Wastewater remediation by optimum dissolve oxygen enhanced by macrophytes in constructed wetlands

Rehman, Fahad; Pervez, Arshid; Mahmood, Qaisar; Nawab, Bahadar

doi:10.1016/j.ecoleng.2017.01.030

Cited by 18 publications

(4 citation statements)

References 28 publications

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“…In 2017, an paper was published [26], in which, the authors present a WSN solution implemented to monitor environmental conditions, related to temperature and light intensity variations, and how these modified the level of dissolved oxygen added by Typha latifolia and Phragmites australis in wetlands. The wetlands under analysis, in the paper described, are constructed wetlands (CW's), for the discharge of wastewater.…”

Section: Resultsmentioning

confidence: 99%

The internet of things in high andean wetland monitoring, historical review approach

2021

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The internet of things (IoT) has allowed important technological advances for monitoring and telemetry, thanks to the fact that IoT-based systems allow to obtain information in large areas, far from urban environments, and where low energy monitoring systems are required, features that are consistent with the requirements for high Andean wetlands telemetry. The monitoring of environmental variables, such as water quality in high Andean wetlands, is a topic of great importance for the scientific community, since, if the knowledge of the dynamics of the wetlands is improved, it is possible to optimize the decision making for their conservation. In that sense, to know the application of the IoT in this type of wetlands at a global level, this work presents a review of the literature related to the use of the IoT in the monitoring of high Andean wetlands. In order to carry out a historical review, a methodology was proposed under some guiding questions, which allowed designing a structure for background searches. Both the questions and the structure guided the search process from macro areas, such as IoT and environment, to micro areas, such as IoT applications in wetland monitoring. Finally, the review concluded that IoT has not been applied in high Andean wetland monitoring.

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Section: Resultsmentioning

confidence: 99%

The internet of things in high andean wetland monitoring, historical review approach

2021

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“…The oxygen released by the plants in constructed wetlands is a byproduct of photosynthesis and therefore, is associated with the vegetative growth in plants. This oxygen plays significant role in the degradation of organic matter in the wastewater . Thus, the efficiency of constructed wetlands can be enhanced if their substratum is enriched with oxygen either by controlling the environmental conditions for the plants or by augmenting the plant growth using PGPR.…”

Section: Resultsmentioning

confidence: 99%

Plant Growth Promoting Rhizobacteria Impact on Typha latifolia and Phragmites australis Growth and Dissolved Oxygen

Rehman

Pervez

Khattak

et al. 2018

CLEAN Soil Air Water

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The current study is designed to investigate the impact of plant growth promoting rhizobacteria (PGPR) on the growth of Typha latifolia and Phragmites australis and the consequent impact on oxygen concentration in their rhizospheres. Initially, uninoculated plants are tested for the optimum temperature and light intensity combination by exposing them to sixteen combinations. An automated monitoring system for temperature and light intensity is deployed at the experimentation site. The PGPR strains T2, T5, and T7 collected from National Agriculture Research Council, Pakistan, are used to inoculate the plants and analyzed for number of leaves, fresh plant biomass, total chlorophyll, and oxygen concentration in their rhizosphere.The results indicate that the strain T7 increased chlorophyll content, number of leaves, and fresh plant biomass in T. latifolia and P. australis. The oxygen concentration is also enhanced significantly in the rhizosphere of both plants. However, strains T2 and T5 are not observed to be influencing the growth of T. latifolia and P. australis. Moreover, the enhanced oxygen concentration in the plants' rhizosphere is observed to significantly reduce the time consumption for achieving over 90% chemical oxygen demand and biochemical oxygen demand removal efficiency. Hence, it is determined that the efficiency of constructed wetlands can be improved by augmenting the rhizospheric oxygen using PGPR to accelerate the plant development. The technology has practical implications and potential to be scaled up in future.

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“…In addition, the capability of improving dissolved oxygen, competing with microorganisms for food and sunlight and the physical filtration capacity using the dense root system make them more efficient in treating the various types of wastewater efficiently. Macrophytes are proficient in transforming oxygen through roots into the constructed wetland systems, which can accelerate the organic waste degradation and reduce the pollutant loads [62]. On the basis of previous studies, macrophytes can directly absorb organic matter [63] and can also reduce sunlight penetration [64] into the wastewater treatment systems, thereby reducing the establishment and multiplication of pathogenic microorganisms and supressing harmful algal blooming.…”

Section: Aquatic Macrophytesmentioning

confidence: 99%

Floating Aquatic Macrophytes in Wastewater Treatment: Toward a Circular Economy

Sayanthan,

Hasan,

Abdullah

2024

Water

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Floating aquatic macrophytes have a high level of proficiency in the removal of various contaminants, particularly nutrients, from wastewater. Due to their rapid growth rates, it is imperative to ensure the safe removal of the final biomass from the system. The ultimate macrophyte biomass is composed of lignocellulose and has enhanced nutritional and energy properties. Consequently, it can serve as a viable source material for applications such as the production of bioenergy, fertilizer and animal feed. However, its use remains limited, and in-depth studies are scarce. Here, we provide a comprehensive analysis of floating aquatic macrophytes and their efficacy in the elimination of heavy metals, nutrients and organic pollutants from various types of wastewater. This study offers a wide-ranging scrutiny of the potential use of plant biomasses as feedstock for bioenergy generation, focusing on both biochemical and thermochemical conversion processes. In addition, we provide information regarding the conversion of biomass into animal feed, focusing on ruminants, fish and poultry, the manufacture of fertilizers and the use of treated water. Overall, we offer a clear idea of the technoeconomic benefits of using macrophytes for the treatment of wastewater and the challenges that need to be rectified to make this cradle-to-cradle concept more efficient.

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Wastewater remediation by optimum dissolve oxygen enhanced by macrophytes in constructed wetlands

Cited by 18 publications

References 28 publications

The internet of things in high andean wetland monitoring, historical review approach

The internet of things in high andean wetland monitoring, historical review approach

Plant Growth Promoting Rhizobacteria Impact on Typha latifolia and Phragmites australis Growth and Dissolved Oxygen

Floating Aquatic Macrophytes in Wastewater Treatment: Toward a Circular Economy

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