Mathieu Nsenga Kumwimba1,2,3,4, Bo Zhu5,6, Diana Kavidia Muyembe7, Mawuli Dzakpasu8. 1. Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, Chengdu, 610041, China. 2. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China. 3. University of Chinese Academy of Sciences, Beijing, 100049, China. 4. Department of Environmental Sciences, University of Lubumbashi, PO Box 1825, Lubumbashi, Democratic Republic of Congo. 5. Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, Chengdu, 610041, China. bzhu@imde.ac.cn. 6. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China. bzhu@imde.ac.cn. 7. School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, People's Republic of China. 8. Key Laboratory of Northwest Water Resources, Environment and Ecology, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
Abstract
Eco-ditches are being explored to maximize their capability of capturing pollutants and mitigate any harmful side effects in rivers. In this study, mesocosm plastic drum sediment and field experiments were set up to screen 18 plant species found in ditches and identify those with potential for high biomass production and nutrients removal. Terrestrial plants grown in the mesocosm system were shown to be able to acclimate to aquatic conditions and to survive in primary domestic sewage. About 73-95% increase in plant biomass was recorded. Removal efficiencies for total nitrogen, total phosphorus, and ammonium-nitrogen from the sewage of 72-99%, 64-99%, and 75-100%, respectively, were recorded. Furthermore, complete removal of the applied nitrate-nitrogen load was achieved in mesocosm systems. Findings also show that all species, but especially Acorus calamus, Canna indica, Canna lily, Cyperus alternifolius, Colocasia gigantea, Eichhornia crassipes, Iris sibirica, and Typha latifolia had the highest efficiencies for nitrogen and phosphorous removal. The N and P mass balance analysis demonstrated that plant uptake and sediment N and P accumulation accounted for 41-86% and 18-49% of the total influent TN and TP loads, respectively. In addition, the amounts of nitrogen and phosphorous uptake by these plant species were influenced significantly by biomass. The field-culture experiment further identified Canna indica followed by Cyperus alternifolius as the most promising for high biomass production and nutrients uptake. Therefore, these plants may be recommended for extensive use in treating highly eutrophicated rivers. Outcomes of this work can be useful for model design specifications in eco-ditch mitigation of sewage pollution.
Eco-ditches are being explored to maximize their capability of capturing pollutants and mitigate any harmful side effects in rivers. In this study, mesocosm plastic drum sediment and field experiments were set up to screen 18 plant species found in ditches and identify those with potential for high biomass production and nutrients removal. Terrestrial plants grown in the mesocosm system were shown to be able to acclimate to aquatic conditions and to survive in primary domestic sewage. About 73-95% increase in plant biomass was recorded. Removal efficiencies for total nitrogen, total n>an class="Chemical">phosphorus, and ammonium-nitrogen from the sewage of 72-99%, 64-99%, and 75-100%, respectively, were recorded. Furthermore, complete removal of the applied nitrate-nitrogen load was achieved in mesocosm systems. Findings also show that all species, but especially Acorus calamus, Canna indica, Canna lily, Cyperus alternifolius, Colocasia gigantea, Eichhornia crassipes, Iris sibirica, and Typha latifolia had the highest efficiencies for nitrogen and phosphorous removal. The N and P mass balance analysis demonstrated that plant uptake and sediment N and P accumulation accounted for 41-86% and 18-49% of the total influent TN and TP loads, respectively. In addition, the amounts of nitrogen and phosphorous uptake by these plant species were influenced significantly by biomass. The field-culture experiment further identified Canna indica followed by Cyperus alternifolius as the most promising for high biomass production and nutrients uptake. Therefore, these plants may be recommended for extensive use in treating highly eutrophicated rivers. Outcomes of this work can be useful for model design specifications in eco-ditch mitigation of sewage pollution.
Authors: Erin R Bennett; Matthew T Moore; Charles M Cooper; Sammie Smith; F Douglas Shields; Ken G Drouillard; Ralf Schulz Journal: Environ Toxicol Chem Date: 2005-09 Impact factor: 3.742
Authors: M T Moore; E R Bennett; C M Cooper; S Smith; J L Farris; K G Drouillard; R Schulz Journal: Environ Pollut Date: 2005-11-28 Impact factor: 8.071
Authors: Miao Li; Guo-ping Sheng; Yue-jin Wu; Zeng-liang Yu; Gary S Bañuelos; Han-qing Yu Journal: Environ Sci Pollut Res Int Date: 2014-05-10 Impact factor: 4.223
Authors: U N Rai; R D Tripathi; N K Singh; A K Upadhyay; S Dwivedi; M K Shukla; S Mallick; S N Singh; C S Nautiyal Journal: Bioresour Technol Date: 2013-09-11 Impact factor: 9.642