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煤层及煤系岩层中常含黄铁矿及有机硫,这些硫化物氧化物形成硫酸,使矿井水呈酸性()
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第1题
A.硫化物对产甲烷菌具有很强的生物毒性,但未电离的H2S毒性很小
B.可用金属盐沉淀法去除硫化物
C.可调节反应器pH值,以沼气曝气,即气提的方式去除H2S
D.可利用硫细菌将硫化物氧化为单质硫的方法去除硫元素
第2题
硫化物sulfide (1) 无机硫(H2S)。H2S及其燃烧产物SO2是剧毒气体,对环境有害;酸性气体,两者与水形成酸液造成腐蚀;H2S又是制造硫磺、硫酸的原料。Inorganic sulfur (H2S). H2S and its combustion product SO2 are highly toxic gases, which are harmful to the environment. Acidic gases, both of which form acid with water and cause corrosion; H2S is also used to make sulfur and sulfuric acid. (2) 有机硫,CS2和COS(硫氧化碳)等。天然气作为化工原料时易使催化剂中毒,影响产品质量。Organic sulfur, CS2 and COS (sulfur oxide carbon), etc. When natural gas is used as chemical raw material, the catalyst is easy to be poisoned and the product quality is affected.
第5题
生产中常常采用( )来吸收三氧化硫。
A.A:水B.B:70%硫酸C.C:98.3%的硫酸D.D:都可以
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