三峡环境与生态
三峽環境與生態
삼협배경여생태
CHONGQING ENVIRONMENTAL SCIENCE
2013年
4期
8-11
,共4页
活性炭负载氧化铝%氟离子%吸附%pH
活性炭負載氧化鋁%氟離子%吸附%pH
활성탄부재양화려%불리자%흡부%pH
alumina supported on activated carbon%fluoride ions%adsorption%pH
采用载铝活性炭，通过批实验研究了对水中氟离子吸附特点，考察了负载条件、操作条件对水中氟离子吸附过程的影响。结果表明，载铝活性炭吸附水中的氟离子在24 h时达到吸附平衡；对于氟离子浓度为20 mg/L ，载铝活性炭单位当量氧化铝的氟离子吸附容量是单一活性Al2 O3吸附容量的40多倍；溶液过低或过高的pH对载铝活性炭吸附水中氟离子都有不利影响，在本实验条件下，当pH＝8时载铝活性炭饱和吸附容量达到最大值；载铝活性炭对水中氟离子的吸附总体上属于放热过程，温度在30℃时已明显构成对吸附的不利影响。
採用載鋁活性炭，通過批實驗研究瞭對水中氟離子吸附特點，攷察瞭負載條件、操作條件對水中氟離子吸附過程的影響。結果錶明，載鋁活性炭吸附水中的氟離子在24 h時達到吸附平衡；對于氟離子濃度為20 mg/L ，載鋁活性炭單位噹量氧化鋁的氟離子吸附容量是單一活性Al2 O3吸附容量的40多倍；溶液過低或過高的pH對載鋁活性炭吸附水中氟離子都有不利影響，在本實驗條件下，噹pH＝8時載鋁活性炭飽和吸附容量達到最大值；載鋁活性炭對水中氟離子的吸附總體上屬于放熱過程，溫度在30℃時已明顯構成對吸附的不利影響。
채용재려활성탄，통과비실험연구료대수중불리자흡부특점，고찰료부재조건、조작조건대수중불리자흡부과정적영향。결과표명，재려활성탄흡부수중적불리자재24 h시체도흡부평형；대우불리자농도위20 mg/L ，재려활성탄단위당량양화려적불리자흡부용량시단일활성Al2 O3흡부용량적40다배；용액과저혹과고적pH대재려활성탄흡부수중불리자도유불리영향，재본실험조건하，당pH＝8시재려활성탄포화흡부용량체도최대치；재려활성탄대수중불리자적흡부총체상속우방열과정，온도재30℃시이명현구성대흡부적불리영향。
Using alumina supported on activated carbon as adsorbent in batch experiments ,this paper studied the ad-sorption characteristics ,and the loading and operation conditions of adsorbents affecting the removal of fluoride in water .The results showed that the adsorption of fluoride ions by the adsorbent reached adsorption equilibrium in 24 h .For an ion concentration of 20 mg/L ,the adsorption capacity of alumina supported on activated carbon was more than 40 times as large as that of activated alumina alone .Too low or too high a pH value of the solution would have adverse effects on the adsorption of fluoride ions by alumina supported on activated carbon .Under the condi-tions of this experiment ,the saturated adsorption capacity of alumina supported on activated carbon reached the maximum at pH=8 .The adsorption of fluoride ions in water by the alumina supported on activated carbon was gen-erally exothermic ,which appeared to adversely affect the adsorption at 30℃ .
