keyword
MENU ▼
Read by QxMD icon Read
search

Waste

keyword
https://www.readbyqxmd.com/read/28544990/degradation-of-mecoprop-in-polluted-landfill-leachate-and-waste-water-in-a-moving-bed-biofilm-reactor
#1
Mònica Escolà Casas, Tue Kjærgaard Nielsen, Witold Kot, Lars Hestbjerg Hansen, Anders Johansen, Kai Bester
Mecoprop is a common pollutant in effluent-, storm- and groundwater as well as in leachates from derelict dumpsites. Thus, bioremediation approaches may be considered. We conducted batch experiments with moving bed biofilm (MBBR)-carriers to understand the degradation of mecoprop. As a model, the carriers were incubated in effluent from a conventional wastewater treatment plant which was spiked to 10, 50 and 100 μg L(-1) mecoprop. Co-metabolic processes as well as mineralization were studied. Initial mecoprop concentration and mecoprop degradation impacted the microbial communities...
May 17, 2017: Water Research
https://www.readbyqxmd.com/read/28544988/co-gasification-of-bituminous-coal-and-hydrochar-derived-from-municipal-solid-waste-reactivity-and-synergy
#2
Juntao Wei, Qinghua Guo, Qing He, Lu Ding, Kunio Yoshikawa, Guangsuo Yu
In this work, the influences of gasification temperature and blended ratio on co-gasification reactivity and synergy of Shenfu bituminous coal (SF) and municipal solid waste-derived hydrochar (HTC) were investigated using TGA. Additionally, active alkaline and alkaline earth metal (AAEM) transformation during co-gasification was quantitatively analyzed by inductively coupled plasma optical emission spectrometer for correlating synergy on co-gasification reactivity. The results showed that higher char gasification reactivity existed at higher HTC char proportion and gasification temperature, and the main synergy behaviour on co-gasification reactivity was performed as synergistic effect...
May 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28544901/alkaline-electrochemical-advanced-oxidation-process-for-chromium-oxidation-at-graphitized-multi-walled-carbon-nanotubes
#3
Yudong Xue, Shili Zheng, Zhi Sun, Yi Zhang, Wei Jin
Alkaline electrochemical advanced oxidation processes for chromium oxidation and Cr-contaminated waste disposal were reported in this study. The highly graphitized multi-walled carbon nanotubes g-MWCNTs modified electrode was prepared for the in-situ electrochemical generation of HO2(-). RRDE test results illustrated that g-MWCNTs exhibited much higher two-electron oxygen reduction activity than other nanocarbon materials with peak current density of 1.24 mA cm(-2), %HO2(-) of 77.0% and onset potential of -0...
May 20, 2017: Chemosphere
https://www.readbyqxmd.com/read/28544781/pd-nanoparticles-immobilized-on-individual-calcium-carbonate-plate-derived-from-mussel-shell-waste-an-eco-friendly-catalyst-for-copper-free-sonogashira-coupling-reaction
#4
Trin Saetan, Chutiparn Lertvachirapaiboon, Ekgasit Sanong, Mongkol Sukwattanasinitt, Sumrit Wacharasindhu
Conversion of waste into high value materials has been considered an important sustainability strategy in modern chemical industries. Large volume of shell waste is generated globally from mussel cultivation. In this work, mussel shell wastes (Perna viridis) are transformed into individual calcium carbonate plate (ICCP) and apply as a support for heterogeneous catalyst. Palladium nanoparticles (3-6 nm) are deposited with even dispersion on ICCP surface as demonstrated by X-ray diffraction and scanning electron microscopy...
May 22, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28544414/effective-low-cost-recovery-of-toxic-arsenate-anions-from-water-using-hollow-sphere-trapper-geodes
#5
Sherif A El-Safty, Mohamed A Shenashen, Naeem Akhtar, Mahmoud M Selim, Wafaa M Morsy, Hitoshi Yamaguchi, Satoshi Kawada, Abdulaziz A Alhamid, Naoki Ohashi, Izumi Ichinose, Ahmed Alamoudi
Because of the devastating impacts of arsenic to terrestrial and aquatic organisms, recovery, removal, disposal and management of arsenic-contaminated water has a considerable challenge and become an urgent necessity in the field of water treatment. This study reports control fabrication of low-cost adsorbents based on microscopic NiO hollow sphere geode-shelled a 100 nm of poly-CN nano-sphere particles-like nodules of poly-carbon nitride that intrinsically stacked and wrapped around the hollow nest spheres to form 500-700 nm shell...
May 22, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28543927/the-waiting-period-following-cavotricuspid-isthmus-ablation-opportunity-for-watchful-observation-or-a-waste-of-time
#6
EDITORIAL
Advay G Bhatt, Suneet Mittal
No abstract text is available yet for this article.
May 24, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28543305/effects-of-nitrogenous-wastes-on-survival-of-the-barton-springs-salamander-eurycea-sosorum
#7
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/28542506/impact-evaluation-of-different-cash-based-intervention-modalities-on-child-and-maternal-nutritional-status-in-sindh-province-pakistan-at-6-mo-and-at-1-y-a-cluster-randomised-controlled-trial
#8
Bridget Fenn, Tim Colbourn, Carmel Dolan, Silke Pietzsch, Murtaza Sangrasi, Jeremy Shoham
BACKGROUND: Cash-based interventions (CBIs), offer an interesting opportunity to prevent increases in wasting in humanitarian aid settings. However, questions remain as to the impact of CBIs on nutritional status and, therefore, how to incorporate them into emergency programmes to maximise their success in terms of improved nutritional outcomes. This study evaluated the effects of three different CBI modalities on nutritional outcomes in children under 5 y of age at 6 mo and at 1 y. METHODS AND FINDINGS: We conducted a four-arm parallel longitudinal cluster randomised controlled trial in 114 villages in Dadu District, Pakistan...
May 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28542442/pedogenetic-processes-in-anthrosols-with-pretic-horizon-amazonian-dark-earth-in-central-amazon-brazil
#9
Rodrigo S Macedo, Wenceslau G Teixeira, Marcelo M Corrêa, Gilvan C Martins, Pablo Vidal-Torrado
Anthrosols known as Amazonian Dark Earth (ADE) have borne witness to the intensification of sedentary patterns and the demographic increase in Central Amazon. As a result, a recurring pattern has been observed of mounds with ADE arising from domestic activities and the disposal of waste. The objective of this research was to demonstrate the relationship of these anthropic activities with pedogenetic formation processes of ADE in the municipality of Iranduba, Brazil. Disturbed and undisturbed soil samples were taken from two areas of ADE (pretic horizon) and from a non-anthropic pedon...
2017: PloS One
https://www.readbyqxmd.com/read/28542391/effectiveness-of-facility-based-personalized-maternal-nutrition-counseling-in-improving-child-growth-and-morbidity-up-to-18-months-a-cluster-randomized-controlled-trial-in-rural-burkina-faso
#10
Laetitia Nikièma, Lieven Huybregts, Yves Martin-Prevel, Philippe Donnen, Hermann Lanou, Joep Grosemans, Priscilla Offoh, Michèle Dramaix-Wilmet, Blaise Sondo, Dominique Roberfroid, Patrick Kolsteren
The period from conception to 24 months of age is a crucial window for nutrition interventions. Personalized maternal counseling may improve childbirth outcomes, growth, and health. We assessed the effectiveness of facility-based personalized maternal nutrition counseling (from pregnancy to 18 months after birth) in improving child growth and health in rural Burkina Faso. We conducted a paired cluster randomized controlled trial in a rural district of Burkina Faso with 12 primary health centers (clusters). Healthcare providers in the intervention centers received patient-centered communication and nutrition counseling training...
2017: PloS One
https://www.readbyqxmd.com/read/28542007/uranium-mining-and-norm-in-north-america-some-perspectives-on-occupational-radiation-exposure
#11
Steven H Brown, Douglas B Chambers
All soils and rocks contain naturally occurring radioactive materials (NORM). Many ores and raw materials contain relatively elevated levels of natural radionuclides, and processing such materials can further increase the concentrations of naturally occurring radionuclides. In the U.S., these materials are sometimes referred to as technologically-enhanced naturally occurring radioactive materials (TENORM). Examples of NORM minerals include uranium ores, monazite (a source of rare earth minerals), and phosphate rock used to produce phosphate fertilizer...
July 2017: Health Physics
https://www.readbyqxmd.com/read/28541954/effects-of-two-different-water-sources-used-for-irrigation-on-the-soil-geochemical-properties-and-the-quality-of-the-lohan-guava-psidium-guajava-l-lohan
#12
Dominic Soloman George, Kelvin Kiran Anthony, Vicknesha Santhirasegaram, Nadiah Mohd Saruan, Hasvinder Kaur, Zuliana Razali, Chandran Somasundram
The effect of two different water sources (treated waste water and lake water) used for irrigation on the soil geochemical properties and the fruit quality parameters of the Lohan guava were studied. The fruits' physical attributes, physicochemical attributes, nutritional attributes, mineral content as well as consumers' acceptance were evaluated. The properties of the different water sources and their effect, on both the soil and the quality of the fruits, were evaluated. Analysis of the irrigation water revealed that treated waste water was of acceptable quality with reference to irrigation water quality guidelines, while the lake water used for irrigation fell short in several aspects...
May 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28541948/attached-%C3%AE-cyclodextrin-%C3%AE-2-3-epoxypropoxy-propyl-trimethoxysilane-to-graphene-oxide-and-its-application-in-copper-removal
#13
Zongxue Yu, Qi Chen, Liang Lv, Yang Pan, Guangyong Zeng, Yi He
The environmental applications of graphene oxide and β-cyclodextrin (β-CD) have attracted great attention since their first discovery. Novel nanocomposites were successfully prepared by using an esterification reaction between β-cyclodextrin/γ-(2,3-epoxypropoxy) propyl trimethoxysilane grafted graphene oxide (β-CD/GPTMS/GO). The β-CD/GPTMS/GO nanocomposites were used to remove the Cu(2+) from aqueous solutions. The characteristics of β-CD/GPTMS/GO were detected by scanning electron microscopy (SEM), Fourier transform infrared, X-ray diffraction (XRD), thermogravimetric analysis (TG) and energy dispersive X-ray (EDX)...
May 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28541931/the-role-of-constructed-wetlands-for-biomass-production-within-the-water-soil-waste-nexus
#14
C T Avellan, R Ardakanian, P Gremillion
The use of constructed wetlands for water pollution control has a long standing tradition in urban, peri-urban, rural, agricultural and mining environments. The capacity of wetland plants to take up nutrients and to filter organic matter has been widely discussed and presented in diverse fora and published in hundreds of articles. In an ever increasingly complex global world, constructed wetlands not only play a role in providing safe sanitation in decentralized settings, shelter for biodiversity, and cleansing of polluted sites, in addition, they produce biomass that can be harvested and used for the production of fodder and fuel...
May 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28541771/distributions-sources-and-ecological-risk-of-polycyclic-aromatic-hydrocarbons-pahs-in-subsurface-water-of-urban-old-industrial-relocation-areas-a-case-study-in-shenyang-china
#15
Ying-Hua Li, Hai-Bo Li, Xin-Yang Xu, Si-Yao Xiao, Si-Qi Wang
During a 12-month study period, the levels, distributions, sources and ecological risk of 16 polycyclic aromatic hydrocarbons (PAHs) were investigated in subsurface water of Shenyang (the largest urban industrial relocation base in China). The results showed that ΣPAH concentration ranged from 0.21 to 1.07 µg/L, in descending order as follows, summer, autumn, spring and winter. Comparing with the situations before relocation, there was a significant decrease in Fluorene, Phenanthrene and Anthracene levels...
May 25, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28541682/powerful-thermally-stable-one-pot-preparable-and-recyclable-electrophilic-trifluoromethylating-agents-2-8-difluoro-and-2-3-7-8-tetrafluoro-s-trifluoromethyl-dibenzothiophenium-salts
#16
Teruo Umemoto, Bin Zhang, Tianhao Zhu, Xiaocong Zhou, Peng Zhang, Song Hu, Yuanqiang Li
Although many electrophilic trifluoromethylating agents have been reported to date, practically useful reagents have yet to be developed. S-(Trifluoromethyl)dibenzothiophenium salts, known as Umemoto's reagents, have two significant drawbacks that have hampered their practical application: (1) synthesis involving many steps and (2) the formation of large amounts of dibenzothiophene as waste after trifluoromethylation. Our idea to substitute fluorine at specific positions on the dibenzothiophenium rings has resulted in massive improvements in the synthesis, properties, reactivity, and applications of these compounds...
May 25, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28541160/an-ergonomic-assessment-of-hospital-linen-bag-handling
#17
Erin Teeple, Jack T Dennerlein, Dean Hashimoto, Luis A Soto, Elena Losina, Jeffrey N Katz
The Joint Commission provides accreditation standards for staging hospital waste, but there are no federal lifting safety standards for linen bags. We evaluated hospital laundry bag lifting using the Revised National Institute for Occupational Safety and Health (NIOSH) Lifting Equation. We hypothesized that the permitted 32-gallon linen container capacity might allow filling to weights above our calculated Recommended Weight Limit (RWL) for some lifting positions and contents. We found that 30- and 40-gallon bags filled with loose dry linen had predicted weights within estimated RWLs only for lifts close to the body...
January 1, 2017: New Solutions: a Journal of Environmental and Occupational Health Policy: NS
https://www.readbyqxmd.com/read/28541155/characterization-of-aminoaciduria-and-hypoaminoacidemia-in-dogs-with-hepatocutaneous-syndrome
#18
John P Loftus, Sharon A Center, John M Lucy, Julie A Stanton, Sean P McDonough, Jeanine Peters-Kennedy, Kenneth A Arceneaux, Molly A Bechtold, Courtney L Bennett, Christina A Bradbury, Martha G Cline, Deborah L Hall-Fonte, Julie F Hammer-Landrum, Janice L Huntingford, Jennifer Marshall, Kristopher S Sharpe, Jessica L Redin, Samuel T Selva, Tomasina A Lucia
OBJECTIVE To characterize aminoaciduria and plasma amino acid concentrations in dogs with hepatocutaneous syndrome (HCS). ANIMALS 20 client-owned dogs of various breeds and ages. PROCEDURES HCS was definitively diagnosed on the basis of liver biopsy specimens (n = 12), gross and histologic appearance of skin lesions (4), and examination of skin and liver biopsy specimens (2) and presumptively diagnosed on the basis of cutaneous lesions with compatible clinicopathologic and hepatic ultrasonographic (honeycomb or Swiss cheese pattern) findings (2)...
June 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28540954/hydrazone-switches-and-things-in-between
#19
Ivan Aprahamian
This feature article surveys the various ways by which a structurally simple hydrazone can be used in accessing different functional materials, mainly photo/chemically activated switches, fluorophores and sensors. The modularity of this functional group enabled us to develop new switching mechanisms, pathways, cascades and loops, while addressing challenges in the field, such as waste accumulation, how to control cross-talk between different types of switches, developing photochromic compounds with benign activation wavelengths, among others...
May 25, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28540744/production-of-single-cell-protein-scp-from-food-and-agricultural-waste-by-using-saccharomyces-cerevisiae
#20
Teresa Gervasi, Vito Pellizzeri, Giorgio Calabrese, Giuseppa Di Bella, Nicola Cicero, Giacomo Dugo
Food waste is the single-largest component of the waste stream, in order to protect and safeguard the public health, useful and innovative recycling methods are investigated. The conversion of food wastes in value-added products is becoming a more economically viable and interesting practice. Food waste, collected in the distribution sector and citrus industries, was characterised for its potential as a raw material to use in fermentation processes. In this study, the production of single-cell protein (SCP) using food waste as a substrate was investigated...
May 25, 2017: Natural Product Research
keyword
keyword
26786
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"