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ammonia, etc ; electrochemistry; energy; nanowires; nitrates; Show all 5 Subjects
Abstract:
... Direct electrocatalytic reduction of nitrate (NO₃–) is an efficient route to simultaneously synthesize ammonia (NH₃) and remove NO₃– pollutants under ambient conditions, however, it is hindered by the lack of efficient and stable catalysts. Herein, a self-supported spinel-type MnCo₂O₄ nanowire array is demonstrated for exclusively catalyzing the conversion of NO₃– to NH₃, achieving a high Faradic ...
ammonia, etc ; catalysts; electrosynthesis; molecular dynamics; nitrate reduction; nitrates; Show all 6 Subjects
Abstract:
... Electrocatalytic nitrate reduction to ammonia (NO₃RR) is an attractive route for renewable NH₃ electrosynthesis. Herein, we demonstrated Se-vacancy-rich WSe₂ (WSe₂₋ₓ) nanoplatelets as a highly efficient NO₃RR catalyst, exhibiting a NH₃-Faradaic efficiency of 92.7 % with the corresponding NH₃ yield of 2.42 mg h⁻¹ cm⁻² at −0.8 V, substantially surpassing Se-vacancy-free WSe₂ nanoplatelets. Theoretic ...
ammonia, etc ; ammonium; anaerobic ammonium oxidation; dissolved oxygen; nitrites; oxidants; oxidation; sludge; China; Show all 9 Subjects
Abstract:
... Residual ammonium is a critical parameter affecting the stability of mainstream partial nitritation/anammox (PN/A), but the underlying mechanism remains unclear. In this study, mainstream PN/A was established and operated with progressively decreasing residual ammonium. PN/A deteriorated as the residual ammonium decreased to below 5 mg/L, and this was paralleled by a significant loss in anammox ac ...
... Pepper/Chilli leaf curl virus disease (PepLCVD/ChiLCVD) is the most destructive disease of pepper that seriously reduced pepper production. The LCVD is transmitted by vector whitefly (Bemisia tabaci) so efficiently that even single whitefly is able to transmit the virus. The effective way to manage the LCVD in pepper is to introduce LCVD resistance into agronomically desired cultivars, but the lac ...
ammonia, etc ; cellulose; color; food chemistry; freshness; minced pork; nanofibers; pH; permeability; radishes; refrigeration; temperature; transmittance; water vapor; Show all 14 Subjects
Abstract:
... A cellulose nanofiber (CNF)-based pH-sensitive indicator was developed by mixing CNF with red radish color extract (RRCE) to analyze the freshness of minced pork. Among various mixing conditions of RRCE solutions (0.4–1.6%) and CNF (0.5–1.25%), 0.8% RRCE/1% CNF showing higher mechanical properties, lower response to water, lower leakage of RRCE, and higher sensitivity to ammonia was selected as op ...
ammonia, etc ; Thauera; anaerobic ammonium oxidation; denitrification; environment; municipal wastewater; nitrates; nitrites; nitrogen; sludge; total nitrogen; wastewater treatment; Show all 12 Subjects
Abstract:
... The stable nitrite (NO₂⁻-N) generation and rapid startup of anammox-based process are the main bottlenecks hindering its application in mainstream municipal wastewater treatment. In this study, a Partial-Denitrification (PD) system reducing nitrate (NO₃⁻-N) to NO₂⁻-N was rapidly developed within 40 days, using the nitrification/denitrification sludge from wastewater treatment plant. The NO₃⁻-N to ...
ammonia, etc ; Euryarchaeota; anaerobic digestion; biogas; economic performance; energy balance; energy efficiency; methane production; pig manure; thermal hydrolysis; China; Show all 11 Subjects
Abstract:
... Anaerobic digestion (AD) of swine manure (SM) commonly shows low biogas output and unsatisfactory economic performance. In this study, thermophilic AD (TAD, 50 ± 1 °C) was combined with thermal hydrolysis pretreatment (THP, 170 °C/10 bar), to investigate its potential for maximizing biogas yield, securing successful digestion and microbial diversity, as well as improving energy balance. Four lab-s ...
... In traditional industry, amidated pectin was usually prepared by adding ammonia gas under the alkaline condition or ethanol system which degrades the galacturonic acid chain of pectin and weakens the advantage of amidated pectin in gel. In this study, amidated pectin with ultra-high viscosity and low gelation restriction were prepared by grafting with the neutral aliphatic amino acids through enzy ...
ammonia, etc ; acidification; aeration; ammonification; ammonium nitrogen; biochemical pathways; biodegradation; cathodes; chemical oxygen demand; demethylation; fermentation; hydrolysis; metagenomics; microbial communities; nitrification; oxygen; toxicology; wastewater; Show all 18 Subjects
Abstract:
... Recalcitrant and toxicological membrane-making wastewater displays negative impacts on environment, and this is difficult to treat efficiently using conventional hydrolytic acidification. In this study, a novel electro-assisted biological reactor with micro-aerobic cathode (EABR-MAC) was developed to improve the biodegradation and ammonification of N, N-dimethylformamide (DMF) in membrane-making w ...
Sulafa B.H. Hashim; Haroon Elrasheid Tahir; Li Lui; Junjun Zhang; Xiaodong Zhai; Amer Ali Mahdi; Nosyba A. Ibrahim; Gustav Komla Mahunu; Mahmoud M. Hassan; Zou Xiaobo; Shi Jiyong
ammonia, etc ; Chinese cabbage; Helianthus annuus; agar; anthocyanins; antioxidant activity; biomarkers; breasts; chickens; color; food chemistry; freshness; hydrophobicity; light; methylcellulose; microstructure; pH; permeability; water vapor; Show all 19 Subjects
Abstract:
... Innovative pH-colorimetric sensor film was fabricated from agar and methylcellulose matrix (AM) with various concentrations of sunflower wax (SFW) (6%, 9%, 12%, and 15% w/w) combined with purple Chinese cabbage (CPC) anthocyanins for tracking chicken breast freshness. A bio-composition film AM/CPC with (hydrophobic) SFW exhibited significant color variations in acidic pH level of (2–6) and a sligh ...
... Potential pH-responsive films were developed based on incorporating anthocyanin, phycocyanin, and a mixture of anthocyanin-phycocyanin (at a ratio of 3:1 v/v) within composite gelatin (1.5 g / 100 g film solution)/soybean polysaccharide (2.5 g / 100 g film solution) matrices. FTIR and SEM assessments certified the incorporation of the pigments into the film matrices. All the colorimetric films wer ...
... Biochar applied to the soil can contribute to the sustainability of agriculture by promoting ecosystem services. Tea production contributes to addressing hunger and poverty in developing countries. However, little is known about the impact of biochar amendment on ecosystem services in tea plantations. We evaluated ecosystem services from an economic assessment perspective to better understand the ...
... To characterize the involvement of microorganisms in amino acid degradation and fish quality deterioration, three major grass carp spoilage bacteria were artificially inoculated in amino acid solutions (in-vitro) and grass carp flesh (in-situ). Results showed that Pseudomonas putida largely degraded free amino acids and produced 3.78 mM/100 g ammonia in grass carp flesh, relying on its high amino ...
... The efficacy of red onion peel methanol extract to prevent dry rot in potato tubers caused by Fusarium sambucinum was investigated. At 20 mg mL⁻¹, the methanol extract caused a great decrease in the fungal growth and spore germination by 86.3 %, and 91.2 %, respectively. Also, the dry rot control efficacy in potato slices inoculated with F. sambucinum reached 91.8 % at the same concentration. The ...
... The increasing application of anammox processes suggests their enormous potential for nitrogen removal in wastewater treatment facilities. However, the functional potentials and ecological differentiation of cooccurring anammox species in complex ecosystems have not been well elucidated. Herein, by utilizing functional reconstruction and comparative genome analysis, we deciphered the cooccurring m ...
... Pichia guilliermondii has been shown to control fungal decay in various harvested fruits by inducing disease resistance, but the transcriptional regulatory mechanism remains unclear. In our study, P. guilliermondii treatment induced resistance against soft rot caused by Rhizopus stolonifer in peach fruit, as shown by the reduced disease incidence and severity, increased enzyme activities and gene ...
... The cryptomelane-type manganese oxide (OMS-2)-supported Co (xCo/OMS-2; x = 5, 10, and 15 wt.%) catalysts were prepared via a pre-incorporation route. The as-prepared materials were used as catalysts for catalytic oxidation of toluene (2000 ppmV). Physical and chemical properties of the catalysts were measured using the X-ray diffraction (XRD), Fourier transform infrared spectroscopic (FT-IR), scan ...
... Endogenous hydrocortisone causes detrimental effects on public health and domestic animal products, but the potential mechanisms remain elusive. Hydrocortisone was detected from seventy-two Guanzhong-Black pigs in three replicates (216 samples) (0.00 ± 46.38 μg kg⁻¹), indicating the existence of endogenous hydrocortisone. Herein, we investigated the effects of hydrocortisone on the metabolic signa ...
ammonia, etc ; Achromobacter; Mycobacterium; Stenotrophomonas; antibiotic resistance; antibiotic resistance genes; antibiotics; autumn; biofilm; community structure; hardness; metagenomics; microbial communities; plasmids; plate count; seasonal variation; spring; suburban areas; summer; temperature; total organic carbon; water distribution; water treatment; winter; China; Show all 25 Subjects
Abstract:
... Antibiotic resistance genes (ARGs) are an emerging issue for drinking water safety. However, the seasonal variation of ARGs in drinking water distribution systems (DWDS) is still unclear. This work revealed the tempo-spatial changes of microbial community, ARGs, mobile genetic elements (MGEs) co-occurring with ARGs, ARG hosts in DWDS bulk water by means of metagenome assembly. The microbial commun ...
... Ammonia is one of the most significant environmental pollutants affecting aquatic animals under culture conditions; however, little is known about ammonia toxicity in marine gastropods. In this study, the effects of different total ammonia concentrations (0.0, 2.5, 5.0, 7.5, and 10.0 mg∙L⁻¹ NH₄Cl) on growth performance, tissue damage, antioxidant capacity, immune function, and body composition wer ...