Removal of nitrogen and phosphorus from agro-industrial wastewater by using microalgae collected from coastal region of peninsular Malaysia

Bhuyar, Prakash; Farez, Fakhrul; Hasbi, Ab. Rahim Mohd; Pragas, Maniam Gaanty; Nagarajan, G.

doi:10.33472/afjbs.3.1.2021.58-66

Cited by 22 publications

(14 citation statements)

References 24 publications

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“…The decrease in conductivity results in the decrease in conductivity in nutrient solution 57 . Bhuyar et al also reported that, as Chlorella utilized the dissolved solids, the TDS and salinity decreased 58 . Since the dissolved solids also plays a role in the salinity of the medium, salinity decreased at the same time with TDS.…”

Section: Resultsmentioning

confidence: 95%

“…57 Bhuyar et al also reported that, as Chlorella utilized the dissolved solids, the TDS and salinity decreased. 58 Since the dissolved solids also plays a role in the salinity of the medium, salinity decreased at the same time with TDS. In the Figure 2f, the relation between dissolved oxygen and microalgal growth has presented.…”

Section: Relation Between Microalgal Growth and Other Chemical Stimul...mentioning

confidence: 99%

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Monitoring microalgal growth of Chlorella minutissima with a new all solid‐state contact nitrate selective sensor

Balkanli

Işıldak

İnan

et al. 2022

Biotechnology Progress

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As third generation feedstock, microalgae are microorganisms that can grow only in the optimum conditions. There are parameters including the concentration of macro and microelements in nutrient solution, pH, temperature and light intensity that have significant impact on microalgal growth. In recent years, various sensing devices have been developed for sensitive measurement of these parameters during microalgal growth. In this study, a new potentiometric nitrate selective sensor was developed to indicate the nitrate uptake of microalgae and the effect of nitrate nutrient on microalgal growth, specifically, and this sensor was successfully applied to determine nitrate concentration in medium during microalgal growth. Moreover, the effects of nitrate, carbonate and phosphate concentration in the growth medium on biomass production of Chlorella minutissima were investigated by using Box–Behnken design method, and optimum conditions were determined for the highest biomass production of microalgae. As a result of the experiments, it was seen that the highest C. minutissima production was achieved using the medium consist of 2.63 g/L NaNO3, 0.35 g/L Na2CO3 and 0.4 g/L KH2PO4. Statistically, it was observed that there was a proportional relationship between the microalgae production and investigated parameters such as carbon, nitrogen and phosphate amounts of culture mediums. The electrode showed a wide linear range between 1.0 × 10−1 and 5.0 × 10−5 M with a detection limit of the 5 × 10−6 M and the response time was found as 10 s. The results showed that developed nitrate selective sensor could be successfully applied for continuous measurement of nitrate in microalgal productions at reduced cost.

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Section: Resultsmentioning

confidence: 95%

Section: Relation Between Microalgal Growth and Other Chemical Stimul...mentioning

confidence: 99%

Monitoring microalgal growth of Chlorella minutissima with a new all solid‐state contact nitrate selective sensor

Balkanli

Işıldak

İnan

et al. 2022

Biotechnology Progress

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“…Referring to Figures 2c and 3c, the ammonia removal was better for the POME treated with Chlorella pyrenoidosa (single group) and Chlorella vulgaris + Chlorella pyrenoidosa (combine group) due to the lower removal ratio of ammonia removal by Chlorella vulgaris (Bhuyar et al, 2021).…”

Section: Discussionmentioning

confidence: 97%

Performance of Chlorella sp. and Multicultural Bacteria in Removing Pollutants from Nutrient-Rich Wastewater

Azni

Abidin

Noorain

et al. 2022

ASEAN J. Chem. Eng.

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The most common method of treating palm oil mill effluent (POME) is by using various types of bacteria communities. However, the utilization of microalgae in consuming the high nutrient content in wastewater offer additional benefit, particularly for CO2 sequestration. In this study, we proposed to evaluate the performance of multicultural bacteria obtained from municipal wastewater and Chlorella sp. for batch treatment of POME at different COD concentrations (ranges between 600 to 1,300 mg/L), microalgae species (C. vulgaris and C. pyrenoidosa) and speed of agitation (0 and 150 rpm). The results showed that between the bacteria and microalgae that are involved in POME treatment, microalgae give high removal of colour (93%) and ammoniacal nitrogen (95%). As for the COD and phosphate removal, both microorganisms show comparable performances. It was observed that C. pyrenoidosa was able to remove more colour compared to C. vulgaris where higher lipid yield production was obtained (47.6%). However, there is no significant impact of agitation on pollutant removal. This study also reveals that co-cultivation of different microalgae species does not affect the efficiency of the system. This study provides an important insight into developing an efficient and environmentally friendly method to treat wastewater by incorporating green technology in the treatment system

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“…C. vulgaris has also been demonstrated to adapt to highly concentrated municipal wastewater streams generated by the dewatering of sludge from primary- and secondary-settling (centrate), as proposed by Zhou et al [ 7 ]. Besides municipal, urban or domestic wastewaters, several studies have shown the great bioremediation potential of this microalga on nutrients’ removal from hydroponic greenhouse cultivation wastewaters, piggery wastewaters, textile wastewaters, paper industry effluents, palm oil mill effluents, riboflavin manufacturing wastewaters, and fertiliser industrial wastewaters, among others [ 8 , 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Microalgal Cultures for the Bioremediation of Urban Wastewaters in the Presence of Siloxanes

Salgado

Gonçalves

Sánchez-Soberón

et al. 2022

IJERPH

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Microalgae are widely used in the bioremediation of wastewaters due to their efficient removal of pollutants such as nitrogen, phosphorus, and contaminants of emerging concern (CECs). Siloxanes are CECs that reach wastewater treatment plants (WWTPs), leading to the production of biogas enriched with these compounds, associated with the breakdown of cogeneration equipment. The biological removal of siloxanes from wastewaters could be a sustainable alternative to the costly existing technologies, but no investigation has been performed using microalgal cultures for this purpose. This study evaluated the ability of Chlorella vulgaris to bioremediate primary (PE) and secondary (SE) urban effluents and remove volatile methylsiloxanes (VMSs). C. vulgaris grew successfully in both effluents, and approximately 86% of nitrogen and 80% of phosphorus were efficiently removed from the PE, while 52% of nitrogen and 87% of phosphorus were removed from the SE, and the presence of VMSs does not seem to have a negative influence on nutrient removal. Three out of the seven of the analysed VMSs were detected in the microalgal biomass at the end of the PE assay. However, dodecamethylcyclohexasiloxane (D6) was the one that accumulated to a greater extent, since 48% of the initial mass of D6 was detected in the biomass samples. D6 is one of the most lipophilic VMSs, which might contribute to the higher adsorption onto the surface of microalgae. Overall, the results indicate C. vulgaris’ potential to remove specific VMSs from effluents.

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Removal of nitrogen and phosphorus from agro-industrial wastewater by using microalgae collected from coastal region of peninsular Malaysia

Cited by 22 publications

References 24 publications

Monitoring microalgal growth of Chlorella minutissima with a new all solid‐state contact nitrate selective sensor

Monitoring microalgal growth of Chlorella minutissima with a new all solid‐state contact nitrate selective sensor

Performance of Chlorella sp. and Multicultural Bacteria in Removing Pollutants from Nutrient-Rich Wastewater

Microalgal Cultures for the Bioremediation of Urban Wastewaters in the Presence of Siloxanes

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