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https://www.readbyqxmd.com/read/29758894/environmental-and-economic-analysis-of-power-generation-in-a-thermophilic-biogas-plant
#1
D Ruiz, G San Miguel, B Corona, A Gaitero, A Domínguez
This paper investigates the environmental and economic performance of the power production from biogas using Life Cycle Assessment, Life Cycle Costing and Cost Benefit Analysis methodologies. The analysis is based on a commercial thermophilic biogas plant located in Spain where is installed a Combined Heat and Power system that produces electricity that is sold to the grid. Power generation has been assumed as the only function of the biogas system, expanding the system boundaries to include the additional function related to the end-of-life management of the biowastes...
August 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29756182/controlling-risks-of-p-water-pollution-by-sorption-on-soils-pyritic-material-granitic-material-and-different-by-products-effects-of-ph-and-incubation-time
#2
Aurora Romar-Gasalla, Juan Carlos Nóvoa-Muñoz, Manuel Arias-Estévez, María J Fernández-Sanjurjo, Esperanza Álvarez-Rodríguez, Avelino Núñez-Delgado
Batch experiments were used to test P sorbent potential of soil samples, pyritic and granitic materials, mussel shell, mussel shell ash, sawdust, and slate waste fines for different pH and incubation times. Maximum P sorption varied in a wide range of pH: < 4 for pyritic material, 4-6 for forest soil, > 5 for slate fines, > 6 for shell ash, and pH 6-8 for mussel shell. P sorption was rapid (< 24 h) for forest soil, shell ash, pyritic material, and fine shell. On the opposite side, it was clearly slower for vineyard soil, granitic material, slate fines, pine sawdust, and coarse shell, with increased P sorption even 1 month later...
May 13, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29753522/silver-functionalized-silica-aerogels-and-their-application-in-the-removal-of-iodine-from-aqueous-environments
#3
R Matthew Asmussen, Josef Matyáš, Nikolla P Qafoku, Albert A Kruger
One of the key challenges for radioactive waste management is the efficient capture and immobilization of radioiodine, because of its radiotoxicity, high mobility in the environment, and long half-life (t1/2  = 1.57 × 107 years). Silver-functionalized silica aerogel (AgAero) represents a strong candidate for safe sequestration of radioiodine from various nuclear waste streams and subsurface environments. Batch sorption experiments up to 10 days long were carried out in oxic and anoxic conditions in both deionized water (DIW) and various Hanford Site Waste Treatment Plant (WTP) off-gas condensate simulants containing from 5 to 10 ppm of iodide (I- ) or iodate (IO3 - )...
May 1, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29751449/industrial-pollution-load-assessment-in-phnom-penh-cambodia-using-an-industrial-pollution-projection-system
#4
Vibol San, Vin Spoann, Johannes Schmidt
Approximately 56% out of the total 1302 Cambodian firms are operated in the Capital city of Cambodia. The necessary information on industrial pollution to set strategies, priorities and action plans on environmental protection issues is absent in Cambodia. In the absence of this data, effective environmental protection cannot be implemented. The objective of this study is to estimate industrial pollution load by employing the Industrial Pollution Projection System, a rapid environmental management tool for assessment of pollution load, to produce a scientific rational basis for preparing future policy direction to reduce industrial pollution in Phnom Penh city...
February 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29730591/equilibrium-approach-towards-water-resource-management-and-pollution-control-in-coal-chemical-industrial-park
#5
Jiuping Xu, Shuhua Hou, Heping Xie, Chengwei Lv, Liming Yao
In this study, an integrated water and waste load allocation model is proposed to assist decision makers in better understanding the trade-offs between economic growth, resource utilization, and environmental protection of coal chemical industries which characteristically have high water consumption and pollution. In the decision framework, decision makers in a same park, each of whom have different goals and preferences, work together to seek a collective benefit. Similar to a Stackelberg-Nash game, the proposed approach illuminates the decision making interrelationships and involves in the conflict coordination between the park authority and the individual coal chemical company stockholders...
May 3, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29729998/pathogens-transmitted-in-animal-feces-in-low-and-middle-income-countries
#6
REVIEW
Miranda J Delahoy, Breanna Wodnik, Lydia McAliley, Gauthami Penakalapati, Jenna Swarthout, Matthew C Freeman, Karen Levy
Animals found in close proximity to humans in low-and middle-income countries (LMICs) harbor many pathogens capable of infecting humans, transmissible via their feces. Contact with animal feces poses a currently unquantified-though likely substantial-risk to human health. In LMIC settings, human exposure to animal feces may explain some of the limited success of recent water, sanitation, and hygiene interventions that have focused on limiting exposure to human excreta, with less attention to containing animal feces...
March 15, 2018: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/29726243/-influences-of-municipal-sludge-applied-in-slope-vegetation-restoration-on-surface-water-environment
#7
Chen Guang Zhen, Ping Sheng Leng, Li Juan Liu, De Quan Dou, Zeng Hui Hu
The application of municipal sludge in ecological restoration has a good prospect for avoiding the food chain of grain crops, but its influences on surface water environmental are unclear. The municipal sludge and construction waste were mixed with 1:1 (V/V) as growth media, which were covered over simulation coal gangue slopes. Eight native woody species were sowed in the mixed media. The plant growth and coverage, as well as conductivity, pH, the concentrations of nitrogen (N), phosphorus (P), potassium (K), heavy metal and polycyclic aromatic hydrocarbon (PAHs) of surface and underground runoff of the slopes in the growing season were investigated...
April 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29722685/relationship-between-total-dissolved-solids-and-electrical-conductivity-in-marcellus-hydraulic-fracturing-fluids
#8
Malcolm Taylor, Herschel A Elliott, Laura O Navitsky
The production of hydraulic fracturing fluids (HFFs) in natural gas extraction and their subsequent management results in waste streams highly variable in total dissolved solids (TDS). Because TDS measurement is time-consuming, it is often estimated from electrical conductivity (EC) assuming dissolved solids are predominantly ionic species of low enough concentration to yield a linear TDS-EC relationship: TDS (mg/L) = ke × EC (μS/cm) where ke is a constant of proportionality. HHFs can have TDS levels from 20,000 to over 300,000 mg/L wherein ion-pair formation and non-ionized solutes invalidate a simple TDS-EC relationship...
May 2018: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29719000/mineral-licks-as-environmental-reservoirs-of-chronic-wasting-disease-prions
#9
Ian H Plummer, Chad J Johnson, Alexandra R Chesney, Joel A Pedersen, Michael D Samuel
Chronic wasting disease (CWD) is a fatal neurodegenerative disease of deer, elk, moose, and reindeer (cervids) caused by misfolded prion proteins. The disease has been reported across North America and recently discovered in northern Europe. Transmission of CWD in wild cervid populations can occur through environmental routes, but limited ability to detect prions in environmental samples has prevented the identification of potential transmission "hot spots". We establish widespread CWD prion contamination of mineral licks used by free-ranging cervids in an enzootic area in Wisconsin, USA...
2018: PloS One
https://www.readbyqxmd.com/read/29717330/use-of-ultraviolet-visible-spectrophotometry-associated-with-artificial-neural-networks-as-an-alternative-for-determining-the-water-quality-index
#10
Edson Marcelino Alves, Ramon Juliano Rodrigues, Caroline Dos Santos Corrêa, Tiago Fidemann, José Celso Rocha, José Leonel Lemos Buzzo, Pedro de Oliva Neto, Eutimio Gustavo Fernández Núñez
The water quality index (WQI) is an important tool for water resource management and planning. However, it has major disadvantages: the generation of chemical waste, is costly, and time-consuming. In order to overcome these drawbacks, we propose to simplify this index determination by replacing traditional analytical methods with ultraviolet-visible (UV-Vis) spectrophotometry associated with artificial neural network (ANN). A total of 100 water samples were collected from two rivers located in Assis, SP, Brazil and calculated the WQI by the conventional method...
May 2, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29710669/reducing-marine-eutrophication-may-require-a-paradigmatic-change
#11
X Desmit, V Thieu, G Billen, F Campuzano, V Dulière, J Garnier, L Lassaletta, A Ménesguen, R Neves, L Pinto, M Silvestre, J L Sobrinho, G Lacroix
Marine eutrophication in the North-East Atlantic (NEA) strongly relies on nutrient enrichment at the river outlets, which is linked to human activities and land use in the watersheds. The question is whether human society can reduce its nutrient emissions by changing land use without compromising food security. A new version of Riverstrahler model (pyNuts-Riverstrahler) was designed to estimate the point and diffuse nutrient emissions (N, P, Si) to the rivers depending on land use in the watersheds across a large domain (Western Europe agro-food systems, waste water treatment)...
April 25, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29710650/characterizing-variable-biogeochemical-changes-during-the-treatment-of-produced-oilfield-waste
#12
Zacariah L Hildenbrand, Inês C Santos, Tiffany Liden, Doug D Carlton, Emmanuel Varona-Torres, Misty S Martin, Michelle L Reyes, Safwan R Mulla, Kevin A Schug
At the forefront of the discussions about climate change and energy independence has been the process of hydraulic fracturing, which utilizes large amounts of water, proppants, and chemical additives to stimulate sequestered hydrocarbons from impermeable subsurface strata. This process also produces large amounts of heterogeneous flowback and formation waters, the subsurface disposal of which has most recently been linked to the induction of anthropogenic earthquakes. As such, the management of these waste streams has provided a newfound impetus to explore recycling alternatives to reduce the reliance on subsurface disposal and fresh water resources...
April 16, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29701670/biomethanation-of-harmful-macroalgal-biomass-in-leach-bed-reactor-coupled-to-anaerobic-filter-effect-of-water-regime-and-filter-media
#13
Heejung Jung, Jaai Kim, Changsoo Lee
Ulva is a marine macroalgal genus which causes serious green tides in coastal areas worldwide. This study investigated anaerobic digestion as a way to manage Ulva waste in a leach-bed reactor coupled to an anaerobic filter (LBR-AF). Two LBR-AF systems with different filter media, blast furnace slag grains for R1, and polyvinyl chloride rings for R2, were run at increasing water replacement rates (WRRs). Both achieved efficient volatile solids reduction (68.4⁻87.1%) and methane yield (148⁻309 mL/g VS fed) at all WRRs, with the optimal WRR for maximum methane production being 100 mL/d...
April 26, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29699726/evaluation-of-maifanite-and-silage-as-amendments-for-green-waste-composting
#14
Lu Zhang, Xiangyang Sun
Composting is a popular method for recycling organic solid wastes including agricultural and forestry residues. However, traditional composting method is time consuming, generates foul smells, and produces an immature product. The effects of maifanite (MF; at 0%, 8.5%, and 13.5%) and/or silage (SG; at 0%, 25%, and 45%) as amendments on an innovative, two-stage method for composting green waste (GW) were investigated. The combined addition of MF and SG greatly improved composting conditions, reduced composting time, and enhanced compost quality in terms of composting temperature, bulk density, water-holding capacity, void ratio, pH, cation exchange capacity, ammonia nitrogen content, dissolved organic carbon content, crude fibre degradation, microbial numbers, enzyme activities, nutrient contents, and phytotoxicity...
April 23, 2018: Waste Management
https://www.readbyqxmd.com/read/29697511/establishing-radiological-screening-levels-for-defense-related-uranium-mine-drum-sites-on-blm-land-using-a-recreational-future-use-scenario
#15
Steven H Brown, Russel Edge, John Elmer, Michael McDonald
Thousands of former uranium mining sites in the United States, primarily in the southwestern states of Colorado, Arizona, New Mexico, Arizona, and Utah, are being identified and evaluated to assess their potential for causing public and environmental impacts. The common radiological contaminant of concern that characterizes these sites is naturally occurring uranium ore and associated wastes that may have been left behind postmining. The majority of these sites were abandoned and in general, are referred to as abandoned uranium mines, regardless of the government authority currently managing the land or in some cases, assigned responsibility for the oversight of assessment and remediation...
June 2018: Health Physics
https://www.readbyqxmd.com/read/29691403/bio-inspired-nano-traps-for-uranium-extraction-from-seawater-and-recovery-from-nuclear-waste
#16
Qi Sun, Briana Aguila, Jason Perman, Aleksandr S Ivanov, Vyacheslav S Bryantsev, Lyndsey D Earl, Carter W Abney, Lukasz Wojtas, Shengqian Ma
Nature can efficiently recognize specific ions by exerting second-sphere interactions onto well-folded protein scaffolds. However, a considerable challenge remains to artificially manipulate such affinity, while being cost-effective in managing immense amounts of water samples. Here, we propose an effective approach to regulate uranyl capture performance by creating bio-inspired nano-traps, illustrated by constructing chelating moieties into porous frameworks, where the binding motif's coordinative interaction towards uranyl is enhanced by introducing an assistant group, reminiscent of biological systems...
April 24, 2018: Nature Communications
https://www.readbyqxmd.com/read/29687287/quantifying-the-connections-linkages-between-land-use-and-water-in-the-kathmandu-valley-nepal
#17
Jeffrey C Davids, Martine M Rutten, Ram Devi T Shah, Deep N Shah, Nischal Devkota, Petra Izeboud, Anusha Pandey, Nick van de Giesen
Land development without thoughtful water supply planning can lead to unsustainability. In practice, management of our lands and waters is often unintegrated. We present new land-use, ecological stream health, water quality, and streamflow data from nine perennial watersheds in the Kathmandu Valley, Nepal, in the 2016 monsoon (i.e., August and September) and 2017 pre-monsoon (i.e., April and May) periods. Our goal was to improve understanding of the longitudinal linkages between land-use and water. At a total of 38 locations, the Rapid Stream Assessment (RSA) protocol was used to characterize stream ecology, basic water quality parameters were collected with a handheld WTW multi-parameter meter, and stream flow was measured with a SonTek FlowTracker Acoustic Doppler Velocimeter...
April 23, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29687197/influence-of-fishing-activity-over-the-marine-debris-composition-close-to-coastal-jetty
#18
Eduardo G G Farias, Paulo R Preichardt, David V Dantas
Worldwide, the marine debris emissions have been provoking impacts in ecosystems, generating massive mortality of different species with commercial interest. In South America, we have a lack of studies to verify the marine debris composition in transitional environments such as adjacent regions of coastal jetties. These are hydraulic engineering constructions used to maintain the navigation channel access between the sea-estuarine interface and are also used by teleost fishes, crustaceans, and mollusks like artificial shelters (reefs), being excellent fishing grounds...
April 23, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29679825/technologies-for-the-management-of-msw-incineration-ashes-from-gas-cleaning-new-perspectives-on-recovery-of-secondary-raw-materials-and-circular-economy
#19
REVIEW
Margarida J Quina, Elza Bontempi, Anna Bogush, Stefan Schlumberger, Gisela Weibel, Roberto Braga, Valerio Funari, Jiri Hyks, Erik Rasmussen, Jakob Lederer
Environmental policies in the European Union focus on the prevention of hazardous waste and aim to mitigate its impact on human health and ecosystems. However, progress is promoting a shift in perspective from environmental impacts to resource recovery. Municipal solid waste incineration (MSWI) has been increasing in developed countries, thus the amount of air pollution control residues (APCr) and fly ashes (FA) have followed the same upward trend. APCr from MSWI is classified as hazardous waste in the List of Waste (LoW) and as an absolute entry (19 01 07*), but FA may be classified as a mirror entry (19 0 13*/19 01 14)...
April 17, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29675047/menstrual-hygiene-management-and-waste-disposal-practices-and-challenges-faced-by-girls-women-of-developing-countries
#20
REVIEW
Rajanbir Kaur, Kanwaljit Kaur, Rajinder Kaur
Menstruation and menstrual practices still face many social, cultural, and religious restrictions which are a big barrier in the path of menstrual hygiene management. In many parts of the country especially in rural areas girls are not prepared and aware about menstruation so they face many difficulties and challenges at home, schools, and work places. While reviewing literature, we found that little, inaccurate, or incomplete knowledge about menstruation is a great hindrance in the path of personal and menstrual hygiene management...
2018: Journal of Environmental and Public Health
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