Abstract:
:The community structure and abundance of ammonia-oxidizing bacteria (AOB) in membrane bioreactors (MBRs) constructed to treat different types of wastewater were analyzed by PCR-DGGE, cloning of 16S rRNA fragments and quantitative real-time PCR techniques. DGGE analysis revealed that the diversity of the ammonia-oxidizing bacterial communities was similar among the four reactors. Additionally, variation in influents had no significant effect on the distribution of the AOB communities. Sequencing analysis of screened clones revealed a wide variety of nitrifying organisms and denitrifying bacteria, which suggests that there may be multiple modes of nitrification and denitrification in MBRs. Real-time PCR revealed that the AOB comprised less than 0.1% of the total bacteria in all MBRs. The free ammonia content of the influent was well correlated with the AOB cell numbers. Taken together, these data suggest that higher NH(4)(+)-N content favors the growth of ammonia oxidizers in MBRs.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Zhang B,Sun B,Ji M,Liu H,Liu Xdoi
10.1016/j.biortech.2009.12.048subject
Has Abstractpub_date
2010-05-01 00:00:00pages
3054-9issue
9eissn
0960-8524issn
1873-2976pii
S0960-8524(09)01713-1journal_volume
101pub_type
杂志文章abstract::Soil amended with different proportions of flyash, a solid waste generated from coal-fired thermal power plants, was evaluated as a soil conditioner and nutrient supplement during a field study on the growth of rice, Oryza sativa. Generally, pH and organic carbon (OC) content did not increase significantly (P > 0.05) ...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/s0960-8524(00)00127-9
更新日期:2001-02-01 00:00:00
abstract::Carboxylated single-walled carbon nanotubes (SWCNTCOOH) were used as support for covalent immobilization of Candida antarctica lipase B (CaL-B) using linkers with different lengths. The obtained nanostructured biocatalysts with low diffusional limitation were tested in batch mode in the ethanolysis of the sunflower oi...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2015.10.072
更新日期:2016-01-01 00:00:00
abstract::The aim of this work was to compare the impact of inoculation density on the rate of cellulose hydrolysis by a rumen derived culture with that of a microbial enrichment from an organic waste anaerobic digester. The results showed a linear relationship between the mass of biomass at the start of the first order degrada...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2007.09.070
更新日期:2008-07-01 00:00:00
abstract::A two-phase and three-phase predictive fluidization model based on the characteristics of a system such as media type and size, flow rates, and reactor cross sectional area was proposed to calculate bed expansion, solid, liquid and gas hold up and specific surface area (SSA) of the biofilm particles. The model was sub...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2010.10.110
更新日期:2011-02-01 00:00:00
abstract::Converting waste to resource may mitigate environmental pollution and global resource limitation. The platform chemical lactic acid can be produced from biowaste and its liquid fraction after solid-liquid separation. A fermentation step for lactic acid production prior to the conversion of biowaste to methane and orga...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2015.09.055
更新日期:2015-12-01 00:00:00
abstract::This work investigated the effects of swine wastewater-derived biogas on microalgae biomass production and nutrient removal rates from piggery wastewater concomitantly with biogas filtration. Photobioreactors with dominant Scenedesmus spp. were prepared using non-sterile digestate and exposed to different photoperiods...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2015.11.082
更新日期:2016-02-01 00:00:00
abstract::A 90-liter stackable pilot microbial fuel cell was designed and proved to be capable for brewery wastewater treatment and simultaneous electricity harvested. The system was stacked by 5 easily-stackable modules, and operated in an energy self-sufficient manner for more than 6 months. Tests were conducted under two dif...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2015.06.026
更新日期:2015-11-01 00:00:00
abstract::A gene (axe) encoding the AXE thermostable esterase in Thermobifida fusca NTU22 was cloned into a Yarrowia lipolytica P01g host strain. Recombinant expression resulted in extracellular esterase production at levels as high as 70.94 U/ml in Hinton flask culture broth, approximately 140 times higher than observed in a P...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2011.05.062
更新日期:2011-09-01 00:00:00
abstract::Scenedesmus raciborskii WZKMT cultured with simulated flue gas was investigated. Cellular components, including total sugar, starch, chlorophyll, protein and lipid, were compared between simulated flue gas and 7% (v/v) CO2. Dissolution of SO2 and NO in simulated flue gas led to pH decrease and toxicity to microalgae c...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2015.04.093
更新日期:2015-08-01 00:00:00
abstract::Hydrothermal liquefaction (HTL) of high-lipid microalgae Nannochloropsis salina (N. salina) and low-lipid microalgae Galdieria sulphuraria (G. sulphuraria) were run under subcritical conditions (310-350 °C and 10-17 MPa) in a 1.8 L batch autoclave system. HTL mass and energy balances for both species were compared und...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2018.02.100
更新日期:2018-06-01 00:00:00
abstract::Phosphoric acid (H(3)PO(4)) and sodium hydroxide (NaOH) treated rice husks, followed by carbonization in a flowing nitrogen were used to study the adsorption of malachite green (MG) in aqueous solution. The effect of adsorption on contact time, concentration of MG and adsorbent dosage of the samples treated or carboni...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2004.12.015
更新日期:2005-09-01 00:00:00
abstract::A cascade process of a rotational drum fermentation system with leachate recirculation from a methanogenic to the acidogenic reactor was constructed to enhance the hydrolysis and acidification of solid organic waste. Using fresh soybean meal as substrates, two process configurations, Cascade process 1 and 2, without a...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2006.08.015
更新日期:2007-08-01 00:00:00
abstract::A novel amino-functionalized hydrothermal biochar modified with nitric acid and nicotinamide (NMSH) was prepared and applied to remove heavy metal in different systems. The study of batch adsorption found that NMSH had different adsorption behaviors for Cr(VI) and Sb(V), and different concentrations of heavy metal ion...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2020.123438
更新日期:2020-08-01 00:00:00
abstract::An aerobic denitrifier was newly isolated and identified as Pseudomonas stutzeri strain XL-2. Strain XL-2 removed 97.9% of nitrate with an initial concentration about 100 mg/L. Nitrogen balance indicates that 12.4% of the initial nitrogen was converted to N2O, and 62.4% was converted to N2. Single factor experiments i...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2017.11.038
更新日期:2018-02-01 00:00:00
abstract::Studies were carried out on the enzyme activities of Pleurotus tuber-regium fruitbodies and sclerotia cultivated in various agro-wastes. Higher activities of proteinase, total amylase, and glucose-6-phosphatase were observed in the sporophores compared to the sclerotia. Cellulase, carboxymethylcellulase and lipase val...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2007.08.053
更新日期:2008-07-01 00:00:00
abstract::Rapid formation of denitrifying sulfide removal granules is of practical interest to start up an expanded granular sludge bed reactor for wastewater treatment. This study demonstrates that methanogenic granules can be easily acclimated into DSR granules in one day, removing all 1.30 kg m(-3) d(-1) sulfide and converti...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2011.01.049
更新日期:2011-04-01 00:00:00
abstract::Cross-linked enzyme aggregates of poly-3-hydroxybutyrate (PHB) depolymerase from Streptomyces exfoliatus (PhaZ(Sex)-CLEAs) have been prepared. Acetone was used as the precipitating agent, while addition of bovine serum albumin (BSA) facilitated CLEAs formation. Conditions for enzyme precipitation and cross-linking hav...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2011.09.035
更新日期:2012-07-01 00:00:00
abstract::The aim of this study was to evaluate the potential of Hancornia speciosa GOMES (mangaba) seeds as a novel matrix for the production of bio-oil. The study was divided into three steps: (i) characterization of the biomass (through elemental analysis (CHN), infrared spectroscopy (FTIR-ATR), thermogravimetry (TG), and de...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2015.07.060
更新日期:2015-11-01 00:00:00
abstract::Efforts were made in this study to using an extraction residue of Salvia mitiorrziza Bge (SM), a widely utilized traditional Chinese medicine, as an effective biosorbent of methylene blue from polluted water. Batch experiments were carried out with original and chemical modification, particle size, dosage, solution pH...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2016.07.121
更新日期:2016-11-01 00:00:00
abstract::Main goal of the study was present the results of some respirometric measurements of activated sludge biodegrading the substrate in the wastewater originated in selected sections of the dairy processing line. The following dairy production effluents were analyzed in the research: the pumping station wastewater (combin...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2007.08.077
更新日期:2008-07-01 00:00:00
abstract::Co-composting of pig manure with sawdust was studied in order to characterize the organic transformation during the process, using both chemical and spectroscopic methods. Humic acids (HA) and fulvic acids (FA) were fractionated from immature and mature pig manure compost, and characterized. After 63 days of compostin...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2005.08.024
更新日期:2006-10-01 00:00:00
abstract::The effect of temperature and organic loading rate on the rate of methane production from acidic petrochemical wastewater without neutralization was investigated by continuously feeding an anaerobic upflow fixed-film reactor. The temperatures selected for the studies were 25, 37, 45 and 55 degrees C. Organic loading r...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/s0960-8524(01)00142-0
更新日期:2002-03-01 00:00:00
abstract::The soil bacterium Arthrobacter aurescens SK 8.001 produces inulin fructotransferase (IFTase), and liquid chromatography-mass spectrometry (LC-MS) and carbon-13 nuclear magnetic resonance (13C NMR) analysis demonstrated that the main product of the enzyme was difructose anhydride III (DFA III). The IFTase was purified...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2010.08.093
更新日期:2011-01-01 00:00:00
abstract::Microalgae-derived lipids in the form of triacylglycerols (TAGs) are considered an alternative resource for the production of biofuels and food commodities. Large scale production of microalgal TAGs is currently uneconomical. The cost price could be reduced by improving the areal and volumetric TAG productivity. The e...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2013.05.105
更新日期:2013-09-01 00:00:00
abstract::Novel supports for use as cation and anion adsorbents were prepared from lignocellulosics using pine needles and their carboxymethylated forms by network/hydrogel formation with acrylamide and N,N-methylene bisacrylamide. The hydrogels thus prepared were further functionalized by partial alkaline hydrolysis with 0.5 N...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2007.11.044
更新日期:2008-09-01 00:00:00
abstract::The aim of present study was to investigate the effects of nitrogen limitation as well as sequential nitrogen starvation on morphological and biochemical changes in Scenedesmus sp. CCNM 1077. The results revealed that the nitrogen limitation and sequential nitrogen starvation conditions significantly decreases the pho...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2014.01.025
更新日期:2014-03-01 00:00:00
abstract::This study evaluated the influence of a high organic loading rate (OLR) on thermophilic hydrogen production at an up-flow anaerobic packed-bed reactor (APBR) treating a residual liquid stream of a Brazilian biorefinery. The APBR, filled with low-density polyethylene, was operated at an OLR of 84.2 kg-COD m(-3) d(-1). ...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2015.03.035
更新日期:2015-06-01 00:00:00
abstract::The effect of ammonia-N accumulation in a dry anaerobic digestion was studied effectively using pilot-scale thermophilic reactor. Two simulations were prepared to attain C/N ratio 27 and C/N ratio 32 using bio-degradable feedstocks such as food waste, fruit and vegetable waste, green waste and paper waste. Organic loa...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2012.02.028
更新日期:2012-06-01 00:00:00
abstract::The syringyl/guaiacyl ratio was determined for six different Eucalyptus spp. wood clones cultivated in four regions in Brazil. The determinants were made by pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS) and the results were compared with those obtained by alkaline nitrobenzene oxidation method. The S/G rat...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2010.01.012
更新日期:2010-06-01 00:00:00
abstract::Altering recalcitrant structures of bamboo is essential to obtain high yield of bioethanol via bioconversion process. With the goal of improving cell wall digestibility, alkaline liquid hot water was used to pretreat N. affinis. The effects of temperature and alkali dosage on structural alterations were determined by ...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2018.11.088
更新日期:2019-02-01 00:00:00