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Continuous biohydrogen production from diluted molasses in an anaerobic contact reactor

Sheng CHANG, Jianzheng LI, Feng LIU

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1,   Pages 140-148 doi: 10.1007/s11783-010-0258-2

Abstract: The ACR was operated at various volumetric loading rates (VLRs) of 20–44 kgCOD·m ·d with constant HRTAt the initial VLR of 20 kgCOD·m ·d , the hydrogen production rate dropped from 22.6 to 1.58 L·d asAfter increasing the VLR to 28 kgCOD·m ·d and discharging the sludge for 6 consecutive times, the hydrogentrophicethanol-type fermentation that favored hydrogen production in the reactor was thus established with the sludgeloading rate (SLR) of 2.0–2.5 kgCOD·kgMLVSS ·d .

Keywords： fermentative hydrogen production     anaerobic contact reactor (ACR)     sludge loading rate (SLR)     butyric acid-type    

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Start-up of PN-anammox system under low inoculation quantity and its restoration after low-loading rate

Guoliang Zhang, Liang Zhang, Xiaoyu Han, Shujun Zhang, Yongzhen Peng

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1324-z

Abstract: sludge was the important factor to rapid recovery. • Enrichment of AOB and AnAOB in granular sludgeThe nitrogen removal rate of 0.71 kgN/(m3·d) was obtained, which was far higher than the seed sludgeThereafter, excess nitrate build-up was observed under low-loading conditions, and recovery strategiesExperimental results suggest that increasing the nitrogen loading rate as well as the concentration ofThe partial nitritation and anammox activity were in balance, and an increase in nitrogen removal rate

Keywords： PN-anammox     Granular sludge     Excess nitrate build-up     Recovery strategy for partial nitrification     Aggressivedischarge of sludge    

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Microbial community dynamics at high organic loading rates revealed by pyrosequencing during sugar refinery

Liguo Zhang, Qiaoying Ban, Jianzheng Li

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 4, doi: 10.1007/s11783-018-1045-8

Abstract:

High strength sugar refinery wastewater was treated in a mesophilic UASB.

Pyrosequencing reveals microbial community succession with OLR increase.

Diversity of microbial communities in OLR12 is much higher than those in OLR36 and OLR54.0 kgCOD/(kg VSS·d).

Fermentative bacteria could deal with increasing OLR through the increase of microbial diversity and quantity.

Hydrogen-producing acotogens and methanogens mainly coped with high OLR shocks by increasing the quantity of community

Keywords： Upflow anaerobic sludge blanket     Sugar refinery wastewater     Organic loading rate     Pyrosequencing     Microbial    

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Effect of loading rate on shear strength parameters of mechanically and biologically treated waste

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1595-7

Abstract:

● Mechanical behavior of MBT waste affected by loading rate was investigated

Keywords： Mechanically and biologically treated waste     Landfill     Triaxial test     Loading rate     Axial strain     Shear    

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Achievement of high rate nitritation with aerobic granular sludge reactors enhanced by sludge recirculation

Zulkifly JEMAAT,Josep Anton TORA,Albert BARTROLI,Julián CARRERA,Julio PEREZ

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 528-533 doi: 10.1007/s11783-014-0641-5

Abstract: oxygen (DO) and the total ammonia nitrogen (TAN) concentrations in the bulk liquid of aerobic granular sludgeAchieved nitrogen loading rates ranged between 0.4 and 6.1 kgN·m ·d , at temperatures between 20°C andGranular sludge and nitritation were stable in the long term continuous operation of the reactors.The model demonstrated how sludge recirculation events led to a stable and significant increase of thebiomass concentration in the reactor, which in turn resulted in the achievement of high nitrogen loading

Keywords： partial nitrification     reject water     high strength ammonium wastewater     closed-loop control    

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Modification of the activated sludge model for chemical dosage

Shuai MA,Siyu ZENG,Xin DONG,Jining CHEN,Gustaf OLSSON

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 4,   Pages 694-701 doi: 10.1007/s11783-014-0732-3

Abstract: Full-scale experiments have been carried out to adapt the activated sludge model ASM2d to include thePhosphorus removal rates, nitrification rates, as well as pH and sludge settling performance, were evaluatedthat 1) both in low and high mole concentrations, Fe addition results in a higher phosphorus removal raterate of the activated sludge is decreased more by the dosage of Al than Fe ; 4) the inhibition of Alon the nitrification rate is stronger than that of Fe ; 5) the total operating cost will reach the

Keywords： chemical precipitation     benchmark simulation model     phosphorus removal     respiratory rate     sludge settling     activated sludge model    

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Reconsideration on the effect of nitrogen on mixed culture polyhydroxyalkanoate production toward high organic loading

Zhiqiang Chen, Lizhi Zhao, Ye Ji, Qinxue Wen, Long Huang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 4, doi: 10.1007/s11783-019-1135-2

Abstract:

Effect of nitrogen on mixed culture PHA production was reconsidered.

Enrichment history of PHA accumulating culture was discussed.

Higher PHA content and biomass growth were achieved in presence of nitrogen.

Enrichment strategy toward higher PHA accumulation was investigated.

Microbial community succession in PHA accumulation phase was investigated.

Keywords： Polyhydroxyalkanoate (PHA)     Organic loading rate     Nitrogen content     Biomass growth     Enrichment history    

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Concept and application of anaerobic suspended granular sludge bed (SGSB) reactor for wastewater treatment

Mingxia ZHENG,Zhong YAN,Jiane ZUO,Kaijun WANG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 797-804 doi: 10.1007/s11783-013-0597-x

Abstract: An analysis of the flow pattern of expanded granular sludge bed (EGSB) reactors shows that most EGSBA high-rate anaerobic suspended granular sludge bed (SGSB) reactor was then developed.its expansion degree can be easily controlled within a range to maintain the suspended status of the sludgeThe full-scale SGSB reactor runs stably and achieves high COD removal efficiency (about 90%) at high loading

Keywords： expansion characteristic     high-rate bioreactor     anaerobic suspended granular sludge bed     expanded granularsludge bed reactor    

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Performance of soft-hard-soft (SHS) cement based composite subjected to blast loading with consideration

Jun WU,Xuemei LIU

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 3,   Pages 323-340 doi: 10.1007/s11709-015-0301-2

Abstract: damage and performance of a soft-hard-soft (SHS) multi-layer cement based composite subjected to blast loadingTo better characterize the material properties under dynamic loading, interface properties of the compositeStrain rate effects of the asphalt concrete were also studied and both compressive and tensile dynamicThe numerical model was established by taking into account the strain rate effect of all concrete materialsnumerical and field blast test indicated that the SHS composite exhibited high resistance against blast loading

Keywords： high strength concrete (SHS)     engineered cementitious composite     interface     blast test     strain rate effect    

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Shear-critical reinforced concrete columns under various loading rates

Witarto WITARTO,Liang LU,Rachel Howser ROBERTS,Y. L. MO,Xilin LU

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4,   Pages 362-372 doi: 10.1007/s11709-014-0083-y

Abstract: presents an experimental study of shear-governed reinforced concrete columns subjected to different loadingFour typical short columns were tested cyclically with loading rate of 0.05, 1, 3, and 5 Hz, simulatingTest result indicated that the loading rate does not affect the column behavior when the rate is up toThe analytical model successfully modeled the cyclic loading test results.

Keywords： reinforced concrete columns     shear failure     loading rate     Carbon Nano-Fiber Aggregates (CNFAs)     finite element    

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enhanced damage plasticity model for predicting the cyclic behavior of plain concrete under multiaxial loading

Mohammad Reza AZADI KAKAVAND, Ertugrul TACIROGLU

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1531-1544 doi: 10.1007/s11709-020-0675-7

Abstract: current models that adopt two damage variables, the independence of these damage variables during cyclic loadingThe model describes the cyclic behavior of concrete under multiaxial loading conditions and considersusing experimental data on concrete specimens at the material level obtained under cyclic multiaxial loading

Keywords： damage plasticity model     plain concrete     cyclic loading     multiaxial loading conditions    

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Anaerobic treatment of fresh leachate from a municipal solid waste incinerator by upflow blanket filter reactor

Pinjing HE, Min LI, Suyun XU, Liming SHAO,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 4,   Pages 404-411 doi: 10.1007/s11783-009-0149-6

Abstract: Through dilution and partial effluent recycling, the organic loading rates increased from 0.51

Keywords： distribution of COD fluxes     effluent recycling     leachate     methane yield     organic loading rate     upflow blanket    

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Precise orbit determination technology based on SLR solution for HY-2A satellite

Wang Xiaohui,Peng Hailong,Lin Mingsen,Zhou Xuhua,Wu Bin

Strategic Study of CAE 2014, Volume 16, Issue 6,   Pages 90-96

Abstract: satellite, launched on October 16, 2011 is the first dynamic environments satellite in China, carrying the SLRThe measurement statistics of HY-2A satellite for the SLR stations, the orbit prediction, and the technologicalof SLR solution of HY-2A POD are showed, finally the result of the MOE radial accuracy verificationfor SLR solution of HY-2A satellite is given in this paper.

Keywords： Precise orbit determination     GPS     DORIS     SLR    

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Comparison between inhibitor and uncoupler for minimizing excess sludge production of an activated sludge

CHEN Guowei, XI Pengge, XU Deqian, YU Hanqing

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 63-66 doi: 10.1007/s11783-007-0012-6

Abstract: In order to study the minimization of excess sludge production, the reduction in the excess sludge productionThe experimental results show that such an addition could effectively reduce the production of excess sludgeestablished in this work, energy uncoupling coefficient () was used to evaluate the reduction in excess sludgepresence of dNP, and that dNP was an effective uncoupler for reducing the production of excess activated sludge

Keywords： uncoupling coefficient     Cu     minimization     presence     uncoupling    

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Effect of the addition of organic carbon sources on nitrous oxide emission in anaerobic-aerobic (low dissolved oxygen) sequencing batch reactors

Hongjing LI, Xiurong CHEN, Yinguang CHEN

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 4,   Pages 490-499 doi: 10.1007/s11783-010-0248-4

Abstract: cultured’ respectively with a single municipal wastewater sample, sodium acetate, and a waste-activated sludgeatmosphere during the aerobic (low dissolved oxygen) period in the three SBRs, and the order of N O emission rate

Keywords： anaerobic-aerobic (low dissolved oxygen)     nitrous oxide (N2O) emitting rate     municipal wastewater     waste activated sludge     alkaline fermentation liquid    

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Title Author Date Type Operation

Continuous biohydrogen production from diluted molasses in an anaerobic contact reactor

Sheng CHANG, Jianzheng LI, Feng LIU

Journal Article

Start-up of PN-anammox system under low inoculation quantity and its restoration after low-loading rate

Guoliang Zhang, Liang Zhang, Xiaoyu Han, Shujun Zhang, Yongzhen Peng

Journal Article

Microbial community dynamics at high organic loading rates revealed by pyrosequencing during sugar refinery

Liguo Zhang, Qiaoying Ban, Jianzheng Li

Journal Article

Effect of loading rate on shear strength parameters of mechanically and biologically treated waste

Journal Article

Achievement of high rate nitritation with aerobic granular sludge reactors enhanced by sludge recirculation

Zulkifly JEMAAT,Josep Anton TORA,Albert BARTROLI,Julián CARRERA,Julio PEREZ

Journal Article

Modification of the activated sludge model for chemical dosage

Shuai MA,Siyu ZENG,Xin DONG,Jining CHEN,Gustaf OLSSON

Journal Article

Reconsideration on the effect of nitrogen on mixed culture polyhydroxyalkanoate production toward high organic loading

Zhiqiang Chen, Lizhi Zhao, Ye Ji, Qinxue Wen, Long Huang

Journal Article

Concept and application of anaerobic suspended granular sludge bed (SGSB) reactor for wastewater treatment

Mingxia ZHENG,Zhong YAN,Jiane ZUO,Kaijun WANG

Journal Article

Performance of soft-hard-soft (SHS) cement based composite subjected to blast loading with consideration

Jun WU,Xuemei LIU

Journal Article

Shear-critical reinforced concrete columns under various loading rates

Witarto WITARTO,Liang LU,Rachel Howser ROBERTS,Y. L. MO,Xilin LU

Journal Article

enhanced damage plasticity model for predicting the cyclic behavior of plain concrete under multiaxial loading

Mohammad Reza AZADI KAKAVAND, Ertugrul TACIROGLU

Journal Article

Anaerobic treatment of fresh leachate from a municipal solid waste incinerator by upflow blanket filter reactor

Pinjing HE, Min LI, Suyun XU, Liming SHAO,

Journal Article

Precise orbit determination technology based on SLR solution for HY-2A satellite

Wang Xiaohui,Peng Hailong,Lin Mingsen,Zhou Xuhua,Wu Bin

Journal Article

Comparison between inhibitor and uncoupler for minimizing excess sludge production of an activated sludge

CHEN Guowei, XI Pengge, XU Deqian, YU Hanqing

Journal Article

Effect of the addition of organic carbon sources on nitrous oxide emission in anaerobic-aerobic (low dissolved oxygen) sequencing batch reactors

Hongjing LI, Xiurong CHEN, Yinguang CHEN

Journal Article