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Removal of odors and VOCs in municipal solid waste comprehensive treatment plants using a novel three-stage integrated biofilter:Performance and bioaerosol emissions

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Frontiers of environmental Science & engineering 2021年第3期15卷 177-189页

作者： Jianwei Liu Peng Yue Nana Zang Chen Lu Xinyue Chen Beijing engineering Research Center of sustainable Urban Sewage System Construction and Risk Control Beijing University of Civil Engineering and ArchitectureBeijing 100044China Department of environmental Science and engineering Beijing University of Civil Engineering and ArchitectureBeijing 100044China

A novel three-stage integrated biofilter(TSIBF)composed of acidophilic bacteria reaction segment(ABRS),fungal reaction segment(FRS)and heterotrophic bacteria reaction segment(HBRS)was constructed for the treatment of odors and volatile organic compounds(VOCs)from municipal solid waste(MSW)comprehensive treatment *** performance,counts of predominant microorganisms,and bioaerosol emissions of a flill-scale TSIBF system were *** and stable removal efficiencies of hydrogen sulfide,ammonia and VOCs could be achieved with the TSIBF system,and the emissions of culturable heterotrophic bacteria,fungi and acidophilic sulfur bacteria were relatively *** removal efficiencies of different odors and VOCs,emissions of culturable microorganisms,and types of predominant microorganisms were different in the ABRS,FRS and HBRS due to the differences in reaction conditions and mass transfer in each *** emissions of bioaerosols from the TSIBF depended on the capture of microorganisms and their volatilization from the *** rational segmentation,filling of high-density packings and the accumulation of the predominant functional microorganisms in each segment enhanced the capture effect of the bioaerosols,thus reducing the emissions of microorganisms from the bioreactor.

关键词： Biofiltration Multi-stage biofilter Volatile organic compounds Waste gas treatment Bioaerosol emissions

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Simple Preparation of Crystal Co_3(BTC)_2·12H_2O and Its Catalytic Activity in CO Oxidation Reaction

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Journal of Wuhan University of Technology(Materials Science) 2015年第1期30卷 71-75页

作者：谭海燕 LIU Cheng YAN Yunfan 吴金平 School of Chemistry and environmental engineering Hubei University for Nationalities sustainable Energy Laboratory Faculty of Material Science and Chemistry China University of Geosciences

Crystalline metal-organic framework cobalt （II） benzenetricarboxylate C%（BTC）2·12H2O （MOF-Co） has been prepared using solvothermal method. The reaction of cobalt （II） nitrate and 1,3,5-benzenetriearboxylic （BTC） acid in a mixed solution of N,N-dimethylformarnide （DMF）/C2H5OH/H2O （1：1：1, v/v） at low temperature for short reaction times produced this crystalline compound. Compared with traditional hydrothermal method, a mixed solution method for the synthesis of crystalline metal complex was found to be highly efficient. After water molecules were removed from this metal complex, its exposed nodes served as active sites. When this MOF-Co was employed in the oxidation of CO, it showed good catalytic properties causing 100% conversion of CO to CO2 at low temperature of 160 ℃.

关键词： metal-organic framework solvothermal synthesis crystalline compound cobalt catalyst CO oxidation reaction

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Frontier of digitalization in Biomass-to-X supply chain:opportunity or threats?

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Journal of Bioresources and Bioproducts 2023年第2期8卷 101-107页

作者： Adrian Chun Minh Loy Karen Gah Hie Kong Juin Yau Lim Bing Shen How Department of Chemical and Biological engineering Monash UniversityMelbourneAustralia Biomass Waste-to-Wealth Special Interest Group Research Centre for Sustainable TechnologiesFaculty of EngineeringComputing and ScienceSwinburne University of TechnologyKuching 93350Malaysia Integrated engineering Department of Environmental Science and EngineeringCollege of EngineeringKyung Hee UniversityGyeonggi-do 17104Republic of Korea

The escalating climate crisis necessitates an urgent shift towards a sustainable business ***-der the context of bioeconomy,it has offered a promising alternative through its“Biomass-to-X”strategy for converting biological resources into value-added products or ***,the adoption of this approach remains scarce,which highlights the need to leverage digital technolo-gies to enhance its ***,this paper provides a comprehensive overview of the potential role of digital technologies in the Biomass-to-X supply chain,encompassing the entire value chain from upstream to downstream activities,specifically in the areas of 1)lab-to-fabrication transla-tion,2)biomanufacturing stage,and lastly,3)supply chain management ***,this study identifies and discusses research gaps in each niche area,along with potential future re-search prospects to facilitate the transition towards a sustainable bioeconomy,making it a crucial reference for stakeholders involved in decision-making processes.

关键词： Biomass valorization Internet of nano-things Bioeconomy Biomanufacturing Blockchain Biomass-to-X

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LoRa Sense:Sensing and Optimization of LoRa Link Behavior Using Path-Loss Models in Open-Cast Mines

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Computer Modeling in engineering & Sciences 2025年第1期142卷 425-466页

作者： Bhanu Pratap Reddy Bhavanam Prashanth Ragam School of Computer Science and engineering VIT-AP UniversityAmaravati52237India

The Internet of Things(IoT)has orchestrated various domains in numerous applications,contributing significantly to the growth of the smart world,even in regions with low literacy rates,boosting socio-economic *** study provides valuable insights into optimizing wireless communication,paving the way for a more connected and productive future in the mining *** IoT revolution is advancing across industries,but harsh geometric environments,including open-pit mines,pose unique challenges for reliable *** advent of IoT in the mining industry has significantly improved communication for critical operations through the use of Radio Frequency(RF)protocols such as Bluetooth,Wi-Fi,GSM/GPRS,Narrow Band(NB)-IoT,SigFox,ZigBee,and Long Range Wireless Area Network(LoRaWAN).This study addresses the optimization of network implementations by comparing two leading free-spreading IoT-based RF protocols such as ZigBee and *** field tests are conducted in various opencast mines to investigate coverage potential and signal *** is tested in the Tadicherla open-cast coal mine in ***,LoRaWAN field tests are conducted at one of the associated cement companies(ACC)in the limestone mine in Bargarh,India,covering both Indoor-toOutdoor(I2O)and Outdoor-to-Outdoor(O2O)environments.A robust framework of path-loss models,referred to as Free space,Egli,Okumura-Hata,Cost231-Hata and Ericsson models,combined with key performance metrics,is employed to evaluate the patterns of signal *** field testing and careful data analysis revealed that the Egli model is the most consistent path-loss model for the ZigBee protocol in an I2O environment,with a coefficient of determination(R^(2))of 0.907,balanced error metrics such as Normalized Root Mean Square Error(NRMSE)of 0.030,Mean Square Error(MSE)of 4.950,Mean Absolute Percentage Error(MAPE)of 0.249 and Scatter Index(SI)of *** the O2O scenario,the Ericsson model

关键词： Internet of things long range wireless area network ZigBee mining environments path-loss models coefficient of determination mean square error

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Oxidation of As(Ⅲ) by potassium permanganate

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Journal of environmental Sciences 2007年第7期19卷 783-786页

作者： LI Na FAN Maohong Van Leeuwen Johannes Saha Basudeb YANG Hongqun HUANG C. P. Department of Civil Construction and Environmental Engineering Center for Sustainable Environmental Technology Iowa State University Ames Iowa 50011 USA. Center for sustainable environmental Technology Iowa State University Ames Iowa 50011 USA Department of Chemistry Iowa State University Ames Iowa 50011 USA Department of Chemical and Materials engineering University of Alberta Edmonton Alberta T6G 2G6 Canada Department of Civil and environmental engineering University of Delaware Newark DE 19716 USA

The oxidation of As（Ⅲ） with potassium permanganate was studied under conditions including pH, initial As（Ⅲ） concentration and dosage of Mn（Ⅶ）. The results have shown that potassium permanganate was an effective agent for oxidation of As（Ⅲ） in a wide pH range. The pH value of tested water was not a significant factor affecting the oxidation of As（Ⅲ） by Mn（Ⅲ）. Although theoretical redox analyses suggest that Mn（Ⅶ） should have better performance in oxidization of As（Ⅲ） within lower pH ranges, the experimental results show that the oxidation efficiencies of As（Ⅲ） under basic and acidic conditions were similar, which may be due to the adsorption of As（Ⅲ） on the Mn（OH）2 and MnO2 resulting from the oxidation of As（Ⅲ）.

关键词： arsenite arsenate oxidation potassium permanganate

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Enhanced activity of bimetallic Fe-Cu catalysts supported on ceria toward water gas shift reaction: synergistic effect

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Frontiers of Chemical Science and engineering 2023年第12期17卷 1962-1972页

作者： Gianluca Landi Giulia Sorbino Fortunato Migliardini Giovanna Ruoppolo Almerinda Di Benedetto Institute of Sciences and technologies for sustainable Energy and Mobility-CNR Naples 80125Italy Department of Chemical Materials and Production EngineeringUniversity of Naples Federico ⅡNaples 80125Italy

Within the“hydrogen chain”,the high-temperature water gas shift reaction represents a key step to improve the H2 yield and adjust the H2/COx ratio to fit the constraints of downstream *** the commercial application of the high-temperature water gas shift,novel catalysts characterized by higher intrinsic activity(especially at low temperatures),good thermal stability,and no chromium content are *** this work,we propose bimetallic iron-copper catalysts supported on ceria,characterized by low active phase content(iron oxide+copper oxide<5 wt%).Fresh and used samples were characterized by inductively coupled plasma mass spectrometry,X-ray diffraction,nitrogen physisorption,scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy,and temperature programmed reduction in hydrogen to relate physicochemical features and catalytic *** sample with iron/copper≈1 and 4 wt%active phase content showed the best catalytic properties in terms of turnover frequency,no methane formation,and *** unique properties were due to both strong iron-copper interaction and strong metal-support interaction,leading to outstanding redox behavior.

关键词： water gas shift iron copper bimetallic catalysts ceria hydrogen

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Study on the performance of TEG with heat transfer enhancement using graphene-water nanofluid for a TEG cooling system

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Science China(Technological Sciences) 2017年第8期60卷 1168-1174页

作者： LI YiHuai WU ZiHua XIE HuaQing XING JiaoJiao MAO JianHui WANG Yuan Yuan LI Zhen School of environmental and Materials engineering College of EngineeringShanghai Polytechnic University School of environmental and Chemical engineering Shanghai University

Improvement of the heat transfer effect of cold side of a thermoelectric generator(TEG) is one of the approaches to enhance the performance of the TEG *** a new type of heat transfer media,nanofluids can enhance the heat transfer performance of working liquid *** this study,the performance of a commercial TEG with graphene-water(GW) nanofluid as coolants in a minichannel heat exchanger is investigated experimentally at low *** results show that the output power of TEG increases with the flow rate under 950 mL/***,the fluid flow rate has no influence on the output power of TEG with higher flow rate(larger than 950 mL/min) when the heat transfer dynamic balance state of the system is *** optimal concentration and flow rate of nanofluid are 0.1 wt%and 950 mL/min,*** the optimal conditions,the improved voltage,output power and conversion efficiency with GW nanofluid applied in the cooling system are increased by11.29%,21.55%and 3.5%in comparison with those with only water applied,respectively.

关键词： thermoelectric generation graphene-water nanofluid power generation

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The function of doping nitrogen on removing fluoride with decomposing La-MOF-NH_2:Density functional theory calculation and experiments

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Journal of environmental Sciences 2024年第1期135卷 118-129页

作者： Hongguo Zhang KuilinWan Jia Yan Qian Li Yufang Guo Lei Huang Samuel Raj Babu Arulmani Jian Luo School of environmental Science and engineering Guangzhou UniversityGuangzhou 510006China Guangzhou University-Linkoping University Research Center on Urban sustainable Development Guangzhou UniversityGuangzhou 510006China School of Civil and environmental engineering Georgia Institute of TechnologyAtlantaGA 30332USA

Fluoride is an important pollutant in wastewater,and adsorption is an effective way to remove *** nitrogen plays an important role in adsorbent materials,computational models were developed to understand the changes in work function resulting from nitrogen ***-N-C-800℃,was prepared by pyrolyzing La-MOF-NH_(2)to verify the influence on the performance of removing fluoride by *** and electrochemical performance tests were performed to characterize La-N-C-800℃.Adsorption kinetics,adsorption thermodynamics,initial concentrations,pH,and ions competition were investigated using La-N-C-800℃for fluoride *** addition,density functional theory was applied to evaluate the function of *** nitrogen atoms were added,the density of states,partial density of states,populations,and different orbits of charge were calculated to discover deep *** strengthened the carbon structure and La_(2)O_(3)structure to remove *** addition,nitrogen can also act as an adsorption site in the carbon *** results provide design ideas for improving the performance of adsorbent materials by doping elements.

关键词： Capacitive deionization Fluoride La-MOFs Doping nitrogen

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Study of reverse osmosis membranes fouling by inorganic salts and colloidal particles during seawater desalination

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Chinese Journal of Chemical engineering 2020年第3期28卷 733-742页

作者： Santiago Gutiérrez Ruiz Juan Antonio López-Ramírez Mohammed Hassani Zerrouk Agata Egea-Corbacho Lopera JoséMaría Quiroga Alonso Department of environmental technologies Faculty of Marine and Environmental SciencesUniversity of Cadiz11510Puerto RealCadizSpain

Fouling phenomenon is considered among the major reasons that cause significant increase of operating cost of desalination plants equipped with reverse osmosis(RO)*** phenomenon is studied in the present work in the case of RO polyamide aromatic membranes using model seawater containing inorganic salts and colloidal *** solubility conditions of CaCO3 and CaSO4 were applied to study RO performances with and without colloid *** experiments,the membrane permeate fluxes were continuously ***,studies of chemical composition,structure,and morphology of the materials deposited on the membrane surface were conducted using energy dispersive microanalysis(EDS)X-ray diffraction and scanning electronic microscopy(SEM).Results show that in conditions of calcium carbonate oversaturation there is a reduction in the permeate flow of 11.2%due to fouling of the membrane by the precipitation of this *** in the same conditions of calcium sulphate oversaturation the reduction of the flow is 5%,so we can conclude that in conditions of oversaturation of both salts,calcium carbonate produces a greater fouling of the membrane that in its view causes greater decrease in the flow of *** this based on the results of the test with both salts in oversaturated *** in the formation of calcite and gypsum crystals onto the membranes as XRD analyses *** presence of colloidal silica in those conditions intensifies strongly the fouling,leading until to 24.1%of permeate flux decrease.

关键词： Reverse osmosis Desalination Fouling Seawater Scaling

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All-day solar power generation enabled by photo/thermoelectric conversion and thermal energy storage

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Science China Chemistry 2025年

作者： Zijian Liu Chengzhi Chen Junda Liu Qi Sun Bingchen Huo Chunyu Du Guangming Chen College of Materials Science and engineering Shenzhen University

Thermoelectric materials hold promises for direct conversion of heat into electricity, making them viable power sources for electronic devices. However, their practical applications in diverse outdoor environment are hindered by limited and discontinuous electricity output. In this study, we propose an all-day solar power generator to achieve highly efficient and continuous electricity generation by harnessing the synergistic effects of photoelectric-thermoelectric conversion and latent thermal energy storage. The all-day solar power generator exhibits an average open-circuit voltage of 6.8 m V during daylight and a remaining 0.9 mV during nighttime. Importantly, the all-day solar power generator achieves dependable outdoor power supply for communication transmission in diverse environmental scenarios. Our research opens a new way for highly efficient and sustainable power generation.

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