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Journal of Environmental Management

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https://www.readbyqxmd.com/read/28943060/co-pelletization-of-sewage-sludge-and-agricultural-wastes
#1
Ersel Yilmaz, Małgorzata Wzorek, Selin Akçay
This paper concerns the process of production and properties of pellets based on biomass wastes. Co-pelletization was performed for sewage sludge from municipal wastewater treatment plant and other biomass material such as animal and olive wastes. The aim of the present study was to identify the key factors affecting on the sewage sludge and agricultural residues co-pelletization processes conditions. The impact of raw material type, pellet length, moisture content and particle size on the physical properties was investigated...
September 21, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28943059/the-self-sustained-high-temperature-synthesis-shs-technology-as-novel-approach-in-the-management-of-asbestos-waste
#2
Laura Gaggero, Maurizio Ferretti
The SHS technique was experimented in chrysotile breakdown. By means of two reactions such as Mg3Si2O5(OH)4 + Fe2O3 + 3 Mg and 2Mg3Si2O5(OH)4 + Fe3O4 + 4 Mg the chrysotile was completely converted into forsterite-rich olivine. Different mixtures of hematite + Mg and magnetite + Mg were tested with chrysotile to establish the maximum chrysotile amount in order to allow the reaction. In comparison with conventional thermal treatments, the SHS process is characterized by a fast reaction, needs low activation energy and the apparatus is simple...
September 21, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28942192/emissions-of-volatile-organic-compounds-during-the-ship-loading-of-petroleum-products-dispersion-modelling-and-environmental-concerns
#3
Maria Francesca Milazzo, Giuseppa Ancione, Roberto Lisi
Emissions due to ship-loading of hydrocarbons are currently not addressed neither by the Directive on the integrated pollution prevention or by other environmental regulations. The scope of this study is to point towards the environmental and safety concerns associated with such emissions, even if proper attention has not been given to this issue until now. In order to achieve this goal, the modelling of the emission volatile organic compounds (VOC), due to ship-load operations at refineries has been made by means of the definition of a simulation procedure which includes a proper treatment of the hours of calm...
September 21, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28942191/improving-the-thermal-efficiency-of-a-jaggery-production-module-using-a-fire-tube-heat-exchanger
#4
Raul La Madrid, Elder Mendoza Orbegoso, Rafael Saavedra, Daniel Marcelo
Jaggery is a product obtained after heating and evaporation processes have been applied to sugar cane juice via the addition of thermal energy, followed by the crystallisation process through mechanical agitation. At present, jaggery production uses furnaces and pans that are designed empirically based on trial and error procedures, which results in low ranges of thermal efficiency operation. To rectify these deficiencies, this study proposes the use of fire-tube pans to increase heat transfer from the flue gases to the sugar cane juice...
September 21, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28942190/assessing-eco-efficiency-and-the-determinants-of-horticultural-family-farming-in-southeast-spain
#5
Ángeles Godoy-Durán, Emilio Galdeano-Gómez, Juan C Pérez-Mesa, Laura Piedra-Muñoz
Eco-efficiency is currently receiving ever increasing interest as an indicator of sustainability, as it links environmental and economic performances in productive activities. In agriculture these indicators and their determinants prove relevant due to the close ties in this activity between the use of often limited natural resources and the provision of basic goods for society. The present paper analyzes eco-efficiency at micro-level, focusing on small-scale family farms as the principal decision-making units (DMUs) of horticulture in southeast Spain, which represents over 30% of fresh vegetables produced in the country...
September 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28942189/anionically-reinforced-hydrogel-network-entrapped-fungal-cells-for-retention-of-cadmium-in-the-contaminated-aquatic-media
#6
Sema Çelik, Sibel Tunali Akar, Musa Şölener, Tamer Akar
A novel biomass/polymer composite was fabricated by embedding Thamnidium elegans cells in acrylic network of p(3-Methoxyprophyl)acrylamide p(MPA) enriched with 2-Akrylamido-2-methyl-1-propane sulfonic acid (AMPS). Cd(II) retention potential of hydrogel (p(MPA-co-AMPS)) increased by 20.66% times after this enrichment. The gel matrix could be effectively entrapped the biomass and resulting sorbent applied to remove Cd(II) from water in batch and continuous modes. The main physico-chemical parameters are discussed in addition to characterization, regeneration and application studies of the suggested sorbent...
September 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28942188/study-of-a-tropical-soil-in-order-to-use-it-to-retain-aluminum-iron-manganese-and-fluoride-from-acid-mine-drainage
#7
Miriam Gonçalves Miguel, Rodrigo Paiva Barreto, Sueli Yoshinaga Pereira
The Ore Treatment Unit (UTM-Caldas), in the city of Caldas, Minas Gerais, Brazil, nowadays in decommissioning stage, was the first uranium extraction mine in Brazil. Several negative environmental impacts in the area have occurred, because of mining, treatment and beneficiation processes. Waste rock pile 4 (WRP-4) generates acid mine drainage (AMD), which is discharged in the Nestor Figueiredo retention pond (NFP). However, leakage of acid water by the NFP dam foundation has been constantly observed. Therefore, this research aimed to investigate a typical tropical soil, in order to use it as mineral liner for the NFP to minimize the leakage of acid water through the dam foundation and to retain predominant chemical species...
September 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28941833/faecal-sludge-treatment-and-utilization-by-hydrothermal-carbonization
#8
Krailak Fakkaew, Thammarat Koottatep, Chongrak Polprasert
Hydrothermal carbonization (HTC) is a thermal conversion process that can be applied to convert faecal sludge into carbonaceous solids, called hydrochar. In this study, the technical feasibility of hydrochar production by HTC of faecal sludge was investigated. Experimental results showed energy contents of the produced hydrochar to be about 19-20 MJ/kg, comparable to natural coals and therefore usable as a solid fuel. The produced hydrochar contained a carbon content of approximately 40%wt, which could be processed further to make it suitable as an anode in batteries...
September 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28941832/toilet-revolution-in-china
#9
Shikun Cheng, Zifu Li, Sayed Mohammad Nazim Uddin, Heinz-Peter Mang, Xiaoqin Zhou, Jian Zhang, Lei Zheng, Lingling Zhang
The wide-spread prevalence of unimproved sanitation technologies has been a major cause of concern for the environment and public health, and China is no exception to this. Towards the sanitation issue, toilet revolution has become a buzzword in China recently. This paper elaborates the backgrounds, connotations, and actions of the toilet revolution in China. The toilet revolution aims to create sanitation infrastructure and public services that work for everyone and that turn waste into value. Opportunities for implementing the toilet revolution include: fulfilling Millennium Development Goals and new Sustainable Development Goals; government support at all levels for popularizing sanitary toilet; environmental protection to alleviate wastewater pollution; resource recovery from human waste and disease prevention for health and wellbeing improvement...
September 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28938196/sorption-of-uranium-vi-onto-hydrous-ferric-oxide-modified-zeolite-assessment-of-the-effect-of-ph-contact-time-temperature-selected-cations-and-anions-on-sorbent-interactions
#10
Pfano Mathews Nekhunguni, Nikita Tawanda Tavengwa, Hlanganani Tutu
Zeolites are commonly used as adsorbents for metal removal in most applications e.g. in wastewater. However, the ubiquity of iron in such systems may, in the long-term, distort the true interactions and mechanisms of contaminant removal as a result of modification of the zeolite surface. In this study, this potential phenomenon was assessed for the removal of uranium(VI) from aqueous solution by hydrous ferric oxide-modified zeolite (HFOMZ). This was prepared by precipitating iron hydroxide (the common precipitate of iron in aqueous systems) onto zeolite...
September 19, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28938195/understanding-public-perception-of-hydraulic-fracturing-a-case-study-in-spain
#11
D Costa, V Pereira, J Góis, A Danko, A Fiúza
Public acceptance is crucial for the implementation of energy technologies. Hydraulic fracturing is a technology widely used in the USA for natural gas production from shale formations, but currently finds strong public opposition worldwide, especially in Europe. Shale gas exploitation and exploration have the potential to significantly reduce import dependency in several countries, including Spain. To better understand public opinion on this issue, this article reports a survey targeting both the entire Spanish population and the inhabitants of the province of Burgos, the location where shale gas exploration permits have already been issued...
September 19, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28935398/understanding-complex-lnapl-sites-illustrated-handbook-of-lnapl-transport-and-fate-in-the-subsurface
#12
Derek W Tomlinson, Michael O Rivett, Gary P Wealthall, Rob E H Sweeney
The goal of the paper is to highlight the management of the complexities and risks for light non-aqueous phase liquid (LNAPL) sites, and how the Illustrated Handbook of LNAPL Transport and Fate in the Subsurface (CL:AIRE, London. ISBN 978-1-905046-24-9. http://www.claire.co.uk/LNAPL; "LNAPL illustrated handbook") is useful guidance and a tool for professionals to understand these complexities and risks. The LNAPL illustrated handbook provides a clear and concise best-practice guidance document, which is a valuable decision support tool for use in discussions and negotiations regarding LNAPL impacted sites with respect to the risks of LNAPL...
September 18, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28934677/evaluation-of-participatory-planning-lessons-from-hungarian-natura-2000-management-planning-processes
#13
Eszter Kovács, Eszter Kelemen, Gabriella Kiss, Ágnes Kalóczkai, Veronika Fabók, Barbara Mihók, Boldizsár Megyesi, György Pataki, Barbara Bodorkós, Bálint Balázs, Györgyi Bela, Katalin Margóczi, Ágnes Roboz, Dániel Molnár
Stakeholder participation in nature conservation policies and especially in the management of protected areas has gained importance in the last decades. These changes are underlined by democratic principles and the perceived contribution of stakeholder involvement to the effectiveness of conservation management. Evaluating participatory processes is essential to learn about the past and thus increase the quality of future processes. The evaluation can be useful for the organisations responsible for planning and management, stakeholders and policy makers as well...
September 18, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28934676/simultaneous-biofiltration-of-btex-and-hg%C3%A2-from-a-petrochemical-waste-stream
#14
Mostafa Leili, Sima Farjadfard, George A Sorial, Bahman Ramavandi
A biofiltration system was developed to treat benzene, toluene, ethylbenzene, and xylene (BTEX) and Hg° vapour from a petrochemical waste stream during overhaul maintenance. The biofilter compost bed was inoculated with a microbial consortium provided by a petrochemical wastewater treatment plant. The effect of the a BTEX concentration (192.6-973.8 g/m(3)h) and empty bed residence time (EBRT) of 20-100 s were studied under the conditions of steady state, transient, shock BTEX-loading, and off-restart. The findings revealed that during a biofilter start-up, an increase in the influent BTEX concentration to around 334...
September 18, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28934675/management-of-turbidity-current-venting-in-reservoirs-under-different-bed-slopes
#15
Sabine Chamoun, Giovanni De Cesare, Anton J Schleiss
The lifetime and efficiency of dams is endangered by the process of sedimentation. To ensure the sustainable use of reservoirs, many sediment management techniques exist, among which venting of turbidity currents. Nevertheless, a number of practical questions remain unanswered due to a lack of systematic investigations. The present research introduces venting and evaluates its performance using an experimental model. In the latter, turbidity currents travel on a smooth bed towards the dam and venting is applied through a rectangular bottom outlet...
September 18, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28934674/managing-for-climate-change-on-protected-areas-an-adaptive-management-decision-making-framework
#16
Sherri L Tanner-McAllister, Jonathan Rhodes, Marc Hockings
Current protected area management is becoming more challenging with advancing climate change and current park management techniques may not be adequate to adapt for effective management into the future. The framework presented here provides an adaptive management decision making process to assist protected area managers with adapting on-park management to climate change. The framework sets out a 4 step process. One, a good understanding of the park's context within climate change. Secondly, a thorough understanding of the park management systems including governance, planning and management systems...
September 18, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28934673/an-analysis-of-chemicals-and-other-constituents-found-in-produced-water-from-hydraulically-fractured-wells-in-california-and-the-challenges-for-wastewater-management
#17
Emily A Chittick, Tanja Srebotnjak
As high-volume hydraulic fracturing (HF) has grown substantially in the United States over the past decade, so has the volume of produced water (PW), i.e., briny water brought to the surface as a byproduct of oil and gas production. According to a recent study (Groundwater Protection Council, 2015), more than 21 billion barrels of PW were generated in 2012. In addition to being high in TDS, PW may contain hydrocarbons, PAH, alkylphenols, naturally occurring radioactive material (NORM), metals, and other organic and inorganic substances...
September 18, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28931461/detection-of-the-power-lines-in-uav-remote-sensed-images-using-spectral-spatial-methods
#18
Rishav Bhola, Nandigam Hari Krishna, K N Ramesh, J Senthilnath, Gautham Anand
In this paper, detection of the power lines on images acquired by Unmanned Aerial Vehicle (UAV) based remote sensing is carried out using spectral-spatial methods. Spectral clustering was performed using Kmeans and Expectation Maximization (EM) algorithm to classify the pixels into the power lines and non-power lines. The spectral clustering methods used in this study are parametric in nature, to automate the number of clusters Davies-Bouldin index (DBI) is used. The UAV remote sensed image is clustered into the number of clusters determined by DBI...
September 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28930694/identification-of-biphenyl-2-3-dioxygenase-and-its-catabolic-role-for-phenazine-degradation-in-sphingobium-yanoikuyae-b1
#19
Qiang Zhao, Muhammad Bilal, Shengjie Yue, Hongbo Hu, Wei Wang, Xuehong Zhang
Phenazines are important nitrogen-containing secondary metabolites that display a range of biological functionalities. However, these compounds have shown lethal effects on humans and, the fate of phenazine in the ecosystem remains uncertain. In this study, we investigated that Sphingobium yanoikuyae B1 could utilize phenazine as a sole carbon source for growth. Intermediate produced during phenazine degradation was purified and identified as 1, 2-dihydrogen 1, 2-dihydroxy phenazine. Biphenyl 2, 3-dioxygenase was determined to be the initial dioxygenase for phenazine degradation through gene cloning and whole cell transformation techniques...
September 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28930693/managing-military-training-related-environmental-disturbance
#20
Rick Zentelis, Sam Banks, J Dale Roberts, Stephen Dovers, David Lindenmayer
Military Training Areas (MTAs) cover at least 2 percent of the Earth's terrestrial surface and occur in all major biomes. These areas are potentially important for biodiversity conservation. The greatest challenge in managing MTAs is balancing the disturbance associated with military training and environmental values. These challenges are unique as no other land use is managed for these types of anthropogenic disturbances in a natural setting. We investigated how military training-related disturbance is best managed on MTAs...
September 17, 2017: Journal of Environmental Management
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