国产精品视频一区二区三区四,亚洲av美洲av综合av,99国内精品久久久久久久,欧美电影一区二区三区电影

產(chǎn)品推薦:氣相|液相|光譜|質(zhì)譜|電化學|元素分析|水分測定儀|樣品前處理|試驗機|培養(yǎng)箱


化工儀器網(wǎng)>技術中心>其他文章>正文

歡迎聯(lián)系我

有什么可以幫您? 在線咨詢

測量應用案例-20211001

來源:美國布魯克海文儀器公司   2021年11月16日 13:39  
 

文獻名:Removal of Cd (II) from Aqueous Solutions by Aluminium Hydroxide-Modified Attapulgite

 

 

作者 Qinhu Zhang, Liqun Cai

College of Resources and Environment, Gansu Agricultural University, Lanzhou, China

 

摘要:Modified attapulgite (ATP-Al) was prepared with aluminium hydroxide through a co-precipitation method, and we used ATP-Al as an adsorbent to investigate the adsorption of Cd(II) from aqueous solutions. Raw ATP and ATP-Al were characterized by TEM, FTIR, XRD and Zeta. Adsorption parameters, such as pH, initial Cd(II) concentration, contact time and adsorbent dose, were evaluated to explain the mechanism of Cd(II) adsorption on ATP-Al. ATP-Al had a better adsorption capacity of Cd(II) than ATP. When the pH value was 7, ATP and ATP-Al had the highest Cd(II) adsorption capacities. The optimal dose of adsorbent was 0.1 g per 25 mL of solution. The Freundlich model better described the adsorption isotherm on ATP and ATP-Al than the Langmuir model. The maximum adsorption capacity for Cd(II) calculated was 4.01 and 6.36 mg g-1, respectively. Adsorption of Cd(II) onto ATP and ATP-Al followed pseudo-second order kinetics. The Gibbs free energy (ΔG°), enthalpy (ΔH°) and entropy (ΔS°) were evaluated by a thermodynamic study. The adsorption processes of ATP and ATP-Al were exothermic, spontaneous and mainly based on physical adsorption.

 

關鍵詞:attapulgite, aluminium hydroxide, Cd(II), adsorption

免責聲明

  • 凡本網(wǎng)注明“來源:化工儀器網(wǎng)”的所有作品,均為浙江興旺寶明通網(wǎng)絡有限公司-化工儀器網(wǎng)合法擁有版權或有權使用的作品,未經(jīng)本網(wǎng)授權不得轉(zhuǎn)載、摘編或利用其它方式使用上述作品。已經(jīng)本網(wǎng)授權使用作品的,應在授權范圍內(nèi)使用,并注明“來源:化工儀器網(wǎng)”。違反上述聲明者,本網(wǎng)將追究其相關法律責任。
  • 本網(wǎng)轉(zhuǎn)載并注明自其他來源(非化工儀器網(wǎng))的作品,目的在于傳遞更多信息,并不代表本網(wǎng)贊同其觀點和對其真實性負責,不承擔此類作品侵權行為的直接責任及連帶責任。其他媒體、網(wǎng)站或個人從本網(wǎng)轉(zhuǎn)載時,必須保留本網(wǎng)注明的作品第一來源,并自負版權等法律責任。
  • 如涉及作品內(nèi)容、版權等問題,請在作品發(fā)表之日起一周內(nèi)與本網(wǎng)聯(lián)系,否則視為放棄相關權利。
企業(yè)未開通此功能
詳詢客服 : 0571-87858618
普定县| 当涂县| 美姑县| 应城市| 信丰县| 宜丰县| 乌兰县| 济南市| 平遥县| 田东县| 台北县| 杨浦区| 分宜县| 隆回县| 汉源县| 哈巴河县| 灵石县| 郓城县| 瓮安县| 石泉县| 和政县| 永靖县| 石屏县| 紫云| 祥云县| 康马县| 内江市| 郁南县| 嘉鱼县| 三河市| 尚志市| 襄垣县| 德江县| 京山县| 顺平县| 瑞昌市| 鹤庆县| 平泉县| 屏南县| 定安县| 永昌县|