Microbial uniqueness of architecture modified loofah sponge as biological filler for efficient nitrogen removal. (September 2018)

• Record Type: Journal Article
• Authors: Tian, Qing; Zhu, Jiachao; Liang, Xing; Zhu, Yanbin; Sand, Wolfgang; Yang, Jianpeng; Li, Fang; Ma, Chunyan; Liu, Yanbiao; Yang, Bo
• Is Part Of: Bioresource technology reports. Volume 3(2018)
• Page Start: 95
• Page End: 101
• Publication Date: 2018-09
• Subjects: Nitrogen removal -- Architecture-modified-biofiller -- Denitrification -- Functional genes -- Microbial communities -- Anaerolinea Chloroflexi -- Lentimicrobiaceae; Biomass energy -- Periodicals; Biotransformation (Metabolism) -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Waste products as fuel -- Periodicals; Waste products as fuel; Organic wastes; Factory and trade waste; Biotransformation (Metabolism); Biomass energy; Agricultural wastes; Periodicals; Electronic journals; 662.88
• DOI: 10.1016/j.biteb.2018.06.006
• Languages: English
• ISSNs: 2589-014X

Abstract

Abstract: By shrinking the major central apertures in the natural loofah sponge, it is easy to establish inner-DO-reduced-zones within the biofiller. The study compared the performances of two sequencing batch biofilm reactors (SBBR), which were packed with the natural and the major-central-pores-shrunk (the architecture modified) biofillers, respectively. The modified biofillers inhabited higher abundance of anaerobic bacteria, including Lentimicrobiaceae and Anaerolinea Chloroflexi (the acetogenic bacteria). These bacteria were found to closely related to some types of denitrifying bacteria ( Rhodobacteraceae ). The relative abundance of narG and nosZ genes in the attached-growth biomass of the architecture modified biofillers were 5% and 10% higher, respectively. The potential nitrogen removal pathways are discussed. This study demonstrated the advances and insight of using the internal closed porous biofiller in Sequencing Batch Biofilm Reactor (SBBR) without deliberately controlling the DO level in the reactor. Highlights: Micro-anaerobic zones established within the nature loofah sponge biofiller by modifying biofiller architecture Lentimicrobiaceae, Saprospiraceae, Anaerolinea Chloroflexi bacterium in the biofilm related closely with denitrification Higher expression of narG and nosZ (5% and 10%) gens in the biofilm of the architecture modified loofah sponge biofiller