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Ion Exchange Softening and alkalization Treatment for Zerodischarge of Circulating Cooling Water

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Journal of Electromagnetic Analysis and Applications 2009年第1期1卷 6-10页

作者： Huiming Zeng Jiuyang Lin Chunsong Ye Lihui Tong Xiaolan Chen Fei Yu School of Power and Mechanical Engineering Wuhan University Wuhan China

In order to solve the problems including pipe corrosion, scaling and microbial growth, which severely threat safe op-eration of circulating cooling water system, this paper proposes ion exchange softening and alkalization process to solve these problems and carries out a series of studies to study the feasibility of ion exchange softening and alkaliza-tion process in the simulation process of circulating cooling water system. The studies include product water quality of ion exchange softening and alkalization process, effect on the performance of carbon steel and brass, and the inhibition that suppresses microbial growth. The results indicate that ion exchange softening and alkalization process is feasible to prevent the circulating cooling water system from scaling, pipe corrosion, and microbial growth without any other chemicals. Thus circulating cooling water system can achieve zerodischarge of wastewater.

关键词： Ion Exchange Softening and alkalization Circulating Cooling Water Zerodischarge

Abaca Fiber as a Potential Reinforcer for Acoustic Absorption Material at Middle-High Frequencies

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Journal of Renewable Materials 2024年第5期12卷 909-921页

作者： Susilo Indrawati Lila Yuwana Suyatno Mochamad Zainuri Darminto Department of Physics Faculty of Science and Data AnalyticsInstitut Teknologi Sepuluh NopemberSurabaya60111Indonesia

Recently,abacaﬁbers have become the focus of specialized research due to their intriguing characteristics,with their outstanding mechanical properties being a particularly *** the conducted study,the abacaﬁbers underwent a preliminary treatment process involving an alkaline solution,which was composed of 0.5%sodium hydroxide(NaOH)and 50%acetic acid(CH3COOH).This process entailed immersing eachﬁber in the solution for a period of one *** treatment led to a 52.36%reduction in lignin content compared to the levels before treatment,resulting in a dramatic decrease in the full width at half maximum(FWHM)in the XRD spectra from 1.13 to *** change indicates that theﬁbers became more crystalline following the *** abacaﬁbers were also characterized using BET(Brunauer Emmett Teller)measurements,which revealed that the aver-age pore length ranged from 33–49 nm and the surface area was between 13–28 m^(2)·g^(-1).The morphology of the abacaﬁber after alkali an hydrolisis treatment(AFAH)appeared rougher and more *** measurements revealed a signiﬁcant rise in the storage modulus of the singleﬁber post-treatment,with dependencies on both frequency and *** exhibited an optimal absorption coefﬁcient ofα=0.9 for frequencies above 2500 *** combined effect of alkalization and hydrolyzation treatments,while resulting in an enhancement in the mechanical properties of theﬁbers,also reduced high-intensity noise produced by sources such as machin-ery,aircraft takeoffs and landings,etc.,across a broader working frequency range.

关键词： Abacaﬁber alkalization mechanical property acoustic characteristics middle frequency

Slow degrading Mg-based materials induce tumor cell dormancy on an osteosarcoma-fibroblast coculture model

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Bioactive Materials 2022年第10期7卷 320-333页

作者： Philipp Globig Regine Willumeit-Römer Fernanda Martini Elisa Mazzoni Berengere J.CLuthringer-Feyerabend Institute of Metallic Biomaterials Helmholtz-Zentrum Hereon21502GeesthachtGermany Department of Medical Sciences University of Ferrara44121FerraraItaly

Osteosarcoma is one of the most common cancers in young adults and is commonly treated using surgery and *** the past years,these therapy approaches improved but failed to ameliorate the ***,novel,targeted therapeutic approaches should be established to enhance treatment success while preserving patient’s quality of *** studies suggest the application of degradable magnesium(Mg)alloys as orthopedic implants bearing a potential antitumor ***,we examined the influence of Mg-based materials on an osteosarcoma-fibroblast ***,Mg and Mg-6Ag did not lead to tumor cell apoptosis at low degradation ***,the Mg-based materials induced cellular dormancy in the cancer cells indicated by a lower number of Ki-67 positive cancer cells and a higher p38 *** dormancy-like state could be reversed by reseeding on non-degrading glass slides but could not be provoked by inhibition of the protein kinase R-like endoplasmic reticulum *** investigating the influence of the disjunct surface-near effects of the Mg degradation on cell proliferation,an increased pH was found to be a main initiator of Mg degradation-dependent tumor cell proliferation inhibition.

关键词： Cancer Magnesium degradation Ki-67 Proliferation inhibition pH alkalization

Properties of Natural Rubber Biocomposities Filled with Alkaline Modified Oat Straw

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Journal of Renewable Materials 2018年第7期6卷 746-754页

作者： Marcin Masłowski Justyna Miedzianowska Krzysztof Strzelec Institute of Polymer&Dye Technology Lodz University of TechnologyStefanowskiego 12/1690-924 LodzPoland

Novel elastomer biocomposites based on straw fibers (raw or chemically modified) as reinforcing elements ofnatural rubber (NR) were reported and studied. Oat straw fibres with different average lengths were *** materials were incorporated into the elastomer, before and after chemical surface modificationinvolving sodium hydroxide. Fourier transform infrared spectroscopy (FTIR) and microscopy techniques wereemployed for characterization of fillers. The kinetics of rubber mixtures, as well as rheometric properties ofcompounds were determined. The cross-linking density was executed on the basis of equilibrium solventswellingmeasurements applying the modified Flory–Rehner equation. The morphology of biocompositessamples was analyzed by a scanning electron microscopy. Mechanical characteristic: the values of hardness,tensile strength and attenuation coefficient were also determined. The physical and chemical investigations haveproved the reinforcing effect of treated oat straw on natural rubber vulcanizates.

关键词： alkalization biocomposites natural fibres natural rubber straw

The Photocatalytic Oxidation of As（Ⅲ） Enhanced by Surface Alkalinized g-C3N4

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天津大学学报：英文版 2020年第1期26卷 40-48页

作者： Tao Yu Zhen Liu Jian Ma Xin Tan School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China School of Environmental Science and Engineering Tianjin UniversityTianjin 300350China

A new,facile,and efficient way to prepare alkalinized g-C3N4 is *** calcined a mixture of KCl and melamine to obtain g-C3N4,whose in-plane structure was K+doped so that alkalinized samples could be obtained by treatment with different concentrations of *** different samples were used to oxidize As(Ⅲ)in both visible light and natural *** sample treated with 10 mol/L KOH showed the highest efficiency,converting all As(Ⅲ)into As(Ⅴ)within 120 min in both visible light and natural light,as the oxidative capacity of the As(Ⅲ)in the alkalinized samples was significantly higher than that of the original samples.K+doping improved the electron transport capacity of the samples,while the alkalinized samples could destroy their edge structures,so as to improve the separation efficiency of the photogenerated *** experiment confirmed that alkalinized g-C3N4 significantly improves the oxidation ability of As(Ⅲ)and plays an important role in the photocatalytic treatment of refractory nonmetallic ions.

关键词： Photocatalysis g-C3N4 alkalization K^+doping As(Ⅲ)