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Waste water carbon

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https://www.readbyqxmd.com/read/28301612/anoxia-stimulates-microbially-catalyzed-metal-release-from-animas-river-sediments
#1
Casey M Saup, Kenneth H Williams, Lucía Rodríguez-Freire, José M Cerrato, Michael D Johnston, Michael J Wilkins
The Gold King Mine spill in August 2015 released 11 million liters of metal-rich mine waste to the Animas River watershed, an area that has been previously exposed to historical mining activity spanning more than a century. Although adsorption onto fluvial sediments was responsible for rapid immobilization of a significant fraction of the spill-associated metals, patterns of longer-term mobility are poorly constrained. Metals associated with river sediments collected downstream of the Gold King Mine in August 2015 exhibited distinct presence and abundance patterns linked to location and mineralogy...
March 16, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/28274177/high-quality-fuel-from-food-waste-investigation-of-a-stepwise-process-from-the-perspective-of-technology-development
#2
Ke Yin, Ling Li, Apostolos Giannis, Piyarat Weerachanchai, Bernard J H Ng, Jing-Yuan Wang
A stepwise process (SP) was developed for sustainable energy production from food waste (FW). The process comprised of hydrothermal treatment followed by oil upgrading. Synthetic food waste was primarily used as feedstock in the hydrothermal reactor under subcritical water conditions. The produced hydrochars were analyzed for calorific value (17.0-33.7 MJ/kg) and elemental composition indicating high-quality fuel comparable to coal. Hydrothermal carbonization (e.g. 180°C) would be efficient for oil recovery (>90%) from FW, as compared to hydrothermal liquefaction (320°C) whereby lipid degradation may take place...
March 8, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28273580/sorption-potential-of-different-biomass-fly-ashes-for-the-removal-of-diuron-and-3-4-dichloroaniline-from-water
#3
Mar Quirantes, Rogelio Nogales, Esperanza Romero
Hazardous contaminants in water and biomass fly ash spillage are causes for environmental and health concern. We selected five fly ashes generated from olive-mill (O,P, G and H) and greenhouse vegetable (I) waste used as biomass fuel in order to quantify their capacity to remove diuron and 3,4-dichloroaniline (DCA) from water. To understand the sorption processes involved, four kinetic models and two adsorption isotherms were assayed. The pseudo second-order kinetic showed the best fit (R(2)>0.99). The initial adsorption rate constant was found to be faster for DCA than for diuron...
February 27, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28260661/facile-and-scalable-synthesis-of-magnetite-carbon-adsorbents-by-recycling-discarded-fruit-peels-and-their-potential-usage-in-water-treatment
#4
Ji Ma, Shuangshuang Sun, Kezheng Chen
In this study, apple, banana and orange peels were used as precursor compounds for the mass production of magnetite/carbon adsorbents. A so-called "soak-calcination" procedure was employed by firstly soaking these waste fruit peels in FeCl3 aqueous solutions and secondly calcining these precursors in the nitrogen atmosphere to yield final magnetite/carbon composites. This approach is quite simple and effective to synthesize carbon-based adsorbents on an industrial scale. The as-produced adsorbents feature the merits of appropriate ferromagnetism (>4emug(-1)), high adsorption capacity (several hundreds of milligrams per gram for adsorption of methyl blue, Congo red, rhodamine B and Cr(6+) ions), and good regenerability (>85%)...
February 20, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28254660/australia-wide-assessment-of-perfluoroalkyl-substances-pfass-in-landfill-leachates
#5
C Gallen, D Drage, G Eaglesham, S Grant, M Bowman, J F Mueller
Leachate from 27 landfills was analysed for nine perfluoroalkyl substances (PFASs). Five PFASs were detected ubiquitously, with perfluorohexanoate (PFHxA) the predominant PFAS (mean 1700ng/L; range 73-25,000ng/L). Despite the complexity of landfill-specific factors, some general trends in PFAS concentrations were observed. Mean concentrations of eight PFASs were higher in operating landfills (or landfill cells) accepting primarily municipal waste, compared to closed municipal landfills. Landfills accepting primarily construction and demolition wastes produced leachate that had higher mean PFAS concentrations than municipal landfills...
February 24, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28228359/influence-of-process-parameters-on-the-extraction-of-soluble-substances-from-ofmsw-and-methane-production
#6
Rosalinda Campuzano, Simón González-Martínez
Microorganisms involved in anaerobic digestion require dissolved substrates to transport them through the cell wall to different processing units and finally to be disposed as waste, such as methane and carbon dioxide. In order to increase methane production, this work proposes to separate the soluble substances from OFMSW and analyse methane production from extracts and OFMSW. Using water as solvent, four extraction parameters were proposed: (1) Number of consecutive extractions, (2) Duration of mixing for every consecutive extraction, (3) OFMSW to water mass ratios 1:1, 1:2, and 1:3 and, (4) The influence of temperature on the extraction process...
February 19, 2017: Waste Management
https://www.readbyqxmd.com/read/28214713/comparative-analysis-of-metagenomes-of-italian-top-soil-improvers
#7
Federica Gigliucci, Gianfranco Brambilla, Rosangela Tozzoli, Valeria Michelacci, Stefano Morabito
Biosolids originating from Municipal Waste Water Treatment Plants are proposed as top soil improvers (TSI) for their beneficial input of organic carbon on agriculture lands. Their use to amend soil is controversial, as it may lead to the presence of emerging hazards of anthropogenic or animal origin in the environment devoted to food production. In this study, we used a shotgun metagenomics sequencing as a tool to perform a characterization of the hazards related with the TSIs. The samples showed the presence of many virulence genes associated to different diarrheagenic E...
February 16, 2017: Environmental Research
https://www.readbyqxmd.com/read/28214122/anaerobic-co-digestion-of-recalcitrant-agricultural-wastes-characterizing-of-biochemical-parameters-of-digestate-and-its-impacts-on-soil-ecosystem
#8
Adele Muscolo, Giovanna Settineri, Teresa Papalia, Emilio Attinà, Carmelo Basile, Maria Rosaria Panuccio
Anaerobic digestion (AD) of organic wastes is a promising alternative to landfilling for reducing Greenhouse Gas Emission (GHG) and it is encouraged by current regulation in Europe. Biogas-AD produced, represents a useful source of green energy, while its by-product (digestate) is a waste, that needs to be safely disposal. The sustainability of anaerobic digestion plants partly depends on the management of their digestion residues. This study has been focused on the environmental and economic benefits of co-digest recalcitrant agricultural wastes such olive wastes and citrus pulp, in combination with livestock wastes, straw and cheese whey for biogas production...
May 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28213731/fungi-based-treatment-of-brewery-wastewater-biomass-production-and-nutrient-reduction
#9
M Hultberg, H Bodin
The beer-brewing process produces high amounts of nutrient-rich wastewater, and the increasing number of microbreweries worldwide has created a need for innovative solutions to deal with this waste. In the present study, fungal biomass production and the removal of organic carbon, phosphorus and nitrogen from synthetic brewery wastewater were studied. Different filamentous fungi with a record of safe use were screened for growth, and Trametes versicolor, Pleurotus ostreatus and Trichoderma harzianum were selected for further work...
February 17, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28207856/biodiesel-production-potential-from-fat-fraction-of-municipal-waste-in-makkah
#10
K Shahzad, A S Nizami, M Sagir, M Rehan, S Maier, M Z Khan, O K M Ouda, I M I Ismail, A O BaFail
In the Kingdom of Saudi Arabia (KSA), millions of Muslims come to perform Pilgrimage every year. Around one million ton of municipal solid waste (MSW) is generated in Makkah city annually. The collected MSW is disposed of in the landfills without any treatment or energy recovery. As a result, greenhouse gas (GHG) emissions and contamination of the soil and water bodies along with leachate and odors are occurring in waste disposal vicinities. The composition of MSW shows that food waste is the largest waste stream (up to 51%) of the total generated MSW...
2017: PloS One
https://www.readbyqxmd.com/read/28207338/nutritional-economic-and-environmental-costs-of-milk-waste-in-a-classroom-school-breakfast-program
#11
Stacy A Blondin, Sean B Cash, Jeanne P Goldberg, Timothy S Griffin, Christina D Economos
OBJECTIVES: To measure fluid milk waste in a US School Breakfast in the Classroom Program and estimate its nutritional, economic, and environmental effects. METHODS: Fluid milk waste was directly measured on 60 elementary school classroom days in a medium-sized, urban district. The US Department of Agriculture nutrition database, district cost data, and carbon dioxide equivalent (CO2e) emissions and water footprint estimates for fluid milk were used to calculate the associated nutritional, economic, and environmental costs...
April 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28183027/effect-of-biochars-produced-from-solid-organic-municipal-waste-on-soil-quality-parameters
#12
P Randolph, R R Bansode, O A Hassan, Dj Rehrah, R Ravella, M R Reddy, D W Watts, J M Novak, M Ahmedna
New value-added uses for solid municipal waste are needed for environmental and economic sustainability. Fortunately, value-added biochars can be produced from mixed solid waste, thereby addressing solid waste management issues, and enabling long-term carbon sequestration. We hypothesize that soil deficiencies can be remedied by the application of municipal waste-based biochars. Select municipal organic wastes (newspaper, cardboard, woodchips and landscaping residues) individually or in a 25% blend of all four waste streams were used as feedstocks of biochars...
February 6, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28177400/can-organic-materials-reduce-excess-nutrient-leaching-from-manure-rich-paddock-soils
#13
Mohammed Masud Parvage, Barbro Ulén, Holger Kirchmann
Horse paddocks have been identified as a significant contributor of animal waste nutrients to natural waters; thus, modified paddock management is needed. Because chemical amendments pose a health risk to horses, an alternative for reducing nutrient translocation from manure is to add available organic residues to the soil. To examine the feasibility of outdoor use of organic materials to reduce nutrient losses from paddock soils, three commonly available organic materials (peat, wheat straw, and wood chips) were tested for their nutrient retention capacities in batch experiments followed by leaching experiments in an in-house lysimeter station using artificial rainfall...
January 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28131981/interaction-of-the-water-soluble-fraction-of-msw-composts-with-pb-ii-and-cu-ii-ions
#14
Paola Castaldi, Daniela Demurtas, Margherita Silvetti, Salvatore Deiana, Giovanni Garau
In this study we report on the interactions between the water-soluble fraction (WSF) of two municipal solid waste composts (C1- and C2-WSF) with Pb(II) and Cu(II) ions at pH 4.5. The Me(II) addition to the compost-WSFs led to the formation of soluble Me(II)-organic complexes (as highlighted by FT-IR spectroscopy), and to a decrease of the trace metals' solubility, which was greater for Pb(II) than Cu(II). This was due to the formation of insoluble Me(II) complexes involving the water-soluble organic carbon (WSOC) and the inorganic anions within both WSFs [1...
January 26, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28130988/single-and-multi-component-adsorption-of-psychiatric-pharmaceuticals-onto-alternative-and-commercial-carbons
#15
Vânia Calisto, Guilaine Jaria, Carla Patrícia Silva, Catarina I A Ferreira, Marta Otero, Valdemar I Esteves
This work describes the adsorptive removal of three widely consumed psychiatric pharmaceuticals (carbamazepine, paroxetine and oxazepam) from ultrapure water. Two different adsorbents were used: a commercial activated carbon and a non-activated waste-based carbon (PS800-150-HCl), produced by pyrolysis of primary paper mill sludge. These adsorbents were used in single, binary and ternary batch experiments in order to determine the adsorption kinetics and equilibrium isotherms of the considered pharmaceuticals...
January 25, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28128932/high-thermoelectric-power-factor-organic-thin-films-through-combination-of-nanotube-multilayer-assembly-and-electrochemical-polymerization
#16
Mario Culebras, Chungyeon Cho, Michelle Krecker, Ryan Smith, Yixuan Song, Clara M Gómez, Andrés Cantarero, Jaime C Grunlan
In an effort to produce effective thermoelectric nanocomposites with multiwalled carbon nanotubes (MWCNT), layer-by-layer assembly was combined with electrochemical polymerization to create synergy that would produce a high power factor. Nanolayers of MWCNT stabilized with poly(diallyldimethylammonium chloride) or sodium deoxycholate were alternately deposited from water. Poly(3,4-ethylene dioxythiophene) [PEDOT] was then synthesized electrochemically by using this MWCNT-based multilayer thin film as the working electrode...
February 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28120203/hair-from-different-ethnic-groups-vary-in-elemental-composition-and-nitrogen-and-phosphorus-mineralisation-in-soil
#17
N M Malepfane, P Muchaonyerwa
Disposal of hair wastes at landfills causes nitrate leaching to ground water, and use of the waste as fertiliser could be a viable option. This study was to determine elemental composition of major hair types in South Africa and their nitrogen (N) and phosphorus (P) release in soil. Wastes of African, White and Indian hair were obtained from local salons and analysed for carbon (C), N and sulphur (S) with the Leco CNS analyzer, and P, bases, aluminium (Al) and micronutrients, with the ICP. We also conducted an incubation study to determine changes in mineral N and P in soil...
February 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28112831/carbon-based-functional-materials-derived-from-waste-for-water-remediation-and-energy-storage
#18
REVIEW
Qinglang Ma, Yifu Yu, Melinda Sindoro, Anthony G Fane, Rong Wang, Hua Zhang
Carbon-based functional materials hold the key for solving global challenges in the areas of water scarcity and the energy crisis. Although carbon nanotubes (CNTs) and graphene have shown promising results in various fields of application, their high preparation cost and low production yield still dramatically hinder their wide practical applications. Therefore, there is an urgent call for preparing carbon-based functional materials from low-cost, abundant, and sustainable sources. Recent innovative strategies have been developed to convert various waste materials into valuable carbon-based functional materials...
January 23, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28112087/tackling-the-climate-targets-set-by-the-paris-agreement-cop-21-green-leadership-empowers-public-hospitals-to-overcome-obstacles-and-challenges-in-a-resource-constrained-environment
#19
E Weimann, B Patel
The healthcare sector itself contributes to climate change, the creation of hazardous waste, use of toxic metals such as mercury, and water and air pollution. To mitigate the effect of healthcare provision on the deteriorating environment and avoid creating further challenges for already burdened health systems, Global Green Hospitals was formed as a global network. Groote Schuur Hospital (GSH), as the leading academic hospital in Africa, joined the network in 2014. Since then, several projects have been initiated to reduce the amount of general waste, energy consumption and food waste, and create an environmentally friendlier and more sustainable hospital in a resource-constrained public healthcare setting...
December 21, 2016: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/28110257/acidification-with-nitric-acid-improves-chemical-characteristics-and-reduces-phytotoxicity-of-alkaline-chars
#20
Fernando Fornes, Rosa Maria Belda
Charred organic matter is recently receiving attention for its potential use as soilless growth medium. However, depending on its origin and on the manufacturing technology, it can result toxic for plants. This fact implies that a detoxifying treatment ought to be devised in order to reclaim char in this way. We have studied three materials which combine these factors: two pyrolyzed biochars, one from forest waste (BCH-FW) and another from olive mill waste (BCH-OMW), and one hydrothermally carbonized hydrochar from forest waste (HYD-FW)...
January 19, 2017: Journal of Environmental Management
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