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Waste Management

Mei Wang, Ya Tang, Christopher W N Anderson, Paramsothy Jeyakumar, Jinyan Yang
Contamination of soil and water with fluorine (F) leached from phosphogypsum (PG) stacks is a global environmental issue. Millions of tons of PG is produced each year as a by-product of fertilizer manufacture, and in China, weathering is exacerbated by acid rain. In this work, column leaching experiments using simulated acid rain were run to evaluate the mobility of F and the impact of weathering on native bacterial community composition in PG. After a simulated summer rainfall, 2.42-3.05 wt% of the total F content of PG was leached and the F concentration in leachate was above the quality standard for surface water and groundwater in China...
March 21, 2018: Environmental Science and Pollution Research International
A Leiva, F Granados-Chinchilla, M Redondo-Solano, M Arrieta-González, E Pineda-Salazar, A Molina
Animal by-product rendering establishments are still relevant industries worldwide. Animal by-product meal safety is paramount to protect feed, animals, and the rest of the food chain from unwanted contamination. As microbiological contamination may arise from inadequate processing of slaughterhouse waste and deficiencies in good manufacturing practices within the rendering facilities, we conducted an overall establishment's inspection, including the product in several parts of the process.An evaluation of the Good Manufacturing Practices (GMP) was carried out, which included the location and access (i...
March 19, 2018: Poultry Science
Ana Quintáns-Fondo, Vanesa Santás-Miguel, Juan C Nóvoa-Muñoz, Manuel Arias-Estévez, María J Fernández-Sanjurjo, Esperanza Álvarez-Rodríguez, Avelino Núñez-Delgado
The purpose of this work was to elucidate the repercussion of changing pH, incubation time and As(V) competition on fluoride (F- ) sorption on forest and vineyard soil samples, pyritic, and granitic materials, as well as on the by-products pine sawdust, oak wood ash, mussel shell ash, fine and coarse mussel shell, and slate processing waste fines. To reach this end, the methodological approach was based on batch-type experiments. The results indicate that, for most materials, F- sorption was very high at the start, but was clearly diminished when the pH value increased...
2018: Frontiers in Chemistry
Lamri Naidja, Hocine Ali-Khodja, Salah Khardi
In order to assess the significance of PM in ambient air, it is necessary to evaluate their physical and chemical characteristics as well as identify their major emission sources. On a global scale, particulate matter in the atmosphere arises mainly from the combustion process of motorized vehicles, but natural sources are still considered as the major contributors. In Africa, PM emissions differ from those in developed countries; human activities such as biomass burning in households, poor household waste management, and the high number of diesel-powered vehicles are the predominant anthropogenic sources...
March 19, 2018: Environmental Science and Pollution Research International
Renju Rajan, Delvin T Robin, Vandanarani M
Biomedical waste management is an integral part of traditional and contemporary system of health care. The paper focuses on the identification and classification of biomedical wastes in Ayurvedic hospitals, current practices of its management in Ayurveda hospitals and its future prospective. Databases like PubMed (1975-2017 Feb), Scopus (1960-2017), AYUSH Portal, DOAJ, DHARA and Google scholar were searched. We used the medical subject headings 'biomedical waste' and 'health care waste' for identification and classification...
March 16, 2018: Journal of Ayurveda and Integrative Medicine
Kai Zhang, Huahong Shi, Jinping Peng, Yinghui Wang, Xiong Xiong, Chenxi Wu, Paul K S Lam
The pollution of marine environments and inland waters by plastic debris has raised increasing concerns worldwide in recent years. China is the world's largest developing country and the largest plastic producer. In this review, we gather available information on microplastic pollution in China's inland water systems. The results show that microplastics are ubiquitous in the investigated inland water systems, and high microplastic abundances were observed in developed areas. Although similar sampling and analytical methods were used for microplastic research in inland water and marine systems, methods of investigation should be standardized in the future...
March 13, 2018: Science of the Total Environment
Mingguo Zheng
Sediment rating curves have long been used as a tool for predicting sediment yield. In this study, the spatial and temporal variations of rating curves were examined in the loess area (~15,000km2 ) of the Wuding River basin of the Chinese Loess Plateau. Data of mean daily water discharge per unit area, Qd (m3 s-1 km2 ), and mean daily sediment discharge per unit area, SDd (kgs-1 km2 ), were compiled for three periods of 1959-1971, 1972-1989, and 2006-2013. Soil conservation measures were rarely implemented for the pre-1971 period but were intensively implemented for the latter periods...
March 3, 2018: Science of the Total Environment
S S Chung, J S Zheng, S R Burket, B W Brooks
Though antibiotic resistance (ABR) represents a major global health threat, contributions of landfill leachate to the life cycle of antibiotics and ABR development are poorly understood in rapidly urbanizing regions of developing countries. We selected one of the largest active landfills in Asia and two landfills that have been closed for 20 years to examine antibiotic occurrences in leachates and associated hazards during wet and dry season sampling events. We focused on some of the most commonly used human antibiotics in Hong Kong, one of the most populous Asian cities and the fourth most densely populated cities in the world...
March 15, 2018: Environment International
O O Ojuri, F O Ayodele, O E Oluwatuyi
Management of the ever-increasing generated solid waste had been a difficulty for state governments in Nigeria. The high costs connected to this waste management which had encumbered the state budget, ignorance or lack of understanding of resourceful waste management and insensitivity to environmental concerns may have led to partial neglect of this sector. This research paper is aimed at evaluating the rehabilitation potential and the risk level of Igbatoro dumpsite, an Ondo state-managed waste dumpsite which predominantly receives the waste of Akure and its environs...
March 13, 2018: Waste Management
Alex Y Lo, Shuwen Liu
Many high-density cities struggle to find space for disposing municipal solid waste. Hong Kong is one of these cities, seeking to scale up waste recovery efforts as an alternative to disposal. However, territory-wide recovery initiatives do not account for socio-economic variations across place, leading to mixed outcomes among diverse communities. This study aims to investigate socio-economic effects on recycling behavior in a sample of subsidized rental housing estates. It constitutes an improvement from previous studies by using the entire estate as a unit of analysis and analyzing actual recycling outcomes, which have received limited attention from researchers...
March 13, 2018: Journal of Environmental Management
Christine Prouty, Shima Mohebbi, Qiong Zhang
Given the increasing vulnerability of communities to the negative impacts of untreated wastewater, resource recovery (RR) systems provide a paradigm shift away from a traditional approach of waste separation and treatment towards a productive recovery of water, energy and nutrients. The aim of this research is to understand the relationships between factors that influence the adoption and sustainability of wastewater-based RR systems to inform technology implementation strategies. The study presents a theory-informed, community-influenced system dynamics (SD) model to provide decision-makers with an adaptable tool that simulates system-level responses to the strategies that are developed for the coastal town of Placencia, Belize...
March 7, 2018: Water Research
Lei Liu, Jun Ma, Qiang Xue, Jingbang Shao, Yijun Chen, Gang Zeng
The optimization design of well spacing (WS) and aeration rate (AR) is crucial to the in situ aeration system operation in under long-term and high-efficiency conditions. This optimization design aims to transport additional air into landfills and to develop an improved oxygen environment for enhancing aerobic degradation. Given the specific pore structure distribution within landfills, providing sufficient oxygen in all waste bodies in field sites through gas wells is difficult. The design of well distribution also lacks adequate criteria...
March 12, 2018: Waste Management
Audrius Gegeckas, Aistė Šimkutė, Renata Gudiukaitė, Donaldas Jonas Čitavičius
Solid keratin-rich waste management is one of essential research area in nowadays. Conventional chemical and high thermal keratin waste decomposition methods are fully explored and not enough effective for future biotechnology perspectives. However, traditional keratin-rich waste decomposition methods could be replaced by environmentally-friendly and economical microbial keratin waste biodegradation methods without energy wastage and essential amino acids and nutrition elements loss. In this study BPKer and BAKer keratinolytic peptidases from Bacillus sp...
March 12, 2018: International Journal of Biological Macromolecules
Eko Prasetyo Kuncoro, Thin Soedarti, Trisnadi Widyaleksono Catur Putranto, Handoko Darmokoesoemo, Nanda Rizki Abadi, Heri Septya Kusuma
The usage of wastes of algae would be admirable from environmental and solid waste management point of view. Thus, herein, this data set present a facile method for providing an adsorbent from mixture of algae waste-bentonite. The prepared adsorbent was applied to remove Pb2+ from aqueous solution. The characterization data of the adsorbent were analyzed using FTIR and SEM-EDX methods. The FTIR test results showed that there is a shift in the wave numbers on the adsorbent that has been loaded with Pb indicating that there is an interaction between the adsorbent and Pb...
February 2018: Data in Brief
Rashmi Agarwalla, Rambha Pathak, Mitasha Singh, Farzana Islam, Mamta Parashar
Background: Ragpickers are informal workers who collect recyclable materials to earn a small wage on daily basis. They work in vulnerable conditions and awareness regarding occupational and environmental hazard is essential for them. Objective: To study the effectiveness of awareness program on various occupational health hazards among the ragpickers. Materials and Methods: This interventional study was conducted from May through October 2016 among the ragpickers living near field practice area of Department of Community Medicine and those living in slum areas around HAHC Hospital, New Delhi, India...
May 2017: Indian Journal of Occupational and Environmental Medicine
D Cano-Terriza, M A Risalde, S Jiménez-Ruiz, J Vicente, J Isla, J Paniagua, I Moreno, C Gortázar, J A Infantes-Lorenzo, I García-Bocanegra
In recent decades, habitat change and the intensive management of wild ungulates for hunting have led to an increase in their populations in south-central Spain. This implies a higher generation of hunting waste, which can favour the transmission of infectious diseases, including tuberculosis (TB). The aim of this study was to assess the usefulness of the proper disposal of hunting waste as TB control measure in wild boar (Sus scrofa) and red deer (Cervus elaphus) during the 2008/2009 to 2016/2017 hunting seasons...
March 13, 2018: Transboundary and Emerging Diseases
Juan Zamora-Sillero, Adem Gharsallaoui, Carlos Prentice
The inadequate management of fish processing waste or by-products is one of the major problems that fish industry has to face nowadays. The mismanagement of this raw material leads to economic loss and environmental problems. The demand for the use of these by-products has led to the development of several processes in order to recover biomolecules from fish by-products. An efficient way to add value to fish waste protein is protein hydrolysis. Protein hydrolysates improve the functional properties and allow the release of peptides of different sizes with several bioactivities such as antioxidant, antimicrobial, antihypertensive, anti-inflammatory, or antihyperglycemic among others...
March 13, 2018: Marine Biotechnology
Gavin G Cotterill, Paul C Cross, Eric K Cole, Rebecca K Fuda, Jared D Rogerson, Brandon M Scurlock, Johan T du Toit
Providing food to wildlife during periods when natural food is limited results in aggregations that may facilitate disease transmission. This is exemplified in western Wyoming where institutional feeding over the past century has aimed to mitigate wildlife-livestock conflict and minimize winter mortality of elk ( Cervus canadensis ). Here we review research across 23 winter feedgrounds where the most studied disease is brucellosis, caused by the bacterium Brucella abortus Traditional veterinary practices (vaccination, test-and-slaughter) have thus far been unable to control this disease in elk, which can spill over to cattle...
May 5, 2018: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
Sarah King, Céline Miani, Josephine Exley, Jody Larkin, Anne Kirtley, Rupert A Payne
BACKGROUND: Long-term conditions place a substantial burden on primary care services, with drug therapy being a core aspect of clinical management. However, the ideal frequency for issuing repeat prescriptions for these medications is unknown. AIM: To examine the impact of longer-duration (2-4 months) versus shorter-duration (28-day) prescriptions. DESIGN AND SETTING: Systematic review of primary care studies. METHOD: Scientific and grey literature databases were searched from inception until 21 October 2015...
March 12, 2018: British Journal of General Practice: the Journal of the Royal College of General Practitioners
Lucia Rigamonti, Monia Niero, Melanie Haupt, Mario Grosso, Jáchym Judl
No abstract text is available yet for this article.
March 9, 2018: Waste Management
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