Literature information of April 2, 20
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The number of articles that can be found with the article number n200402 as the search term: 14; for full-text search, please refer to the content introduction of the article's natural organic matter official website. The historical articles of literature briefing are obtained through the menu "literature & gt; & gt; & gt;" literature briefing ". Long press the article QR code identification can jump to the website of the journal where the article is located, pay attention to the natural organic matter literature briefing applet to obtain the latest 100 literature information.
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This literature review covers the role of biochar as electron acceptor in nitrate reduction [1], the molecular changes of organic matter during ion exchange and membrane treatment [2], the role of fluorescent organic matter in mercury photoreduction [3], the mitigation effect of biochar on aluminum toxicity in acid soil [4], the improvement of bioavailability of DOM in biogas slurry by oxidation and membrane treatment [5], and the role of non-ionic surfactant in composting Influence of organic matter transformation [6], evaluation of organic matter removal efficiency in anaerobic reactor [7], influence of interaction between silicon dioxide and alginate molecules on reverse osmosis membrane pollution [8], influence of organic matter on algal toxicity in biosynthesis of nano silver ions [9], response of extracellular polymers to biofilm formed by photofermenting bacteria [10], absorption and fixation of organic matter on organic matter reflective cesium in sediment of Fukushima River Influence [11,13], contribution of organic nitrogen to river nitrate [12], adsorption and transport mechanism of antimony on Mn modified biochar [14].
1. Title: biochar acting as an electronic acceptor reduces initiate remove in woodchip denitifying bioreactors Article No.: n20040214
Journal: Economic Engineering
By: bahareh hassanpour, Seyed fardad Riazi, Erin g. Menzies plug, Larry D. geohring, Christian D. Guzman, tammo s. steenhuis
Update time: April 2, 2020
Abstract: woodchip denitifying bioreactors mite nitrate loading from agricultural use effects. Biochar is considered as an amendment to woodchips. Research findings are contractual regulating the effect of biochar on nitrate removal. The current study is aimed at investigating the effect of biochar on the removal of nitrate in denitifying bioreactors. For this purpose, laboratory and field experiments were carried out. In the laboratory, cylindrical up-flow bioreactors were used that were filled with woodchips and oxidized biochar at rates of 0%, 12.5%, 25%, 50% by volume. The removal of nitrate was investigated at two stages: unaged and aged for 16 weeks. The bioreactors were operated at four hydraulic retention times of 2, 4, 8, and 24 h. Additionally, we measured the concentrations of greenhouse gases in the laboratory bioreactors. In the field, nitrate removal over a 6-year period was investigated in two denitrifying bioreactors, one of which amended with 10% fresh biochar. The laboratory experiments showed that, on average, oxidized biochar (OB) amendment reduced nitrate removal by 9% in unaged and 13% in aged bioreactors while the respiration was equal or greater. This led us to conclude that oxidized biochar acted as an electron acceptor. In addition, oxidized biochar increased greenhouse gas concentrations. In the field bioreactors, fresh biochar initially increased nitrate removal. However, biochar became less effective over six years. In the final year, the biochar-amended bioreactor removed less nitrate than the woodchip bioreactor, which was ascribed to the electron-accepting ability of biochar due to aging. In sum, our study showed that biochar's electron acceptability significantly reduced denitrification in denitrifying bioreactors.
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2. Title: molecular level characterization of ion exchange water treatment combined to ceramic membrane filtration Article No.: n20040213
Journal: Environmental Science: Water Research & Technology
By Alan J.R. Smith, Graeme Moore, Andrea semiao, Dusan uhrin
Update time: April 2, 2020
Abstract: FT-ICR MS, NMR and ATR-FTIR were used to gain insight into the dissolved organic matter (DOM) removal process throughout a pilot water treatment system. The pilot plant under study utilises suspended ion exchange (SIX) followed by in-line coagulation with (ILCA) polyaluminium chloride and ceramic membrane filtration (CMF). MS results indicate that the SIX treatment is removing DOM irrespective of the compound type (>90% formulae similarity between SIX treated and raw water). However, the ILCA-CMF treatment substantially altered the chemical composition of the DOM by removing a high proportion of the aromatic and phenolic compounds. This was also confirmed by NMR and ATR-FTIR. An adjoining WTW plant which uses the same coagulant as the pilot plant, flocculation mixers for inline flocculation and filtration via MEMCOR? hydrophilic membranes did not show any selectivity when processing the same inlet water. Removal of aromatics/polyphenols in the pilot plant can therefore be attributed to the CMF step. Removal of aromatic/phenolic compounds is important, as these are known to react more readily with chlorine, potentially producing trihalomethanes - substances regulated in potable water.
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3. Title: the role of fluorescence solved organic matter on mercury photoeducation rates: a case study of three temperature lakes Article No.: n20040212
Journal: geochimica et cosmochimica Acta
By jisook Yang, jihee Kim, Anne L. Soerensen, woojin Lee, Seunghee Han
Update time: April 2, 2020
Abstract: in this study, we explored how different DOM components influence the Hg (II) photoreducation rate constant (KR) in lake surface water. For this purpose, the kr and the fluorescence properties of DOM were obtained from three Korean lakes with different trophic states. Three major fluorophores were identified by excitation-emission matrix fluorescence spectroscopy combined with a parallel factor analysis: plant-derived terrigenous humic-like DOM (C1), autochthonous DOM (C2), and soil fulvic-like DOM (C3). The principal component analysis (PCA) loading matrix demonstrated that kr increases when bulk DOM has high flavin-like and soil-derived fulvic-like fractions. The results of a Pearson's correlation agreed with the outcome of the PCA analysis: kr showed a strong positive correlation with the soil fulvic-like DOM component (r = 0.92) and the redox index (r = 0.92). This was further confirmed by a partial least squares-regression model that predicted kr (r = 0.99) using multiple DOM components. Overall, our results suggest that kr can be modeled using fluorescence intensities of diverse DOM components, which in turn has the potential to be incorporated into Hg biogeochemical models to better predict the variability of Hg redox rates across lake systems.
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4. Topic: biochar increases nitrogen use efficiency of make by relaxing Aluminum City and improving soil quality in acid soil Article No.: n20040211
Journal: ecological and environmental safety
By: Hao Xia, Muhammad Riaz, Mengyang Zhang, Bo Liu, Zeinab El desouki, cungang Jiang
Update time: April 2, 2020
Abstract: the low nitrogen use efficiency (NUE) of fertilizers and aluminum toxicity are major limiting factors for crop development in red soil (acid soil) of China. Biochar is a promising material for improving soil quality, alleviating aluminum and acidic toxicity. The present study was conducted on maize to evaluate the effects of biochar on NUE and soil quality under different applications of nitrogen fertilizer. Biochar was used in the following five levels in each pot; C0 (0 g), C1 (7.5 g), C2 (15 g), C3 (30 g), C4 (45 g), in combination with δ15N at two N levels: N0 (0 g kg?1) and N1 (0.2 g kg?1). The biochar increased soil nutrients, exchangeable cation, and SOM. Compared with C0, the K+, Ca2+, and Mg2+ were increased by 31.58%, 95.87%, and 463.75% while total Al3+ content of C4 treatment was decreased by 91.98%–93.30% in soil, respectively. X-ray diffraction (XRD) and energy dispersive spectrometer (EDS) showed that Al2SiO5 was adsorbed on the surface of biochar in the soil due to the special physical structure of biochar. Besides, the results showed that root and shoot biomass increased by 44.5% and 89.6%, respectively under biochar treatment. The nitrogen utilization rate of the plant was increased by 11.08% after the amendment of biochar to soil. The δ15N content was increased from 11.97 to 21.32 for root and from 50.84 to 82.33 mg kg?1 for the shoot. The use of biochar with N fertilizer showed a more positive effect on improving NUE of maize and facilitating soil quality. Our results suggest that biochar could be used to improve soil available nutrients, alleviate aluminum toxicity and acidic toxicity. Therefore, biochar could also increase the NUE of maize by adjusting soil quality.
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5. Topic: bioavailability of dissolved organic matter in biogas systemic enhanced by quantitative zoning combined with membrane separation Article No.: n20040210
Journal: ecological and environmental safety
By: Lipeng Gu, Xin Tang, Ying sun, Huijuan Kou
Update time: April 2, 2020
In this paper, the author analyzes the characteristics of bioavailable dissolved organic phosphorus (TB-DOP), optimum catalytic ozonation of L-PBS conditions were determined using Box-behnken design models (P < 0.0001) and intersection tests. The optimal values for ozone concentration, pH value, active catalyst concentration and reaction time were 2.63 mg·L?1, 6.48, 1.43 g·L?1 and 40 min, respectively. Catalytic ozonation can effectively decompose and transform 68.07% of L-PBS into S-PBS to improve content organic bioavailability, with a molecular weight distribution of 0–1 kDa (13.53%), 1–5 kDa (16.62%), 5–10 kDa (11.16%), 10–30 kDa (11.73%), 30–100 kDa (15.04%). Catalytic ozonation of L-PBS can reduce protein levels from 85.28% to 47.18%, but increases the proportion of fulvic and humic components from 10.22% to 32.67% and 4.51%–20.15%, respectively. Because catalytic ozonation changes the internal