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81.
Sheng-Fu Yang Wen-Tung Chiu To-Mai Wang Ching-Ting Chen Chin-Ching Tzeng 《Waste management (New York, N.Y.)》2014,34(6):1079-1084
This study presents a novel thermal plasma melting technique for neutralizing and recycling municipal solid waste incinerator (MSWI) ash residues. MSWI ash residues were converted into water-quenched vitrified slag using plasma vitrification, which is environmentally benign. Slag is adopted as a raw material in producing porous materials for architectural and decorative applications, eliminating the problem of its disposal. Porous materials are produced using water-quenched vitrified slag with Portland cement and foaming agent. The true density, bulk density, porosity and water absorption ratio of the foamed specimens are studied here by varying the size of the slag particles, the water-to-solid ratio, and the ratio of the weights of the core materials, including the water-quenched vitrified slag and cement. The thermal conductivity and flexural strength of porous panels are also determined. The experimental results show the bulk density and the porosity of the porous materials are 0.9–1.2 g cm?3 and 50–60%, respectively, and the pore structure has a closed form. The thermal conductivity of the porous material is 0.1946 W m?1 K?1. Therefore, the slag composite materials are lightweight and thermal insulators having considerable potential for building applications. 相似文献
82.
Subhas K. Venayagamoorthy Hyeyun Ku Oliver B. Fringer Alice Chiu Rosamond L. Naylor Jeffrey R. Koseff 《Environmental Fluid Mechanics》2011,11(4):329-352
Marine aquaculture is expanding rapidly without reliable quantification of effluents. The present study focuses on understanding
the transport of dissolved wastes from aquaculture pens in near-coastal environments using the hydrodynamics code SUNTANS
(Stanford Unstructured Nonhydrostatic Terrain-following Adaptive Navier–Stokes Simulator), which employs unstructured grids
to compute flows in the coastal ocean at very high resolution. Simulations of a pollutant concentration field (in time and
space) as a function of the local environment (bathymetry), flow conditions (tides and wind-induced currents), and the location
of the pens were performed to study their effects on the evolution of the waste plume. The presence of the fish farm pens
cause partial blockage of the flow, leading to the deceleration of the approaching flow and formation of downstream wakes.
Results of both the near-field area (area within 10 to 20 pen diameters of the fish-pen site) as well as far-field behavior
of the pollutant field are presented. These detailed results highlight for the first time the importance of the wake vortex
dynamics on the evolution of the near-field plume as well as the rotation of the earth on the far-field plume. The results
provide an understanding of the impact of aquaculture fish-pens on coastal water quality. 相似文献
83.
Yeo Jerome Song Koting Suhana Onn Chiu Chuen Mo Kim Hung 《Environmental science and pollution research international》2021,28(23):29009-29036
Environmental Science and Pollution Research - Paving block is a widely used pavement material due to its long service life, fast and easy production and easily replaced for maintenance purpose.... 相似文献
84.
Lu Liang Chun Chiu Shih-Yung Chiu Yung-Ho Chang Tzu-Han Tang William 《Environmental science and pollution research international》2022,29(29):44162-44174
Environmental Science and Pollution Research - This paper applies the modified undesirable dynamic data envelopment analysis (DEA) model by considering the role of forest carbon sinks to evaluate... 相似文献
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Yishu Chiu William Guey-Lee 《Journal of the American Water Resources Association》1977,13(6):1203-1214
ABSTRACT: A model consisting of closed water reuse and productive use of various types of wastes for energy generation is presented. The sewage after treatment would be used as the cooling water for power plants, and the condenser discharge therefrom be used as heating water for sludge digesters. The water is then purified for municipal water supply for continuous use. The advantages of this system are that water resources and energy are conserved while various types of wastes including waste heat are controlled. With a preliminary system analysis, it appears that the design for power plant based on the total heating value of wastes and digester capacity based on sewage sludge generation is feasible in terms of acquisition and full utilization of various types of wastes as generated in a single metropolitan area. The system as shown in this design is in balance among various factors such as the generation rate of municipal refuse, municipal sewage, waste heat in the condenser discharge, and raw sewage sludge. 相似文献