久久国产精品午夜一区_91精品國產高清久久久久久91_?级毛片免费全部播放_欧美色图在线视频一区二区三区_国产综合亚洲一区二区三区_中文字幕熟女网_国产精品男人爽免费视频_九九无码网战_亚洲日本三级电影在线观看_欧美日韩DVD手机在线不卡

產(chǎn)品展廳收藏該商鋪

您好 登錄 注冊

當前位置:
美國布魯克海文儀器公司>技術文章>測量應用案例-20220206

技術文章

測量應用案例-20220206

閱讀:180          發(fā)布時間:2022-2-28
 

文獻名: Sorption of anthracene (C14H10) and 9-anthroic acid (C15H10O2) onto biochar-amended soils as affected by field aging treatments

 

 

作者 Juhee Kima,  Chanyang Kima,  Minseok Parka,  Wonjae Hwanga,  Minhee Kimb,  Seunghun Hyuna

a Department of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea

b Ministry of Environment, Hanam-si, Gyeonggi-do, 12902, Republic of Korea

 

 

 

摘要:There is a lack of information on how aging affects the sorption of ionizable organic compounds on biochar-amended soils. To that end, this study investigates the sorption of two hydrophobic solutes (anthracene (ANT) and 9-anthroic acid (9-ANCA)) onto biochar-amended (5%, w/w) soils as a function of aging period (0, 6, and 12 months), electrolyte (5 mM CaCl2 and 10 mM KCl), and aqueous pH. The isotherm plot of both solutes was fairly linear (r2 > 0.998) and the linear sorption coefficient (Kd, L kg1) was obtained from this. In CaCl2 solution at pH 5, the log Kd of ANT tended to decrease (from 3.90 to 3.72) with an increasing aging period, which was attributed to clogged pore surface, whereas the differences in 9-ANCA sorption (from 2.56 to 2.51) were not significant (α = 0.05). The increased ANT sorption at acidic pH (<4) could be attributed to π-π interaction. Aqueous Ca2+ ions played an important role in 9-ANCA sorption by forming a Ca-bridge between anionic solute and negatively charged adsorbent surface, thus accounting for up to 35% of its sorption at alkaline pH (>8). The spectroscopic data and isoelectric point measurement results indicated that the number of oxygen-containing functional groups and the content of elemental oxygen were both higher in aged samples, resulting in a more polar (negatively charged) surface. The formation of surface polar groups and the associated deformation altered the adsorbent nature of the tested biochar, thereby fortifying the hydrophilic retention propensity for ionizable organic solutes.

 

關鍵詞:Biochar aging; Field weathering; Ionizable organic solute; Functional group; Ca-bridge

 

收藏該商鋪

登錄 后再收藏

提示

您的留言已提交成功!我們將在第一時間回復您~

對比框

產(chǎn)品對比 產(chǎn)品對比 聯(lián)系電話 二維碼 意見反饋 在線交流

掃一掃訪問手機商鋪
010-62081908
在線留言
主站蜘蛛池模板: 盐源县| 清新县| 蕲春县| 新绛县| 庆城县| 会宁县| 沁阳市| 东辽县| 宜兴市| 洪江市| 塘沽区| 镇坪县| 永仁县| 义马市| 连云港市| 鹤壁市| 凤台县| 卢湾区| 沙雅县| 洪洞县| 浦江县| 金坛市| 外汇| 朔州市| 巩留县| 城市| 吉安市| 田东县| 广州市| 伊金霍洛旗| 崇仁县| 龙州县| 两当县| 卢湾区| 秭归县| 紫金县| 正定县| 安庆市| 拉萨市| 湟源县| 罗城|