【摘 要】
：
The effectiveness of vitamin C in treating Cr(Ⅵ)-contaminated water is being evaluated. Cr(Ⅵ) is an identified pollutant of some soils and groundwater. Vitami
【机 构】
：
Department of Environmental Engineering
论文部分内容阅读
The effectiveness of vitamin C in treating Cr(Ⅵ)-contaminated water is being evaluated. Cr(Ⅵ) is an identified pollutant of some soils and groundwater. Vitamin C, an important biological reductant in humans and animals, can be used to transform Cr(Ⅵ) to essentially nontoxic Cr(Ⅲ). The removal efficiency was 89% when the mass concentration of vitamin C was 80 mg/L in 60 min, and nearly 100% Cr(Ⅵ) was removed when the mass concentration was 100 mg/L. Our data demonstrated that the removal efficiency was affected by vitamin C concentration, the reaction temperature and the dissolved oxygen concentration.The reaction mechanism of Cr(Ⅵ) by vitamin C was presented. Our study opens the way to use vitamin C to remediate Cr(Ⅵ)-contaminated soils and groundwater.
其他文献
对长江三角洲地区(苏浙沪)科技经济的发展情况、科技期刊的种类、分布及影响力进行了比较分析,旨在为长江三角洲地区的科技期刊信息化、一体化发展和优势资源的配置提供参考
There might be significant differences in the rate and efficiency in the metal complex-mediated hydrolytic reactions of proteins belonging to the different stru
为了测量在神舟飞船返回舱内由空间重电离粒子引起的辐射剂量,采用了固体核径迹探测器CR-39来测量飞船飞行期间,返回舱内由重电离粒子引起了能量沉积.本文介绍了CR-39探测器
以软脂酸、二乙烯三胺和溴丙烯为原料,合成了一种新型含双键的十五烷基咪唑啉双季铵盐,通过正交实验筛选的最佳合成条件是:2-十五烷基-1-胺乙基咪唑啉中间体和溴丙烯的物质的
本文选取高度城市化国家美国为研究对象,对美国及其国内49个州的经济及城市化发展过程以及两者在发展过程中的相关关系进行分析,发现地区城市化发展特征差异明显,经济发展影
Based on multi-proxy analysis of pollen, carbonate, TOC, TN and δ13C of organic matters, a high-resolution climatic evolution of Qinghai Lake since the Late Gl
A two consecutive years field experiment was carried out on four types of semiarid grassland along precipitation gradient in Xilin River Basin of Inner Mongolia
在家化环境下对暗纹东方NFDA3进行全人工繁殖.运用人工调控环境因子和使用适宜的促熟与催产的方法,能诱导雌雄亲鱼性腺发育同步,平均受精率为80 9%,平均孵化率为76 3%.在
文中报道了西班牙西北部San Isidro和Leitariegos地区两口钻井全新世孢粉学比较研究的结果.孢粉分种析结果显示了两地孢粉组合成分上的不同.根据从San Isidro地区泥炭沼泽获
目的 探讨全脑缺血再灌注后大鼠脑神经细胞中NF-κB的表达及其作用。方法 28只Sprague Dawley大鼠,随机分成假手术组(对照组)以及复苏后3、6、12、24h组。采用窒息合并0.5mmo