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  1. AU="SU Xian-feng"
  2. AU="Toledo, Maximiliano A"
  3. AU="Yushun Wan"
  4. AU="Jahangir, Muhammad"
  5. AU="Kannan, Shankar"
  6. AU="Andreyev, H Jervoise N"
  7. AU="O'Sullivan, Fionnuala"
  8. AU="Chaudhary, Sibgha Gull"
  9. AU="Höger, Brigitta"
  10. AU="Sai, Victor"
  11. AU="Ghasemi, H M"
  12. AU="Ruliang Li"
  13. AU="Gilchriese, M G D"
  14. AU="Rist, Andreas"
  15. AU="Katznelson, Andrew" AU="Katznelson, Andrew"
  16. AU="Solís-Martínez, Obed"
  17. AU="Dumitrescu, Florentina"
  18. AU="Hodge, Sarah"
  19. AU="Piasek, Joanna"

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  1. Artikel ; Online: On the Zeros of fm(f(k))n－φ(z)

    LI Guo-wang / SU Xian-feng / XU Dao-jun

    Journal of Chongqing Normal University, Vol 30, Iss 04, Pp 72-

    2013  Band 75

    Abstract: Using the Nevanlinna value distribution theory of meromorphic function, we consider the problem of value distribution offm(f(k))n－φ(z).We obtain a more general result. Let f be a transcendental meromorphic function on the complex plane. Suppose that φ(z) ...

    Abstract Using the Nevanlinna value distribution theory of meromorphic function, we consider the problem of value distribution offm(f(k))n－φ(z).We obtain a more general result. Let f be a transcendental meromorphic function on the complex plane. Suppose that φ(z) is not identically zero and a small function of f,m,k,nare three positive integers. If k≥1,n,m≥2， then fm(f(k))n－φ has infinitely many zeros. This paper also extends the relative theorems of Zhang Zhonghua and other people.
    Schlagwörter meromorphic function ; zeros ; value distribution ; Science (General) ; Q1-390 ; Science ; Q ; DOAJ:Science (General) ; DOAJ:Science General
    Sprache Chinesisch
    Erscheinungsdatum 2013-07-01T00:00:00Z
    Verlag Chongqing Normal University
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Artikel ; Online: Effect of propionic acid on citric acid fermentation in an integrated citric acid-methane fermentation process.

    Xu, Jian / Bao, Jia-Wei / Su, Xian-Feng / Zhang, Hong-Jian / Zeng, Xin / Tang, Lei / Wang, Ke / Zhang, Jian-Hua / Chen, Xu-Sheng / Mao, Zhong-Gui

    Bioprocess and biosystems engineering

    2016  Band 39, Heft 3, Seite(n) 391–400

    Abstract: In this study, an integrated citric acid-methane fermentation process was established to solve the problem of wastewater treatment in citric acid production. Citric acid wastewater was treated through anaerobic digestion and then the anaerobic digestion ... ...

    Abstract In this study, an integrated citric acid-methane fermentation process was established to solve the problem of wastewater treatment in citric acid production. Citric acid wastewater was treated through anaerobic digestion and then the anaerobic digestion effluent (ADE) was further treated and recycled for the next batch citric acid fermentation. This process could eliminate wastewater discharge and reduce water resource consumption. Propionic acid was found in the ADE and its concentration continually increased in recycling. Effect of propionic acid on citric acid fermentation was investigated, and results indicated that influence of propionic acid on citric acid fermentation was contributed to the undissociated form. Citric acid fermentation was inhibited when the concentration of propionic acid was above 2, 4, and 6 mM in initial pH 4.0, 4.5 and, 5.0, respectively. However, low concentration of propionic acid could promote isomaltase activity which converted more isomaltose to available sugar, thereby increasing citric acid production. High concentration of propionic acid could influence the vitality of cell and prolong the lag phase, causing large amount of glucose still remaining in medium at the end of fermentation and decreasing citric acid production.
    Mesh-Begriff(e) Citric Acid/metabolism ; Hydrogen-Ion Concentration ; Methane/metabolism ; Propionates/metabolism ; Waste Water/microbiology ; Water Microbiology
    Chemische Substanzen Propionates ; Waste Water ; Citric Acid (2968PHW8QP) ; propionic acid (JHU490RVYR) ; Methane (OP0UW79H66)
    Sprache Englisch
    Erscheinungsdatum 2016-03
    Erscheinungsland Germany
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1476357-6
    ISSN 1615-7605 ; 1432-0797 ; 1615-7591
    ISSN (online) 1615-7605 ; 1432-0797
    ISSN 1615-7591
    DOI 10.1007/s00449-015-1522-4
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: A novel cleaner production process of citric acid by recycling its treated wastewater.

    Xu, Jian / Su, Xian-Feng / Bao, Jia-Wei / Zhang, Hong-Jian / Zeng, Xin / Tang, Lei / Wang, Ke / Zhang, Jian-Hua / Chen, Xu-Sheng / Mao, Zhong-Gui

    Bioresource technology

    2016  Band 211, Seite(n) 645–653

    Abstract: In this study, a novel cleaner production process of citric acid was proposed to completely solve the problem of wastewater management in citric acid industry. In the process, wastewater from citric acid fermentation was used to produce methane through ... ...

    Abstract In this study, a novel cleaner production process of citric acid was proposed to completely solve the problem of wastewater management in citric acid industry. In the process, wastewater from citric acid fermentation was used to produce methane through anaerobic digestion and then the anaerobic digestion effluent was further treated with air stripping and electrodialysis before recycled as process water for the later citric acid fermentation. This proposed process was performed for 10 batches and the average citric acid production in recycling batches was 142.4±2.1g/L which was comparable to that with tap water (141.6g/L). Anaerobic digestion was also efficient and stable in operation. The average chemical oxygen demand (COD) removal rate was 95.1±1.2% and methane yield approached to 297.7±19.8mL/g TCODremoved. In conclusion, this novel process minimized the wastewater discharge and achieved the cleaner production in citric acid industry.
    Mesh-Begriff(e) Anaerobiosis ; Biodegradation, Environmental ; Biological Oxygen Demand Analysis ; Citric Acid/metabolism ; Fermentation ; Methane/biosynthesis ; Recycling ; Waste Water/chemistry ; Water Purification/methods
    Chemische Substanzen Waste Water ; Citric Acid (2968PHW8QP) ; Methane (OP0UW79H66)
    Sprache Englisch
    Erscheinungsdatum 2016-07
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 1065195-0
    ISSN 1873-2976 ; 0960-8524
    ISSN (online) 1873-2976
    ISSN 0960-8524
    DOI 10.1016/j.biortech.2016.03.163
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Cleaner production of citric acid by recycling its extraction wastewater treated with anaerobic digestion and electrodialysis in an integrated citric acid-methane production process.

    Xu, Jian / Su, Xian-Feng / Bao, Jia-Wei / Chen, Yang-Qiu / Zhang, Hong-Jian / Tang, Lei / Wang, Ke / Zhang, Jian-Hua / Chen, Xu-Sheng / Mao, Zhong-Gui

    Bioresource technology

    2015  Band 189, Seite(n) 186–194

    Abstract: To solve the pollution problem of extraction wastewater in citric acid production, an integrated citric acid-methane production process was proposed. Extraction wastewater was treated through anaerobic digestion and the anaerobic digestion effluent (ADE) ...

    Abstract To solve the pollution problem of extraction wastewater in citric acid production, an integrated citric acid-methane production process was proposed. Extraction wastewater was treated through anaerobic digestion and the anaerobic digestion effluent (ADE) was recycled for the next batch of citric acid fermentation, thus eliminating wastewater discharge and reducing water consumption. Excessive Na(+) contained in ADE could significantly inhibit citric acid fermentation in recycling and was removed by electrodialysis in this paper. Electrodialysis performance was improved after pretreatment of ADE with air stripping and activated carbon adsorption to remove precipitable metal ions and pigments. Moreover, the concentrate water was recycled and mixed with feed to improve the water recovery rate above 95% in electrodialysis treatment, while the dilute water was collected for citric acid fermentation. The removal rate of Na(+) in ADE was above 95% and the citric acid production was even higher than that with tap water.
    Mesh-Begriff(e) Anaerobiosis ; Biodegradation, Environmental ; Bioreactors/microbiology ; Citric Acid/metabolism ; Dialysis/methods ; Electricity ; Fermentation ; Ion Exchange ; Membranes, Artificial ; Methane/biosynthesis ; Recycling ; Sodium/pharmacology ; Waste Water/chemistry ; Water Purification/methods
    Chemische Substanzen Membranes, Artificial ; Waste Water ; Citric Acid (2968PHW8QP) ; Sodium (9NEZ333N27) ; Methane (OP0UW79H66)
    Sprache Englisch
    Erscheinungsdatum 2015
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 1065195-0
    ISSN 1873-2976 ; 0960-8524
    ISSN (online) 1873-2976
    ISSN 0960-8524
    DOI 10.1016/j.biortech.2015.04.016
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel: Effect of propionic acid on citric acid fermentation in an integrated citric acid–methane fermentation process

    Xu, Jian / Bao, Jia-Wei / Su, Xian-Feng / Zhang, Hong-Jian / Zeng, Xin / Tang, Lei / Wang, Ke / Zhang, Jian-Hua / Chen, Xu-Sheng / Mao, Zhong-Gui

    Bioprocess and biosystems engineering

    Band v. 39,, Heft no. 3

    Abstract: In this study, an integrated citric acid-methane fermentation process was established to solve the problem of wastewater treatment in citric acid production. Citric acid wastewater was treated through anaerobic digestion and then the anaerobic digestion ... ...

    Abstract In this study, an integrated citric acid-methane fermentation process was established to solve the problem of wastewater treatment in citric acid production. Citric acid wastewater was treated through anaerobic digestion and then the anaerobic digestion effluent (ADE) was further treated and recycled for the next batch citric acid fermentation. This process could eliminate wastewater discharge and reduce water resource consumption. Propionic acid was found in the ADE and its concentration continually increased in recycling. Effect of propionic acid on citric acid fermentation was investigated, and results indicated that influence of propionic acid on citric acid fermentation was contributed to the undissociated form. Citric acid fermentation was inhibited when the concentration of propionic acid was above 2, 4, and 6 mM in initial pH 4.0, 4.5 and, 5.0, respectively. However, low concentration of propionic acid could promote isomaltase activity which converted more isomaltose to available sugar, thereby increasing citric acid production. High concentration of propionic acid could influence the vitality of cell and prolong the lag phase, causing large amount of glucose still remaining in medium at the end of fermentation and decreasing citric acid production.
    Schlagwörter propionic acid ; wastewater ; recycling ; wastewater treatment ; glucose ; anaerobic digestion ; fermentation ; citric acid ; pH ; isomaltose
    Sprache Englisch
    Dokumenttyp Artikel
    ISSN 1615-7591
    Datenquelle AGRIS - International Information System for the Agricultural Sciences and Technology

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