Nutrient Removal from Wastewater Using Microalgae: A Kinetic Evaluation and Lipid Analysis

Babu, Anjana; Katam, Keerthi; Gundupalli, Marttin Paulraj; Bhattacharyya, Debraj

doi:10.2175/106143017x15054988926299

Cited by 11 publications

(4 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…POME has been successfully used to cultivate Chlamydomonas sp. [11], Chlorella sorokiniana [12], Botryococcus brauni [13], and a mixed culture of microalgae [14]. However, Kayombo et al, in 2003, reported that a higher concentration of POME would inhibit microalgae growth due to its biotic and abiotic factors.…”

Section: Introductionmentioning

confidence: 99%

Post-Treatment of Palm Oil Mill Effluent Using Immobilised Green Microalgae Chlorococcum oleofaciens

et al. 2021

View full text Add to dashboard Cite

Microalgae immobilisation can be a long-term solution for effective wastewater post-treatment. This study was conducted to evaluate the ability of immobilised Chlorococcum oleofaciens to remove contaminants from palm oil mill effluent (POME) until it complies with the POME discharge standard. First, the native dominating green microalga was isolated from a polishing POME treatment pond. Then, the microalgae cells were immobilised on sodium alginate beads and cultivated in a lab-scale-treated POME to treat it further. The immobilised microalgae cells demonstrated a high removal of total phosphorus, total nitrogen, ammonia nitrogen, and soluble chemical oxygen demand with 90.43%, 93.51%, 91.26%, and 50.72% of reduction, respectively. Furthermore, the growth rate of the microalgae fitted nicely with the Verhulst logistical model with r2 of more than 0.99, indicating the model’s suitability in modelling the growth. Thus, we concluded that the species can be used for post-treatment of effluents to remove TP, TN, and ammonia nitrogen from palm oil mills until it complies with the POME effluent discharge standard. However, during the process, degradation of the beads occurred and the COD value increased. Therefore, it is not suitable to be used for COD removal.

show abstract

Section: Introductionmentioning

confidence: 99%

Post-Treatment of Palm Oil Mill Effluent Using Immobilised Green Microalgae Chlorococcum oleofaciens

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The data used for calibration and validation covers a diverse set of input parameters for Carbon (C), Nitrogen (N), Phosphorus (P), light (I) and temperature (T). For cost estimation, feed water concentrations of kitchen wastewater in the Indian Institute of Technology (IIT) Hyderabad (IITH) are taken from (Babu et al 2017).…”

Section: Resultsmentioning

confidence: 99%

A techno-economic assessment of nutrient recovery from wastewater using microalgae: scenario in India collected from published literature

Fathima

Chatterjee

2022

Water Science and Technology

View full text Add to dashboard Cite

The true potential of the microalgae-based wastewater treatment (MWT) process is determined based on whether the process will provide a positive energy output and whether it is economically viable. The objectives of this study are dynamic modelling of microalgae growth based on initial wastewater concentration, temperature, solar radiation and techno-economic assessment for an MWT scheme for application in a hot, dry climate. Through reference to relevant literature data on MWT in the Indian subcontinent, a selection of appropriate microalgal species Chlorella and Scenedesmus was made. The dynamic model developed was successfully calibrated and validated using independent experimental data collected from published literature. Cost of production of bio-crude from microalgae grown in a hybrid photo bioreactor and pond system in kitchen wastewater of Indian Institute of Technology, Hyderabad was calculated. A break-even selling price (BESP) of $0.549/kg was obtained for the microalgae biomass. The cost of production of 1 L bio-crude was 0.96 $ (Rs 69–74), which is comparable with crude oil cost. The model developed can be used by practising engineers to predict biomass growth and nutrient removal, thereby achieving a break-even point for cost efficiency.

show abstract

“…Some algal species can release these organic compounds under normal conditions, some in response to low nutrient stress or other stressful conditions (e.g., unfavorable light, pH, or temperature), and during the decay of algal cells (Villacorte et al, 2015). The reactors with pure algal consortium showed an increment in effluent organic carbon and nutrient concentrations (Babu et al, 2018;. According to the literature, the C/N ratio of 6:1 was reported as the optimal value for the highest nutrient removal for algal-bacterial culture in domestic wastewater treatment (Xu et al, 2017;Yan et al, 2012).…”

Section: Biomass On Sponge Mediamentioning

confidence: 99%

Start‐up of a trickling photobioreactor for the treatment of domestic wastewater

Katam

Tiwari

Shimizu

et al. 2021

Water Environment Research

Self Cite

View full text Add to dashboard Cite

A stand-alone trickling photobioreactor (TPBR) was seeded with activated sludge and microalgae to treat domestic wastewater. The TPBR was started-up at 12-h hydraulic retention time at room temperature with 12:12 h light:dark cycle. The light was provided by blue LED strips. The reactor has a total volume of 30 L and is divided into six segments. Each segment is 30 cm long and has a diameter of 15 cm. Each segment was packed with polyurethane foam sponge cubes (2.5 × 2.5 × 2.5 cm 3 ) with 40% occupancy. The chemical oxygen demand (COD), total organic carbon (TOC), total nitrogen (TN), and phosphorus (P) of domestic wastewater varied in the range of 164-256 mg/L, 84.4-133.8 mg/L, 34.2-55.6 mg/L, and 24.7-39.3 mg/L, respectively, during this period. The COD, TOC, TN, and P concentrations in the effluent after 45 days of operation were 30.24 ± 3.36 mg/L, 7.69 ± 0.09 mg/L, 16.67 ± 0.39 mg/L, and 17.48 ± 0.5 mg/L, respectively. The chlorophyll-to-biofilm biomass ratio increased during the experimental period. The above results indicate that the algal-bacterial symbiotic relationship is beneficial for carbon and nutrient removal from domestic wastewater. © 2021 Water Environment Federation • Practitioner points 1. Trickling photobioreactor works on natural ventilation and has low power requirements and a small footprint. 2. The porous sponge media helped in immobilizing and subsequent harvesting of biomass. 3. The reactor conditions favored the growth of diatoms (brown algae) over green algae.

show abstract

Nutrient Removal from Wastewater Using Microalgae: A Kinetic Evaluation and Lipid Analysis

Cited by 11 publications

References 30 publications

Post-Treatment of Palm Oil Mill Effluent Using Immobilised Green Microalgae Chlorococcum oleofaciens

Post-Treatment of Palm Oil Mill Effluent Using Immobilised Green Microalgae Chlorococcum oleofaciens

A techno-economic assessment of nutrient recovery from wastewater using microalgae: scenario in India collected from published literature

Start‐up of a trickling photobioreactor for the treatment of domestic wastewater

Contact Info

Product

Resources

About