Use of two spatially separated plant species alters microbial community function in horizontal subsurface flow constructed wetlands

Button, Mark; Rodríguez, Mariana; Brisson, Jacques; Weber, Kela P.

doi:10.1016/j.ecoleng.2016.03.044

Cited by 29 publications

(12 citation statements)

References 32 publications

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“…Nitrogen in combined form is one of the principal pollutants present in wastewater; it exists in both organic and inorganic forms. The organic forms of nitrogen include amino acids, urea, uric acids, purines and pyrimidines, while free NH 3 , ammonium salts and nitrogen gas (Nitrogen is not a polluting compound) are the forms of inorganic nitrogen [20][21][22][23][24]. Nitrogen content is reduced through a series of treatment pathways such as ammonification, nitrification and denitrification, plant absorption uptake as nitrates, biomass assimilation, nitrate reduction, ammonia volatilization, adsorption, Anammox and Canon processes [25][26][27][28][29].…”

Section: Wastewater Pollutantsmentioning

confidence: 99%

“…Common Man-made Wastewater Pollutants and Their Effects[20][21][22][23][24][25][26][27][28][29][30][31][32][33] Organic pollutants Nitrogen (Present as ammonia and organic nitrogen) Presence of algal blooms in water, increase in the amount of chlorine, increasing risk of cancer, stimulation of harmful microbes like Pfiesteria which may lead to eye and respiratory irritation, headache, gastrointestinal complaints and methaemoglobinemia (blue-baby disease) in infants. PAHs may have short-term as well as long-term effects on the normal functioning of the body.…”

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confidence: 99%

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Microbial population dynamics in constructed wetlands: Review of recent advancements for wastewater treatment

Rajan

Sudarsan

Nithiyanantham³

2018

Environmental Engineering Research

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Constructed wetlands are improvised man-made systems, designed for adopting the principle of natural wetlands for purifying wastewaterthe elixir of life. They are used widely as a cost-effective and energy-efficient solution for treating greywater generated from different tertiary treatment sources. It provides an elaborate platform for research activities in an attempt to recycle earth's natural resources. Among the several organic impurities removal mechanisms existing in constructed wetland systems, the earth's active microbial population plays a vital role. This review deals with the recent advancements in constructed wetland systems from a microbiological perspective to (effect/ devise/ formulate) chemical and physical treatment for water impurities. It focuses on microbial diversity studies in constructed wetlands, influence of wetland media on microbial diversity and wetland performance, role of specific microbes in water reuse, removal of trace elements, some heavy metals and antibiotics in constructed wetlands. The impurities removal processes in constructed wetlands is achieved by combined interactive systems such as selected plant species, nature of substrate used for microbial diversity and several biogeochemical effected reaction cycles in wetland systems. Therefore, the correlation studies that have been conducted by earlier researchers in microbial diversity in wetlands are addressed herewith.

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Section: Wastewater Pollutantsmentioning

confidence: 99%

mentioning

confidence: 99%

Microbial population dynamics in constructed wetlands: Review of recent advancements for wastewater treatment

Rajan

Sudarsan

Nithiyanantham³

2018

Environmental Engineering Research

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“…However, it is still unknown which material is superior to enrich the functional groups of microbial community for removing OMPs. Moreover, it is well known that plant presence also affect the microbial community structures in CWs [42,43,[72][73][74]. It is yet unclear which effect (material, plant or design) would be greater when using the different tested materials.…”

Section: Discussionmentioning

confidence: 99%

New insights into the effects of support matrix on the removal of organic micro-pollutants and the microbial community in constructed wetlands

Liang

Lyu

Ramírez-Vargas

et al. 2018

Environmental Pollution

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Constructed wetlands (CWs) are an eco-friendly and cost-effective technology to remove organic micro-pollutants (OMPs) from wastewater. The support matrix is an important component in CWs as it has a primary role in the growth and development of plants and microbes. However, the roles of the support matrix in CWs in removing OMPs have not been systematically studied. Therefore, in this study, six common materials (sand, zeolite, blast iron slag, petcoke, polonite and crushed autoclaved aerated concrete (CAAC)) as support matrixes were firstly investigated by batch tests to explore their adsorption capacities to selected OMPs (ibuprofen, iohexol, tebuconazole and imazalil). Results showed that the adsorption capacities of the materials were low (at the level of μg/g) compared to well-known sorbents (at the level of mg/g), such as activated carbon and carbon nanotubes. Columns packed with the six materials, respectively, were then built up to study the effects of different materials on microbial community. In the medium-term study (66 days), the removal of four OMPs in all the columns increased by 2-58% from day 25 to day 66, and was mainly attributed to microbial degradation. Furthermore, Community-level physiological profiling (CLPP) analysis indicates that material presence shaped the microbial community metabolic function not only in the interstitial water but also in the biofilm. Overall, all the findings demonstrate that although the adsorption capacities of the common materials are low, they may be a driver to improve the removal of OMPs by altering microbial community function in CWs.

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“…CLPP is a useful tool for assessing microbial community metabolic function and functional diversity in both terrestrial and aquatic environments [41][42][43]. CLPP, also known as carbon source utilization patterns of soil microbial communities, is assessed using a Biolog-ECO micro-plate (Category NO.…”

Section: Community Level Physiological Profilingmentioning

confidence: 99%

The Effects of Different Lead Pollution Levels on Soil Microbial Quantities and Metabolic Function with/without Salix integra Thunb. Planting

Niu

Zhou

et al. 2019

Forests

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Background and Objectives: Salix integra Thunb., a fast-growing woody species, has been used in phytoremediation in recent years. It has the potential to accumulate high amounts of lead (Pb) in its growth, however, its effects on soil microbial community structure and function during its phytoextraction processes are not well understood, especially at different pollution levels. Materials and Methods: In our study, we set unplanted and planted Salix integra in areas with four levels of Pb treatments (0, 500, 1000, and 1500 mg/kg). After six months of planting, the rhizospheric soil, bulk soil, and unplanted soil were collected. Soil properties and microbes participating in nitrogen and phosphorus cycling were measured, following standard methods. Microbial metabolic functions were assessed using a Biolog-ECO microplate. Results: The bacteria (nitrogen-fixing bacteria, ammonifying bacteria, inorganic phosphorus-solubilizing bacteria, and nitrosobacteria) all increased in the 500 mg/kg treatment and decreased in the 1500 mg/kg treatment compared with the 0 mg/kg treatment, especially in rhizospheric soil. The microbial metabolisms decreased along with the increase of Pb levels, with the exception of the rhizospheric soil with a 500 mg/kg treatment. The metabolic patterns were relative to the pollution levels. The utilization of carbohydrates was decreased, and of amino acids or fatty acids was increased, in the 500 mg/kg treatment, while the opposite occurred in the 1500 mg/kg treatment. The values of soil properties, microbial quantities, and metabolic activities were higher in rhizospheric than bulk soil, while the differences between bulk and unplanted soil were different among the different Pb treatments. The soil properties had little effect on the microbial quantities and metabolic activities. Conclusions: S. integra planting and Pb levels had an interactive effect on the microbial community. In general, S. integra planting promoted microbial quantities and metabolic activity in rhizospheric soil. Lower Pb pollution increased microbial quantities and promoted the utilization of amino acids or fatty acids, while higher Pb concentrations decreased microbial quantities and metabolic activities, and promoted the utilization of carbohydrates.

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Use of two spatially separated plant species alters microbial community function in horizontal subsurface flow constructed wetlands

Cited by 29 publications

References 32 publications

Microbial population dynamics in constructed wetlands: Review of recent advancements for wastewater treatment

Microbial population dynamics in constructed wetlands: Review of recent advancements for wastewater treatment

New insights into the effects of support matrix on the removal of organic micro-pollutants and the microbial community in constructed wetlands

The Effects of Different Lead Pollution Levels on Soil Microbial Quantities and Metabolic Function with/without Salix integra Thunb. Planting

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