Hydraulic Retention Time Influence on Improving Flocculation in the Activated Sludge Processes Through Polyelectrolytes

Almeida‐Naranjo, Cristina E.; Espinoza-Montero, Patricio J.; Muñoz-Rodríguez, Marcelo I.; Villamar-Ayala, Cristina Alejandra

doi:10.1007/s11270-017-3427-0

Cited by 10 publications

(4 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fiber lengths in three size ranges follow a gamma distribution pattern, with a 69.72% overlap among them, notably more pronounced for mesh 20-30 (90.08%) and mesh 30-40 (79.07%) [14]. P-OPEFBF from bio lters (Øint = 8.1 cm, h = 100 cm) operated at two lter bed heights (90 cm, P1, and 60 cm, P2) for synthetic wastewater treatment, following the formulation by Almeida-Naranjo et al [15].…”

Section: Methodsmentioning

confidence: 99%

A circular bioeconomy approach for post-bioadsorbent materials from the removal of domestic wastewater contaminants as potential reinforcements

Almeida-Naranjo,

Aguilar,

Valle

et al. 2024

Preprint

Self Cite

View full text Add to dashboard Cite

The study evaluated the performance of raw oil palm empty fruit bunch fibers (R-OPEFBF) within three different size ranges (250–425, 425–600, 600–800 µm) both before and after their utilization in biofiltration processes (as post-adsorbents, P-OPEFBF) to reinforce a polymer matrix of acrylic resin. The research examined the changes in R-OPEFBF composition and morphology caused by microorganisms in biofilters and their impact on the mechanical properties of the composites. Smaller R-OPEFBF particles (250–425 µm) demonstrated superior mechanical performance. Additionally, composites with P-OPEFBF displayed significant enhancements in mechanical properties (3.9–40.3%) compared to those with R-OPEFBF. The combination of the three fiber sizes improved the mechanical behavior of the composites, indicating the potential for both R-OPEFBF and P-OPEFBF as reinforcement materials in composite applications.

show abstract

Section: Methodsmentioning

confidence: 99%

A circular bioeconomy approach for post-bioadsorbent materials from the removal of domestic wastewater contaminants as potential reinforcements

Almeida-Naranjo,

Aguilar,

Valle

et al. 2024

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…The synthetic domestic wastewater was prepared based on the composition defined by Almeida Naranjo et al (2017) [29]. It was prepared daily to preserve its characteristics.…”

Section: Wastewater Characterizationmentioning

confidence: 99%

From Renewable Biomass to Water Purification Systems: Oil Palm Empty Fruit Bunch as Bio-Adsorbent for Domestic Wastewater Remediation and Methylene Blue Removal

Almeida-Naranjo,

Gallegos,

Domínguez

et al. 2023

Water

View full text Add to dashboard Cite

Oil palm empty fruit bunch fibers (OPEFBF), in three size ranges (small: 250–450 µm, medium: 450–600 µm, large: 600–800 µm), were investigated as a filter-bed material in biofilters for the removal of organic matter and nutrients. After saturation, these fibers (post) were used in the removal of methylene blue through batch processes. The batch adsorption tests included optimizing the adsorbent dosage (0.5–32.0 g/L) and contact time (2.5–60.0 min). Experimental data were fitted to various kinetic/isotherm models. Instrumental characterization of both raw and post fibers was conducted. Post fibers underwent morphological/compositional changes due to the presence of microorganisms and their byproducts. Efficiencies reached up to 94% for chemical oxygen demand (COD), 88.4% for total nitrogen and 77.2% for total phosphorus. In batch adsorption, methylene blue removal exceeded 90%, underscoring the effectiveness of small raw OPEFBF and large post OPEFBF. Kinetic models indicated that raw OPEFBF better fit the pseudo-first-order model, while post OPEFBF better fit the pseudo-second-order model. Both types of OPEFBF showed a good fit with the Freundlich model (higher R2, lower χ2 and SSE). Particularly, large post OPEFBF stood out as the most efficient adsorbent, achieving a maximum adsorption capacity of 12.02 mg/g for methylene blue. Therefore, raw/post OPEFBF could be an alternative to remove contaminants from wastewater.

show abstract

“…Synthetic domestic wastewater was prepared according with the procedure proposed by Almeida-Naranjo et al [27]. The synthetic domestic wastewater components (34.0 mg L −1 of gelatin, 100.0 mg L −1 of starch, 171.0 mg L −1 of sugar, 200.0 mg L −1 of milk powder, 44.5 mg L −1 of K 2 HPO 4 , 150.0 mg L −1 of NaHCO 3 , 74.2 mg L −1 of (NH 4 ) 2 SO 4 and 3.0 mg L −1 of MgSO 4 ) were dissolved by magnetic stirring in 500 mL of hot tap water (40 • C).…”

Section: Wastewater Characteristicsmentioning

confidence: 99%

Heliconia stricta Huber Behavior on Hybrid Constructed Wetlands Fed with Synthetic Domestic Wastewater

Almeida‐Naranjo

Guachamín

Guerrero

et al. 2020

Water

Self Cite

View full text Add to dashboard Cite

Constructed wetlands (CWs) represent a highly efficient, eco-friendly and economic alternative for wastewater treatment in decentralized contexts. The adequate selection of the plants used in CWs plays a decisive role in the successful implementation and operation of this technology type. In this work, we studied the behavior of a native tropical plant (Heliconia stricta Huber) for the removal of organic matter and nutrients within a hybrid CW system fed with synthetic domestic wastewater. This hybrid system was composed of two wetlands, a vertical surface flow (VSF-CW) and a horizontal subsurface flow (HSSF-CW), connected in series and being operated with nominal hydraulic loading rates of 12 and 9 mm day−1, respectively. Results evidenced nitrification (nitrite concentration increased up to three times) but not denitrification because nitrate concentration increased in the final effluent. The average removal efficiencies were 86.8%, 96.4%, and 57.0%, for COD, NH4+ and PO43−, respectively. On the other hand, the apical height, basal diameter, leaf length and width increased in relation to initial measurements (between 0.6–7.1%) in plants of both CWs, which demonstrated the ability of the plants to adapt to the operating conditions of the system. This promising performance observed when using Heliconia stricta Huber opens the need for further research and could be particularly interesting in CWs used in tropical areas.

show abstract

Hydraulic Retention Time Influence on Improving Flocculation in the Activated Sludge Processes Through Polyelectrolytes

Cited by 10 publications

References 18 publications

A circular bioeconomy approach for post-bioadsorbent materials from the removal of domestic wastewater contaminants as potential reinforcements

A circular bioeconomy approach for post-bioadsorbent materials from the removal of domestic wastewater contaminants as potential reinforcements

From Renewable Biomass to Water Purification Systems: Oil Palm Empty Fruit Bunch as Bio-Adsorbent for Domestic Wastewater Remediation and Methylene Blue Removal

Heliconia stricta Huber Behavior on Hybrid Constructed Wetlands Fed with Synthetic Domestic Wastewater

Contact Info

Product

Resources

About