英语翻译别拿金山翻译的过来骗积分,做人要实在!(短文见 mussa007)

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英语翻译别拿金山翻译的过来骗积分,做人要实在!(短文见 mussa007)

英语翻译别拿金山翻译的过来骗积分,做人要实在!(短文见 mussa007)
英语翻译
别拿金山翻译的过来骗积分,做人要实在!
(短文见 mussa007)

英语翻译别拿金山翻译的过来骗积分,做人要实在!(短文见 mussa007)
我的理解是:用斜生栅藻来生物降解污水中含有的氰化物

Biodegradation of cyanide containing effluents by Scenedesmus obliquus
Cyanide is highly toxic and its toxicity is related to its physicochemical specification. It has played a key role in extract...

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Biodegradation of cyanide containing effluents by Scenedesmus obliquus
Cyanide is highly toxic and its toxicity is related to its physicochemical specification. It has played a key role in extracting gold and other metals such as silver, copper and zinc from ores in many countries of the world. The free cyanide form HCN, CN−, is classified as the most toxic due to its high metabolic inhibition potential. There have been many incidents throughout the world due to improper handling or failure during the transportation. As an example, in 1990, a leak in Colorado (USA) was reported to have destroyed aquatic life along a 17-mile stretch of one river, and in the same year, 10 million gallons of cyanide solution spilled into the South Carolina River (USA), killing thousands of fish. Exposure to cyanide in solution through consumption of surface water is the main exposure route for most animals affected by cyanide poisoning, but concurrent exposure through inhalation and skin absorption may also occur. Cyanide contamination of rivers, lakes, and seas can permanently damage some species. Toxicological studies have indicated that short-term exposure to high levels of cyanide can harm the nervous, respiratory and cardiovascular system of animals. In the environment, cyanide may degrade forming products of generally lower toxicity, but which may also be problematic in the environment.
Many industrial activities such as coal processing, organic synthesis, metal plating, and ore leaching, generate significant quantities of cyanide which is well-known metabolic inhibitor. Cyanidation of oxidized ore is a widespread technology used on an industrial scale for silver and gold recovery from oxidized ores and sulphidic concentrates. Currently, there are about 875 gold and silver operations through the world, of which about 460 utilize cyanide. According to some estimates up to 90% of gold is produced using cyanide. Chemical and physical processes have been applied in most cases for cyanide degradation from tailings slurries and wastewaters. However, there are still problems facing the mining industry because of stringent environmental regulations and the cost of compliance with those regulationsVolatilization and sorption are the two physical processes that contribute to the loss of cyanide from surface water. At pH <9.2, most of the free cyanide in solution exists as hydrogen cyanide, the volatile form. Volatilization rates are dependent upon pH (lower pH, faster rates) and aeration. The most common alkali metal cyanides (sodium and potassium cyanide) may be lost from surface waters primarily through volatilization, whereas the sparingly soluble metal cyanides (copper, nickel and zinc) are removed from water predominantly by sedimentation and biodegradation.
Microbiological treatment potentially offers the cheapest means of cyanide degradation. Biodegradation of cyanide in natural surface waters is dependent on such factors as cyanide concentrations, pH, temperature, availability of nutrients, and acclimation of microbes. Microbial degradation of cyanide from tailings and wastewater is proven and viable alternative to chemical and physical treatment processes. Biological treatment can be applied in many situations, under many conditions, and in many configurations including in situ, aerobic and anaerobic, active and passive, and suspended and attached growth. It has been employed in full-scale facilities worldwide both for conventional cyanidation and heap leach applications.

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氰化物的生物降解作用通过Scenedesmus obliquus 包含废水
氰化物非常有毒,它的毒性与它的physicochemical 说明有关。 它已经在选出金和其他金属(例如银,来自在世界的很多国家的矿石的铜和锌)中起关键作用。 免费氰化物形成HCN,CN,由于它的高的代谢抑制潜能被归类为最有毒的。 由于不恰当的处理或者失败在运输期间有整个世界的很多事件。作为一个例子,在1990年...

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氰化物的生物降解作用通过Scenedesmus obliquus 包含废水
氰化物非常有毒,它的毒性与它的physicochemical 说明有关。 它已经在选出金和其他金属(例如银,来自在世界的很多国家的矿石的铜和锌)中起关键作用。 免费氰化物形成HCN,CN,由于它的高的代谢抑制潜能被归类为最有毒的。 由于不恰当的处理或者失败在运输期间有整个世界的很多事件。作为一个例子,在1990年, 在科罗拉多(美国)的一个漏洞被报告沿着一条河的17英里的伸展破坏水产的生命, 并且同年,1000万加仑氰化物解决办法溅出进南卡罗来纳河(美国),杀死数千条鱼。 要溶解状态中因地面水的消耗用氰化物处理的暴露是氰化物中毒影响的大多数动物的主要暴露路线, 一致暴露通过吸入和皮吸收可能也发生。河,湖和海的氰化物污染能永久损坏一些种类。 毒物的研究已经表明对氰化物的高的水平的短期的暴露能损害神经,呼吸和动物的心血管系统。 在环境里,氰化物可能降低形成一般低的毒性的产品,但是也可能在环境里成问题。
很多工业活动例如处理的煤,有机综合,金属绘制的地图,和浸出的矿石,产生是著名的代谢抑制剂的氰化物的大量。 使氧化的矿石的Cyanidation是对于银和金从使来说工业规模使用氧化的矿石中恢复的一项广泛的技术,sulphidic集中。目前,通过世界约有875次金和银行动,其中大约460利用氰化物。 根据一些估计高达90%的金被使用氰化物生产。 化学和物质过程已经被从尾巴淤浆和废水在氰化物堕落的大多数案件内使用。 但是, 因为严格的环境规章,仍然有问题摆在采矿工业面前,服从那些regulationsVolatilization和sorption的费用是 从地面水导致氰化物的损失的两个物理过程。在pH值<9.2, 大多数免费氰化物溶解状态中以氢氰化物,易挥发的形式形态存在。 挥发比率依赖pH值(更低的pH值,更快的比率)和充气。 最普通的碱金属氰化物(钠和钾氰化物)可能主要通过挥发从地面水丢失, 鉴于节约可溶的金属氰化物(铜,镍和锌)被沉积和生物降解作用主要从水除去。
微生物的处理潜在提供氰化物堕落的最便宜的方法。 在自然的地面水里的氰化物的生物降解作用依赖象氰化物集中,pH值,温度,营养物的可用性,以及微生物的风土驯化这样的因素。来自尾巴和废水的氰化物的微生物的堕落被证明和可行的化学和物理处理过程的替代。 生物学的处理可以被在很多形势里使用, 在很多条件下,和在在原处包括的很多构造过程中,需氧和嫌气,主动和被动,并且中止和使发展相关联。 这为传统的cyanidation和堆浸出应用被用于全世界的大规模设备。
(仅供参考)

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