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Waste water nitrogen

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https://www.readbyqxmd.com/read/28579143/energy-from-poultry-waste-an-aspen-plus-based-approach-to-the-thermo-chemical-processes
#1
Gianluca Cavalaglio, Valentina Coccia, Franco Cotana, Mattia Gelosia, Andrea Nicolini, Alessandro Petrozzi
A particular approach to the task of energy conversion of a residual waste material was properly experienced during the implementation of the national funded Enerpoll project. This project is a case study developed in the estate of a poultry farm that is located in a rural area of central Italy (Umbria Region); such a farm was chosen for the research project since it is almost representative of many similar small-sized breeding realties of the Italian regional context. The purpose of the case study was the disposal of a waste material (i...
May 31, 2017: Waste Management
https://www.readbyqxmd.com/read/28578866/nitrogen-losses-to-the-environment-following-food-based-digestate-and-compost-applications-to-agricultural-land
#2
Fiona Nicholson, Anne Bhogal, Laura Cardenas, Dave Chadwick, Tom Misselbrook, Alison Rollett, Matt Taylor, Rachel Thorman, John Williams
The anaerobic digestion of food waste for energy recovery produces a nutrient-rich digestate which is a valuable source of crop available nitrogen (N). As with any 'new' material being recycled to agricultural land it is important to develop best management practices that maximise crop available N supply, whilst minimising emissions to the environment. In this study, ammonia (NH3) and nitrous oxide (N2O) emissions to air and nitrate (NO3(-)) leaching losses to water following digestate, compost and livestock manure applications to agricultural land were measured at 3 sites in England and Wales...
June 1, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28577026/low-temperature-autotrophic-microbial-denitrification-using-thiosulfate-or-thiocyanate-as-electron-donor
#3
Elias Broman, Abbtesaim Jawad, Xiaofen Wu, Stephan Christel, Gaofeng Ni, Margarita Lopez-Fernandez, Jan-Eric Sundkvist, Mark Dopson
Wastewaters generated during mining and processing of metal sulfide ores are often acidic (pH < 3) and can contain significant concentrations of nitrate, nitrite, and ammonium from nitrogen based explosives. In addition, wastewaters from sulfide ore treatment plants and tailings ponds typically contain large amounts of inorganic sulfur compounds, such as thiosulfate and tetrathionate. Release of these wastewaters can lead to environmental acidification as well as an increase in nutrients (eutrophication) and compounds that are potentially toxic to humans and animals...
June 2, 2017: Biodegradation
https://www.readbyqxmd.com/read/28572708/bioremediation-efficacy-comparison-of-nutrient-removal-from-an-anaerobic-digest-waste-based-medium-by-an-algal-consortium-before-and-after-cryopreservation
#4
Alla Silkina, Graham D Nelson, Catherine E Bayliss, Craig L Pooley, John G Day
An algal consortium was isolated from an integrated steelmaking site at TATA Steel Strip Products Ltd. in Port Talbot, UK, and its bioremediation capacity tested. Excellent "bioremediation" was observed when the mixed culture was "applied" to diluted effluent from an enhanced anaerobic digestion plant at Dŵr Cymru Welsh Water at Port Talbot, UK. After 5 days of cultivation in a 600-L photobioreactor, 99% of the total nitrogen (initial level, 4500 μmol L(-1)) and total phosphorus (initial level, 690.4 μmol L(-1)) were removed from the waste stream...
2017: Journal of Applied Phycology
https://www.readbyqxmd.com/read/28550791/environmental-indicators-of-the-combustion-of-prospective-coal-water-slurry-containing-petrochemicals
#5
Margarita A Dmitrienko, Galina S Nyashina, Pavel A Strizhak
Negative environmental impact of coal combustion has been known to humankind for a fairly long time. Sulfur and nitrogen oxides are considered the most dangerous anthropogenic emissions. A possible solution to this problem is replacing coal dust combustion with that of coal water slurry containing petrochemicals (CWSP). Coal processing wastes and used combustible liquids (oils, sludge, resins) are promising in terms of their economic and energy yield characteristics. However, no research has yet been conducted on the environmental indicators of fuels based on CWSP...
May 18, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28550636/the-role-of-algae-in-agriculture-a-mathematical-study
#6
P K Tiwari, A K Misra, Ezio Venturino
Synthetic fertilizers and livestock manure are nowadays widely used in agriculture to improve crop yield but nitrogen and phosphorous runoff resulting from their use compromises water quality and contributes to eutrophication phenomena in waterbeds within the countryside and ultimately in the ocean. Alternatively, algae could play an important role in agriculture where they can be used as biofertilizers and soil stabilizers. To examine the possible reuse of the detritus generated by dead algae as fertilizer for crops, we develop three mathematical models building upon each other...
June 2017: Journal of Biological Physics
https://www.readbyqxmd.com/read/28547371/improvement-of-aquaponic-performance-through-micro-and-macro-nutrient-addition
#7
Dongyun Ru, Jikai Liu, Zhen Hu, Yina Zou, Liping Jiang, Xiaodian Cheng, Zhenting Lv
Aquaponics is one of the "zero waste" industry in the twenty-first century, and is considered to be one of the major trends for the future development of agriculture. However, the low nitrogen utilization efficiency (NUE) restricted its widely application. To date, many attempts have been conducted to improve its NUE. In the present study, effect of micro- and macro-nutrient addition on performance of tilapia-pak choi aquaponics was investigated. Results showed that the addition of micro- and macro-nutrients improved the growth of plant directly and facilitated fish physiology indirectly, which subsequently increased NUE of aquaponics from 40...
May 25, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28543305/effects-of-nitrogenous-wastes-on-survival-of-the-barton-springs-salamander-eurycea-sosorum
#8
Justin C Crow, Kenneth G Ostrand, Michael R J Forstner, Matthew Catalano, Joseph R Tomasso
The objective of our study was to determine the acute toxicity of 3 common aquatic nitrogenous toxicants to the federally endangered Barton Springs salamander (Eurycea sosorum). Based on our findings, the 96-hour median-lethal concentration (96-h LC50) for un-ionized ammonia-N, nitrite-N, and nitrate-N to E. sosorum are 2.0 ± 0.32 mg/L, 31.7 ± 4.02 mg/L, and 968.5 ± 150.6 mg/L, respectively. These results establish a benchmark for the tolerance of plethodontid salamanders to these toxicants and indicate that current water quality criteria are adequate for their protection...
May 23, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28514712/nitrogen-doped-carbon-dots-derived-from-sargassum-fluitans-as-fluorophore-for-dna-detection
#9
S Godavarthi, K Mohan Kumar, E Vázquez Vélez, A Hernandez-Eligio, M Mahendhiran, N Hernandez-Como, M Aleman, L Martinez Gomez
This work focused on the use of waste seaweed Sargassum fluitans (S. fluitans) as carbon source precursor to prepare nitrogen doped carbon dots (NCDs) by hydrothermal method. High resolution transmission electron microscopic (HR-TEM) studies revealed that the synthesized water soluble NCDs are in the size range of 2-8nm and exhibits excellent fluorescent properties with a quantum yield of 18.2%. Elemental nitrogen in NCDs was evidenced by X-ray photoelectron spectroscopy (XPS) and Fourier transformed infrared spectrum (FT-IR)...
May 10, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28500550/reclamation-of-heavy-metals-from-contaminated-soil-using-organic-acid-liquid-generated-from-food-waste-removal-of-cd-cu-and-zn-and-soil-fertility-improvement
#10
Shijin Dai, Yang Li, Tao Zhou, Youcai Zhao
Food waste fermentation generates complicated organic and acidic liquids with low pH. In this work, it was found that an organic acid liquid with pH 3.28 and volatile low-molecular-weight organic acid (VLMWOA) content of 5.2 g/L could be produced from food wastes after 9-day fermentation. When the liquid-to-solid ratio was 50:1, temperature was 40 °C, and contact time was 0.5-1 day, 92.9, 78.8, and 52.2% of the Cd, Cu, and Zn in the contaminated soil could be washed out using the fermented food waste liquid, respectively...
May 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28493156/mini-review-high-rate-algal-ponds-flexible-systems-for-sustainable-wastewater-treatment
#11
REVIEW
P Young, M Taylor, H J Fallowfield
Over the last 20 years, there has been a growing requirement by governments around the world for organisations to adopt more sustainable practices. Wastewater treatment is no exception, with many currently used systems requiring large capital investment, land area and power consumption. High rate algal ponds offer a sustainable, efficient and lower cost option to the systems currently in use. They are shallow, mixed lagoon based systems, which aim to maximise wastewater treatment by creating optimal conditions for algal growth and oxygen production-the key processes which remove nitrogen and organic waste in HRAP systems...
June 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28492328/inhibition-of-radiolytic-molecular-hydrogen-formation-by-quenching-of-excited-state-water
#12
Gregory P Horne, Simon M Pimblott, Jay A LaVerne
Comparison of experimental measurements of the yield of molecular hydrogen produced in the gamma radiolysis of water and aqueous nitrate solutions with predictions of a Monte Carlo track chemistry model shows that the nitrate anion scavenging of the hydrated electron, its precursor, and hydrogen atom cannot account for the observed decrease in the yield at high nitrate anion concentrations. Inclusion of the quenching of excited states of water (formed by either direct excitation or reaction of the water radical cation with the precursor to the hydrated electron) by the nitrate anion into the reaction scheme provides excellent agreement between the stochastic calculations and experiment demonstrating the existence of this short-lived species and its importance in water radiolysis...
May 23, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28448168/management-of-textile-wastewater-for-improving-growth-and-yield-of-field-mustard-brassica-campestris-l
#13
Muhammad Yaseen, Muhammad Zahir Aziz, Aqleema Komal, Muhammad Naveed
Disposal of industrial wastewater is a current issue of urbanization. However, this problem can be sorted by using wastewater as alternate source of irrigation after the addition of some amendment. In this way, the problem of disposal of wastewater not only will be resolved but also scarcity of irrigation water can be kept off in future. Current research study was performed to evaluate the influence of different concentration of wastewater along with canal water for enhancing growth and yield of field mustard...
April 27, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28436604/solvent-free-mechanochemical-synthesis-of-nitrogen-doped-nanoporous-carbon-for-electrochemical-energy-storage
#14
Christina Schneidermann, Nicolas Jäckel, Steffen Oswald, Lars Giebeler, Volker Presser, Lars Borchardt
Nitrogen-doped nanoporous carbons were synthesized by a solvent-free mechanochemically induced one-pot synthesis. This facile approach involves the mechanochemical treatment and carbonization of three solid materials: potassium carbonate, urea, and lignin, which is a waste product from pulp industry. The resulting nitrogen-doped porous carbons offer a very high specific surface area up to 3000 m(2)  g(-1) and large pore volume up to 2 cm(3)  g(-1) . The mechanochemical reaction and the impact of activation and functionalization are investigated by nitrogen and water physisorption and high-resolution X-ray photoelectron spectroscopy (XPS)...
April 24, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28433819/environmentally-and-economically-efficient-utilization-of-coal-processing-waste
#15
Margarita A Dmitrienko, Pavel A Strizhak
High concentrations of hazardous anthropogenic emissions (sulfur, nitrogen and carbon oxides) from solid fuel combustion in coal burning plants cause environmental problems that have been especially pressing over the last 20-30 years. A promising solution to these problems is a switch from conventional pulverized coal combustion to coal-water slurry fuel. In this paper, we pay special attention to the environmental indicators characterizing the combustion of different coal ranks (gas, flame, coking, low-caking, and nonbaking coals) and coal-water slurry fuels based on the coal processing waste - filter cakes...
November 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28432993/chemical-biological-and-dna-markers-for-tracing-slaughterhouse-effluent
#16
P J Harvey, M P Taylor, H K Handley, S Foster, M R Gillings, A J Asher
Agricultural practices, if not managed correctly, can have a negative impact on receiving environments via waste disposal and discharge. In this study, a chicken slaughter facility on the rural outskirts of Sydney, Australia, has been identified as a possible source of persistent effluent discharge into a peri-urban catchment. Questions surrounding the facility's environmental management practices go back more than four decades. Despite there having never been a definitive determination of the facility's impact on local stream water quality, the New South Wales Environment Protection Authority (NSW EPA) has implemented numerous pollution reduction requirements to manage noise and water pollution at the slaughter facility...
July 2017: Environmental Research
https://www.readbyqxmd.com/read/28412853/nitrogen-behaviour-during-thermal-drying-of-mechanically-dewatered-biosludge-from-pulp-and-paper-industry
#17
Kati Mustonen, Ivan Deviatkin, Jouni Havukainen, Mika Horttanainen
An ongoing call to implement a circular economy is underway in the European Union, and a specific attention has been placed on the forest industry, which seeks additional recycling routes for its side streams, including biosludge. Biosludge is often dried and incinerated, thus wasting the nitrogen contained therein. This paper describes a study in which the release of nitrogen during thermal drying; the impact of the drying temperatures of 130, 180, and 210°C on the mass of ammonia released; and the potential for recovery of nitrogen from biosludge were examined...
April 17, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28384348/de-novo-transcriptome-analysis-of-the-excretory-tubules-of-carausius-morosus-phasmatodea-and-possible-functions-of-the-midgut-appendices
#18
Matan Shelomi
The Malpighian tubules are the insect excretory organs, responsible for ion and water homeostasis and elimination of nitrogenous wastes. Post-genomic assays suggest they also metabolize and detoxify xenobiotic compounds and have antimicrobial properties. The Phasmatodea have an additional, unique set of excretory organs referred to predominantly as midgut appendices. Their function and how it compares to phasmid and other insect Malpighian tubules is unknown. Hypotheses include carbonic anhydrase activity, calcium and metal cation sequestration, and xenobiotic transport...
2017: PloS One
https://www.readbyqxmd.com/read/28373560/contrasting-nitrogen-and-phosphorus-budgets-in-urban-watersheds-and-implications-for-managing-urban-water-pollution
#19
Sarah E Hobbie, Jacques C Finlay, Benjamin D Janke, Daniel A Nidzgorski, Dylan B Millet, Lawrence A Baker
Managing excess nutrients remains a major obstacle to improving ecosystem service benefits of urban waters. To inform more ecologically based landscape nutrient management, we compared watershed inputs, outputs, and retention for nitrogen (N) and phosphorus (P) in seven subwatersheds of the Mississippi River in St. Paul, Minnesota. Lawn fertilizer and pet waste dominated N and P inputs, respectively, underscoring the importance of household actions in influencing urban watershed nutrient budgets. Watersheds retained only 22% of net P inputs versus 80% of net N inputs (watershed area-weighted averages, where net inputs equal inputs minus biomass removal) despite relatively low P inputs...
April 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28364206/the-problem-of-dephosphorization-using-waste-recycling
#20
Elena Smirnova, Mikhail Alexeev
The article considers optimizing methods for wastewater treatment systems. Nutrients (nitrogen and phosphorus) are discharged from the river basin of the northwest Russia. Disruption of ecological safety and healthy state of water basins takes place when excess amount of nitrogen and phosphorus is discharged from wastewater. This results in eutrophication that is increased growth of seaweeds and, therefore, in ecological system disruption. The cities of the northwest region are short of funds for renovation of water treatment systems...
May 2017: Environmental Science and Pollution Research International
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