Recycling of Hazardous Solid Waste Material Using High-Temperature Solar Process Heat. 1. Thermodynamic Analysis

2000 ◽  
Vol 34 (19) ◽  
pp. 4177-4184 ◽  
Author(s):  
Beatrice Schaffner ◽  
Wolfgang Hoffelner ◽  
Haiyan Sun ◽  
Aldo Steinfeld
Keyword(s):  
High Temperature ◽  
Solid Waste ◽  
Thermodynamic Analysis ◽  
Waste Material ◽  
Process Heat ◽  
Hazardous Solid Waste

Recycling of Hazardous Solid Waste Material Using High-Temperature Solar Process Heat. 2. Reactor Design and Experimentation

2003 ◽  
Vol 37 (1) ◽  
pp. 165-170 ◽  
Author(s):  
Beatrice Schaffner ◽  
Anton Meier ◽  
Daniel Wuillemin ◽  
Wolfgang Hoffelner ◽  
Aldo Steinfeld
Keyword(s):  
High Temperature ◽  
Solid Waste ◽  
Reactor Design ◽  
Waste Material ◽  
Process Heat ◽  
Hazardous Solid Waste

Modelling heavy metal mobilisation in solid waste deposits - a predictive tool for environmental risk assessment

1999 ◽  
Vol 39 (10-11) ◽  
pp. 193-196
Author(s):  
J. Petersen ◽  
J. G. Petrie
Keyword(s):  
Heavy Metal ◽  
Solid Waste ◽  
Environmental Risk ◽  
Mechanistic Model ◽  
Small Sample ◽  
Waste Material ◽  
Metal Species ◽  
Model Parameters ◽  
Assessment Methodology ◽  
Predictive Tool

The release of heavy metal species from deposits of solid waste materials originating from minerals processing operations poses a serious environmental risk should such species migrate beyond the boundaries of the deposit into the surrounding environment. Legislation increasingly places the liability for wastes with the operators of the process that generates them. The costs for long-term monitoring and clean-up following a potential critical leakage have to be factored in the overall project plan from the outset. Thus assessment of the potential for a particular waste material to generate a harmful leachate is directly relevant for estimating the environmental risk associated with the planned disposal operation. A rigorous mechanistic model is proposed, which allows prediction of the time-dependent generation of a leachate from a solid mineral waste deposit. Model parameters are obtained from a suitably designed laboratory waste assessment methodology on a relatively small sample of the prospective waste material. The parameters are not specific to the laboratory environment in which they were obtained but are valid also for full-scale heap modelling. In this way the model, combined with the assessment methodology, becomes a powerful tool for meaningful assessment of the risks associated with solid waste disposal strategies.

scholarly journals An Experimental Study on the Melting Solidification of Municipal Solid Waste Incineration Fly Ash

2021 ◽  
Vol 13 (2) ◽  
pp. 535
Author(s):  
Jing Gao ◽  
Tao Wang ◽  
Jie Zhao ◽  
Xiaoying Hu ◽  
Changqing Dong
Keyword(s):  
Heavy Metals ◽  
High Temperature ◽  
Fly Ash ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Liquid Slag ◽  
Melting Process ◽  
Waste Incineration ◽  
Municipal Solid Waste Incineration ◽  
Mswi Fly Ash

Melting solidification experiments of municipal solid waste incineration (MSWI) fly ash were carried out in a high-temperature tube furnace device. An ash fusion temperature (AFT) test, atomic absorption spectroscopy (AAS), scanning electron microscope (SEM), and X-ray diffraction (XRD) were applied in order to gain insight into the ash fusibility, the transformation during the melting process, and the leaching behavior of heavy metals in slag. The results showed that oxide minerals transformed into gehlenite as temperature increased. When the temperature increased to 1300 °C, 89 °C higher than the flow temperature (FT), all of the crystals transformed into molten slag. When the heating temperatures were higher than the FT, the volatilization of the Pb, Cd, Zn, and Cu decreased, which may have been influenced by the formation of liquid slag. In addition, the formation of liquid slag at a high temperature also improved the stability of heavy metals in heated slag.

scholarly journals The Management of Hazardous Solid Waste in India: An Overview

Environments ◽  
2018 ◽  
Vol 5 (9) ◽  
pp. 103 ◽  
Author(s):  
Leelavathy Karthikeyan ◽  
Venkatesan Suresh ◽  
Vignesh Krishnan ◽  
Terry Tudor ◽  
Vedha Varshini
Keyword(s):  
Economic Development ◽  
Solid Waste ◽  
Hazardous Waste ◽  
The State ◽  
Hazardous Waste Management ◽  
Governance Systems ◽  
Treatment Facilities ◽  
Hazardous Solid Waste ◽  
Adaptive Technologies ◽  
Mega Cities

Due largely to economic development, industrialization, and changing lifestyles, quantity of hazardous waste in India is rising significantly. This is particularly true in mega cities, where populations are large and growing. Due to a range of factors including limitations in governance systems, inadequate treatment facilities, limitations in compliance and regulation, and limited trained and skilled stakeholders, the management of hazardous solid waste in the country is largely ineffective. One exception to this is the State of Gujarat, which has sought to implement a number of strategies to better manage the rising quantities of hazardous solid waste being produced. This article highlights the management of solid waste in the country for an effective mitigation of various hazards. Further, this article focused on adaptive technologies for the hazardous waste management all over the country more specifically in the state of Gujarat.

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