Accumulation of TiO2 nanoparticles in the anammox bioreactor: Their effects on treatment performance and microbial dynamics

Sari, Tuğba; Akgül, Deniz; Mertoğlu, Bülent

doi:10.1016/j.bej.2022.108595

Cited by 2 publications

(1 citation statement)

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“…When oxygen is present, the reactions at the anode are completed when electrons are accepted and transmitted to the cathode electrode (Chai et al, 2021). Classical denitrification and other methods for ridding the environment of microbiological contaminants benefit from the electrons created in this process (Sari et al, 2022). Wastewater reclamation in open systems (such as a lagoon, pond, or lake) has gotten a lot of emphasis in recent years, and self-buoyant hydroponic root CW mats have been at the center of this interest (Colares et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Role of constructed wetlands in mitigating the challenges of industrial growth and climate change impacts in the context of developing countries

Islam

Saeed

Majed

2022

Front. Environ. Sci.

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One of the most persistent issues affecting individuals in developing countries is the lack of access to safe drinking water and sanitary facilities. The adoption of centralized water, energy, and cost-intensive technology has proven ineffective in addressing the complex water-related challenges that have arisen as a consequence of growing urbanization in developing nations. Constructed wetlands have emerged as an effective wastewater treatment solution with natural applications. The fundamental goal of this study is to offer a complete overview of the wide variety of practices, uses, and investigations of constructed wetlands systems for eliminating different pollutants from wastewater in developing countries leading to placing them in the context of climate change, environmental resource planning, and sustainable wastewater treatment systems. CWs offer significant levels of treatment performances with hybrid systems achieving contaminant removal efficiencies up to 93.82% for total suspended solids, 85.65% for chemical oxygen demand, and 80.11% for ammonia nitrogen which is adequate with respect to other viable alternatives. In terms of Biological Oxygen Demand (BOD5), the highest elimination (84.06%) was achieved in hybrid systems when compared to Free water surface CWs (65.34%), Horizontal sub-surface CWs (75.1%), and Floating treatment wetland (55.29%). The maximum power density generation through the microbial fuel cell-based constructed wetlands ranges between 50 and 86 mW/m2 in Bangladesh (integrated tidal flow) and 852 mW/m3 in China (vertical flow), and the production of bioenergy has been evidenced up to 1,836.5 GJ/hector/year. Annually, wastewater treatment plant systems (WTPs) generate around a hundred times more Methane (CH4), Nitrous oxide (N2O), and carbon dioxide (CO2) than CWs. In metropolitan cities, WTPs may lead to a considerable increase in upstream land use, which could be minimized by promoting CWs in these areas. The potential utility of different CWs in protecting and preserving estuarine quality within the present regulatory framework is finally addressed in the study, emphasizing that it can balance the impacts of industrial expansions in developing countries for subsequent mitigation and adaptation to climate change.

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Section: Introductionmentioning

confidence: 99%