Effect of algal flocculation on dissolved organic matters using cationic starch modified soils
文献类型：期刊论文
| 作者 | Shi, Wenqing; Bi, Lei; Pan, Gang |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2016-07 |
| 卷号 | 45期号:0页码:177-184 |
| 关键词 | Cyanobacterial bloom Cationic starch Modified soil Charge density Dissolved organic carbon |
| 英文摘要 | Modified soils (MSs) are being increasingly used as geo-engineering materials for the sedimentation removal of cyanobacterial blooms. Cationic starch (CS) has been tested as an effective soil modifier, but little is known about its potential impacts on the treated water. This study investigated dissolved organic matters in the bloom water after algal removal using cationic starch modified soils (CS-MSs). Results showed that the dissolved organic carbon (DOC) could be decreased by CS-MS flocculation and the use of higher charge density CS yielded a greater DOC reduction. When CS with the charge density of 0.052, 0.102 and 0.293 meq/g were used, DOC was decreased from 3.4 to 3.0, 2.3 and 1.7 mg/L, respectively. The excitation emission matrix fluorescence spectroscopy and UV254 analysis indicated that CS-MS exhibits an ability to remove some soluble organics, which contributed to the DOC reduction. However, the use of low charge density CS posed a potential risk of DOC increase due to the high CS loading for effective algal removal. When CS with the charge density of 0.044 meq/g was used, DOC was increased from 3.4 to 3.9 mg/L. This study suggested, when CS-MS is used for cyanobacterial bloom removal, the content of dissolved organic matters in the treated water can be controlled by optimizing the charge density of CS. For the settled organic matters, other measures (e.g., capping treatments using oxygen loaded materials) should be jointly applied after algal flocculation. (C) 2016 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 收录类别 | SCI |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/35990]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 推荐引用方式 GB/T 7714 | Shi, Wenqing,Bi, Lei,Pan, Gang. Effect of algal flocculation on dissolved organic matters using cationic starch modified soils[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2016,45(0):177-184. |
| APA | Shi, Wenqing,Bi, Lei,&Pan, Gang.(2016).Effect of algal flocculation on dissolved organic matters using cationic starch modified soils.JOURNAL OF ENVIRONMENTAL SCIENCES,45(0),177-184. |
| MLA | Shi, Wenqing,et al."Effect of algal flocculation on dissolved organic matters using cationic starch modified soils".JOURNAL OF ENVIRONMENTAL SCIENCES 45.0(2016):177-184. |
入库方式： OAI收割
来源：生态环境研究中心
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