Using an Algal Photo-Bioreactor as a Polishing Step for Secondary Treated Wastewater

Elawwad, Abdelsalam; Karam, Ahmed; Zaher, Khaled

doi:10.15244/pjoes/68426

Cited by 29 publications

(13 citation statements)

References 19 publications

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“…He published (42) articles in peer-reviewed journals with a total impact factor of (188.31). According to Google scholar, his H-index is (18) and his research work was cited (676) time. Additionally, he presented his research work in more than 20 national and international workshops and conferences covering nanotechnology, renewable energy and biomedical sciences.…”

mentioning

confidence: 99%

Recent advances in dye and metal ion removal using efficient adsorbents and novel nano-based materials: an overview

2021

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mentioning

confidence: 99%

Recent advances in dye and metal ion removal using efficient adsorbents and novel nano-based materials: an overview

2021

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“…The release of cellular increased NH3-N concentration; therefore, more NH3-N was available for algal cells. In photo-bioreactor with continuous system (hydraulic retention time, HRT: 8.5 day; 12.1 day; and 16.1 day), ammonia removal efficiency reaches 85% [14]. This value is lower than the batch system for this study.…”

Section: Ammonia-n Removalmentioning

confidence: 57%

Microalgae production using photo-bioreactor with intermittent aeration for municipal wastewater substrate and nutrient removal

Afifah

Suryawan

Sarwono

2020

CST

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Microalgae has emerged as a promising approach for removing substrate and nutrient from wastewater with the concomitant biofuel production. The substrate and nutrient removal are influenced by several factors such as C/N ratio, F/M ratio, pH, and DO. This study aims to determine the efficiency of substrate and nutrient removal with the growth rates of microalgae and biomass by varying the addition of aeration and substrate. Intermittently aerated reactors were used with the flow rate of 14 L/minute. The batch reactors were prepared by adding glucose substrate of 50 mg/L (Ra0A), 100 mg/L (Ra0B), and 150 mg/L (Ra0C) without aeration; 50 mg/L (Ra12A), 100 mg/L (Ra12B), and 150 mg/L (Ra12C) with 12-hour aeration, and 50 mg/L (Ra24A), 100 mg/L (Ra24B), and 150 mg/L (Ra24C) with 24-hour aeration. The substrate removal, expressed as chemical oxygen demand (COD) in the reactor with aeration, showed the efficiency of 73.88% ± 2.05 (12-hour aeration), 75.2% ± 3.97 (24hours aeration), and 69.86% ± 5.69(without aeration). Nutrient removal as ammonia-N (NH3-N) gave high removal value of 98.3% ± 0.11 and the removal of nutrient as phosphate (PO3-4) showed the efficiency of 54.3% ± 0.1. The growth rate of microalgae and biomass exhibited the highest value in Ra24C reactor with the values ??of 0.0229/day and 0.1295/day, respectively. The pH values ??indicated a shift from normal to alkaline while DO values ??increased by the addition of 12 and 24-hour aeration.

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“…Gas hold up in the down-comer significantly influences the fluid dynamics of the airlift reactor thus forcing the liquid downwards The external-loop which is a draft tube confers certain advantages to the airlift bioreactor, namely, preventing bubble coalescence by directing them in one direction; distributing shear stresses more evenly throughout the reactor. This exposes more MCs to the nutrients, minerals, volatile organic compounds and a host of other pollutants for sequestration and for cell growth; enhancing the cyclical movement of fluid, thus increasing mass and heat transfer rates [70][71][72].…”

Section: Closed Bioreactor (Cbr) Systemsmentioning

confidence: 99%

Emerging Trends in Wastewater Treatment Technologies: The Current Perspective

Armah¹,

Chetty²,

Adedeji³

et al. 2021

Promising Techniques for Wastewater Treatment and Water Quality Assessment

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The quality of freshwater and its supply, particularly for domestic and industrial purposes are waning due to urbanization and inefficient conventional wastewater treatment (WWT) processes. For decades, conventional WWT processes have succeeded to some extent in treating effluents to meet standard discharge requirements. However, improvements in WWT are necessary to render treated wastewater for re-use in the industrial, agricultural, and domestic sectors. Three emerging technologies including membrane technology, microbial fuel cells and microalgae, as well as WWT strategies are discussed in this chapter. These applications are a promising alternative for manifold WWT processes and distribution systems in mitigating contaminants to meet acceptable limitations. The basic principles, types and applications, merits, and demerits of the aforementioned technologies are addressed in relation to their current limitations and future research needs. The development in WWT blueprints will augment the application of these emerging technologies for sustainable management and water conservation, with re-use strategies.

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Using an Algal Photo-Bioreactor as a Polishing Step for Secondary Treated Wastewater

Cited by 29 publications

References 19 publications

Recent advances in dye and metal ion removal using efficient adsorbents and novel nano-based materials: an overview

Recent advances in dye and metal ion removal using efficient adsorbents and novel nano-based materials: an overview

Microalgae production using photo-bioreactor with intermittent aeration for municipal wastewater substrate and nutrient removal

Emerging Trends in Wastewater Treatment Technologies: The Current Perspective

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