• Advanced Green Technologies for Wastewater Treatment

     · Advanced green technologies are aimed to provide better sustainability through securing our societal needs without further damaging or depleting the remaining natural resources. This could be achieved through Recycling of manufactured goods and products. Decreasing waste and pollution by improving the behavior of human production and consumption.

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     · SHARING THE GREEN TECHNOLOGY GH SERIES DOUBLE-SHAFT SHEARING TYPE SHREDDER APPLICATION AREAS Waste Incineration Power Plant Tire shredding and recycling field Solid (Hazardous) shredding-MixPumping system Electronic Waste Crushing and Recovery System Fragmentation Biomass fuel pretreatment Various industrial wastes Hazardous Waste Disposal Plant

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  • Green technologySlideShare

     · WHAT IS GREEN TECHNOLOGY “Green Technology” is a system that uses innovative methods to create an environmental friendly products It uses renewable natural resources that never depletes, so future generation can also benefit from it. It can effectively change waste pattern and production in a way that it won’t harm the planet.

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  • Recovery of Gold from Incinerated Sewage Sludge Ash by

     · In a series of studies into the development of an efficient and selective recovery process for gold that eliminates the need for water, the release behavior of gold from an incinerated sewage sludge ash heated to between 100 and 1000 °C under a chlorine gas stream was investigated. A release of gold was observed above 600 °C, with all gold being transferred to the gas phase at 1000 °C.

  • A Review of Technology of Metal Recovery from Electronic Waste

     · Electronic waste, or e-waste, is an emerging problem with developed nations as with developing nations. In the absence of proper collection and disposal systems, awareness, and proper regulations, the problem is rather more acute in developing nations. These wastes are environmentally hazardous on one hand and valuable on the other. They contain substantial amount of metal value,

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     · A green technology for recovery of gold from non-metallic secondary sources Hydrometallurgy , 82 ( 2006 ) , pp. 4853 , 10.1016/J.HYDROMET.2006.01.004 Article Download PDF View Record in Scopus Google Scholar

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  • Making gold green New non-toxic method for mining gold

     · Making gold green New non-toxic method for mining gold. Scientists have struck gold in the laboratory. They have discovered an inexpensive and environmentally benign method that uses simple

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     · Waste newsprint paper was modified with dimethylamine (DMA) to obtain a tertiary amine type adsorption gel called DMA-paper gel. This new derivative was investigated for adsorption, from hydrochloric acid medium, of gold, palladium, and platinum as well as some base metals. The gel exhibited selectivity only for precious metals with a remarkably high capacity for Au(III), i.e., 4.6 mol/kg

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  • Hydrometallurgical Recovery of Metals from Large Printed

     · The recovery of precious metals from waste printed circuit boards (PCBs) is an effective recycling process. This paper presents a promising hydrometallurgical process to

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  • A world without waste how gold mining is going green

     · A world without waste how gold mining is going green. One tonne of e-waste contains more gold than 17 tonnes of ore, making it a rich alternative to traditional mining. Recycling precious metals and minerals from used electronics can help make today's consumption patterns more environmentally sustainable. About US$500 billion worth of natural

  • E-WASTE AN UNDERRATED HAZARDOUS WASTE IN INDONESIA

    Sukandar dan Widyarsana IMW.,(2009) Recycling of E waste in Indonesia by Informal Sector Case Study og Gold Recovery from E waste Component, Proceeding The Sixth NIES Workshop on E waste, Hokkaido-Japan,pp.151160. Sutarto, E., (2008), Identifikasi Pola Aliran E-waste Komputer Dan Komponennya Di Bandung, ITB Bandung

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  • Green Energy Reality Check It's Not as Clean as You Think

     · The Institute for Sustainable Futures at the University of Technology Sydney, Australia, cautions that a global gold rush for green minerals to meet ambitious plans could take miners into “some remote wilderness areas have maintained high biodiversity because they haven’t yet been disturbed.” And then there are the widely reportedly cases

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  • Challenges and opportunities in the recovery of gold from

    Rapid global technological development has led to the rising production of electronic waste that presents both challenges and opportunities in its recycling. In this review, we highlight the value of metal resources in the printed circuit boards (PCBs) commonly found in end-of-life electronics, the differences between primary (ore) mining applications and secondary (‘urban’) mining, and

  • Targeted Recovery of Ag-Pd Alloy from Polymetallic

     · Electronic waste (e-waste), as hazardous waste, is a promising secondary resource of precious metals. The extraction of precious metals from e-waste has great environmental and economic benefits. Cu 2 and Bi 3 can be recovered as Cu-Bi alloy by the green technology of electrodeposition [ ((Chen and Mao, 2011) Gold recovery using

  • Obsolete Computers, “Gold Mine,” or High-Tech Trash

     · 1Based on 1 troy ounce of gold recovered for every 3 t of electronic scrap (10.4 grams per metric ton (g/t)) and an average gold ore feed grade of 0.9 g/t for a typical gold openpit cyanide leaching operation in Nevada with an overall 67 percent gold recovery. 2Based on a 2.7 1 waste-to-ore ratio. U.S. Department of the Interior

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  • Review on Cyanogenic Bacteria for Gold Recovery from E-Waste

    Electronic waste (E-waste) is recognized as a new emerging and fast-growing waste stream, and may be considered as a secondary ore for the recovery of some precious metals (such as gold). A number of control technologies have been conducted for gold recovery, and in which, cyanidation is widely used. In recent years, an alternate approach to the gold cyanidation process is being considered, in

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  • Green Energy Reality Check It's Not as Clean as You Think

     · The Institute for Sustainable Futures at the University of Technology Sydney, Australia, cautions that a global gold rush for green minerals to meet ambitious plans could take miners into “some remote wilderness areas have maintained high biodiversity because they haven’t yet been disturbed.” And then there are the widely reportedly cases

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     · A novel porphyrin-based porous polymer, named COP-180, was recently introduced as a powerful adsorbent option, especially for gold, and in this study, aspects of desorption and recovery of adsorbed gold and regeneration of the polymer were investigated.

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     · Lee, H., Molstad, E. & Mishra, B. Recovery of gold and silver from secondary sources of electronic waste processing by thiourea leaching. JOM 70 ,

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