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Bio-oxidation of methane in a landfill environment is important for mitigating global methane emissions into the atmosphere. In the present study, the characteristics of methane bio-oxidation and methane-oxidizing microorganisms were studied by enrichment cultivation using fresh and aged leachate (collected from Qizishan Landfill, Suzhou, China). Both aerobic and anaerobic methane oxidation were detected,...
As energy crises and environmental pollution become increasingly prominent, people are beginning to explore the ocean to exploit its renewable energy. Based on hydrodynamic principles, an analytical model for unstable hydrofoil motion has been developed. The software ANSYS Fluent was employed to perform a simulation of hydrofoil motion, and the effect of hydrofoil motion on the surrounding flow field...
Ecological risks of heavy metal toxicity such as Cd, Cu, Pb, Zn, Cr, As, and Hg through crops (wheat and rice) grown in the Tianjin sewage irrigation area in northern China were studied in this paper. Wheat and rice samples as well as related soil samples from 77 select blocks were collected. The second grade of standards for Tianjin soil environmental quality was used for soil risk assessment. Chinese...
Five species of beans were chosen to observe the effects of intermittent periods and doses of cell phone electromagnetic field radiation (EMR) on germination seeds. Beans were grown under the same environment and the EMR was different. The treatment included two intermittent periods (4 and 24 h) and three radiation intensities (high, low, and check). The frequency of EMR was 1805-1850 MHz. The mean...
This study investigated heavy metals in soils and agricultural products near an industrial district in Dongguan City. The concentrations of Cu, Zn, Pb, Cd, Hg, and As in soil and agricultural products from vegetable and banana fields were determined. Results indicated that except for Zn in one sample and Cd in five samples, the majority of the samples were notably enriched by heavy metals compared...
Water is a resource of increasing scarcity due to continual expansion of production. Many authors have focused on wastewater recycling for industry and municipal wastewater plants, but wastewater recycling at the community level still lacks a full discussion. This paper focuses on the issue involving only household wastewater recycling which is separated into graywater and blackwater by households...
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