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https://www.readbyqxmd.com/read/28917826/potassic-zeolites-from-brazilian-coal-ash-for-use-as-a-fertilizer-in-agriculture
#1
Camila Gomes Flores, Helena Schneider, Nilson Romeu Marcilio, Lizete Ferret, João Carlos Pinto Oliveira
Brazilian coal has an ash content ranging from 30 to 50% by weight. Consequently, its use in coal-fired thermoelectric for power production generates a lot of waste. The construction sector is the largest consumer of coal ash, but it cannot absorb the entire amount generated. Thus, other applications for coal ash should be studied in aim to optimize the use of this industrial waste. This research had as focus to synthesize potassic zeolite from of the coal ash into on potassium fertilizer for the grown wheat plant...
September 13, 2017: Waste Management
https://www.readbyqxmd.com/read/28915234/tissue-regeneration-using-endothelial-colony-forming-cells-promising-cells-for-vascular-repair
#2
REVIEW
Kimihiko Banno, Mervin C Yoder
To repair and rebuild damaged tissue in diseased human subjects remains a daunting challenge for clinical medicine. Proper vascular formation that serves to deliver blood-borne nutrients and adequate levels of oxygen and remove wastes is critical for successful tissue regeneration. Endothelial colony-forming cells (ECFC) represent a promising cell source for revascularization of damaged tissue. ECFC are identified by displaying a hierarchy of clonal proliferative potential and by pronounced postnatal vascularization ability in vivo...
September 15, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28915028/acid-rock-drainage-treatment-using-membrane-distillation-impacts-of-chemical-free-pretreatment-on-scale-formation-pore-wetting-and-product-water-quality
#3
Eric J Hull, Katherine Zodrow
Acid rock drainage (ARD) is a metal-rich wastewater that forms upon oxidation of sulfidic minerals. Although ARD impacts >12,000 miles of rivers in the U.S. and has an estimated cleanup cost of $32 - $72 billion, the low pH and high metal concentrations in ARD make rapid, high volume treatment without chemical addition difficult. This research focuses on a novel method of ARD treatment, membrane distillation (MD). In MD, heated ARD is separated from a cooled distillate by a hydrophobic, water-excluding membrane...
September 15, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28913784/managing-wastes-as-green-resources-cigarette-butt-synthesized-pesticides-are-highly-toxic-to-malaria-vectors-with-little-impact-on-predatory-copepods
#4
Kadarkarai Murugan, Udaiyan Suresh, Chellasamy Panneerselvam, Rajapandian Rajaganesh, Mathath Roni, Al Thabiani Aziz, Jiang-Shiou Hwang, Kuppusamy Sathishkumar, Aruliah Rajasekar, Suresh Kumar, Abdullah A Alarfaj, Akon Higuchi, Giovanni Benelli
The development of novel mosquito control tools is a key prerequisite to build effective and reliable Integrated Vector Management strategies. Here, we proposed a novel method using cigarette butts for the synthesis of Ag nanostructures toxic to young instars of the malaria vector Anopheles stephensi, chloroquine (CQ)-resistant malaria parasites Plasmodium falciparum and microbial pathogens. The non-target impact of these nanomaterials in the aquatic environment was evaluated testing them at sub-lethal doses on the predatory copepod Mesocyclops aspericornis...
September 14, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28912079/solid-anaerobic-digestion-state-of-art-scientific-and-technological-hurdles
#5
REVIEW
Laura André, André Pauss, Thierry Ribeiro
In this paper, a state-of-art about solid anaerobic digestion (AD), focused on recent progress and trends of research is proposed. Solid anaerobic digestion should be the most appropriate process for degradation of by-products with high total solid (TS) content, especially lignocellulosic materials like agricultural waste (straw, manure), household waste and food waste. Solid AD is already widely used in waste water treatment plant for treating plant for sewage sludge but could be more developed for lignocellulosic materials with high TS content...
September 5, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28912062/simulation-of-a-dynamical-ecotourism-system-with-low-carbon-activity-a-case-from-western-china
#6
Yuan He, Ping Huang, Hong Xu
Currently, sustainable tourism is becoming more and more important in developing ecological economies. To achieve low-carbon development, some industries, such as logistics and municipal solid waste, have already taken action, but tourism has not attached sufficient importance to this issue. This paper designs an ecotourism system including tourism, carbon waste (solid waste and sewage), and ecology (water supply and green areas) to simulate low-carbon ecotourism through a quantitative approach. This paper explores the tourism system as well as some interactive factors and studies their quantitative relationship based on historical data...
September 11, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28910645/performance-and-stability-of-sewage-sludge-digestion-under-co2-enrichment-a-pilot-study
#7
Luca Alibardi, Kevin Green, Lorenzo Favaro, Peter Vale, Ana Soares, Elise Cartmell, Yadira Bajón Fernández
Carbon dioxide (CO2) injection in anaerobic digestion has recently been proposed as an interesting possibility to boost methane (CH4) recovery from sludge and organic waste by converting a greenhouse gas into a renewable resource. This research assessed the effects of exogenous CO2 injection on performance and process stability of single-phase continuous anaerobic digesters. Two pilot scale reactors treating sewage sludge were operated for 130days. One reactor was periodically injected with CO2 while the other acted as control...
August 16, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28906448/valorization-of-by-products-from-commercial-fish-species-extraction-and-chemical-properties-of-skin-gelatins
#8
Sérgio C Sousa, José A Vázquez, Ricardo I Pérez-Martín, Ana P Carvalho, Ana M Gomes
Fish skins constitute an important fraction of the enormous amount of wastes produced by the fish processing industry, part of which may be valorized through the extraction of gelatins. This research exploited the extraction and characterization of gelatins from the skin of three seawater fish species, namely yellowfin tuna (Thunnus albacares), blue shark (Prionace glauca), and greenland halibut (Reinhardtius hippoglossoides). Characterization included chemical composition, rheology, structure, texture, and molecular weight, whereas extraction studies intended to reduce costly steps during extraction process (reagents concentration, water consumption, and time of processing), while maintaining extraction efficiency...
September 14, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28904118/nutrition-interventions-in-the-lives-saved-tool-list
#9
REVIEW
Adrienne Clermont, Neff Walker
The Lives Saved Tool (LiST) was initially developed in 2003 to estimate the impact of increasing coverage of efficacious interventions on under-5 mortality. Over time, the model has been expanded to include more outcomes (neonatal mortality, maternal mortality, stillbirths) and interventions. The model has also added risk factors, such as stunting and wasting, and over time has attempted to capture a full range of nutrition and nutrition-related interventions (e.g., antenatal supplementation, breastfeeding promotion, child supplemental feeding, acute malnutrition treatment), practices (e...
September 13, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28902315/-health-education-trough-the-development-of-scientific-skills-in-chilean-schools
#10
Soledad Burgos, Karla Yohannessen, Andrea Álvarez, Alejandro Rebolledo, María Teresa Valenzuela
Objective: To describe the interests, preferred topics and learning in public health issues emerging from Chilean students with their participation in a science education experience. Materials and methods: A qualitative exploratory study was conducted in 29 school research groups through the project Salud Con-Ciencia en tu Barrio, based on a content analysis of texts and narratives of students. Results: Students prioritize the situation of abandoned animals, waste management, security and urban infrastructure, mainly...
May 2017: Salud Pública de México
https://www.readbyqxmd.com/read/28899675/kraft-lignin-biorefinery-a-proposal
#11
Jianjun Hu, Quanguo Zhang, Duu-Jong Lee
Lignin is a huge energy and carbon reserve but owing to its highly biologically recalcitrant nature it is commonly regarded as a waste in lignocellulosic biomass biorefinery. To realize the lignin biorefinery, it is proposed to use Kraft lignin, isolated from black liquor from Kraft pulping mills, as starting material to be fragmented by fast pyrolysis or selective catalysis to aromatic sub-units and to be post-refining with additional cleavage reaction and separation/purification as commodity aromatics pool in chemical industries...
September 1, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28899615/metrology-for-decommissioning-nuclear-facilities-partial-outcomes-of-joint-research-project-within-the-european-metrology-research-program
#12
Jiri Suran, Petr Kovar, Jana Smoldasova, Jaroslav Solc, Raf Van Ammel, Maria Garcia Miranda, Ben Russell, Dirk Arnold, Daniel Zapata-García, Sven Boden, Bart Rogiers, Johan Sand, Kari Peräjärvi, Philip Holm, Bruno Hay, Guillaume Failleau, Stephane Plumeri, Yves Laurent Beck, Tomas Grisa
Decommissioning of nuclear facilities incurs high costs regarding the accurate characterisation and correct disposal of the decommissioned materials. Therefore, there is a need for the implementation of new and traceable measurement technologies to select the appropriate release or disposal route of radioactive wastes. This paper addresses some of the innovative outcomes of the project "Metrology for Decommissioning Nuclear Facilities" related to mapping of contamination inside nuclear facilities, waste clearance measurement, Raman distributed temperature sensing for long term repository integrity monitoring and validation of radiochemical procedures...
September 1, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28898823/highly-porous-carbon-from-a-natural-cellulose-fiber-as-high-efficiency-sorbent-for-lead-in-waste-water
#13
Manikandan Ilangovan, Vijaykumar Guna, Sharon Olivera, Ashwini Ravi, H B Muralidhara, M S Santosh, Narendra Reddy
The persistence of hollow centre in the carbon obtained from milkweed floss provides exceptional sorption characteristics, not seen in common biomasses or their derivatives. A considerably high sorption of 320mg of lead per gram of milkweed carbon was achieved without any chemical modification to the biomass. In this research, we have carbonized milkweed floss and used the carbon as a sorbent for lead in waste water. A high surface area of 170m(2)g(-1) and pore volume of 1.07cm(3)g(-1) was seen in the carbon...
August 24, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28898811/modelling-the-correlations-of-e-waste-quantity-with-economic-increase
#14
Abhishek Kumar Awasthi, Federica Cucchiella, Idiano D'Adamo, Jinhui Li, Paolo Rosa, Sergio Terzi, Guoyin Wei, Xianlai Zeng
Waste from Electrical and Electronic Equipment (WEEE or e-waste) is regarded as one of the fastest growing waste streams in the world and is becoming an emerging issue owing to adverse consequences on the natural environment and the human health. This research article reveals the presence of a strong linear correlation among global e-waste generation and Gross Domestic Product. The obtained results indicate that the best fit for data can be reached by comparing e-waste collected volumes and GDP PPS. More in detail, an increase of 1000 GDP PPS means an additional 0...
September 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28895946/dna-sip-based-genome-centric-metagenomics-identifies-key-long-chain-fatty-acid-degrading-populations-in-anaerobic-digesters-with-different-feeding-frequencies
#15
Ryan M Ziels, Diana Z Sousa, H David Stensel, David A C Beck
Fats, oils and greases (FOG) are energy-dense wastes that can be added to anaerobic digesters to substantially increase biomethane recovery via their conversion through long-chain fatty acids (LCFAs). However, a better understanding of the ecophysiology of syntrophic LCFA-degrading microbial communities in anaerobic digesters is needed to develop operating strategies that mitigate inhibitory LCFA accumulation from FOG. In this research, DNA stable isotope probing (SIP) was coupled with metagenomic sequencing for a genome-centric comparison of oleate (C18:1)-degrading populations in two anaerobic codigesters operated with either a pulse feeding or continuous-feeding strategy...
September 12, 2017: ISME Journal
https://www.readbyqxmd.com/read/28894537/lifestyles-in-suburban-populations-a-systematic-review
#16
REVIEW
Samira Khayat, Mahrokh Dolatian, Ali Navidian, Zohreh Mahmoodi, Nasibeh Sharifi, Amir Kasaeian
BACKGROUND: Lifestyle and suburban population are important issues in the field of health. The living conditions of informal settlements can lead to acquisition of an unhealthy lifestyle. OBJECTIVE: This study has been designed to investigate the articles that have been published regarding lifestyle in suburban populations. METHODS: The present research was a systematic review of studies in databases including Iranmedex, Magiran, SID, Irandoc, PubMed, Google Scholar, Science Direct and Scopus, in 2017...
July 2017: Electronic Physician
https://www.readbyqxmd.com/read/28893498/hydrothermal-liquefaction-of-agricultural-and-forestry-wastes-state-of-the-art-review-and-future-prospects
#17
REVIEW
Leichang Cao, Cheng Zhang, Huihui Chen, Daniel C W Tsang, Gang Luo, Shicheng Zhang, Jianmin Chen
Hydrothermal liquefaction has been widely applied to obtain bioenergy and high-value chemicals from biomass in the presence of a solvent at moderate to high temperature (200-550°C) and pressure (5-25MPa). This article summarizes and discusses the conversion of agricultural and forestry wastes by hydrothermal liquefaction. The history and development of hydrothermal liquefaction technology for lignocellulosic biomass are briefly introduced. The research status in hydrothermal liquefaction of agricultural and forestry wastes is critically reviewed, particularly for the effects of liquefaction conditions on bio-oil yield and the decomposition mechanisms of main components in biomass...
September 1, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28889266/occupational-metal-exposure-and-parkinsonism
#18
W Michael Caudle
Parkinsonism is comprised of a host of neurological disorders with an underlying clinical feature of movement disorder, which includes many shared features of bradykinesia, tremor, and rigidity. These clinical outcomes occur subsequent to pathological deficits focused on degeneration or dysfunction of the nigrostriatal dopamine system and accompanying pathological inclusions of alpha-synuclein and tau. The heterogeneity of parkinsonism is equally matched with the complex etiology of this syndrome. While a small percentage can be attributed to genetic alterations, the majority arise from an environmental exposure, generally composed of pesticides, industrial compounds, as well as metals...
2017: Advances in Neurobiology
https://www.readbyqxmd.com/read/28888663/impact-of-air-manganese-on-child-neurodevelopment-in-east-liverpool-ohio
#19
Erin N Haynes, Heidi Sucharew, Timothy J Hilbert, Pierce Kuhnell, Alonzo Spencer, Nicholas C Newman, Roxanne Burns, Robert Wright, Patrick J Parsons, Kim N Dietrich
BACKGROUND: East Liverpool, Ohio, the site of a hazardous waste incinerator and a manganese (Mn) processor, has had air Mn concentrations exceeding United States Environmental Protection Agency reference levels for over a decade. Save Our County, Inc., a community organization, was formed to address community environmental health concerns related to local industry. Researchers from the University of Cincinnati partnered with Save Our County to determine if air Mn had an impact on the neurocognitive function of children in the community...
September 6, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28888116/comprehensive-review-on-toxicity-of-persistent-organic-pollutants-from-petroleum-refinery-waste-and-their-degradation-by-microorganisms
#20
Sunita J Varjani, Edgard Gnansounou, Ashok Pandey
Control and prevention of environmental pollution has become a worldwide issue of concern. Aromatic hydrocarbons including benzene, toluene, ethyl benzene, xylene (BTEX) and polyaromatic hydrocarbons (PAHs) are persistent organic pollutants (POPs), released into the environment mainly by exploration activities of petroleum industry. These pollutants are mutagenic, carcinogenic, immunotoxic and teratogenic to lower and higher forms of life i.e. microorganisms to humans. According to the International Agency for Research on Cancer (IARC) and United States Environmental Protection Agency (U...
September 4, 2017: Chemosphere
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