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biomass, etc ; aerosols; algorithms; comparative study; mass spectrometry; spectrometers; China; Show all 7 Subjects
Abstract:
... The real-time detection of the mixing states of polycyclic aromatic hydrocarbons (PAHs) and nitro-PAHs in ambient particles is of great significance for analyzing the source, aging process, and health effects of PAHs and nitro-PAHs; yet there is still few effective technology to achieve this type of detection. In this study, 11 types of PAH and nitro-PAH standard samples were analyzed using a high ...
Charlotte Védère; Manhattan Lebrun; Philippe Biron; Séverine Planchais; Marianne Bordenave-Jacquemin; Nicolas Honvault; Stéphane Firmin; Arnould Savouré; David Houben; Cornelia Rumpel
belowground biomass; biomass production, etc ; biochar; climate change; composts; drought; environment; gas exchange; leaves; plant growth; proline; soil; soil enzymes; stomatal conductance; water shortages; water stress; water use efficiency; Show all 17 Subjects
Abstract:
... Due to increased drought frequency following climate change, practices improving water use efficiency and reducing water-stress are needed. The efficiency of organic amendments to improve plant growth conditions under drought is poorly known. Our aim was to investigate if organic amendments can attenuate plant water-stress due to their effect on the plant-soil system and if this effect may increas ...
biomass, etc ; biochar; energy; hydrogen; hydrolysis; nitrides; oils; pyrolysis; surface area; temperature; Show all 10 Subjects
Abstract:
... To improve on existing pyrolytic products and understand the role played by the anion during catalytic pyrolysis with iron salts, different iron salt types were studied for biomass pyrolysis. The results demonstrate that iron salts promoted the cracking of biomass, decreased the precipitation temperature of the volatiles, and increased the production of char and hydrogen. Specifically, the additio ...
biomass, etc ; computer software; forestry; linear models; paper; prediction; pyrolysis oils; solubility; Show all 8 Subjects
Abstract:
... There is increasing growth in research of the development, upgrading and valorization of forestry and agriculture-derived products for applications in fuels, chemicals, and materials. Many biochemical and thermochemical biomass conversion technologies yield unique products for which laboratory characterization of structure and properties is still an ongoing challenge. Historically, popular approac ...
biomass, etc ; aerosols; air quality; carbon; emissions factor; humans; China; India; Laos; Myanmar; Show all 10 Subjects
Abstract:
... Black carbon (BC) has importance regarding aerosol composition, radiative balance, and human exposure. This study adopted a backward-trajectory approach to quantify the origins of BC from anthropogenic emissions (BCAn) and open biomass burning (BCBB) transported to Xishuangbanna in 2017. Haze months, between haze and clean months, and clean months in Xishuangbanna were defined according to daily P ...
biomass, etc ; carbon; combustion; environment; nitrates; oxygen; oxygen isotopes; photochemistry; pollution; vapors; China; Show all 11 Subjects
Abstract:
... Atmospheric nitrate (NO₃⁻) produced by photochemical oxidation in the atmosphere has high oxygen isotope ratios (δ¹⁸O values). Recently, the primary NO₃⁻ emitted from combustion sources was found to have much lower δ¹⁸O values. However, it is unclear how and to what extents the low δ¹⁸O signatures were controlled by major O sources during the primary NO₃⁻ formation of combustion processes. Here, w ...
biomass, etc ; activation energy; adsorption; biochar; bisphenol A; carbon; environment; organic matter; pyrolysis; Show all 9 Subjects
Abstract:
... Activators affect the physical and chemical properties of carbon products. However, the effects of different activation mechanisms and pyrolysis conditions on the properties of carbon products still need to be explored. In this study, we obtained a new biochar by impregnation of reed powder with an alkali metal salt (CaCl₂) under a specific pyrolysis procedure and pyrolysis conditions. Impregnatio ...
microbial biomass, etc ; carbon dioxide; fungi; toluene; volatile organic compounds; wheat straw; China; Show all 7 Subjects
Abstract:
... As a common practice in agricultural system, straw return has been reported to release a large number of trace gases and attracted much attention. However, the role of straw return in toluene emission remains poorly understood. In this study we measured the emissions of toluene as well as other 50 volatile organic compounds (VOCs) from wheat straw return for 66 days under flooded and non-flooded c ...
biomass, etc ; alternative fuels; coal; combustion; corn; heating systems; pollutants; straw; variance; villages; China; Show all 11 Subjects
Abstract:
... Straw pellets are widely promoted and expected to be a cleaner alternative fuel to unprocessed crop residues and raw coal in rural China. However, the effectiveness of these dissemination programs is not well evaluated. In this field study, emission characteristics of burning straw pellets, raw coal, and unprocessed corn cobs in heating stoves were investigated in a pilot village in Northeast Chin ...
biomass, etc ; algorithms; ash content; biofuels; combustion; combustion efficiency; data collection; energy; neural networks; Show all 9 Subjects
Abstract:
... The slagging problem that occurs during the combustion of biomass fuels is difficult to deal with, affecting the safe operation of the boiler and reducing the combustion efficiency. Predicting the slagging tendency of biomass combustion can guide the selection of fuel, reduce the experimental cost and improve the production efficiency of the boiler. In this paper, 114 kinds of biomass are selected ...
biomass, etc ; Mytilus coruscus; bacterial communities; community structure; environment; mariculture; microorganisms; seawater; species diversity; Show all 9 Subjects
Abstract:
... Research to assess the impacts of mariculture on the microbiota of the surrounding environment is still inadequate. Here, we examined the effects of Mytilus coruscus farming on the diversity of bacterial community in surrounding seawater using field investigations and indoor simulations, focusing on the variation of members of aerobic anoxygenic photoheterotrophic (AAP) bacteria. In the field, Myt ...
biomass, etc ; adhesion; calcium silicate; dolomite; energy; liquids; magnesium silicates; rice straw; temperature; thermodynamics; Show all 10 Subjects
Abstract:
... A self-designed tester is used to study the ash adhesion strength of straw biomass and the effect of dolomite additive. TG-DSC, SEM-EDX, XRD and thermodynamic equilibrium are applied to analyze the thermal behaviors, mineral transformation and liquid phase formations of ash samples. The results indicate that the adhesion strength of rice straw ash appears at 600 °C, increases rapidly above 700 °C, ...
biomass, etc ; air; atmospheric circulation; coal; combustion; models; molecular weight; seasonal variation; summer; China; Show all 10 Subjects
Abstract:
... The study of atmospheric polycyclic aromatic hydrocarbons (PAHs) in northeastern Tibetan Plateau with fragile ecological environment and complex atmospheric circulation system is blank. To understand the characteristics and sources of persistent organic pollutants in the atmosphere of the northeastern Tibetan Plateau, we monitored levels in the central Qilian Mountain. From 2016 to 2017, we collec ...
biomass, etc ; ducks; ecosystems; environment; herbivores; invertebrates; omnivores; piscivores; shorelines; steppes; water birds; Kazakhstan; Show all 12 Subjects
Abstract:
... Inland saline waters in Central Asia constitute an important part of steppe ecosystems, providing considerable ecological functions and ecosystem services. Here we aim to present a multi-spatial scale analysis of nutrient cycling and transport waterbird guilds, and the environmental attributes of saline-soda aquatic ecosystems in Kazakhstan. The density, biomass, and diversity of waterbird guilds ...
biomass, etc ; calcium oxide; clean energy; feedstocks; gasification; hematite; oxygen; steam; synthesis gas; temperature; China; Show all 11 Subjects
Abstract:
... Syngas is a clean energy carrier and a major industrial feedstock. In this paper, syngas was produced via biomass chemical looping gasification (CLG) process. Hematite, the most common Fe-based oxygen carrier (OC), was modified with different metal oxides (CeO₂, CaO and MgO) by the impregnation method. The hematite modified by CeO₂, CaO and MgO was namely as CeO₂-hematite (CeO₂-H), CaO-hematite (C ...
... Janus membranes have attracted much attention for switchable oil/water separation because they have opposite wetting behavior on each side. However, it remains a challenge to fabricate Janus membranes with asymmetric wettability from biomass by simple methods. Herein, we prepared a flexible Janus wood (JW) membrane by cutting the natural wood along the longitudinal direction, followed by a facile ...
... Nitrogen-doped carbon dots (N-CDs) were synthesized hydrothermally using abundantly accessible pitaya peel and 1,2-ethylenediamine as precursors. N-CDs exhibited favorable photostability, which can serve as a multifunctional nano-sensor for detection of three tetracycline antibiotics (TCs) based on fluorescence (FL) dual-mode sensing strategy. The FL intensity of N-CDs could be rapidly quenched by ...
... In this work, a sequential fractionation protocol (cold and hot aqueous and alkaline extractions) and detailed compositional analysis (gross composition, monosaccharide analysis, FTIR, TGA) was applied to three relevant mushrooms in terms of global production (Grifola frondosa, Lentinula edodes and Pleurotus ostreatus) aiming to understand what is preferentially extracted during fractionation and ...
... High phosphorus steel slag and carbonized rice husk are two common wastes characterized by high generation and low secondary use values. Through the reduction of high phosphorus steel slag by biomass, both wastes were fully utilized, thus reducing the negative impact on the environment. In this study, variables such as temperature, time, and amount of reactants were changed to determine the optima ...
woody biomass, etc ; DNA barcoding; Gloeophyllum trabeum; Picea abies; brown-rot fungi; decayed wood; forest litter; lignocellulose; Show all 8 Subjects
Abstract:
... In forest ecosystems, fungi are the key actors in wood decay. They have the capability to degrade lignified substrates and the woody biomass of coniferous forests, with brown rot fungi being common colonizers. Brown rots are typically involved in the earliest phase of lignocellulose breakdown, which therefore influences colonization by other microorganisms. However, few studies have focused on the ...