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Thermal cracking of waste printed wiring boards for mechanical recycling by using residual steam preprocessing

Yao CHEN, Jinhui LI, Huabo DUAN, Zhishi WANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 167-174 doi: 10.1007/s11783-011-0308-4

Abstract: A thermal-crack method using residual steam as the heating medium has been developed to pre-treat wasteThe results showed that thermal cracking with steam at the temperature of 500 K can effectively attenuate

Keywords： waste printed wiring board (PWB)     residue steam     thermal-crack     mechanical properties    

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Chromium steel from chromite ore processing residue----A valuable construction material from a waste

Jay N. MEEGODA, Wiwat KAMOLPORNWIJIT

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 159-166 doi: 10.1007/s11783-011-0325-3

Abstract: As species we humans generate excessive amounts of waste and hence for sustainability we should explore innovative ways to recover them. The primary objective of this study is to demonstrate an efficient and optimum way to recover chromium and iron from chromite ore processing residues (COPR) for the production of chrome steel and stainless steel. In Hudson County, New Jersey, there are more than two million tons of leftover COPR. Part of COPR was used as fill materials for construction sites, which spread the problem to a larger area. With high solubility along with their toxicity leached chromate from COPR is threatening the environment as well as human health. In this research, COPR was thermally treated to recover iron with chromium by applying techniques used in steel manufacturing. An extensive experimental program was performed using a Thermo-Gravimetric Analyzer (TGA) and bench scale tests to thermally treat the processed chromium contaminated soils with carbon and sand at varying temperatures and under reducing environment. The optimum chemical composition of COPR and additives to be used in the melts were evaluated based upon the thermodynamic properties of the mixture to ensure good phase separation, least amounts of iron and chromium oxides in the slag and minimum variability of final product (steel or iron with chromium). The impact of other oxides on the steel making process was evaluated to minimize the adverse impact on the process. The research demonstrated the feasibility of recovering a valuable construction material (chrome steel) from a waste (COPR).

Keywords： chromite ore processing residue     chromium steel     reduction     thermal treatment     beneficial use    

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Emission factors of gaseous carbonaceous species from residential combustion of coal and crop residue

Qin WANG, Chunmei GENG, Sihua LU, Wentai CHEN, Min SHAO

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 1,   Pages 66-76 doi: 10.1007/s11783-012-0428-5

Abstract: The s from crop residue briquette burning were generally higher than those from coals, with the exceptionwhile C2 unsaturated hydrocarbons were the dominant species (68.9%) emitted from the combustion of crop residueEmissions from the combustion of crop residue briquettes from stoves occurred mainly during the smoldering

Keywords： residential combustion     coal     crop residue briquette     emission factors     gaseous carbonaceous species    

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Environmental, social, and economic assessment of energy utilization of crop residue in China

Yueling ZHANG, Junjie LI, Huan LIU, Guangling ZHAO, Yajun TIAN, Kechang XIE

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 308-319 doi: 10.1007/s11708-020-0696-x

Abstract: The system boundaries include crop residue collection, transportation, pre-treatment, and conversionThe results show that the energy utilization of crop residue has carbon emission factors of 0.09–0.18

Keywords： crop residue     life cycle assessment     life cycle cost     social life cycle assessment     energy production    

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Assessing the potential of crop residue recycling in China and technology options based on a bottom-up

Lili QU,Tianzhu ZHANG,Wei LU

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 4,   Pages 570-579 doi: 10.1007/s11783-013-0604-2

Abstract: Taking 2010 as the baseline year, the CRRC model is used to determine the quantity trends of crop residueresources, simulating the recycling potential and selecting key crop residue recycling technologiesThe results illustrate that the total residue output from different crops will gradually increase toThe proportion of crop residue for field burning is expected to decrease as a result of guidance andMarket mechanisms are also improving the development of the crop residue recycling industry.

Keywords： China     crop residue     recycling potential     technology options    

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Porous silica synthesis out of coal fly ash with no residue generation and complete silicon separation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 9, doi: 10.1007/s11783-023-1712-2

Abstract:

● Both amorphous and crystalline silicon are completely separated from coal fly ash.

Keywords： Coal fly ash     Alkali fusion     Micro-/meso-porous Si     Zeolite MCM-48     Crystalline transformation    

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Modeling analysis on solar steam generator employed in multi-effect distillation (MED) system

Zhaorui ZHAO, Bao YANG, Ziwen XING

Frontiers in Energy 2019, Volume 13, Issue 1,   Pages 193-203 doi: 10.1007/s11708-019-0608-0

Abstract: Specifically, the effects of operating parameters, such as the motive steam temperature, seawater flowproduced have been investigated in the MED desalination system combined with the bilayer wood solar steamIt is found that, under a given operating condition, there exists an optimum steam generation temperatureThis parametric simulation study will help the design of efficient bilayer wood solar steam generator

Keywords： solar energy     steam generating     multi-effect desalination    

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Intrinsic kinetics and external diffusion of catalytic steam gasification of fine coal char particles

Xuantao Wu, Jie Wang

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 2,   Pages 415-426 doi: 10.1007/s11705-018-1725-8

Abstract: Catalytic steam gasification of fine coal char particles was carried out using a self-made laboratory

Keywords： coal char     catalytic steam gasification     pressure     kinetics     diffusion    

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Immobilized

Pei MA, Dan ZHANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 4,   Pages 498-508 doi: 10.1007/s11783-012-0429-4

Abstract: To investigate the potential use of ( ) residue for Cd adsorption, poly alcohol Na alginate (PVA) was

Keywords： immobilization     Lentinus edodes residue     competitive adsorption     isotherm    

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Performance evaluation of an improved biomass-fired cogeneration system simultaneously using extraction steam

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 321-335 doi: 10.1007/s11708-021-0741-4

Abstract: In place of the traditional single heat source (extraction steam), the extraction steam from the turbine

Keywords： biomass-fired cogeneration     district heat production system     absorption heat pump     extraction steam    

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Utilization of nano/micro-size iron recovered from the fine fraction of automobile shredder residue for

Jiwan SINGH, Yoon-Young CHANG, Jae-Kyu YANG, Seon-Hong KANG, Janardhan Reddy KODURU

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0848-8

Abstract: The study investigates the magnetic separation of Fe from automobile shredder residue (ASR) (<0.25 mm

Keywords： Automobile shredder residue (ASR)     Fe     Phenol     Scanning electron microscopy (SEM) and Fourier transform    

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High-efficiency inspecting method for mobile robots based on task planning for heat transfer tubes in a steam

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0741-z

Abstract: Many heat transfer tubes are distributed on the tube plates of a steam generator that requires periodic

Keywords： steam generator transfer tubes     mobile robot     dexterous structure     task planning     efficient inspection    

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A steam dried municipal solid waste gasification and melting process

Gang XIAO, Baosheng JIN, Mingjiang NI, Kefa CEN, Yong CHI, Zhongxin TAN

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 193-204 doi: 10.1007/s11783-010-0268-0

Abstract: Considering high-moisture municipal solid waste (MSW) of China, a steam dried MSW gasification and meltingMoisture percentage was reduced from 50% to 20% roughly when MSW was dried by slightly superheated steamboiler heat efficiency of an industrial MSW incineration plant reaches 86.97% when MSW is dried by steam

Keywords： municipal solid waste (MSW)     steam drying     gasification and melting    

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Impacts of solar multiple on the performance of direct steam generation solar power tower plant with

Yan LUO, Xiaoze DU, Lijun YANG, Chao XU, Muhammad AMJAD

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 461-471 doi: 10.1007/s11708-017-0503-5

Abstract: and thermal storage capacity are two key design parameters for revealing the performance of direct steam

Keywords： direct steam generation     solar power tower     solar multiple     thermal energy storage capacity     levelized cost    

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Combination of steam-enhanced extraction and electrical resistance heating for efficient remediation

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1582-z

Abstract:

● Coupling merits of SEE and ERH were explored by a laboratory-scale device.

Keywords： Steam-enhanced extraction     Electrical resistance heating     Dense nonaqueous phase liquid     Soil remediation    

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Title Author Date Type Operation

Thermal cracking of waste printed wiring boards for mechanical recycling by using residual steam preprocessing

Yao CHEN, Jinhui LI, Huabo DUAN, Zhishi WANG

Journal Article

Chromium steel from chromite ore processing residue----A valuable construction material from a waste

Jay N. MEEGODA, Wiwat KAMOLPORNWIJIT

Journal Article

Emission factors of gaseous carbonaceous species from residential combustion of coal and crop residue

Qin WANG, Chunmei GENG, Sihua LU, Wentai CHEN, Min SHAO

Journal Article

Environmental, social, and economic assessment of energy utilization of crop residue in China

Yueling ZHANG, Junjie LI, Huan LIU, Guangling ZHAO, Yajun TIAN, Kechang XIE

Journal Article

Assessing the potential of crop residue recycling in China and technology options based on a bottom-up

Lili QU,Tianzhu ZHANG,Wei LU

Journal Article

Porous silica synthesis out of coal fly ash with no residue generation and complete silicon separation

Journal Article

Modeling analysis on solar steam generator employed in multi-effect distillation (MED) system

Zhaorui ZHAO, Bao YANG, Ziwen XING

Journal Article

Intrinsic kinetics and external diffusion of catalytic steam gasification of fine coal char particles

Xuantao Wu, Jie Wang

Journal Article

Immobilized

Pei MA, Dan ZHANG

Journal Article

Performance evaluation of an improved biomass-fired cogeneration system simultaneously using extraction steam

Journal Article

Utilization of nano/micro-size iron recovered from the fine fraction of automobile shredder residue for

Jiwan SINGH, Yoon-Young CHANG, Jae-Kyu YANG, Seon-Hong KANG, Janardhan Reddy KODURU

Journal Article

High-efficiency inspecting method for mobile robots based on task planning for heat transfer tubes in a steam

Journal Article

A steam dried municipal solid waste gasification and melting process

Gang XIAO, Baosheng JIN, Mingjiang NI, Kefa CEN, Yong CHI, Zhongxin TAN

Journal Article

Impacts of solar multiple on the performance of direct steam generation solar power tower plant with

Yan LUO, Xiaoze DU, Lijun YANG, Chao XU, Muhammad AMJAD

Journal Article

Combination of steam-enhanced extraction and electrical resistance heating for efficient remediation

Journal Article