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	1. Aerobic sludge granulation facilitated by granular activated carbon for partial nitrification
	LI Anjie,HOU Baolian
	Environmental Science and Techology 23 June 2014
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Although the use of partial nitrification, or nitritation, for nitrogen removal via nitrite is an energy-saving method for treating high-strength ammonia wastewater, its stable operation with sufficient enrichment of ammonia-oxidizing bacteria (AOB) is difficult to maintain in activated sludge systems. In this study, an aerobic granulation technique was developed for the effective and stable nitritation treatment of ammonia-rich inorganic influent. Granular activated carbon (GAC) was added to the bioreactor to enhance the granulation of slow-growing AOB. The results show that aerobic granules could be formed for partial nitrification through the selective discharge of small and slow-settling sludge flocs, with or without activated carbon addition. However, dosing GAC into the sludge greatly accelerated the granulation process and shortened the granulation period from about 6 weeks to less than 3 weeks with the formation of large and fast-settling granules. Compared to activated sludge flocs, sludge granulation with selective sludge discharge was found to help halt ammonia oxidation to the level of partial nitrification rather than complete nitrification.
	TO cite this article:LI Anjie,HOU Baolian. Aerobic sludge granulation facilitated by granular activated carbon for partial nitrification[OL].[23 June 2014] http://en.paper.edu.cn/en_releasepaper/content/4602129


	2. Preparation and Enhanced Photocatalytic Activity of Heterostructured ZnxCd1-xS/TiO2 nanofibers
	Yang Guorui,Yan Wei
	Environmental Science and Techology 07 November 2012
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:The hierarchical ZnxCd1-xS-TiO2 heterostructures were successfully synthesized by the combination of an electrospinning technique and hydrothermal method. These heterostructures were characterized for the morphological, structural and optical, properties by scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDS), transmission electron micrography(TEM), X-ray diffraction(XRD) and diffuse reflectance UV/visible absorption spectroscopy(UV-vis). The photocatalytic investigation showed that the ZnxCd1-xS-TiO2 heterostructures possessed enhanced photocatalytic efficiency of photodegradation of Rhodamine B (RhB) compared with the primaryTiO2 nanofibers and sole ZnxCd1-xS nanopaticles prepared via hydrothermal process under UV light irradiation.The composite of different semiconductor may facilitate the photogenerated charge carriers separation and transfer due to the difference in the band edge positions.
	TO cite this article:Yang Guorui,Yan Wei. Preparation and Enhanced Photocatalytic Activity of Heterostructured ZnxCd1-xS/TiO2 nanofibers[OL].[ 7 November 2012] http://en.paper.edu.cn/en_releasepaper/content/4493102

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