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(xué)|元素分析|水分測定儀|樣品前處理|試驗機(jī)|培養(yǎng)箱


化工儀器網(wǎng)>技術(shù)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(yīng)用案例-20190609

來源:美國布魯克海文儀器公司   2019年06月17日 15:18  
 文獻(xiàn)名: Unraveling the effect of sub-cooling temperatures on the kinetic performance of biopolymers for methane hydrate

 

作者: SanaYaquba,b; Bhajanlala,b; Azmi bin Mohd Shariffa,b; Nurhayati Bt.Mellona,b

aChemical Engineering Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610, Perak, Malaysia

bCO2 Research Centre (CO2RES), Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610, Perak, Malaysia

 

摘要:In deep sea plays, where the driving force or sub-cooling temperature for hydrate formation is high, the commercially used kinetic hydrate inhibitors (KHIs) lose their kinetic inhibition performance, additionally they are toxic. Though, biodegradable biopolymers are deliberated as an alternative KHIs. However, the inhibition performance of biopolymers solely for methane hydrate formation at high sub-cooling temperatures has not been evaluated. In current work the kinetic inhibition performance of five biopolymers (Pectin, Sodium- Carboxymethyl cellulose (Na-CMC), Tapioca starch, Dextran and Xanthan gum) on methane hydrate formation is evaluated using isochoric constant cooling method on sapphire hydrate reactor at 95?bar and sub-cooling temperatures of 9?°C and 12?°C. Induction time, hydrate formation rate, amount of methane consumed and percentage relative inhibition power are determined and used as kinetic inhibition indicators. Present data-set reveals that biopolymers efficiently inhibit methane hydrate formation at high sub-cooling temperatures. Among all studied biopolymers Pectin and Na-CMC commendably delayed hydrate nucleation for 78 and 61min respectively. Furthermore, Tapioca starch, Pectin and Na-CMC significantly reduced hydrate formation rate, methane consumption and percentage relative inhibition power. For further analysis on molecular level Conductor like Screening Model for Real Solvents (COSMO-RS) software is used. The interaction energy estimation using COSMO-RS showed that attractive interactions between biopolymers and water molecules are leading to prolonged nucleation. Furthermore, the effect of biopolymer concentrations (0.12?wt% - 1.5?wt%) on kinetic inhibition is elaborated by establishing a relationship between induction time, air-liquid interfacial and electrokinetic properties.

免責(zé)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(luò)有限公司-化工儀器網(wǎng)合法擁有版權(quán)或有權(quán)使用的作品,未經(jīng)本網(wǎng)授權(quán)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(quán)使用作品的,應(yīng)在授權(quán)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(guān)法律責(zé)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(diǎn)和對其真實(shí)性負(fù)責(zé),不承擔(dān)此類作品侵權(quán)行為的直接責(zé)任及連帶責(zé)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(fù)版權(quán)等法律責(zé)任。
  • 如涉及作品內(nèi)容、版權(quán)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(guān)權(quán)利。
企業(yè)未開通此功能
詳詢客服 : 0571-87858618
郯城县| 吉林市| 衡东县| 松阳县| 赤水市| 墨玉县| 乐业县| 广汉市| 周宁县| 黄浦区| 东光县| 永平县| 池州市| 怀柔区| 松滋市| 喀喇| 韶山市| 肥东县| 永登县| 九台市| 万盛区| 仁布县| 正蓝旗| 临清市| 丰都县| 那坡县| 宜良县| 天津市| 土默特左旗| 汝城县| 花垣县| 陕西省| 茂名市| 临沂市| 乾安县| 望都县| 泌阳县| 阳原县| 郁南县| 于都县| 夹江县|