Heavy Metals Behavior in Combustion Flue Gases and Emission Control of Heavy Metals
© WtERT Germany GmbH (10/2010)
© WtERT Germany GmbH (10/2010)
Utilization of BFR plastics in recovery of valuable metals during thermal treatment with solid wastes
© WtERT USA , Columbia University, Earth Engineering Center (10/2010)
© WtERT USA , Columbia University, Earth Engineering Center (10/2010)
A New CFB incineration technology for power generation
© WtERT USA , Columbia University, Earth Engineering Center (10/2010)
© WtERT USA , Columbia University, Earth Engineering Center (10/2010)
The long arm of the East: China keen to get hold of German electronic scrap
© Deutscher Fachverlag (DFV) (6/2010)
In future, energy and resource efficiency, as well as principles of closed loop recycling management will set the political agenda more than short-term economic growth. Germany is more than just a role model -- it will also be attractive as a supplier of raw materials for the Middle Kingdom.
© Deutscher Fachverlag (DFV) (6/2010)
In future, energy and resource efficiency, as well as principles of closed loop recycling management will set the political agenda more than short-term economic growth. Germany is more than just a role model -- it will also be attractive as a supplier of raw materials for the Middle Kingdom.
Low point of the recession now overcome: The steel sector is recovering
© Deutscher Fachverlag (DFV) (6/2010)
The Chinese steel sector is recovering from the recession, at least for the time being. Since hitting rock bottom in mid-November 2008, prices have significantly recovered, the warehouses have reduced their excess stock, and companies are hoping that the government’s infrastructure programme will help them overcome the crisis, reports the ‘Asien Kurier’ in its March edition. The steel recycling sector will also benefit from the upswing.
© Deutscher Fachverlag (DFV) (6/2010)
The Chinese steel sector is recovering from the recession, at least for the time being. Since hitting rock bottom in mid-November 2008, prices have significantly recovered, the warehouses have reduced their excess stock, and companies are hoping that the government’s infrastructure programme will help them overcome the crisis, reports the ‘Asien Kurier’ in its March edition. The steel recycling sector will also benefit from the upswing.
Reliable identification of conductive metals: Sorting metals with no optical aids
© Deutscher Fachverlag (DFV) (6/2010)
The EX900 sorting unit, manufactured by Exsor GmbH, is a completely new development in the field of fully automatic, sensor-aided metal sorting. It can accurately recognise and sort out electrically-conducting materials, has a throughput of up to 60 tons per hour for slag and has an intelligent automation concept with freely selectable sorting and metal programs. Thanks to the PROFIBUS automation concept it is possible to control, monitor and visualise all assembly groups and subsystems universally and modularly, while the system can be extended almost infinitely.
© Deutscher Fachverlag (DFV) (6/2010)
The EX900 sorting unit, manufactured by Exsor GmbH, is a completely new development in the field of fully automatic, sensor-aided metal sorting. It can accurately recognise and sort out electrically-conducting materials, has a throughput of up to 60 tons per hour for slag and has an intelligent automation concept with freely selectable sorting and metal programs. Thanks to the PROFIBUS automation concept it is possible to control, monitor and visualise all assembly groups and subsystems universally and modularly, while the system can be extended almost infinitely.
Valorization of recycled material into Ni-based composites
© Aristotle University of Thessaloniki (6/2009)
The recycling of waste towards valuable materials and their utilization into metal-based composites represents an important field of study. The composite industry nowadays prioritizes environmental improvements as much as other composite properties. In the present research, Ni powder was produced from the recycling of metallic waste, a low cost and largely available material, by an attractive hydrometallurgical recovery process.
© Aristotle University of Thessaloniki (6/2009)
The recycling of waste towards valuable materials and their utilization into metal-based composites represents an important field of study. The composite industry nowadays prioritizes environmental improvements as much as other composite properties. In the present research, Ni powder was produced from the recycling of metallic waste, a low cost and largely available material, by an attractive hydrometallurgical recovery process.
ROOT EXUDATIONS OF PLANTS ON INCINERATION ASH
© IWWG International Waste Working Group (10/2007)
Municipal waste generation in Germany has remained more or less constant during the last ten years. In 2004 an amount of 587 kg of municipal waste per inhabitant was produced and 13.88 million tons of municipal wastes were incinerated in Germany. Since the deposition of organic rich waste is largely restricted in Germany since June 2005, lager amounts of bottom ashes from MSWI have to be expected. During the process of municipal waste incineration 25-33% of the original mass of municipal waste accumulates normally as bottom ash.
© IWWG International Waste Working Group (10/2007)
Municipal waste generation in Germany has remained more or less constant during the last ten years. In 2004 an amount of 587 kg of municipal waste per inhabitant was produced and 13.88 million tons of municipal wastes were incinerated in Germany. Since the deposition of organic rich waste is largely restricted in Germany since June 2005, lager amounts of bottom ashes from MSWI have to be expected. During the process of municipal waste incineration 25-33% of the original mass of municipal waste accumulates normally as bottom ash.
RECOVERY OF METAL HYDROXIDE SLUDGE FOR RECYCLING IN THE AOD CONVERTER
© IWWG International Waste Working Group (10/2007)
Surface treatment of stainless steel products comprises annealing followed by pickling. An oxide layer over a chromium-depleted layer is formed during the annealing, and these two layers are removed by pickling with acids. The most commonly used pickling acids at AB SMT are nitric acid (HNO3), hydrofluoric acid (HF), hydrochloric acid (HCl), and phosphoric acid (H3PO4). After pickling, the steel products are washed with water. The used pickling acids and the wastewater contain large amounts of valuable metal ions. The liquids are sent to the waste water treatment plant where they are neutralized with lime. The free metal ions precipitate and metal hydroxide sludge is generated, together with the formation of CaF2.
© IWWG International Waste Working Group (10/2007)
Surface treatment of stainless steel products comprises annealing followed by pickling. An oxide layer over a chromium-depleted layer is formed during the annealing, and these two layers are removed by pickling with acids. The most commonly used pickling acids at AB SMT are nitric acid (HNO3), hydrofluoric acid (HF), hydrochloric acid (HCl), and phosphoric acid (H3PO4). After pickling, the steel products are washed with water. The used pickling acids and the wastewater contain large amounts of valuable metal ions. The liquids are sent to the waste water treatment plant where they are neutralized with lime. The free metal ions precipitate and metal hydroxide sludge is generated, together with the formation of CaF2.
RECYCLING OF SPENT NI-MH BATTERIES FOR RECOVERY OF SOME HEAVY METALS
© IWWG International Waste Working Group (10/2007)
Recycling of spent nickel-metal hydride batteries is categorized one of the public service tasks of the human communities. This is to comply with the constraints raised by the Law and related legislations assigned for the environment protection against hazardous wastes. The world demand of metals is progressively increasing meanwhile primary resources are depleting. Recovery of metals of concern from secondary resources would partly satisfy such world demand. Conventional rechargeable batteries often fail the needs of consumers and equipment designers in terms of their size and weight, operating time of-use, availability and environmental acceptability. Lupe, C., and Pilone D. 2002 showed that a type of sealed nickel-metal hydride battery is one offering significant improvements over conventional rechargeable batteries.
© IWWG International Waste Working Group (10/2007)
Recycling of spent nickel-metal hydride batteries is categorized one of the public service tasks of the human communities. This is to comply with the constraints raised by the Law and related legislations assigned for the environment protection against hazardous wastes. The world demand of metals is progressively increasing meanwhile primary resources are depleting. Recovery of metals of concern from secondary resources would partly satisfy such world demand. Conventional rechargeable batteries often fail the needs of consumers and equipment designers in terms of their size and weight, operating time of-use, availability and environmental acceptability. Lupe, C., and Pilone D. 2002 showed that a type of sealed nickel-metal hydride battery is one offering significant improvements over conventional rechargeable batteries.
