Influence of microalgae-ZnO nanoparticle association on sewage wastewater towards efficient nutrient removal and improved biodiesel application: An integrated approach

Vasistha, Shrasti; Khanra, Anwesha; Prakash, Monika

doi:10.1016/j.jwpe.2020.101711

Cited by 46 publications

(20 citation statements)

References 52 publications

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“…As a possible practical solution, hybrid treatments could be included during the secondary treatment phase of the WWTPs, which keep activated sludge and biofilms in the same reactor, ensuring a higher nutrient removal efficiency [86]. More innovative proposals such as the inoculation of microalgae associated with ZnO nanoparticles into the bioreactor, or the installation of an osmotic dynamic membrane bioreactor/nanofiltration (OsMBR/NF) system, can be considered for the near future [87,88]. With a successful reduction of the nutrient levels, the use of the WWTP effluents to flood the rice fields could be considered, with no ecological risk to the Albufera lake or to the rest of the water bodies.…”

Section: Discussionmentioning

confidence: 99%

How Agriculture, Connectivity and Water Management Can Affect Water Quality of a Mediterranean Coastal Wetland

2022

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The Natural Park of Albufera (Valencia, Spain) is an important Mediterranean coastal wetland that suffers continuous environmental effects from human activities and water uses, mainly related to agriculture and urban/industrial sewage discharges. The aim of this research was to assess the water quality of the different aquatic environments of this wetland, taking into account the connection between them, the agricultural impact and the management of irrigation water. The UE Water Framework Directive was followed in order to evaluate the ecological and trophic status of water systems. Spatial approaches were used to integrate physicochemical data into GIS vector layers to map the more problematic points of pollution. The results showed a globally eutrophic system with poor ecological potential. The wetland is nutrient-overloaded during the entire rice cultivation period. Good-quality water inputs are deficient, since the river network already has high levels of nutrients and pollutants, especially in the northern area, where river water is mixed with inappropriate effluents from wastewater treatment plants. Agriculture and water management affected the area intensively up to the Albufera lake, modulating most of the studied variables. The information gathered here can help to optimize the global study and management of the coastal Mediterranean wetlands, which are highly linked to agriculture.

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Section: Discussionmentioning

confidence: 99%

How Agriculture, Connectivity and Water Management Can Affect Water Quality of a Mediterranean Coastal Wetland

2022

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“…For example, Vasistha et al. (2020) synthesized microalgae‐ZnO nanoparticles to study the nutrient removal efficiency from sewage wastewater. They suggested that Chlorosarcinopsis sp.…”

Section: Advanced Approach For Microalgal‐based Wastewater Bioremedia...mentioning

confidence: 99%

Microalgal‐based remediation of wastewater: A step towards environment protection and management

Goswami

Agrawal

Verma

2022

Environmental Quality Mgmt

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The widespread problem of water pollution is jeopardizing the ecosystem and our health. The contamination of freshwater through anthropogenic activities and its discharge into the ecosystems leads to the generation of wastewater. Wastewater mainly contains nutrient loads and the recent emerging contaminants such as pharmaceutical wastes, drugs, micropollutants, heavy metals, pesticides, phenolic compounds, and dyes have increased and contaminated the aquatic bodies. The existence of these emerging pollutants can cause serious threats to ecosystems and humans. Thus, conventional wastewater treatment was focused on the removal of solid compounds or nutrient loads. However, it could not remove the emerging contaminants and later microalgae that are photosynthetic eukaryotic microorganisms were found to be an efficient and eco‐friendly source for the remediation of diverse kinds of wastewater. Apart from nutrient removal, the algal biomass acts as the efficient feedstock for the generation of bioenergy products. However, limited data have been published regarding the remediation of emerging pollutants through microalgae. Thus, focusing on the recent gaps, the current review provides an overview of the potential of microalgae for the remediation of nutrient loads. Critically deliberate the recent advances and detailed summary of microalgae potential for the remediation of wastewaters containing high nutrient loads especially focused on the remediation of different emerging contaminants. It highlights the advanced approaches used in the microalgae remediation process and provides comprehensive information about the different bioenergy products such as liquid, gaseous, and bioelectricity generated through the utilization of wastewater‐grown microalgae.

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“…Extreme concentrations of the heavy metals in wastewater result in lung insufficiency, bone damage, cancer, and other worse effects. Hence, application of the suitable method to remove these toxic metals is highly indispensable [12][13][14]. Algae are one of the biosorbents of the toxic metals owing to its ubiquitous nature.…”

Section: Introductionmentioning

confidence: 99%

Removal of Toxic Metal Presence in the Wastewater and Production of the Biomass from Microalgae Chlorella sp.

Deepak

Anbarasu²,

Velusamy

2022

Journal of Nanomaterials

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Removal of high toxic metals from the wastewater was one of the mandate options to avoid the environmental pollution caused by the wastewater plant. Microalgae cultivation on the wastewater was one of the hopeful methods to convert the waste into useful by-product. In this study, the Chlorella sp. was used to remove the presence of the total nitrogen (TN) and total phosphorous (TP) in the wastewater. Added to the above, the biomass and lipids of the Chlorella sp. were examined with respect to the incubation time. Chlorella sp. was cultivated using BG11 medium. Here, two different types of wastewater had been used, one from leather industry and other priggery waste. The respective ratio of leather and piggery wastewater used in the current study was 0 : 100, 25 : 75, 50 : 50, 75 : 25, and 100 : 0. The total percentage of the nitrogen and phosphorous removal by the microalgae within 14 days was determined. Based on the findings, it is clear that Chlorella sp. L33 was highly efficient to absorb the nitrate and phosphorous content in the wastewater. With regard to the biomass production, the priggery wastewater treated reported the maximum biomass for 100 μmol/L with 0.55 g/L. However, the 100 μmol/L has higher pH content than other test samples. By varying the ratio of the wastewater, the removals rates can be improved.

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Influence of microalgae-ZnO nanoparticle association on sewage wastewater towards efficient nutrient removal and improved biodiesel application: An integrated approach

Cited by 46 publications

References 52 publications

How Agriculture, Connectivity and Water Management Can Affect Water Quality of a Mediterranean Coastal Wetland

How Agriculture, Connectivity and Water Management Can Affect Water Quality of a Mediterranean Coastal Wetland

Microalgal‐based remediation of wastewater: A step towards environment protection and management

Removal of Toxic Metal Presence in the Wastewater and Production of the Biomass from Microalgae Chlorella sp.

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