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| 折扣與優(yōu)惠：團(tuán)購(gòu)最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要：活性炭對(duì)重金屬鉛離子具有一定的吸附作用，但單獨(dú)的活性炭對(duì)鉛離子的吸附效率并不十分理想。用明膠在活性炭上涂上一層明膠薄膜，將巰基接在明膠上制成一種新型的巰基材料。用不同的實(shí)驗(yàn)條件時(shí)間、PH值、干擾離子鋅的濃度等來(lái)研究這種巰基材料對(duì)模擬工業(yè)廢水中微量鉛的處理效果。以此從探究中得出一個(gè)巰基材料處理工業(yè)廢水中微量鉛的最佳條件。 實(shí)驗(yàn)研究表明：明膠濃度在6g/L時(shí)巰基材料上所接巰基絡(luò)合鉛的量達(dá)到了最大，當(dāng)明膠濃度小于6g/L時(shí)巰基材料上巰基絡(luò)合鉛的量隨著明膠濃度的增大而增大，當(dāng)明膠濃度大于6g/L時(shí)絡(luò)合鉛的量隨著明膠濃度的增大而減??；隨著鉛標(biāo)液浸泡巰基材料時(shí)間的增長(zhǎng)巰基材料上巰基絡(luò)合鉛的量慢慢增大，當(dāng)達(dá)到6h時(shí)絡(luò)合鉛的量基本不在變化；pH值的變化對(duì)巰基材料上巰基絡(luò)合鉛的影響比較大，pH值在5之前巰基材料上巰基絡(luò)合鉛的量隨PH值的增大逐漸增大；雜離子鋅的存在會(huì)影響巰基對(duì)鉛的絡(luò)合，當(dāng)硝酸鋅的濃度在1.766ppm以下時(shí)巰基材料上巰基對(duì)鉛的絡(luò)合率在20%左右，在這之后巰基材料上巰基絡(luò)合鉛的效率隨硝酸鋅濃度增大逐漸減小。巰基材料上巰基第一次絡(luò)合鉛的吸附率為24.7%，用酸洗脫第一次用過(guò)的巰基材料后絡(luò)合鉛的吸附率為16.2%，兩次吸附都有明顯的效果。 關(guān)鍵詞：工業(yè)廢水；鉛離子；巰基材料；活性炭
ABSTRACT：Activated carbon adsorption effect on the heavy metal lead ion, but activated carbon adsorption efficiency of lead ion alone is not very ideal. In the activated carbon coated with a layer of gelatin film with gelatin, the thiol made up by a novel sulfhydryl groups in gelatin materials. In different experiment conditions of time, pH, interfering ions, zinc concentration and so on to study the treatment effect of this sulfhydryl materials for trace lead in simulated industrial wastewater. It is concluded that a thiol material handling of trace lead in industrial wastewater by the optimum conditions in inquiry. Experimental results show that: the concentration of gelatin in the 6g/L thiol material after sulfhydryl complexation of lead weight reached the maximum when the amount of thiol material, mercapto complex lead gelatin concentration is less than 6g/L increases with the increase of gelatin concentration, when the concentration of gelatin is greater than 6g/L complexation of lead content decreases with increasing the concentration of gelatin; slowly with increasing immersion time lead standard solution of thiol material growth sulfhydryl material sulfhydryl complexing the amount of lead, when reach 6h complexation of the amount of lead in basic not change; influence of pH value on sulfhydryl material mercapto complex lead is relatively large, the value of pH before 5 sulfhydryl material mercapto complex lead with pH it will increase gradually; miscellaneous zinc ion will influence the existence of sulfhydryl on lead complex, when nitrate concentration below the 1.766ppm thiol material sulfhydryl on lead complexation rate at around 20%, decreased gradually after this efficiency sulfhydryl material sulfhydryl complex lead with zinc nitrate concentration increased. Sulfhydryl material first adsorptive complexing lead rate sulfhydryl was 24.7%, with acid eluted first used a thiol material adsorption complex lead rate was 16.2%, the two adsorption has obvious effect. Keywords：lndustrial wastewater; lead ion; sulfhydry; lacivated carbon
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