Visible-Light-Induced photocatalytic oxidation of gaseous ammonia on Mo, c-codoped TiO2: Synthesis, performance and mechanism

Chemical Engineering Journal, Год журнала: 2024, Номер 482, С. 148811 - 148811

Опубликована: Янв. 21, 2024

Язык: Английский

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Synergetic effect and mechanism of elementary sulphur, MgSO4 and KH2PO4 progressive reinforcement on pig manure composting nitrogen retention

Environmental Pollution, Год журнала: 2023, Номер 331, С. 121934 - 121934

Опубликована: Май 30, 2023

Язык: Английский

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Low Cost, Flexible, Room Temperature Gas Sensor: Polypyrrole-Modified Laser-Induced Graphene for Ammonia Detection

IEEE Sensors Journal, Год журнала: 2024, Номер 24(7), С. 9366 - 9374

Опубликована: Фев. 28, 2024

The electrochemical synthesis of polypyrrole (PPy) on laser-induced graphene (LIG) electrodes is investigated in this study, along with the gas sensing applications these modified laser-tailored materials. A simple and scalable method for low-cost, large-scale production LIG nanocomposites (PPy@LIG NCs) proposed. This nanocomposite subsequently applied to design chemo-resistive flexible sensors detect ammonia (NH3) levels at room temperature. Following a brief exposure, PPy@LIG NCs demonstrate changes resistance sensitivity 14 times higher than that pure LIG. Moreover, excellent repeatability results low detection limit 1 ppm were achieved. formation PPy confirmed through Raman spectroscopy FTIR spectroscopy. analysis by FE-SEM TEM verified NCs. In conclusion, work introduces novel its application sensing, showcasing their unique selectivity, enhanced sensitivity, cost-effective production. These attributes mark significant step forward, presenting new possibilities development advanced gas-sensing systems aimed improving air quality monitoring.

Язык: Английский

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Acidification of animal slurry in housing and during storage to reduce NH3 and GHG emissions-recent advancements and future perspectives

Waste Management, Год журнала: 2025, Номер 203, С. 114856 - 114856

Опубликована: Май 5, 2025

Ammonia and greenhouse gas emissions are an environmental issue associated with animal manure management. Concrete, practical, economic solutions needed for farmers other stakeholders around the globe to solve this issue. Decreasing slurry pH help of acids or compounds is a well-documented technique reduce ammonia methane from slurry. However, effect acidification on N2O still not clear. Recently, acidifying agents than previously used mineral have been tested such as e.g. organic acids, bio-waste materials, microbial inoculations. effectiveness these in reducing mitigation gaseous further needs be reviewed. Also, combination treatments composting, solid-liquid separation, anaerobic digestion requires consideration whole-system solutions. Here, recent studies compiled reviewed determine applicability options management deepen our understanding impact acidification. The literature review revealed that temperature fluctuations substantial acidified slurry's performance during storage. A viable substitute conventional could biomaterials like sugars whey, microbes. Furthermore, apple pulp, sugar beet molasses, grass silage examples products exhibit promise agents. gain better viability usefulness recently evaluated compounds, more research required.

Язык: Английский

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Effects of Supplemental Benzoic Acid, Bromelain, Adipic Acid, and Humic Substances on Nitrogen Utilization, Urine pH, Slurry pH, and Manure Odorous Compounds in Pigs

Animals, Год журнала: 2023, Номер 14(1), С. 82 - 82

Опубликована: Дек. 25, 2023

The objective was to evaluate the effects of benzoic acid, bromelain, adipic and humic substance supplementation on nitrogen balance, urinary pH, slurry manure odorous compounds in pigs. Fifteen castrated male pigs with an initial body weight 37.9 kg (standard deviation = 4.1) were individually housed metabolism crates. animals allocated a triplicated 5 × 2 incomplete Latin square design 15 animals, experimental diets, periods. basal diet mainly consisted corn, soybean meal, rapeseed meal. Four diets prepared by supplementing each additive at concentration 10 g/kg expense corn starch diet. Each period 4-day adaptation period, 24 h collection for sampling, feces urine. urine collected day mixed ratio fecal obtain samples. apparent total tract digestibility N fed least (

Язык: Английский

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Isolation and application of pH- and salt-resistant Bacillus strains to reduce ammonia emission from pig manure during the storage period

Journal of Applied Microbiology, Год журнала: 2023, Номер 134(7)

Опубликована: Июль 1, 2023

Ammonia released during the storage period from pig manure causes severe air pollution and odor issues, ultimately leading to nitrogen loss in manure. In this study, we investigated application of 13 Bacillus spp. strains isolated paddy soil their potential minimize reactive at 28°C initial moisture content 76.45%.We selected five named H3-1, H4-10, H5-5, H5-9, Y3-28, capable reducing ammonia emissions by 23.58%, 24.65%, 25.58%, 25.36%, 26.82% over 60 days compared control. We further tested ability on various pH, salinity, ammonium-nitrogen concentrations for future field applications. Our investigation revealed that certain bacteria could survive grow pH 6, 8, 10; 4, 10% salinity up 8 g l-1 concentration.The results our study show saline tolerant can potentially reduce manure, even high period.

Язык: Английский

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Prolonging The Time of Manure by Water Soaking Can Alleviate the Inhibition of Lime Disinfection Wastewater in a Swine Manure Anaerobic Digestion System

Опубликована: Янв. 1, 2024

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Язык: Английский

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Flexible Sensor Utilizing Polypyrrole Laser-Induced Graphene Nanocomposite for Room Temperature Ammonia Detection

IEEE Sensors, Год журнала: 2023, Номер unknown

Опубликована: Окт. 29, 2023

This study explores the electrochemical modification of laser-induced graphene (LIG) by incorporating synthesized polypyrrole (PPy) nanocomposites (NCs). We propose a straightforward, and scalable approach for mass production nanocomposites, resulting in PPy@LIG, which we employ chemoresistive gas sensors capable detecting ammonia (NH3) levels at room temperature. Gas exposure 5 minutes demonstrates that PPy@LIG NCs exhibit sensitivity 14 times higher than pure LIG up to 20 terms intensity resistance changes 100 ppm NH3. Moreover, achieve excellent repeatability our results. The synthesis, confirmed through chronopotentiometry, verifies formation PPy nanocomposites. In summary, this work presents first-time utilization sensing, revealing promising characteristics developing unattended gas-sensing networks monitoring air quality.

Язык: Английский

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Ammonia emissions from livestock facilities around an international airport, Tehran, Iran: An experimental and mathematical study

Environmental Progress & Sustainable Energy, Год журнала: 2024, Номер 43(3)

Опубликована: Янв. 9, 2024

Abstract Ammonia emissions from livestock farms are a major problem for staff and residents near these centers. Anaerobic decomposition of waste the collection stacking main sources ammonia gas on farms. This article examined facilities Tehran Imam Khomeini International Airport. First, field measurements were made in summer (30°C), collected samples using indophenol technique. AERMOD, based Gaussian fluctuating plume theory, was constructed to model emissions. According maximum periodic‐seasonal 2‐hourly 8‐hourly concentrations 15.9, 229, 63.7 OU (odor unit per volume)/m 3 , respectively. The hourly emission rate is also 0.0168 gm −2 h −1 . AERMOD results mathematical indicated reasonable agreement with measurement, which coefficient determination ( R 2 ), index (d), efficiency (E) 0.95, 0.97, 0.91, Moreover, Statistical indices, including geometric mean bias (MG), variance (VG), fraction predictions within factor two observations (FAC2), normalized square error (NMSE), root (RMSE) absolute (MAE) by 1.36 0.67, respectively, used assess reliability showed that had good measurement.

Язык: Английский

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Efficacy of Composite Bacterial Deodorant Constructed with Camellia Sinensis and its In-Situ Deodorization Mechanism on Pig Manure

Опубликована: Янв. 1, 2024

Язык: Английский

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