Article
Environmental Sciences
Richard H. Grant, Matthew T. Boehm, G. Robert Hagevoort
Summary: This study estimates hydrogen sulfide (H2S) emissions from open-lot dairy operations in dry regions. The results show variations in H2S emissions based on different seasons and activities.
JOURNAL OF ENVIRONMENTAL QUALITY
(2022)
Article
Environmental Sciences
Weiwei Pu, Jiujiang Sheng, Ping Tian, Mengyu Huang, Xiangxue Liu, Jeffrey L. Collett, Ziming Li, Xiujuan Zhao, Di He, Fan Dong, Nannan Zhang, Weijun Quan, Yulu Qiu, Yu Song, Weili Lin, Yuepeng Pan, Zhiqiang Ma
Summary: Measurements of ammonia emissions in Beijing using a cavity ring-down spectroscopy NH3 analyzer show that NH3 emissions have a significant impact on the city, with traffic emissions playing a major role in the increase of NH3, carbon dioxide, acetaldehyde, and acetone. The vehicle NH3:CO2 emission ratio is higher than expected, indicating the need for improved NH3 emission estimates and inventory allocations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Linjie Zhang, Lilan Zhang, Yue Shi, Zhihui Yang, Qijun Gong, Dong Sun
Summary: This study developed a method to quantify the variability of oceanic PAHs based on wind frequency and wind-speed-weighted wind frequency. The validity of this method was tested using in-situ survey data and publicly available data from other monsoonal open oceans. The results showed that wind frequency and wind-speed-weighted wind frequency could better explain the variation of dissolved and particulate PAHs in the surface ocean, respectively. This study suggests that the influence of seasonal atmospheric transport is important in describing and interpreting the distribution patterns of PAHs in monsoon-influenced low and mid-latitude open oceans, and provides a reference method for understanding the global-scale distribution patterns of PAHs in the ocean.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Vijay Paidi, Johan Hakansson, Hasan Fleyeh, Roger G. Nyberg
Summary: Parking lots are highly polluted due to congestion and driver frustration caused by vehicles searching for parking spaces. However, there is limited research on open parking lots, particularly on the magnitude of CO2 emissions and cruising. A new study aims to estimate these factors by analyzing thermal camera videos and cruising trajectories.
Article
Agriculture, Dairy & Animal Science
Esperanza Fuertes, Joaquim Balcells, Jordi Maynegre, Gabriel de la Fuente, Laura Sarri, Ahmad Reza Seradj
Summary: This study emphasizes the significant emissions of CH4 and NH3 from manure in compost-bedded pack systems, especially during warmer months. The composting process occurring daily on the manure leads to substantial emissions of these gases. Despite potential benefits to animal health, the environmental impact of contaminant gases from manure in compost-bedded pack systems should be considered.
Article
Energy & Fuels
Fei Zhao, Yalou Li, Xiaoxin Zhou, Dandan Wang, Yawei Wei, Fang Li
Summary: Coal-fired power plants can effectively reduce carbon emissions through ammonia-coal co-firing technology. We propose a low-carbon power supply and multi-timescale energy storage system, which includes batteries, fuel cells and the coal-fired power plant equipped with the ammonia-coal co-combustion module. This system can handle short and long term fluctuations in renewable energy and we use optimization models and simulations to analyze its economic and environmental performances.
Article
Agronomy
Zhu Mei, Haobin Liu, Xuhui Cai, Hongsheng Zhang, Ling Kang, Yujie Cai, Yu Song, Tong Zhu
Summary: Significant uncertainties exist in China's ammonia emission inventories, particularly in livestock husbandry. Three phases of field experiments were conducted in an open-lot dairy to estimate ammonia emissions. The results showed diurnal variations in ammonia emissions from the dairy, with winter peaks around 0.66 g/s and summer peaks around 0.80 g/s. These findings were consistent with similar studies and China's ammonia source inventory.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Engineering, Environmental
Felix Holtkamp, Joachim Clemens, Manfred Trimborn
Summary: This study investigated the use of calcium cyanamide as a slurry additive to reduce ammonia and greenhouse gas emissions in agriculture, showing promising results.
Article
Environmental Sciences
Fan Yang, Yuhua Han, Haitao Bi, Xiao Wei, Wenhai Luo, Guoxue Li
Summary: The study found significant variations in NH3 emission rates across different areas of the dairy farms, primarily influenced by ambient temperature, with the outdoor exercise area being the main contributor to NH3 emissions. Strong relationships between NH3 emissions and relative humidity were found in some areas, with NH3 emission rates depending on floor material and manure collection frequency.
Article
Engineering, Environmental
Alon Rabinovich, Joseph R. Heckman, Beni Lew, Ashaki A. Rouff
Summary: The study investigated the recovery of phosphate as struvite from dairy lagoon wastewater, demonstrating that increasing magnesium concentration can reduce thermal losses of NH4-N and decrease the sorption of micronutrients in the recovered solids. This suggests that lower magnesium concentrations during phosphate recovery can be beneficial for increasing micronutrient content and reducing NH4-N thermal losses in the produced struvite fertilizer.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Rahul Singh, Kyunghoon Kim, Gyutae Park, Seokwon Kang, Taehyun Park, Jihee Ban, Siyoung Choi, Jeongin Song, Dong-Gil Yu, Jung-Hun Woo, Yuri Choi, Taehyoung Lee
Summary: This study aimed to establish fluctuations in concentration over one year by analyzing seasonal and regional variation in ammonia concentration. Livestock and agricultural areas recorded the highest concentration of ammonia among all sites, with the highest concentration recorded in autumn. However, at most of the other studied sites, the highest and lowest ammonia concentrations were recorded during summer and winter, respectively.
Article
Agriculture, Multidisciplinary
Provvidenza Rita D'Urso, Claudia Arcidiacono, Francesca Valenti, David Janke, Giovanni Cascone
Summary: The infrared photoacoustic spectroscopy was used to measure ammonia concentrations in a semi-open dairy barn. The number of repetitions significantly affected the variability of measurements. It is recommended to perform three to four repetitions, exclude the first one, and consider the mean value of the second and third repetitions as the NH3 concentration value for each sampling location.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2023)
Article
Ecology
Federico A. Vignale, Daissy Bernal Rey, Agustin M. Pardo, Facundo J. Almasque, Jose G. Ibarra, Dario Fernandez Do Porto, Adrian G. Turjanski, Nancy Lopez, Renata J. Menendez Helman, Laura J. Raiger Iustman
Summary: Environmental changes and human activities can affect the structure and diversity of aquatic microbial communities. This study analyzed the dynamics of bacterial communities in an urban stream in Buenos Aires, Argentina and found that the composition of these communities was influenced by seasonality and regional differences. Comparative analysis with global rivers identified several genera as potential bioindicators of anthropogenic disturbance.
Article
Engineering, Environmental
Yongzhi Li, Jing Liu, Christian George, Hartmut Herrmann, Mengna Gu, Muhan Yang, Yanjun Wang, Abdelwahid Mellouki, Yuepeng Pan, Joseph David Felix, Hiroto Kawashima, Zhongyi Zhang, Shuguang Wang, Yang Zeng
Summary: Mitigating ammonia emissions is a significant challenge, and accurately identifying the sources of ammonia pollution is crucial for guiding pollution reduction policies.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Christopher A. Beale, Fabien Paulot, Cynthia A. Randles, Rui Wang, Xuehui Guo, Lieven Clarisse, Martin Van Damme, Pierre-Francois Coheur, Cathy Clerbaux, Mark W. Shephard, Enrico Dammers, Karen Cady-Pereira, Mark A. Zondlo
Summary: This study presents the spatiotemporal distribution of ammonia (NH3) over the Indian subcontinent using satellite instruments. Five regions with distinct NH3 profiles were identified, and the impact of local farming practices on NH3 emissions was found to be underestimated in emission inventories. The high-resolution maps obtained can be used to improve NH3 emission inventories for more accurate air quality predictions in the region.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Engineering, Chemical
Randy L. Maglinao, Eleazer P. Resurrection, Sandeep Kumar, Amado L. Maglinao, Sergio Capareda, Bryan R. Moser
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2019)
Article
Green & Sustainable Science & Technology
Alexander L. Ido, Mark Daniel G. de Luna, Dennis C. Ong, Sergio C. Capareda
JOURNAL OF CLEANER PRODUCTION
(2019)
Article
Engineering, Environmental
El Jirie N. Baticados, Sergio C. Capareda, Amado L. Maglinao
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
(2019)
Article
Energy & Fuels
Muhammad U. Hanif, Mohammed Zwawi, Sergio C. Capareda, Hamid Iqbal, Mohammed Algarni, Bassem E. Felemban, Ali Bahadar, Adeel Waqas
Article
Environmental Sciences
Atilla Mutlu
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2020)
Article
Chemistry, Multidisciplinary
Qurat-ul-Ain, Muhammad Shafiq, Sergio C. Capareda, Firdaus-e-Bareen
Summary: The research focused on pyrolysis of Parthenium hysterophorus at different temperatures and found that temperature significantly influenced the yield and properties of pyrolysis products, with biochar stability increasing at higher temperatures. Additionally, chemical composition was richer at lower pyrolysis temperatures. Gas Chromatography-Mass Spectrometry analysis showed the presence of various compounds in biochar and bio-oil, with different trends observed with increasing temperature.
JOURNAL OF SAUDI CHEMICAL SOCIETY
(2021)
Article
Energy & Fuels
Nanjappa Ashwath, Hyungseok Nam, Sergio Capareda
Summary: This study optimized pyrolysis conditions for maximum energy recovery from Beauty Leaf Tree oil seed press cake. Controlled pyrolysis produced different proportions of biochar, bio-oil, and syngas coproducts, with biochar having the highest mass yield and energy content. Energy from biochar was optimized at a pyrolysis temperature of 425 degrees C and 75 min of exposure time, indicating that almost all energy from the feedstock can be recovered via pyrolysis.
Article
Environmental Sciences
Atilla Mutlu, O. Mert Bayraktar
Summary: This study investigates the effects of coal-based residential heating on CO and SO2 air quality in a city in Turkey. The research found that the emissions from this heating method contribute to high levels of air pollutants, negatively impacting the environment.
AIR QUALITY ATMOSPHERE AND HEALTH
(2021)
Article
Energy & Fuels
Muhammad Usman Hanif, Mohammed Zwawi, Mohammed Algarni, Ali Bahadar, Hamid Iqbal, Sergio C. Capareda, Muhammad Adnan Hanif, Adeel Waqas, Nazia Hossain, Muhammad Tahir Hussain Siddiqui, Sabzoi Nizamuddin, Asma Jamil
Summary: This study assessed the potential of biogenic methane production from the co-digestion of pretreated cotton gin trash, cow manure, and sludge. The results showed that the HW+US-pretreated CGT had the highest biogas production capacity and quality, impacting the circular economy significantly.
Article
Green & Sustainable Science & Technology
Qurat Ul Ain, Aisha Nazir, Sergio C. Capareda, Muhammad Shafiq, Firdaus-e-Bareen
Summary: The study found that converting cotton gin trash into biochar, compost, and co-compost can improve soil properties and have positive effects on plant growth. The application of co-composted biochar at 10 t ha(-1) showed significant benefits for plant growth, while lower rates of 2.5 t ha(-1) and 5 t ha(-1) also contributed to plant growth.
Article
Biochemistry & Molecular Biology
Isha Shakoor, Aisha Nazir, Sonal Chaudhry, Qurat-ul-Ain, Firdaus-E-Bareen, Sergio C. Capareda
Summary: The study assessed the feasibility of using indigenous Arthrospira platensis for nickel remediation, showing promising results in removing nickel pollutants from cooking oil industry wastewater.
Article
Environmental Sciences
Mohammad Ruzlan Habib, El Jirie N. Baticados, Sergio C. Capareda
Summary: Regular updates of emission factors are needed for particulate matter (PM) emissions from dairies and feedlots. Additionally, the development of simple measurement techniques to accurately measure pollution concentration is necessary to mitigate the impact of air pollution and take appropriate actions.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Agricultural Engineering
Tamiris Pacheco da Costa, Fionnuala Murphy, Rocio Roldan, Maneesh Kumar Mediboyina, Wenhao Chen, Joseph Sweeney, Sergio Capareda, Nicholas M. Holden
Summary: The valorisation of forestry residues as renewable resources for energy and bioproduct production is gaining interest, but a holistic technical and environmental analysis is lacking. This study evaluated bio-oil, synthesis gas, and biochar production from spruce, pine, and larch residues under different pyrolysis conditions. The results showed that larch bio-oil production at 300°C had superior performance. The study also highlighted the energy-intensive nature of the pyrolysis process, but suggested that on-site syngas energy and biochar could offset energy requirements.
BIOMASS & BIOENERGY
(2023)
Article
Energy & Fuels
El Jirie N. Baticados, Sergio C. Capareda, Cole I. Mitchell
Summary: The resistance of solid-separated solid wastes (SSDWs) to moderate airflow was measured at different bed depths and moisture levels. The pressure drop across a loose-fill fixed bed column increased more rapidly with increasing airflow rates and less rapidly with increasing bed depths. A higher moisture content resulted in a decrease in the pressure drop. A nonlinear model accurately described the airflow resistance data of SSDWs at different moisture contents. Empirical curves were developed to aid in the design of ventilation systems for drying and storage.
Article
Engineering, Environmental
Julius Choi, Hyungseok Nam, Sergio C. Capareda
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2019)