好氧颗粒污泥去除溶解态铜（II）和锌（II）
Removal of dissolved copper(II) and zinc(II) by aerobic granular sludge.
作者信息
Xu H, Tay J H, Foo S K, Yang S F, Liu Y
机构信息
Division of Environmental and Water Resources, School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore.
出版信息
Water Sci Technol. 2004;50(9):155-60.
This study investigated the adsorption kinetics of dissolved copper(II) and zinc(II) by aerobic granular sludge. Two series of batch experiments were conducted at different initial copper(II), zinc(II) concentrations (Co) and initial granule concentrations (Xo). Results showed that the biosorption kinetics of individual copper(II) and zinc(II) by aerobic granules were closely related to Co and Xo. The maximum biosorption capacity of individual copper(II) and zinc(II) by aerobic granules was 246.1 mg g(-1) and 180 mg g(-1), respectively. In order to theoretically interpret the results obtained, two kinetic models previously developed for biosorption were employed and compared in this study. It was found that the model proposed by Liu et al. (2003) could fit the experimental data very well, but the second-order model failed to fit the data in some cases. It appears that aerobic granules would be potential biosorbent with high efficiency for the removal of dissolved copper(II) and zinc(II) from wastewater.
本研究考察了好氧颗粒污泥对溶解态铜（II）和锌（II）的吸附动力学。在不同的初始铜（II）、锌（II）浓度（Co）和初始颗粒浓度（Xo）下进行了两组间歇实验。结果表明，好氧颗粒对单个铜（II）和锌（II）的生物吸附动力学与Co和Xo密切相关。好氧颗粒对单个铜（II）和锌（II）的最大生物吸附容量分别为246.1 mg g(-1)和180 mg g(-1)。为了从理论上解释所得结果，本研究采用并比较了先前开发的两种生物吸附动力学模型。结果发现，Liu等人（2003年）提出的模型能够很好地拟合实验数据，但二级模型在某些情况下无法拟合数据。好氧颗粒似乎是从废水中高效去除溶解态铜（II）和锌（II）的潜在生物吸附剂。
Zotero 插件