Abstract：
:The characteristics of dissolved organic matter (DOM) formed in aerobic and anaerobic digestion of excess activated sludge (EAS) was investigated for three total solid (TS) concentrations (1.2, 2.3 and 5.2%) and three temperatures (5, 20 and 35 °C). The results on the overall concentration of DOM evaluated by TOC showed significantly higher values in anaerobic than aerobic digestion (2.8-6.9 times for TS 1.2-5.2% at 20 °C). Data analysis with a first-order sequential reaction model revealed that higher occurrence of DOM in anaerobic digestion was a result of comparatively faster hydrolysis (1.3-5.5 times for TS 1.2-5.2% at 20 °C; 1.4-49.3 times for temperatures 5-35 °C with TS 1.2%) and slower degradation (0.3-1.0 times for TS 1.2-5.2% at 20 °C; 0.5-8.3 times for temperatures 5-35 °C with TS 1.2%). In aerobic digestion, more humic substances were formed; while, in anaerobic digestion, proteins and aromatic amino acids were the major constituents. For both digestions, except for a few exceptions, proteins and humic substances increased as the TS concentration increased; and increasing the temperature led to a decrease in the content of proteins formed in both aerobic and anaerobic digestion, and an increase in the content of humic substances in the aerobic digestion. The UV-absorbing DOM constituents were highly heterogeneous, and were comparatively larger in anaerobic digestion; and did not change significantly with the TS concentrations and temperatures.
journal_name
Chemospherejournal_title
Chemosphereauthors
Du H,Li Fdoi
10.1016/j.chemosphere.2016.10.108subject
Has Abstractpub_date
2017-02-01 00:00:00pages
1022-1031eissn
0045-6535issn
1879-1298pii
S0045-6535(16)31499-0journal_volume
168pub_type
杂志文章相关文献
CHEMOSPHERE文献大全abstract：:Microbial regrowth needs to be managed during water reclamation and distribution. The aim of present study was to investigate the removal and regrowth of Escherichia coli (E. coli) and Salmonella in water reclamation and distribution system by using membrane integrity assay (PMA-qPCR), reverse transcriptional activity...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2015.10.071
更新日期：2016-02-01 00:00:00
abstract：:In this study, the degradation of ciprofloxacin (CIP) was explored using ultraviolet activated persulfate (UV/PS) with 280 nm ultraviolet light-emitting diodes (UV-LEDs), and the toxicological assessment of degrading intermediates was performed using iTRAQ labeling quantitative proteomic technology. The quantitative m...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2016.09.031
更新日期：2016-12-01 00:00:00
abstract：:Cadmium-mediated microRNAs have become a heavily researched topic. Few studies mention the regulation of autophagy by cadmium through microRNAs, especially regarding poultry. The kidney is one of the organs most severely affected by cadmium, as it is involved in the accumulation of metal ions; causing such types of da...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2018.10.019
更新日期：2019-01-01 00:00:00
abstract：:The fate of spiked anthracene, pyrene and benzo[a]pyrene in soil with or without sewage sludge compost was assessed during a 6-month bioremediation process simulating landfarming. Bioassays and physico-chemical analyses were employed to monitor toxicity change in soil samples and elutriates through ten sampling campai...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2006.03.065
更新日期：2006-11-01 00:00:00
abstract：:In this study, the influence of Na2SO4 on electro-dewatering (EDW) of waste activated sludge (WAS) was investigated. The highest water removal efficiency of 42.5% was achieved at the optimum Na2SO4 dosage of 12.5 g kg-1 DS during EDW process at a constant voltage of 20 V. The migration and distribution of water, organ...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2017.09.034
更新日期：2017-12-01 00:00:00
abstract：:Contamination of soil with hydrocarbons occurs frequently when petroleum ducts are damaged. Restoration of those contaminated soils might be achieved by applying readily available organic material. An uncontaminated clayey soil sampled in the vicinity of a duct carrying diesel which ruptured recently, was contaminated...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/S0045-6535(03)00653-2
更新日期：2004-01-01 00:00:00
abstract：:By using dialysis equilibrium experiments, the sorption of a branched nonylphenol isomer [4-(1-ethyl-1,3-dimethylpentyl)-phenol] (NP111) on various humic acids (HAs) isolated from river sediments and two reference HAs was studied. The HAs were characterized by solid-state (13)C direct polarization/magic angle spinning...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2011.03.057
更新日期：2011-07-01 00:00:00
abstract：:Cyclic volatile methylsiloxanes (cVMS) are widely used in consumer products and commonly detected in the environment. There are challenges in the analysis of cVMS because of their ubiquitous use which can introduce high background contamination. The current study introduces a sample preparation method based on headspa...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2020.126304
更新日期：2020-07-01 00:00:00
abstract：:Soil contamination can be one path for streams and groundwater contamination. As a complement of chemical analysis and total contaminants determination, bioassays can provide information on the bioavailable fraction of chemical compounds, focusing on the retention and habitat function of soils. In this study the evalu...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2005.02.070
更新日期：2005-10-01 00:00:00
abstract：:The fluorescence spectra of the condensed species (CS) collected in the soot inception region of a rich premixed laminar ethylene/oxygen flame have been measured by excitation in the UV at 266 and 355 nm excitation wavelength. The contribution of the most abundant polycyclic aromatic hydrocarbons (PAH) to the CS fluor...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/s0045-6535(00)00258-7
更新日期：2001-02-01 00:00:00
abstract：:A series of flow-cell experiments was conducted to investigate aqueous dissolution and mass-removal behavior for systems wherein immiscible liquid was non-uniformly distributed in physically heterogeneous source zones. The study focused specifically on characterizing the relationship between mass flux reduction and ma...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2007.11.064
更新日期：2008-04-01 00:00:00
abstract：:Brominated flame retardants (BFRs) and other persistent organic pollutants have been associated with adverse health outcomes in humans and may be particularly toxic to the developing fetus. We investigated the association between in utero polybrominated biphenyl (PBB) and polychlorinated biphenyl (PCB) exposures and i...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2014.08.007
更新日期：2015-01-01 00:00:00
abstract：:Phosphate (PO43-) removal on calcite often entails two processes: adsorption and precipitation. Separating these two processes is of great importance for assessment of PO43- stability after removal. Thus, this study was aimed at finding a critical range of conditions for separating these two processes in calco-carboni...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2017.05.139
更新日期：2017-09-01 00:00:00
abstract：:The inclusion complexes of beta-cyclodextrin-isoproturon were prepared using techniques such as kneading, co-evaporation, and co-precipitation. These complexes were characterised for physical properties and spectral studies such as UV, FTIR, and 1HNMR spectroscopy. To investigate the stoichiometry of the complexes Pha...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/S0045-6535(03)00099-7
更新日期：2003-06-01 00:00:00
abstract：:A radiological evaluation associated to the future mining of grey monazite nodules enriched in light rare-earths, from a modest superficial deposit located in the centre of Spain, has been performed at pre-operational level, and the main results are shown in this paper. Although the monazite nodules in the deposit are...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2018.06.032
更新日期：2018-10-01 00:00:00
abstract：:Foliar emission of volatile organic compounds (VOC) from common Indian plant species was measured. Dynamic flow enclosure technique was used and the gas samples were collected onto Tenax-GC/Carboseive cartridges. The Tenax-GC/Carboseive cartridges were attached to the thermal disorber sample injection system and the g...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2005.01.046
更新日期：2005-06-01 00:00:00
abstract：:Cleanup goals for sites contaminated with persistent organic pollutants (POPs) are often established based on total contaminant concentrations. However, mounting evidence suggests that understanding contaminant bioavailability in soils is necessary for accurate assessment of contaminant exposure to humans via oral ing...
journal_title：Chemosphere
pub_type： 杂志文章,评审
doi：10.1016/j.chemosphere.2016.02.041
更新日期：2016-05-01 00:00:00
abstract：:Rice husk is a common agricultural waste. The utilization of rice husk biochar depends on the characteristics of biochar and its interaction mechanisms with heavy metals. In the present study, rice husk biochars at three different temperatures 300, 500, and 700 °C were produced (RH300, RH500, and RH700). The character...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2019.06.237
更新日期：2019-11-01 00:00:00
abstract：:We investigate the use of probabilistic neural networks (PNN) to model the acute toxicity (96-hr LC50) to the fathead minnow (Pimephales promelas) based on a 865 chemicals data set. In contrast to most other toxicological models, the octanol/water partition coefficient is not used as input parameter. The information f...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/s0045-6535(99)00553-6
更新日期：1999-06-01 00:00:00
abstract：:A modified quick, easy, cheap, efficient, rugged and safe method (QuEChERS) coupled to gas chromatography with electron capture detector (GC-ECD) was developed for rapid extraction and simultaneous determination of 36 pesticides in lotus seeds. The extraction solvent (acetone, ethyl acetate, acetonitrile, n-hexane and...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2013.01.104
更新日期：2013-05-01 00:00:00
abstract：:Bisphenol A (BPA) is one of the most prevalent chemicals in many products used on a daily basis, making human exposure to it incredibly pervasive and raising concerns about its health consequences. One area of research focus has been the role of BPA exposure in promoting the development of ovarian cancer; however, the...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2017.07.027
更新日期：2017-10-01 00:00:00
abstract：:The photochemical reaction between biphenyl (Bp) and N(III) under irradiation at 365 nm UV light was investigated. The results showed that Bp conversion efficiency was strongly influenced by N (III) concentration, Bp initial concentration and pH. Species-specific rate constants determined by reaction of Bp with H2ONO+...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2016.10.010
更新日期：2017-01-01 00:00:00
abstract：:Polysaccharide fouling poses a significant challenge in the widespread application of membrane filtration for water purification. In order to mitigate the problem, a polysaccharide-degrading enzyme alginate lyase (Alg L; EC 4.2.2.3) was successfully immobilized on cellulose acetate ultrafiltration membrane using a dea...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2016.09.017
更新日期：2016-12-01 00:00:00
abstract：:The oxidation of organic micro-pollutants by biogenic manganese oxide nanoparticles (BioMnOx) has been studied with respect to possible implementation of BioMnOx in wastewater treatment. For this it would be prerequisite that microbial Mn(2+) oxidation and BioMnOx-driven pollutant removal can occur in situ, i.e. in th...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2014.11.059
更新日期：2015-10-01 00:00:00
abstract：:This study principally focused on a new kind of photochemical reaction catalyst: porphyrin and phthalocyanine complexes. In a first step, the preparation of the catalysts was optimized. A resin has been chosen to be the support of the complexes. Efficiency of catalytic activity is performed on the degradation of a pes...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/s0045-6535(99)00474-9
更新日期：2000-08-01 00:00:00
abstract：:The present study reports on the mercury concentrations of the vestimentiferan worm, Lamellibrachia satsuma, (Annelida: Pogonophora) found near hydrothermal vents at a depth of 80-100 m in the northern parts of Kagoshima Bay. The vestimentiferan worms had total mercury concentrations of 238 ng/g in the anterior muscle...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/s0045-6535(02)00291-6
更新日期：2002-11-01 00:00:00
abstract：:This study investigates the geochemical characteristics of recent shallow-water aragonite-rich sediments from the karstic marine lakes located in the pristine environment on the island of Mljet (Adriatic Sea). Different trace elements were used as authigenic mineral formation, palaeoredox and pollution indicators. The...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2016.10.134
更新日期：2017-02-01 00:00:00
abstract：:Polysulfide was produced and tested for use as an inexpensive chemical agent for the solidification/stabilization of lead in fly ash, generating little hydrogen sulfide gas. According to the equations S(n)(2-)-->S+S(n-1)(2-) and S(n)(2-)+H(+)-->HS(-)+S(n-1), this agent was expected to achieve long-term stability of di...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2010.07.008
更新日期：2010-09-01 00:00:00
abstract：:Lead (Pb) complexed with dissolved organic matter (DOM-Pb) is a dominant Pb species in soils, but it is not clear that DOM-Pb is stably immobilized by hydroxyapatite. This study investigates how DOM-Pb is immobilized by hydroxyapatite in both aqueous solutions and soils. A sorption test showed that 69.5% of DOM-Pb is ...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2020.126122
更新日期：2020-06-01 00:00:00
abstract：:The emissions of polybrominated diphenyl ethers (PBDEs), polybrominated dibenzo-p-dioxins and dibenzofurans (PBDD/Fs) and their chlorinated analogues (PCDD/Fs) during the thermal treatment of a high impact polystyrene (HIPS) TV casing were investigated. The halogenated compounds were analyzed in the original material ...
journal_title：Chemosphere
pub_type： 杂志文章
doi：10.1016/j.chemosphere.2014.10.085
更新日期：2015-03-01 00:00:00
