552.8℃. The ignition temperature and burnout temperature of blends decreased, and the ignition index and combustibility index increased with the increase in biomass content. Calculation of kinetic parameters showed that the values of activation energy of blends increased with increasing biomass content from 150.77 to 215.93 kJ/mol. The reaction orders of blends lay in the range of 0.44 and 0.78.

关键词： Biomass-Pulverized coal Combustion-Kinetics Thermogravimetry Iso-conversional method

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Novel BiOBr/Bi2S3 high-low junction prepared by molten salt method for boosting photocatalytic degradation and H_(2)O_(2)production

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Journal of Materials Science & Technology 2023年第24期155卷 148-159页

作者： Shishi Shen Xibao Li Yingtang Zhou Lu Han Yu Xie Fang Deng Juntong Huang Zhi Chen Zhijun Feng Jilin Xu Fan Dong School of Materials Science and engineering Nanchang Hangkong University Nanchang 330063 China national-local joint engineering research center of Heavy Metal Pollutants Control and Resource utilization Nanchang Hangkong University Nanchang 330063 China national engineering research center for Marine Aquaculture Marine Science and Technology College Zhejiang Ocean University Zhoushan 316004 China School of Materials and Metallurgy University of Science and Technology Liaoning Anshan 114051 China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu 611731 China

The molten salt method focuses on improving the crystallinity of synthetic materials and avoiding the high energy consumption of traditional synthesis *** this work,a novel BiOBr/Bi_(2)S_(3)high-low junction with large contact area was constructed by the molten salt method combined with the ion exchange *** unique energy band structure and new charge transfer mechanism realize the rapid migration of photogenerated charges between different ***,Bi_(2)S_(3)was grown on BiOBr in situ by a high-temperature molten salt *** to the deep valence band position of BiOBr and the narrow band gap of Bi_(2)S_(3),an intrinsic internal electric field and band bending are produced at the interface,forming a high-low junction photocatalyst with an intimate *** addition,the BiOBr/Bi_(2)S_(3)composite maintains a high oxidation potential and produces high and robust photocatalytic oxidation *** the molten state,the close binding of BiOBr and Bi_(2)S_(3)can be promoted through the ion-exchange strategy,resulting in excellent photocatalytic degradation rates of bisphenol A and tetracycline and in-situ generation of H_(2)O_(2).Finally,the mechanism of carriers separation and transfer in BiOBr/Bi_(2)S_(3)high-low junction is also *** functional theory(DFT)results found that the improvement of O_(2)adsorption ability would promote the occurrence of oxygen reduction reaction(ORR),and make positive contributions to the enhanced H_(2)O_(2)production *** study will provide a new perspective for broadening the spectral response range of Bi-based photocatalytic materials and preparing high-low junction photocatalysts with dense interface by the molten salt method.

关键词： Photocatalysis BiOBr Bi_(2)S_(3) High-low junction Molten salt

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