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Li Yin Li Zhongfei Jiang Jingjing Song Yazhi 《Environmental geochemistry and health》2022,44(9):3035-3055
Environmental Geochemistry and Health - Because of insufficient liquidity, prices in the carbon market are more vulnerable to unexpected events, for which the impact duration lasts longer than that... 相似文献
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Thermal remediation of the soil contaminated with crude oil using microwave heating enhanced by carbon fiber (CF) was explored.
The contaminated soil was treated with 2.45 GHz microwave, and CF was added to improve the conversion of microwave energy into
thermal energy to heat the soil. During microwave heating, the oil contaminant was removed from the soil matrix and recovered by a
condensation system of ice-salt bath. The experimental results indicated that CF could e ciently enhance the microwave heating of
soil even with relatively low-dose. With 0.1 wt.% CF, the soil could be heated to approximately 700°C within 4 min using 800 W of
microwave irradiation. Correspondingly, the contaminated soil could be highly cleaned up in a short time. Investigation of oil recovery
showed that, during the remediation process, oil contaminant in the soil could be e ciently recovered without causing significant
secondary pollution. 相似文献
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研究白洋淀表层水(白洋淀原水)、无机盐培养基、无机盐培养基强化的白洋淀原水中双酚A在白腐真菌作用下的生物降解规律,同时考察了细菌及pH等因素对降解率的影响.实验结果表明,白洋淀原水中双酚A在白腐真菌作用下的降解率很高.甚至高于最适营养条件(无机盐培养基)下双酚A的降解率.在6 d达到完全降解.但是无机盐培养基强化的白洋淀原水抑制了白腐真菌对双酚A的降解;当细菌存在时.白腐真菌与细菌对碳源和能源等形成了竞争关系,抑制了白腐真菌的生长.不利于白腐真菌对双酚A的降解;无机盐培养基强化的白洋淀原水在初始pH-6.00时双酚A的降解率高于初始pH=7.00时双酚A的降解率.通过气相色谱/质谱(GC/MS)分析.白腐真菌降解双酚A的中间产物包括2-对羟苯基-2-酮基-1-乙醇、2-羟基苯乙酸和丙二酸等小分子酸. 相似文献
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萃取/硝化/石墨炉原子吸收法测定海水中的三丁基锡 总被引:2,自引:0,他引:2
建立了萃取/硝化/石墨炉原子吸收法分析海水中三丁基锡的方法,筛选了最佳的萃取条件、基改剂及石墨炉参数。本方法检出限为016μg/L;相对标准偏差最高不超过4%;回收率为94%~105%。 相似文献
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提高工业废水中矿物油测定结果准确度的方法探讨 总被引:3,自引:0,他引:3
工业废水中矿物油监测分析存在着水样代表性、稀释误差和标准油品差异等多种因素 ,影响测定结果的准确度。本文就紫外法测定工业废水中矿物油含量的影响因素进行了分析探讨 ,提出提高该项目测定结果准确度的方法。 相似文献
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Kinetics of enhanced adsorption by polarization for organic pollutants on activated carbon fiber 总被引:1,自引:0,他引:1
Han Yanhe Quan Xie Zhao Huimin Chen Shuo Zhao Yazhi 《Frontiers of Environmental Science & Engineering in China》2007,1(1):83-88
The adsorption kinetics for model pollutants on activated carbon fiber (ACF) by polarization was investigated in this work.
Kinetics data obtained for the adsorption of these model pollutants at open-circuit, 400 mV, and −400 mV polarization were
applied to the Lagergren equation, and adsorption rate constants (K
a) were determined. With the anodic polarization of 400 mV, the capacity of sodium phenoxide was increased from 0.0083 mmol/g
at open-circuit to 0.18 mmol/g, and a 17-fold enhancement was achieved; however, the capacity of p-nitrophenol was decreased from 2.93 mmol/g at open-circuit to 2.65 mmol/g. With the cathodal polarization of −400 mV, the
capacity of aniline was improved from 3.60 mmol/g at open-circuit to 3.88 mmol/g; however, the capacity of sodium dodecylbenzene
sulfonate was reduced from 2.20 mmol/g at open-circuit to 1.59 mmol/g. The enhancement for electrosorption changed with different
groups substituting. Anodic polarization enhances the adsorption of benzene with the electron-donating group. But whether
anodic or not, cathodal polarization had less effect on the adsorption of electron-accepting aromatic compounds, and decreased
the adsorption capacity of benzene-bearing donor-conjugate bridge-acceptor, while increasing its adsorption rate. Electrostatic
interaction played a very important role in the electrosorption of ion-pollutants.
Translated from Environmental Science, 2006, 27(6): 1111–1116 [译自: 环境科学] 相似文献
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河北省地表水中多环芳烃的分布特征 总被引:8,自引:0,他引:8
测定采自河北省12条河流和19个湖泊、水库共37个样点的地表水及悬浮颗粒中16种多环芳烃(PAH16)和有机碳的含量.结果表明,河北省地表水PAH16均值为(84.5±4.5)ng·L-1,悬浮颗粒PAH16含量均值为(17.3±4.4)μg·g-1.地表水中PAH16以中、低环成份为主,悬浮颗粒中则以中环为主.地表水PAH16高浓度样点主要分布在沧州的献县闸、桑园桥,唐山的女织寨及张家口的左卫桥、响水堡等地;悬浮物PAHs高含量样点主要分布在唐山陡河水库、保定西大洋水库、邯郸东武仕水库等地.地表水中PAH16含量与水中溶解态有机碳含量呈对数正相关;而悬浮颗粒中PAH16浓度与颗粒态有机碳浓度无显著相关关系.3个样点的地表水苯并(a)芘含量超过国家地表水质量标准;而悬浮颗粒中,菲、芴和蒽产生负面生态效应的几率较高. 相似文献