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22 Sep 2009

dell laptop battery pollution not only caused enormous damage to the environment in which the precious metals also dropped a huge waste of resources. At the recent Association of China to scientific journals and the news media by the Beijing Institute of Technology, Associate Professor of Chemical Engineering and Environmental Sciences, written by Xin Bao-ping, "in Lithium-ion battery scrap precious metals, cobalt bioleaching "mechanism has attracted participants were concerned. The paper, published in "Science Bulletin" in 2008 at No. 23.

      It is understood that use lithium-ion compaq evo n400c battery is currently the largest secondary batteries, which contain cobalt in the market in recent years has reached 75 ~ 90 yuan / ton, the dissolution of cobalt and recycling of used lithium battery ion were treated with hot topics. XIN Bao-ping in his paper discussed the lithium-ion battery scrap cobalt bioleaching mechanism, revealing the impact of such energy matrix cobalt leaching efficiency of underlying causes.

      Experts say the use of bio-leaching refers to the specific micro-organisms or their metabolic products of oxidation, reduction, complexation, adsorption, or dissolution, the solid-phase extraction of some insoluble components of a technology. In recent years, bioleaching ore toshiba pa3178u-1brs battery metallurgical products in the low soil remediation contaminated by heavy metals, sewage sludge and hazardous fly ash removal of heavy metals detoxification and many other aspects to be studied in depth.

      The achievement is more clearly illustrates the dissolution of cobalt in the mechanism of the ibm thinkpad t41 battery  and micro-organisms in the process of leaching effect on the mechanism of bio-leaching technology has inspired and supplements, but also for the introduction of organic -leaching technology, dealing with pollution of the battery provides a theoretical study of lithium battery recycling valuable resources for a standard value.

      To address the meeting, six scientific journals and technology for media recommended that results of the last eight items. The first author, China Land Surveying and Planning Institute engineers to finish their thesis, following the industry, plastic film mulching on crop yield, "says the first time, plastic film mulching on yield crops more harm than good.

      The article notes: Because of mulching techniques can improve the land resources, efficient use of water to achieve increased crop yields, and therefore widely used in recent years. Since 1994, China's average annual mulching the area jumped 66 million hectares in 2005 mulching area has reached over 13 million hectares. However, with the plastic film aging, crushing and recycling incomplete, and its residue fields are very common.

      As the main component is polyolefin plastic compounds in natural conditions are extremely difficult to degrade in the soil may be remnants from 200 to 400 years and persist in soil in plastic film severely affected crop growth and root development , water and fertilizer transported shift, causing loss of crops.

      Therefore, by examining the effect of mulching technology to increase apple a1148 battery production at the same time, but also lead to a high degree of attention to their residual side effects. Comprehensive review of the effects of two aspects to ensure the sustainable use of film to achieve sustainable agricultural development.

      China Aerospace Science and Technology Institute of Space Technology Group Commander Hisashi "Shenzhou VII, satellite technology, control and management of the State" and the Shanghai Institute of Materia Medica Chinese Academy of Sciences Fellow Hong Liu "a class of novel anti-cancer activity with a 3 - nitro-quinoline derivatives" and other papers the results are also Chinese Association for Science magazine published in conjunction with the press conference.