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Bioresource technology : biomass, bioenergy, biowa... 49건

  1. [해외논문]   Editorial Board   SCI SCIE


    Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies v.228 ,pp. IFC - IFC , 2017 , 0960-8524 ,

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

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  2. [해외논문]   Editorial Board  


    Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies v.228 ,pp. IFC , 2017 , 0960-8524 ,

    초록

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  3. [해외논문]   Rapid adaptation of activated sludge bacteria into a glycogen accumulating biofilm enabling anaerobic BOD uptake   SCI SCIE

    Hossain, Md Iqbal (School of Engineering and Information Technology, Murdoch University, 90 South Street, Murdoch 6150, Western Australia, Australia ) , Paparini, Andrea (School of Veterinary and Life Sciences, Murdoch University, 90 South Street, Murdoch 6150, Western Australia, Australia ) , Cord-Ruwisch, Ralf (School of Engineering and Information Technology, Murdoch University, 90 South Street, Murdoch 6150, Western Australia, Australia)
    Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies v.228 ,pp. 1 - 8 , 2017 , 0960-8524 ,

    초록

    Abstract Glycogen accumulating organisms (GAO) are known to allow anaerobic uptake of biological oxygen demand (BOD) in activated sludge wastewater treatment systems. In this study, we report a rapid transition of suspended activated sludge biomass to a GAO dominated biofilm by selective enrichment using sequences of anaerobic loading followed by aerobic exposure of the biofilm to air. The study showed that within eight weeks, a fully operational, GAO dominated biofilm had developed, enabling complete anaerobic BOD uptake at a rate of 256mg/L/h. The oxygen uptake by the biofilm directly from the atmosphere had been calculated to provide significant energy savings. This study suggests that wastewater treatment plant operators can convert activated sludge systems readily into a “passive aeration” biofilm that avoids costly oxygen transfer to bulk wastewater solution. The described energy efficient BOD removal system provides an opportunity to be coupled with novel nitrogen removal processes such as anammox. Highlights Activated sludge biomass was converted to GAO dominated biofilm within eight weeks. Biofilm removed organic carbon anaerobically and stored as PHA. Storage ability of biofilm was revived after exposure to atmospheric oxygen. Biofilm operation required less energy as it avoids costly O 2 transfer into wastewater. The reactor could be integrated with nitrogen removal (e.g., anammox) technologies.

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  4. [해외논문]   Kinetic parameter estimation model for anaerobic co-digestion of waste activated sludge and microalgae   SCI SCIE

    Lee, Eunyoung (Department of Civil and Environmental Engineering, University of South Florida, 4202 E Fowler Avenue, Tampa, FL 33620, United States ) , Cumberbatch, Jewel (Environmental Engineering Department, University of Florida, Gainesville, FL 32611, United States ) , Wang, Meng (Department of Civil and Environmental Engineering, University of South Florida, 4202 E Fowler Avenue, Tampa, FL 33620, United States ) , Zhang, Qiong (Department of Civil and Environmental Engineering, University of South Florida, 4202 E Fowler Avenue, Tampa, FL 33620, United States)
    Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies v.228 ,pp. 9 - 17 , 2017 , 0960-8524 ,

    초록

    Abstract Anaerobic co-digestion has a potential to improve biogas production, but limited kinetic information is available for co-digestion. This study introduced regression-based models to estimate the kinetic parameters for the co-digestion of microalgae and Waste Activated Sludge (WAS). The models were developed using the ratios of co-substrates and the kinetic parameters for the single substrate as indicators. The models were applied to the modified first-order kinetics and Monod model to determine the rate of hydrolysis and methanogenesis for the co-digestion. The results showed that the model using a hyperbola function was better for the estimation of the first-order kinetic coefficients, while the model using inverse tangent function closely estimated the Monod kinetic parameters. The models can be used for estimating kinetic parameters for not only microalgae-WAS co-digestion but also other substrates’ co-digestion such as microalgae-swine manure and WAS-aquatic plants. Highlights Kinetic parameter estimation models were proposed for anaerobic co-digestion. The models considered co-substrate ratios and single substrate kinetic parameters. The models were used to determine the first-order kinetic and Monod coefficients. The models could estimate kinetic parameters for the microalgae-WAS co-digestion.

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  5. [해외논문]   Pyrolysis and kinetic analyses of Camel grass (Cymbopogon schoenanthus) for bioenergy   SCI SCIE

    Mehmood, Muhammad Aamer (Bioenergy Research Centre, Department of Bioinformatics & Biotechnology, Government College University Faisalabad, Faisalabad 38000, Pakistan ) , Ye, Guangbin (College of Bioengineering, Sichuan University of Science and Engineering, Zigong 643000, People's Republic of China ) , Luo, Huibo (College of Bioengineering, Sichuan University of Science and Engineering, Zigong 643000, People's Republic of China ) , Liu, Chenguang (State Key Laboratory of Microbial Metabolism, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China ) , Malik, Sana (Bioenergy Research Centre, Department of Bioinformatics & Biotechnology, Government College University Faisalabad, Faisalabad 38000, Pakistan ) , Afzal, Ifrah (Bioenergy Research Centre, Department of Bioinformatics & Biotechnology, Government College University Faisalabad, Faisalabad 38000, Pakistan ) , Xu, Jianren (State Key Laboratory of Microbial Metabolism, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of Chin) , Ahmad, Muhammad Sajjad
    Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies v.228 ,pp. 18 - 24 , 2017 , 0960-8524 ,

    초록

    Abstract The aim of this work was to study the thermal degradation of grass ( Cymbopogon schoenanthus ) under an inert environment at three heating rates, including 10, 30, and 50°Cmin −1 in order to evaluate its bioenergy potential. Pyrolysis experiments were performed in a simultaneous Thermogravimetry–Differential Scanning Calorimetry analyzer. Thermal data were used to analyze kinetic parameters through isoconversional models of Flynn-Wall-Ozawa (FWO) and Kissenger-Akahira-Sunose (KSA) methods. The pre-exponential factors values have shown the reaction to follow first order kinetics. Activation energy values were shown to be 84–193 and 96–192kJmol −1 as calculated by KSA and FWO methods, respectively. Differences between activation energy and enthalpy of reaction values (∼5 to 6kJmol −1 ) showed product formation is favorable. The Gibb’s free energy (173–177kJmol −1 ) and High Heating Value (15.00MJkg −1 ) have shown the considerable bioenergy potential of this low-cost biomass. Highlights Camel grass is an abundant and low cost biological resource. Pyrolysis experiments were performed using TGA-DSC. Kinetic and thermodynamic parameters were calculated to understand its pyrolysis. We have shown that Camel grass is suitable for pyrolysis in cost and energy efficient manner.

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  6. [해외논문]   Uneven biofilm and current distribution in three-dimensional macroporous anodes of bio-electrochemical systems composed of graphite electrode arrays   SCI SCIE

    Li, Jun (Corresponding author at: Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing 40003, China.) , Hu, Linbin , Zhang, Liang , Ye, Ding-ding , Zhu, Xun , Liao, Qiang
    Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies v.228 ,pp. 25 - 30 , 2017 , 0960-8524 ,

    초록

    Abstract A 3-D macroporous anode was constructed using different numbers of graphite rod arrays in fixed-volume bio-electrochemical systems (BESs), and the current and biofilm distribution were investigated by dividing the 3-D anode into several subunits. In the fixed-volume chamber, current production was not significantly improved after the electrode number increased to 36. In the case of 100 electrodes, a significant uneven current distribution was found in the macroporous anode. This was attributed to a differential pH distribution, which resulted from proton accumulation inside the macroporous anode. The pH distribution influenced the biofilm development and led to an uneven biofilm distribution. With respect to current generation, the uneven distribution of both the pH and biofilm contributed to the uneven current distribution. The center had a low pH, which led to less biofilm and a lower contribution to the total current, limiting the performance of the BESs. Highlights A 3-D macroporous anode composed of graphite rod arrays was developed. Current promotion was limited after the electrode array reached a high number. A significantly uneven current distribution was found in the macroporous anode. Proton transfer influenced the pH and biofilm distribution in the macroporous anode. The closer the segment was to the center, the lower the contribution to the total current. Graphical abstract [DISPLAY OMISSION]

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    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  7. [해외논문]   Bacterial community structure in simultaneous nitrification, denitrification and organic matter removal process treating saline mustard tuber wastewater as revealed by 16S rRNA sequencing   SCI SCIE

    Wang, Jiale (Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, PR China ) , Gong, Benzhou (Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, PR China ) , Huang, Wei (Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, PR China ) , Wang, Yingmu (Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, PR China ) , Zhou, Jian (Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, PR China)
    Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies v.228 ,pp. 31 - 38 , 2017 , 0960-8524 ,

    초록

    Abstract A simultaneous nitrification, denitrification and organic matter removal (SNDOR) process in sequencing batch biofilm reactor (SBBR) was established to treat saline mustard tuber wastewater (MTWW) in this study. An average COD removal efficiency of 86.48% and total nitrogen removal efficiency of 86.48% were achieved at 30gNaClL −1 during 100days’ operation. The underlying mechanisms were investigated by PacBio SMRT DNA sequencing (V1–V9) to analyze the microbial community structures and its variation from low salinity at 10gNaClL −1 to high salinity at 30gNaClL −1 . Results showed elevated salinity did not affect biological performance but reduced microbial diversity in SBBR, and halophilic bacteria gradually predominated by succession. Despite of high C/N, autotrophic ammonia-oxidizing bacteria (AOB) Nitrosomonas and ammonia-oxidizing archaea (AOA) Candidatus Nitrososphaera both contributed to ammonium oxidation. As salinity increasing, nitrite-oxidizing bacteria (NOB) were significantly inhibited, partial nitrification and denitrification (PND) process gradually contributed to nitrogen removal. Highlights First systematically investigated SNDOR treating MTWW by full-length 16S rRNA sequencing. Proliferation of halophilic microbes stabilized biological performance along with elevated salinity. Autotrophic AOB and AOA together contributed to ammonium oxidation despite of high C/N. PND gradually took predominance along with elevated salinity.

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  8. [해외논문]   Performance and microbial communities of completely autotrophic denitrification in a bioelectrochemically-assisted constructed wetland system for nitrate removal   SCI SCIE

    Xu, Dan (College of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, PR China ) , Xiao, Enrong (State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China ) , Xu, Peng (State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China ) , Zhou, Yin (State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China ) , He, Feng (State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China ) , Zhou, Qiaohong (State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China ) , Xu, Dong (State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, PR China ) , Wu, Zhenbin (State Key Laboratory of Freshwate)
    Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies v.228 ,pp. 39 - 46 , 2017 , 0960-8524 ,

    초록

    Abstract A bioelectrochemically-assisted constructed wetland (BECW) system was used to treat nitrate-contaminated wastewater without organic carbon source. The denitrification performance and microbial community composition of a BECW in closed-circuit mode (BECW-C) was compared to a BECW in open-circuit mode (BECW-O). The highest denitrification efficiency (78.92±3.12%) was obtained in the BECW-C with an applied current of 15mA. No nitrite accumulation was observed during the autotrophic denitrification process in the BECW-C. The significantly higher denitrification efficiency of the BECW-C compared to the BECW-O suggested enhanced denitrification due to in situ generation of hydrogen. The bacterial communities in the anode, cathode and rhizosphere regions collected from the BECW-C (with 10 or 15mA) and the BECW-O were characterized using 16S rRNA pyrosequencing technology, which revealed different microbial community structures among the treatments. The results also indicated that Thiohalophilus and Clostridium sensu stricto might be responsible for autotrophic denitrification in the BECW-C. Highlights A bioelectrochemically-assisted CW (BECW) was used to remove nitrate in wastewater. Denitrification performance of BECWs under open- and closed-circuit were compared. Completely autotrophic denitrification was obtained with organic-free influent. Microbial communities were revealed by high-throughput 16S rRNA pyrosequencing. Thiohalophilus and Clostridium sensu stricto were responsible for nitrate removal. Graphical abstract [DISPLAY OMISSION]

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  9. [해외논문]   Conversion of Undaria pinnatifida residue to glycolic acid with recyclable methylamine in low temperature hydrothermal liquefaction   SCI SCIE

    Chen, Yongxing (Corresponding author.) , Ren, Xiulian , Wei, Qifeng
    Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies v.228 ,pp. 47 - 55 , 2017 , 0960-8524 ,

    초록

    Abstract The conversion of Undaria pinnatifida residue to glycolic acid was carried out using methylamine as catalyst by hydrothermal method at relatively low temperature. GC–MS and HPLC were used to identify the composition of bio-oil and liquid products which provide the knowledge of the chemical reaction pathways of the hydrothermal liquefaction. The main liquid product was organic acid which contained glycolic acid, lactic acid, formic acid and acetic acid. And the major organic acid was glycolic acid with the highest yield of 46.52% or 33.98% of dry biomass. Methylamine promoted the dissolution of cellulose from Undaria pinnatifida residue, and significantly improved the yield of glycolic acid. The mechanism of HTL was investigated and the results show that the carbocation C 3 was attacked by methylamine molecule which led to the high yield of glycolic acid. In addition, the recovery of methylamine was studied and the highest recovery rate reached 99.28%. Highlights HTL of biomass with methylamine was reported for the first time. The main composition of aqueous phase was glycolic acid. Highest yield of glycolic acid was 46.52%. The main compositions of bio-oil were saturated and unsaturated fatty acids. The highest recovery rate of methylamine was 99.28%.

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  10. [해외논문]   A holistic approach for food waste management towards zero-solid disposal and energy/resource recovery   SCI SCIE

    Ma, Yingqun (Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore ) , Yin, Yao (Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore ) , Liu, Yu (Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore)
    Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies v.228 ,pp. 56 - 61 , 2017 , 0960-8524 ,

    초록

    Abstract This study developed a holistic approach which was based on the ultra-fast hydrolysis of food waste with the fungal mash rich in various hydrolytic enzymes produced in situ from food waste as well. After the 8-h hydrolytic treatment, the solid residue and liquor were separated. It was found that the produced solid residue can meet all the requirements for biofertilizer in terms of NPK and heavy metal contents, while the separated liquor with high soluble organics concentration was further subject to anaerobic digestion for enhanced biomethane production. The results showed that 0.41kg of biofertilizer with a moisture content of 76.9% and 54.4L of biomethane could be produced from 1kg of food waste. As such, it is expected that this study may lead to the paradigm shift in food waste management with the ultimate target of zero-solid discharge. Highlights Fungal mash rich in hydrolytic enzymes was produced from food waste. Ultrafast hydrolysis of food waste was realized in 8h with fungal mash. The solid residue with adequate NPK contents can be readily used as biofertilizer. The separated liquor with a SCOD of 99g/L was used for biomethane production. The method led to nearly zero-solid discharge of food waste with energy recovery.

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