Arid
DOI10.1016/j.ecoleng.2018.07.005
Wastewater treatment by Lemna minor and Azolla filiculoides in tropical semi-arid regions of Ethiopia
Amare, Elfu1; Kebede, Fassil2; Mulat, Worku3
通讯作者Amare, Elfu
来源期刊ECOLOGICAL ENGINEERING
ISSN0925-8574
EISSN1872-6992
出版年2018
卷号120页码:464-473
英文摘要

In this study, wastewater blended from textile, distillery, and domestic sources at a corresponding volumetric ratio of 3:1:18, was treated using Lemna minor and Azolla filiculoides for 28 days in a batch system installed in a shade house. Analysis of variance between the two macrophytes showed no statistical differences in removals of all tested parameters (p < 0.05) except for the biochemical oxygen demand where removal was higher in the L. minor. Electrical conductivity, pH, total dissolved solids, the studied heavy metals, and sulfate ma the agricultural reuse and discharge limits. The removal of chemical oxygen demand by A. filiculoides (96%) was slightly higher than the L. minor (92%), but the biochemical oxygen demand removal by L. minor (92%) was significantly higher than A. filiculoides (90%). Despite the high removals of chemical and biochemical oxygen demands, total phosphorus and total nitrogen attained, the concentrations were found exceeding the discharge and agricultural reuse limits. Finally, while the number of total coliform in both macrophyte populated chambers were too numerous to count, the number of colonies of fecal coliform were 400 in the L. minor and 267 in the A. filiculoides treatments. In conclusion, the higher removals of all the studied parameters in the macrophyte populated chambers compared with the control might be attributed to the contributions of the macrophytes.


英文关键词Phytoremediation Duckweed Azolla Wastewater Semi-arid Ethiopia
类型Article
语种英语
国家Ethiopia ; USA
收录类别SCI-E
WOS记录号WOS:000444614500049
WOS关键词COVERED SEWAGE LAGOONS ; HEAVY-METALS ; AQUATIC MACROPHYTES ; CONSTRUCTED WETLANDS ; REMOVAL ; DUCKWEED ; PHYTOREMEDIATION ; ACCUMULATION ; PLANTS ; WASTEWATERS
WOS类目Ecology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology ; Engineering
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/208706
作者单位1.Mekelle Univ, Ethiopian Inst Technol Mekelle, Mekele, Ethiopia;
2.Ethiopian Agr Transformat Agcy, POB 708, Addis Ababa, Ethiopia;
3.Univ Connecticut, Civil & Environm Engn Dept, Storrs, CT USA
推荐引用方式
GB/T 7714
Amare, Elfu,Kebede, Fassil,Mulat, Worku. Wastewater treatment by Lemna minor and Azolla filiculoides in tropical semi-arid regions of Ethiopia[J],2018,120:464-473.
APA Amare, Elfu,Kebede, Fassil,&Mulat, Worku.(2018).Wastewater treatment by Lemna minor and Azolla filiculoides in tropical semi-arid regions of Ethiopia.ECOLOGICAL ENGINEERING,120,464-473.
MLA Amare, Elfu,et al."Wastewater treatment by Lemna minor and Azolla filiculoides in tropical semi-arid regions of Ethiopia".ECOLOGICAL ENGINEERING 120(2018):464-473.
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