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Innovation of Diaspore Alumina Production Process

Song Peikai

Strategic Study of CAE 2001, Volume 3, Issue 8,   Pages 87-90

Abstract:

This paper summarizes the characteristics of bauxite resources and alumina production in China Theresearch contents, key techniques and results of performance of diaspore tube digestion are introducedThe develpment direction and significance of Diaspore bauxite digestion technology are described.

Keywords： diaspore     alumina tube digestion     energy conservation and consumption reduction     wear    

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Grindability of high-temperature alloy with ceramic alumina wheels

ZHANG Hongxia, CHEN Wuyi, CHEN Zhitong

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2,   Pages 139-145 doi: 10.1007/s11465-008-0040-3

Abstract: The grindability of high-temperature alloy by using ceramic alumina wheels is studied on the basis of18–22 m/s and the depth of grinding should not exceed 0.02 mm in grinding GH2132 alloy with ceramic alumina

Keywords： metallographic     topography     grinding GH2132     resistance     decrease    

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Room temperature oxidation of acetone by ozone over alumina-supported manganese and cobalt mixed oxides

Mehraneh Ghavami, Mostafa Aghbolaghy, Jafar Soltan, Ning Chen

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 937-947 doi: 10.1007/s11705-019-1900-6

Abstract: In this study, a series of alumina supported single and mixed manganese and cobalt oxides catalysts were

Keywords： ozone     VOC     manganese oxides     cobalt oxides     alumina support    

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Catalytic activity of manganese oxide supported on alumina in the synthesis of quinoxalines

Rekha M., H. Kathyayini, N. Nagaraju

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 415-421 doi: 10.1007/s11705-013-1360-3

Abstract: Two catalysts, alumina and manganese oxide supported on alumina, have been prepared by calcination and

Keywords： alumina     manganese oxide deposited on alumina     quinoxaline synthesis    

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Sulfate digestion process for high purity TiO

T. A. LASHEEN

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 155-160 doi: 10.1007/s11705-009-0005-z

Abstract: A titania slag product of Rosetta ilmenite assaying 72% TiO is treated by the sulfate process option of the pigmentary TiO manufacture. The relevant factors of acid concentration, particle size, slag/acid ratio besides the reaction temperature, and time have been studied. After dissolving the cured mass in dilute acid and clarification, the obtained solution was subjected to hydrolysis of its titanium content. The final product was bleached under reducing conditions to redissolve the residual coloring impurities before being dewatered and calcinated. The obtained results indicated that a leaching efficiency of about 92% was realized due to the presence of some refractory components in the working slag material, namely, rutile and magnesium iron titanate. The obtained white pigment assay attained up to 99.85% TiO , while the analyzed impurities involve 77 ppm Mn and only 14 and 7 ppm of total iron and V, respectively.

Keywords： titania     slag     sulfate process     pigment    

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Influencing mechanism of high solid concentration on anaerobic mono-digestion of sewage sludge without

Yuyao ZHANG,Huan LI,Can LIU,Yingchao CHENG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 1108-1116 doi: 10.1007/s11783-015-0806-x

Abstract: High-solids anaerobic digestion of sewage sludge was a promising process, but high solid concentrationinfluencing mechanism was systematically analyzed in this study through a series of static anaerobic digestionThe results showed that TS 6% was the boundary between low-solids and high-solids anaerobic digestionThe performance of anaerobic digestion was directly determined by the efficiency of mass transfer, andConsequently, the deterioration of high-solids anaerobic digestion was related to the blocked mass transfer

Keywords： anaerobic digestion     methane     sewage sludge     volatile fatty acids     free ammonia    

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A hybrid membrane process for simultaneous thickening and digestion of waste activated sludge

Zhiwei WANG, Qiaoying WANG, Zhichao WU, Xinhua WANG,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 3,   Pages 272-279 doi: 10.1007/s11783-010-0234-x

Abstract: A hybrid membrane process for simultaneous sludge thickening and digestion (MSTD) was studied.The thickening and digestion effects in the MSTD were further analyzed based on a mass balance analysis

Keywords： membrane filtration     sludge digestion     sludge thickening     waste activated sludge    

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Mesophilic and thermophilic anaerobic digestion of swine manure with sulfamethoxazole and norfloxacin

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-020-1342-x

Abstract:

• SMX addition had negative effect on acetoclastic methanogens in mesophilic AD.

Keywords： Pig manure     Antibiotics     Anaerobic digestion     Resistance genes     Microbial community    

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Degradation of polyacrylamide (PAM) and methane production by mesophilic and thermophilic anaerobic digestion

Mona Akbar, Muhammad Farooq Saleem Khan, Ling Qian, Hui Wang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1277-2

Abstract: Furthermore, it degrades slowly and can deteriorate methane yield during anaerobic digestion (AD).

Keywords： Polyacrylamide (PAM) degradation     Acrylamide (AM)     Mesophilic anaerobic digestion     Thermophilic anaerobicdigestion     Methane production    

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Alumina modified sodium vanadate cathode for aqueous zinc-ion batteries

Frontiers in Energy   Pages 775-781 doi: 10.1007/s11708-023-0902-8

Abstract: sub>6O16·3H2O (NVO) was chosen as a model material, and was modified with alumina

Keywords： cathodes     aqueous zinc-ion batteries     sodium vanadate     alumina     coating    

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Hysteretic behavior of cambered surface steel tube damper: Theoretical and experimental research

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 606-624 doi: 10.1007/s11709-023-0925-6

Abstract: A novel cambered surface steel tube damper (CSTD) with a cambered surface steel tube and two concaveThe steel tube is the main energy dissipation component and comprises a weakened segment in the middleSubsequently, two CSTD specimens with different steel tube thicknesses are fabricated and tested underA parametric study is conducted to investigate the effects of the steel tube height, diameter, and thicknessCompared with equal-stiffness design steel tube dampers, the CSTD exhibits better energy dissipation

Keywords： cambered surface steel tube damper     energy dissipation capacity     finite element model     hysteretic performance    

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High-solid anaerobic digestion of sewage sludge: achievements and perspectives

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1364-4

Abstract:

• High-solid anaerobic digestion (HS-AD) of sewage sludge (SS) is overviewed

Keywords： High-solid effect     Anaerobic fermentation     Methane production     Biodegradability     Sludge treatment    

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Effect of alumina and zirconia as binders on the activity of Fe-BEA for NH

Jin Shi, Zihao Zhang, Mingxia Chen, Zhixiang Zhang, Wenfeng Shangguan, Shunchao Gu, Hirano Shin-ichi

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 1, doi: 10.1007/s11783-018-1012-4

Abstract: The addition of alumina and zirconia as binders to the Fe-BEA led to a different effect on NO conversionlarger iron particles were formed by the migration of parent iron particles in the Fe-BEA catalyst with alumina

Keywords： NH3-SCR     NO     Fe-BEA     Binder     Alumina     Zirconia    

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Comparison of different valent iron on anaerobic sludge digestion: Focusing on oxidation reduction potential

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 6, doi: 10.1007/s11783-021-1514-3

Abstract:

• ORP value from −278.71 to −379.80 mV showed indiscernible effects on methane yield.

Keywords： Enhanced anaerobic sludge digestion     Different iron valence     Oxidation reduction potential     Dissolved    

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ALKALINE PRETREATMENT AND AIR MIXING FOR IMPROVEMENT OF METHANE PRODUCTION FROM ANAEROBIC CO-DIGESTION

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 3,   Pages 424-436 doi: 10.15302/J-FASE-2023506

Abstract:

● Integration of alkaline pretreatment and air mixing for co-digestion

Keywords： sodium hydroxide     air injection     cumulative methane yield     kinetic modeling analysis     digestate    

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Title Author Date Type Operation

Innovation of Diaspore Alumina Production Process

Song Peikai

Journal Article

Grindability of high-temperature alloy with ceramic alumina wheels

ZHANG Hongxia, CHEN Wuyi, CHEN Zhitong

Journal Article

Room temperature oxidation of acetone by ozone over alumina-supported manganese and cobalt mixed oxides

Mehraneh Ghavami, Mostafa Aghbolaghy, Jafar Soltan, Ning Chen

Journal Article

Catalytic activity of manganese oxide supported on alumina in the synthesis of quinoxalines

Rekha M., H. Kathyayini, N. Nagaraju

Journal Article

Sulfate digestion process for high purity TiO

T. A. LASHEEN

Journal Article

Influencing mechanism of high solid concentration on anaerobic mono-digestion of sewage sludge without

Yuyao ZHANG,Huan LI,Can LIU,Yingchao CHENG

Journal Article

A hybrid membrane process for simultaneous thickening and digestion of waste activated sludge

Zhiwei WANG, Qiaoying WANG, Zhichao WU, Xinhua WANG,

Journal Article

Mesophilic and thermophilic anaerobic digestion of swine manure with sulfamethoxazole and norfloxacin

Journal Article

Degradation of polyacrylamide (PAM) and methane production by mesophilic and thermophilic anaerobic digestion

Mona Akbar, Muhammad Farooq Saleem Khan, Ling Qian, Hui Wang

Journal Article

Alumina modified sodium vanadate cathode for aqueous zinc-ion batteries

Journal Article

Hysteretic behavior of cambered surface steel tube damper: Theoretical and experimental research

Journal Article

High-solid anaerobic digestion of sewage sludge: achievements and perspectives

Journal Article

Effect of alumina and zirconia as binders on the activity of Fe-BEA for NH

Jin Shi, Zihao Zhang, Mingxia Chen, Zhixiang Zhang, Wenfeng Shangguan, Shunchao Gu, Hirano Shin-ichi

Journal Article

Comparison of different valent iron on anaerobic sludge digestion: Focusing on oxidation reduction potential

Journal Article

ALKALINE PRETREATMENT AND AIR MIXING FOR IMPROVEMENT OF METHANE PRODUCTION FROM ANAEROBIC CO-DIGESTION

Journal Article