急求机械论文英语翻译
AbstractPreviousstudieshaveindicatedthataneffectivecontroltechniqueforheavymetalemiss...
Abstract
Previous studies have indicated that an effective control technique for heavy metal emissions from incinerators is to use solid sorbents to capture metals by physical deposition and chemical adsorption. However, the adsorbed heavy metals on the retired sorbents could possibly cause secondary pollution if they are inadequately treated. The main objective of this study is to increase the stability of four heavy metals (Cu, Pb, Cr and Cd) on retired sorbents by heat treatment. The stability was based on the toxicity characteristic leaching procedure (TCLP) tests. The parameters evaluated included: (1) different temperatures (900, 1100 and 1300°C); and (2) various heating times (20, 40 and 60 min). The results indicated that most of the leaching rates decreased with increasing temperature for the four toxic heavy metals. The heat treatment time did not regularly influence the stability of heavy metals, and affected it slightly when the temperature was controlled at 1300°C. 展开
Previous studies have indicated that an effective control technique for heavy metal emissions from incinerators is to use solid sorbents to capture metals by physical deposition and chemical adsorption. However, the adsorbed heavy metals on the retired sorbents could possibly cause secondary pollution if they are inadequately treated. The main objective of this study is to increase the stability of four heavy metals (Cu, Pb, Cr and Cd) on retired sorbents by heat treatment. The stability was based on the toxicity characteristic leaching procedure (TCLP) tests. The parameters evaluated included: (1) different temperatures (900, 1100 and 1300°C); and (2) various heating times (20, 40 and 60 min). The results indicated that most of the leaching rates decreased with increasing temperature for the four toxic heavy metals. The heat treatment time did not regularly influence the stability of heavy metals, and affected it slightly when the temperature was controlled at 1300°C. 展开
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摘要
以往研究表明,对于焚化炉内重金属排放物的有效治理技术是:使用固体吸附剂通过物理吸附或者化学吸附来吸收金属颗粒。然而,如果不能处理好使用过的吸附剂的话,就会造成二次污染。本课题研究的是如何通过热处理来来增强被吸附重金属(铜、铅、铬、镉)的吸附稳定性。稳定性的测试要基于毒性过滤技术。所需参数包括:1,不同温度(900、1100、1300摄氏度);2,不同加热时间(20、40、60分钟)。实验结果表明,实验所用的四种有毒重金属过滤速度随着温度的上升而下降。加热时间并不会显著影响重金属的稳定性,当温度为1300摄氏度时,温度会对结果有微小的影响
以往研究表明,对于焚化炉内重金属排放物的有效治理技术是:使用固体吸附剂通过物理吸附或者化学吸附来吸收金属颗粒。然而,如果不能处理好使用过的吸附剂的话,就会造成二次污染。本课题研究的是如何通过热处理来来增强被吸附重金属(铜、铅、铬、镉)的吸附稳定性。稳定性的测试要基于毒性过滤技术。所需参数包括:1,不同温度(900、1100、1300摄氏度);2,不同加热时间(20、40、60分钟)。实验结果表明,实验所用的四种有毒重金属过滤速度随着温度的上升而下降。加热时间并不会显著影响重金属的稳定性,当温度为1300摄氏度时,温度会对结果有微小的影响
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摘要
以往的研究表明,一个焚化炉重金属排放的有效控制方法是使用固体吸附剂来捕捉物理气相沉积和化学吸附金属。然而,关于退休吸附剂吸附重金属可能会造成二次污染,如果他们没有得到充分的治疗。本研究的主要目的是增加热治疗中的四种重金属吸附剂对退休(铜,铅,铬,镉)的稳定。在稳定的基础是毒性特性溶出程序(TCLP)测试。评估的参数包括:(1)不同温度(900,1100和1300℃)和(2)各种加热时间(20,40和60分钟)。结果表明,大多数的浸出率增加为四有毒重金属温度降低。热处理时间不规律影响重金属的稳定,影响稍微当温度在1300 ° C的控制
以往的研究表明,一个焚化炉重金属排放的有效控制方法是使用固体吸附剂来捕捉物理气相沉积和化学吸附金属。然而,关于退休吸附剂吸附重金属可能会造成二次污染,如果他们没有得到充分的治疗。本研究的主要目的是增加热治疗中的四种重金属吸附剂对退休(铜,铅,铬,镉)的稳定。在稳定的基础是毒性特性溶出程序(TCLP)测试。评估的参数包括:(1)不同温度(900,1100和1300℃)和(2)各种加热时间(20,40和60分钟)。结果表明,大多数的浸出率增加为四有毒重金属温度降低。热处理时间不规律影响重金属的稳定,影响稍微当温度在1300 ° C的控制
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