Unlabelled: A long-term monitoring of composition of landfill gases in the region with high rainfall was conducted using an argon assay in order to discuss air intrusion into the dump site. Gas samples were taken from vertical gas monitoring pipes installed along transects at two sections (called new and old) of an abandoned waste dump site in Sri Lanka. NO concentrations varied especially widely, by more than three orders of magnitude (0.046-140 ppmv). The nitrogen/argon ratio of landfill gas was normally higher than that of fresh air, implying that denitrification occurred in the dump site. Argon assays indicate that both N and NO production occurred inside waste and more significantly in the old section. The Ar assay would help for evaluations of NO emission in developing countries.
Implications: A long-term monitoring of composition of landfill gases in the region with high rainfall was conducted using an argon assay in order to discuss air intrusion into the dump site. Argon assays indicate that both N and NO production occurred inside waste and more significantly in the old section.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1080/10962247.2016.1212746 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Environmental impact assessment of SONARA's oil sludge landfill in BATOKE, south-west Cameroon.
Heliyon
November 2024
School of Geology and Mining Engineering, Univerity of Ngaoundéré, P.O. Box 115, Meiganga, Cameroon.
The focus of this study was to assess the environmental impact of the BATOKE oil sludge dump. A field visit was conducted to evaluate the condition of the site, followed by the sampling of oil sludge, BATOKE river water, soil, and locally grown manioc and macabo tubers. Subsequent physico-chemical characterization revealed parameters such as pH, electrical conductivity, total hydrocarbons, COD, BOD5, TSS, major cations and anions, as well as heavy metals including iron, copper, zinc, nickel, chromium, lead, cadmium, mercury, arsenic, calcium, potassium, titanium, zirconium, and rubidium.
View Article and Find Full Text PDFEmerging investigator series: open dumping and burning: an overlooked source of terrestrial microplastics in underserved communities.
Environ Sci Process Impacts
November 2024
School of Civil & Environmental Engineering, Oklahoma State University, 248 Engineering North, Stillwater 74078, Oklahoma, USA.
Open dumping and burning of solid waste are widely practiced in underserved communities lacking access to solid waste management facilities; however, the generation of microplastics from these sites has been overlooked. We report elevated concentrations of microplastics (MPs) in soil of three solid waste open dump and burn sites: a single-family site in Tuttle, Oklahoma, USA, and two community-wide sites in Crow Agency and Lodge Grass, Montana, USA. We extracted, quantified, and characterized MPs from two soil depths (0-9 cm and 9-18 cm).
View Article and Find Full Text PDFStructural analysis of dUTPase from Helicobacter pylori reveals unusual activity for dATP.
Int J Biol Macromol
December 2024
Structural Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India. Electronic address:
Helicobacter pylori deoxyuridine triphosphate nucleotidohydrolase (HpdUTPase) is a key enzyme in the synthesis of the thymidine nucleotide pathway. It catalyzes the hydrolysis of dUTP to dUMP and releases pyrophosphate. This enzyme has been shown to be essential in several pathogenic organisms.
View Article and Find Full Text PDFLong-term coastal dynamics: The evolution of a mixed sediment mega-nourishment consisting of colliery spoil.
J Environ Manage
December 2024
School of Engineering, Newcastle University, Newcastle Upon Tyne, UK.
Mega-nourishments, where large volumes of sediment are deposited on coastlines, are increasingly employed to manage shoreline erosion, yet our understanding of their long-term behaviour is limited by the fact that most current schemes are less than 15 years old. However, on the County Durham coast, 39 million m of coal spoil was tipped onto beaches between the late 1800s and 1993, acting as a de facto mixed sediment mega-nourishment. Our findings reveal key insights into the long-term dynamics of mega-nourishment schemes, including evidence of effective sediment dispersal around headlands into normally disconnected units of coast.
View Article and Find Full Text PDFRecovery of compaction resources in internal dump of gently inclined composite coal seam open-pit mine.
Sci Rep
October 2024
Inner Mongolia Coal Mine Design and Research Institute Co., Ltd., Hohhot, 010000, China.
In the production and construction process of a slowly inclined composite coal seam surface mine in China, the problem of coal compression by the non-working slope is common, but the research on coal recovery is usually conducted for the end slope compression problem. Due to the small economic and reasonable stripping ratio in the early stage of infrastructure construction in an open-pit mine, the buried deep coal seam has not yet been mined and is covered by internal dumping. In recent years, with the gradual increase of the economic and reasonable stripping ratio, the mining of coal seam covered by internal dumping site has become feasible.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!