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Waste water management

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https://www.readbyqxmd.com/read/28634869/discharge-permit-market-and-farm-management-nexus-an-approach-for-eutrophication-control-in-small-basins-with-low-income-farmers
#1
Somaye Imani, Mohammad Hossein Niksokhan, Shervin Jamshidi, Karim C Abbaspour
The economic concerns of low-income farmers are barriers to nutrient abatement policies for eutrophication control in surface waters. This study brings up a perspective that focuses on integrating multiple-pollutant discharge permit markets with farm management practices. This aims to identify a more economically motivated waste load allocation (WLA) for non-point sources (NPS). For this purpose, we chose the small basin of Zrebar Lake in western Iran and used the soil and water assessment tool (SWAT) for modeling...
July 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28616175/seasonal-habitat-use-by-elephants-loxodonta-africana-in-the-mole-national-park-of-ghana
#2
George Ashiagbor, Emmanuel Danquah
To avoid unnecessary waste of limited resources and to help prioritize areas for conservation efforts, this study aimed to provide information on habitat use by elephants between the wet and dry seasons in the Mole National Park (MNP) of Ghana. We compiled coordinates of 516 locations of elephants' encounters, 256 for dry season and 260 for wet season. Using nine predictor variables, we modeled the probability of elephant's distribution in MNP. We threshold the models to "suitable" and "nonsuitable" regions of habitat use using the equal training sensitivity and specificity values of 0...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28602000/integrated-waste-load-allocation-for-river-water-pollution-control-under-uncertainty-a-case-study-of-tuojiang-river-china
#3
Jiuping Xu, Shuhua Hou, Liming Yao, Chaozhi Li
This paper presents a bi-level optimization waste load allocation programming model under a fuzzy random environment to assist integrated river pollution control. Taking account of the leader-follower decision-making in the water function zones framework, the proposed approach examines the decision making feedback relationships and conflict coordination between the river basin authority and the regional Environmental Protection Agency (EPA) based on the Stackelberg-Nash equilibrium strategy. In the pollution control system, the river basin authority, as the leader, allocates equitable emissions rights to different subareas, and the then subarea EPA, as the followers, reallocates the limited resources to various functional zones to minimize pollution costs...
June 10, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28600313/novel-microbial-assemblages-dominate-weathered-sulfide-bearing-rock-from-copper-nickel-deposits-in-the-duluth-complex-minnesota-usa
#4
Daniel S Jones, Kim A Lapakko, Zachary J Wenz, Michael C Olson, Elizabeth W Roepke, Michael J Sadowsky, Paige J Novak, Jake V Bailey
The Duluth Complex in northeastern Minnesota hosts economically-significant deposits of copper, nickel, and platinum group elements (PGEs). The primary sulfide mineralogy of these deposits includes the minerals pyrrhotite, chalcopyrite, pentlandite, and cubanite, and weathering experiments show that most sulfide-bearing rock from the Duluth Complex generates moderately acidic leachate (pH 4-6). Microorganisms are important catalysts for metal sulfide oxidation and could influence water quality from mines in the Duluth Complex...
June 9, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28595806/conversion-of-biowastes-to-biomaterial-an-innovative-waste-management-approach
#5
M Bobby Kannan, Karly Ronan
The study suggests that biowastes (eggshells and urine) can be potentially used as precursors to produce hydroxyapatite (HAp) biomaterial in a simple chemical process. A batch reactor was used in this work to produce HAp powder from eggshells and synthetic urine (SU). Fine powder of calcined eggshells was dissolved in water to produce aqueous calcium hydroxide. The solution was then mixed with concentrated SU in stoichiometric amounts corresponding to HAp (Ca/P molar ratio∼1.67). The initial pH of the solution was alkaline (pH∼8...
June 5, 2017: Waste Management
https://www.readbyqxmd.com/read/28586368/stabilization-of-lead-in-incineration-fly-ash-by-moderate-thermal-treatment-with-sodium-hydroxide-addition
#6
Bing Gong, Yi Deng, Yuanyi Yang, Yong He, Xiaolong Sun, Li-Ya Ge, Kewei Zhang, Weizhong Yang
Municipal solid waste (MSW) incineration fly ash (IFA) can be potentially reused as a substitute for some raw materials, but treatment for detoxification is indispensable owing to high contents of heavy metals in fly ash. In the present work, due to excessive leaching concentration of lead (Pb), a moderate thermal treatment with sodium hydroxide (NaOH) addition was employed to stabilize Pb in IFA. The moderate thermal treatment was performed under relatively low temperature ranging from 300 to 500°C and at retention time from 1 to 3 h with NaOH addition in a range of 1 to 9%...
2017: PloS One
https://www.readbyqxmd.com/read/28582713/cesium-induced-inhibition-of-bacterial-growth-of-pseudomonas-aeruginosa-pao1-and-their-possible-potential-applications-for-bioremediation-of-wastewater
#7
Sung-Min Kang, Sung-Chan Jang, Nam Su Heo, Seo Yeong Oh, Hye-Jin Cho, Muruganantham Rethinasabapathy, A T Ezhil Vilian, Young-Kyu Han, Changhyun Roh, Yun Suk Huh
Radioactive isotopes and fission products have attracted considerable attention because of their long lasting serious damage to the health of humans and other organisms. This study examined the toxicity and accumulation behavior of cesium towards P. aeruginosa PAO1 and its capacity to remove cesium from waste water. Interestingly, the programmed bacterial growth inhibition occurred according to the cesium environment. The influence of cesium was analyzed using several optical methods for quantitative evaluation...
May 26, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28578866/nitrogen-losses-to-the-environment-following-food-based-digestate-and-compost-applications-to-agricultural-land
#8
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/28576597/benchmark-dynamics-in-the-environmental-performance-of-ports
#9
Martí Puig, Antonis Michail, Chris Wooldridge, Rosa Mari Darbra
This paper analyses the 2016 environmental benchmark performance of the port sector, based on a wide representation of EcoPorts members. This is the fifth time that this study has been conducted as an initiative of the European Sea Ports Organisation (ESPO). The data and results are derived from the Self-Diagnosis Method (SDM), a concise checklist against which port managers can self-assess the environmental management of their port in relation to the performance of the EcoPorts membership. The SDM tool was developed in the framework of the ECOPORTS project (2002-2005) and it is managed by ESPO...
May 31, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28574076/bushy-sphere-dendrites-with-husk-shaped-branches-axially-spreading-out-from-the-core-for-photo-catalytic-oxidation-remediation-of-toxins
#10
Mohamed A Shenashen, Satoshi Kawada, Mahmoud M Selim, Wafaa M Morsy, Hitoshi Yamaguchi, Abdulaziz A Alhamid, Naoki Ohashi, Izumi Ichinose, Sherif A El-Safty
This work describes densely interlinked bushy "tree-like chains" characterized by neatly branched sphere dendrites (bushy sphere dendrites, BSD) with long fan-like, husk-shaped branching paths that extend longitudinally from the core axis of the {110}-exposed plane. We confirmed that the hierarchical dendrite surfaces created bowls of swirled caves along the tree-tube in the mat-like branches. These surfaces had high-index catalytic site facets associated with the formation of ridges/defects on the dominant {110}-top-cover surface...
June 2, 2017: Nanoscale
https://www.readbyqxmd.com/read/28566035/pilot-scale-steam-aging-of-steel-slags
#11
Praveen Kumar, D Satish Kumar, K Marutiram, Smr Prasad
Solid waste management has gained importance in the steel industry in view of rising environmental concerns and scarcity of raw materials. In spite of significant developments in reducing waste generation and development of recycling technologies, steel slag is still a concern for the industry as most of it is dumped. Steel slag is similar to stone aggregates in strength, but its volumetric instability in contact with water hinders its application as aggregates in construction. A part of steel slag is normally exposed to rain and sun for natural aging and stabilization for months before use...
June 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28553963/frequency-dependent-stability-of-cnt-joule-heaters-in-ionizable-media-and-desalination-processes
#12
Alexander V Dudchenko, Chuxiao Chen, Alexis Cardenas, Julianne Rolf, David Jassby
Water shortages and brine waste management are increasing challenges for coastal and inland regions, with high-salinity brines presenting a particularly challenging problem. These high-salinity waters require the use of thermally driven treatment processes, such as membrane distillation, which suffer from high complexity and cost. Here, we demonstrate how controlling the frequency of an applied alternating current at high potentials (20 Vpp) to a porous thin-film carbon nanotube (CNT)/polymer composite Joule heating element can prevent CNT degradation in ionizable environments such as high-salinity brines...
July 2017: Nature Nanotechnology
https://www.readbyqxmd.com/read/28552816/spanish-strategy-on-bioeconomy-towards-a-knowledge-based-sustainable-innovation
#13
REVIEW
Manuel Lainez, José Manuel González, Alfredo Aguilar, Carmen Vela
Spain launched its own strategy on bioeconomy in January 2016 aiming at boosting a bioeconomy based on the sustainable and efficient production and use of biological resources. It highlights global societal challenges related with agricultural and biotechnological sciences in Spain and the great dynamism of the private sectors involved, particularly the agri-food, biotech and biomass sectors. The targeted sectors are food, agriculture and forestry, conditioned by water availability. It also includes the production of those industrial bioproducts and bioenergy obtained from the use and valorisation of wastes and residues and other non-conventional sources of biomass, in a circular economy...
May 25, 2017: New Biotechnology
https://www.readbyqxmd.com/read/28548175/the-water-based-synthesis-of-chemically-stable-zr-based-mofs-using-pyridine-containing-ligands-and-their-exceptionally-high-adsorption-capacity-for-iodine
#14
Zhe Wang, Ying Huang, Jian Yang, Yongsheng Li, Qixin Zhuang, Jinlou Gu
The primary pollutant, radioactive iodine (I2), has become a worldwide concern due to its serious ill effects of radiotoxicity on human health. Therefore, it is of great significance to develop novel adsorbents for effectively eliminating I2 from nuclear waste. Herein, we reported a Zr-based MOF adsorbent constructed by utilizing pyridine-containing pyridine-dicarboxylic acid (PYDC) as organic ligands (UiO-66-PYDC) as well as active sites for the efficient removal of I2. UiO-66-PYDC MOFs were synthesized by a hydrothermal strategy and featured good chemical and thermal stabilities, endowing them with the ability to work in harsh environments...
June 13, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28544414/effective-low-cost-recovery-of-toxic-arsenate-anions-from-water-using-hollow-sphere-trapper-geodes
#15
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/28541931/the-role-of-constructed-wetlands-for-biomass-production-within-the-water-soil-waste-nexus
#16
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/28538421/malnutrition-is-associated-with-hiv-infection-in-children-less-than-5-years-in-bobo-dioulasso-city-burkina-faso-a-case-control-study
#17
Ghislain Gnimbar Poda, Chien-Yeh Hsu, Jane C-J Chao
Pediatric human immunodeficiency virus (HIV) infection and malnutrition are still 2 major health issues in sub-Saharan Africa including Burkina Faso where few studies have been conducted on child malnutrition and HIV infection. This study assessed the effects of antiretroviral therapy (ART) in HIV infection and also compared the prevalence of malnutrition in terms of an inadequate diet, underweight, stunting, and wasting among HIV-infected and uninfected children less than 5 years in Bobo-Dioulasso city, Burkina Faso...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28526792/environmental-spread-of-ndm-1-producing-multi-drug-resistant-bacteria-in-dhaka-bangladesh
#18
Mohammad Aminul Islam, Moydul Islam, Rashedul Hasan, M Iqbal Hossain, Ashikun Nabi, Mahdia Rahman, Wil H F Goessens, Hubert P Endtz, Alexandria B Boehm, Shah M Faruque
Resistance to carbapenem antibiotics through the production of New Delhi Metallo-β-lactamase-1 (NDM-1) constitutes an emerging challenge in the treatment of bacterial infections. To monitor possible source of spread of these organisms in Dhaka, Bangladesh, we conducted comparative analysis of waste water samples from hospital adjacent areas (HAR) and from community areas (COM) as well as public tap water samples for the occurrence and characteristics of NDM-1 producing bacteria. Of 72 HAR samples tested 51 (71%) were positive for NDM-1-producing bacteria as evidenced by phenotypic tests and the presence of blaNDM-1 gene, compared to 5 of 41 (12...
May 19, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28506258/health-care-waste-management-in-community-based-care-experiences-of-community-health-workers-in-low-resource-communities-in-south-africa
#19
Lydia Hangulu, Olagoke Akintola
BACKGROUND: In South Africa, community health workers (CHWs) working in community-based care (CBC) programmes provide care to patients most of whom are living with HIV/AIDS and tuberculosis (TB). Although studies have shown that the caregiving activities provided by the CHWs generate health care waste (HCW), there is limited information about the experiences of CHWs on health care waste management (HCWM) in CBC. This study explored HCWM in CBC in Durban, South Africa from the perspectives CHWs...
May 15, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28495227/lab-scale-co-digestion-of-kitchen-waste-and-brown-water-for-a-preliminary-performance-evaluation-of-a-decentralized-waste-and-wastewater-management
#20
Maria Cristina Lavagnolo, Francesca Girotto, Osamu Hirata, Raffaello Cossu
An overall interaction is manifested between wastewater and solid waste management schemes. At the Laboratory of Environmental Engineering (LISA) of the University of Padova, Italy, the scientific and technical implications of putting into practice a decentralized waste and wastewater treatment based on the separation of grey water, brown water (BW - faecal matter) and yellow water (YW - urine) are currently undergoing investigation in the Aquanova Project. An additional aim of this concept is the source segregation of kitchen waste (KW) for subsequent anaerobic co-digestion with BW...
May 8, 2017: Waste Management
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