Article
Engineering, Chemical
Jiqin Wang, Shuyuan Chen, Xiangfei Zeng, Jinfeng Huang, Qian Liang, Jiancheng Shu, Mengjun Chen, Zhengxue Xiao, Hongbo Zhao, Zhi Sun
Summary: This study proposes an efficient ammonia-ammonium carbonate slurry electrolysis system for high purity copper recycling from waste printed circuit boards of mobile phones. By increasing factors such as reactant concentrations, solid-to-liquid ratio, current density and reaction time, the copper recovery rate and current efficiency could be significantly enhanced. Under the optimal test conditions, the copper current efficiency and recovery rate reached 95.2% and 90.4% respectively, with copper purity at 99.97% at the cathode. Compared with the acidic system, this approach provides a promising future for WEEE resource recycling.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Agronomy
Jose L. S. Pereira, Adelaide Perdigao, David Fangueiro
Summary: This research evaluates the potential of using a mixture of tomato waste and rice husk as a biofilter media to reduce losses of NH3 and greenhouse gases from pig slurry. The results show that the mixture has the ability to retain ammonia and greenhouse gases, making it a simple and low-cost solution for slurry hygienization.
Review
Environmental Sciences
Vincenzo Senatore, Tiziano Zarra, Mark Gino Galang, Giuseppina Oliva, Antonio Buonerba, Chi-Wang Li, Vincenzo Belgiorno, Vincenzo Naddeo
Summary: The operation of wastewater treatment plants often leads to the release of air pollutants causing odor issues, which require effective treatment technologies. This work reviews odor treatment technologies applied in full-scale WWTPs, with a focus on biofilters and biotrickling filters. Analysis of odors emitted by different units and evaluation of innovative sustainable technologies for full-scale applicability are also discussed.
Article
Construction & Building Technology
Phoebe Taptiklis, Robyn Phipps, Mark Jones, Jeroen Douwes
Summary: This study found positive and independent associations between house characteristics and mold and musty odor, with key factors being building envelope condition, ventilation, and insulation. Improving these factors can significantly reduce the risk of mold and musty odor in houses.
Article
Environmental Sciences
Richard H. Grant, Matthew T. Boehm
Summary: Episodic and seasonal hydrogen sulfide (H2S) emissions from midwestern U.S. dairy lagoons were studied. The daily emissions from manure stored in basins and live animals were determined, and a model using air temperature as a surrogate for slurry surface temperature was developed. The emissions were enhanced during slurry removal. Further measurements are needed to verify annual emissions estimates and derive emission factors for these storage systems.
JOURNAL OF ENVIRONMENTAL QUALITY
(2022)
Article
Engineering, Environmental
Zhangliang Han, Yiping Mao, Xiaobing Pang, Yubo Yan
Summary: This study presents a novel low-cost and efficient method to recycle waste plastics as NH3 adsorbents by regulating the structure and adsorption sites of ethylene glycol dime-thacrylate (EGDMA) polymers.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
I. M. Garder, B. Gomez-Munoz, L. Stoumann Jensen, I. Regueiro
Summary: Bioacidification of animal slurry has been found to reduce ammonia emissions, but the fertiliser value of bioacidified slurry needs further investigation. A pot experiment with maize plants was conducted to study the N fertiliser value of pig slurry treated with glucose and/or fermented brown juice. The results showed that bioacidified treatments had lower mineral fertiliser equivalence (MFE) value compared to non-bioacidified treatments, likely due to N immobilisation caused by the addition of easily available C. Further studies are needed to determine the optimal substrate inclusion rates and application methods, as well as field studies, before recommending bioacidification as an alternative to traditional acidification methods.
Article
Agronomy
Soon Uk Yoon, Sung Min Choi, Joon Hee Lee
Summary: This study developed a livestock odor monitoring system using ICT technology and an ammonia sensor. The system consists of multiple components and is divided into Livestock Odor Management System and Livestock Odor Control System.
Article
Engineering, Environmental
Yujie Wang, Wanqiang Yu, Xiao Li, Jiayuan Yu, Weijia Zhou
Summary: Nitrogenous pollutants have caused serious environmental pollution and pose threats to human life and the ecological environment. The electrochemical reduction of nitrogenous pollutants to ammonia using clean electric energy is considered an ideal technology for their recovery and utilization. Recent advancements in gas diffusion electrodes, catalyst surface enrichment, and tandem catalytic sites have helped overcome limitations such as low solubility, slow mass transfer, low partial current density, and hydrogen production competition. Furthermore, the combination of nitrogenous pollutant reactions with carbon dioxide reduction reactions has expanded their application scope. This review highlights research progress in nitrogenous pollutants reduction, presents challenges and possible future directions, and aims to provide suggestions for industrial application of electrochemical reduction of nitrogenous pollutants.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Agriculture, Dairy & Animal Science
Siyi Peng, Jiaming Zhu, Zuohua Liu, Bin Hu, Miao Wang, Shihua Pu
Summary: With the development of pig farming intensification, the air quality and odor emissions in pig houses have become a growing concern. Ammonia, as an important environmental indicator, can significantly affect the growth of pigs and pose health risks to farm workers. This study used machine learning and deep learning algorithms to predict ammonia concentration in pig houses. The results can serve as a reference for regulating air quality in these environments.
Article
Green & Sustainable Science & Technology
Insa Thiermann, Uwe Latacz-Lohmann
Summary: This article assesses farmers' willingness to participate in a scheme supporting the adoption of slurry acidification techniques. The majority of farmers value emission reductions, a higher cost share, and concessions on current fertiliser regulations. Preference heterogeneity is identified among farmers regarding the scheme's attributes.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Chemical
Long Ye, Haiqiang Gong, Bao Zhang, Xing Ou
Summary: Ammonia leaching is an important method for selective extraction of valuable metals in recycling lithium-ion batteries. In this study, an electrochemical reduction strategy using Fe/Fe2+ as negative electrodes was designed to accelerate the leaching process and successfully extract valuable materials.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Environmental
Marco Monti, Elena Perin, Eleonora Conterosito, Umberto Romagnolli, Bruno Muscato, Marco Girotto, Maria Teresa Scrivani, Valentina Gianotti
Summary: This study presents an innovative extrusion process for stripping organic contaminants from plastic fuel tanks of vehicles. The process successfully removes the contaminants, allowing the material to be effectively recycled for applications requiring enhanced performance. An in-depth analytic approach was used to identify the different processing conditions and organic contaminants present in the material. This research contributes to reducing the environmental impact of end-of-life vehicles.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Green & Sustainable Science & Technology
S. Connolly, V. O'Flaherty, D. J. Krol
Summary: Cattle slurry storage is a significant contributor to global methane and ammonia emissions. A study investigated the effectiveness of an oxygen-based amendment in reducing these emissions. Various peroxide sources were tested, and an amendment consisting of hydrogen peroxide and potassium iodide was found to successfully reduce methane emissions. While other peroxide sources reduced methane emissions, they also increased pH and subsequently ammonia emissions. The hydrogen peroxide and potassium iodide amendment achieved a 63% reduction in methane emissions and should be considered for larger scale implementation.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Agricultural Engineering
Hua Wang, Jijun Liu, Zhonghong Wu, Guangjun Feng, Zhongjian Shen, Meizhi Wang
Summary: In this study, the application of a pen-attached ventilation (PAV) airflow system in a nursery pig house was investigated to improve indoor air quality, reduce temperature stratification, and save energy.
BIOSYSTEMS ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Priyanka Kumari, Hong L. Choi, Sartika I. A. Sudiarto
Article
Green & Sustainable Science & Technology
Andi Febrisiantosa, Balasubramani Ravindran, Hong L. Choi
Article
Energy & Fuels
Hong L. Choi, Sartika I. A. Sudiarto, Anriansyah Renggaman
Article
Environmental Sciences
Sartika Indah Amalia Sudiarto, Anriansyah Renggaman, Hong Lim Choi
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2019)
Article
Energy & Fuels
Anriansyah Renggaman, Hong Lim Choi, Sartika Indah Amalia Sudiarto, Andi Febrisiantosa, Dong Hyoen Ahn, Yong Wook Choung, Arumuganainar Suresh
Summary: Codigestion of swine slaughter waste (SSW) with swine slurry (SS) can improve methane yield and digestion efficiency, with the potential to optimize resource utilization. The co-digestion process results in increased methane production and reduced digestion time, with a substrate-to-inoculum ratio of 0.5 proving to be more effective for improved digestion.
Article
Agronomy
Soon Uk Yoon, Sung Min Choi, Joon Hee Lee
Summary: This study developed a livestock odor monitoring system using ICT technology and an ammonia sensor. The system consists of multiple components and is divided into Livestock Odor Management System and Livestock Odor Control System.
Article
Food Science & Technology
Endy Triyannanto, Andi Febrisiantosa, Annisa Kusumaningrum, Aldicky Faizal Amri, Safna Fauziah, Eki Prilla Sulistyono, Bayu Murti Dewandaru, Asep Nurhikmat, Agus Susanto
Summary: The purpose of this research was to examine the effectiveness of pre-cooking treatments on the quality characteristics of ready-to-eat empal gentong. The results showed that pre-cooking treatments reduced the fat content of empal gentong's meat without affecting its color and water holding capacity. A longer pre-cooking time increased the pH and color values. Therefore, pre-cooking treatment can be used to reduce the fat content and improve the physical quality of empal gentong.
FOOD SCIENCE OF ANIMAL RESOURCES
(2022)
Article
Agriculture, Dairy & Animal Science
T. Wahyono, R. Wahyuningsih, A. I. Setiyawan, D. Pratiwi, T. Kurniawan, S. Hariyadi, M. M. Sholikin, A. Jayanegara, E. Triyannanto, A. Febrisiantosa
Summary: The objective of this study was to evaluate the effects of dietary selenium supplementation on carcass characteristics and meat quality in ruminants. The results showed that selenium supplementation increased hot carcass weight and rib eye area. Selenium addition also increased the weight of the fore shank and testicles, but decreased rib and lung weight. In terms of meat quality, selenium addition increased total selenium level, decreased the concentration of thiobarbituric acid reactive substances and cooking loss percentage.
JOURNAL OF ANIMAL AND FEED SCIENCES
(2023)
Article
Agriculture, Dairy & Animal Science
Agung Irawan, Ahmad Sofyan, Teguh Wahyono, Muhammad Ainsyar Harahap, Andi Febrisiantosa, Awistaros Angger Sakti, Hendra Herdian, Anuraga Jayanegara
Summary: In this meta-analysis, rumen-protected lysine (RPL) or lysine + methionine (RPLM) supplementation showed a positive linear relationship with lactational performance in dairy cows, with greater improvement observed during early lactation. Supplementing RPL or RPLM is recommended in deficient-AA diets but not in adequate-AA diets.
Article
Agricultural Engineering
A. Renggaman, H. L. Choi, A. Suresh
APPLIED ENGINEERING IN AGRICULTURE
(2015)
