Recent advances biodegradation and biosorption of organic compounds from wastewater: Microalgae-bacteria consortium - A review

Chan, Sook Sin; Khoo, Kuan Shiong; Chew, Kit Wayne; Ling, Tau Chuan; Show, Pau Loke

doi:10.1016/j.biortech.2021.126159

Cited by 270 publications

(55 citation statements)

References 84 publications

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“…These results are consistent with the nutrient concentrations found in the water since the TWW plants had the lowest concentration of PO 4 3− (6.80 mg L −1 ; Table 2 ) and the highest concentration of Mg in soil (2.07 meq 100 g −1 ). The high content of P-PO 4 3− in TWW may be a result of the degradation of organic materials contained in these water sources, as it has been reported in previous research [ 71 , 72 ]. Conversely, the high Mg content has been more related to the type of rock in the subsoil [ 66 , 73 ].…”

Section: Resultsmentioning

confidence: 57%

The Impact of Treated Wastewater Irrigation on the Metabolism of Barley Grown in Arid and Semi-Arid Regions

Álvarez-Holguín

Sosa-Pérez

Ponce-García

et al. 2022

IJERPH

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The use of treated wastewater (TWW) for irrigation has gained global attention since it reduces pressure on groundwater (GW) and surface water. This study aimed to evaluate the effect of TWW on agronomic, photosynthetic, stomatal, and nutritional characteristics of barley plants. The experiment with barley was established on two bands: one band was irrigated with GW and the other with TWW. The evaluation was performed 25, 40, 60, 90, and 115 days after sowing (DAS). Results showed that irrigation with TWW increased (p < 0.01) grain yield by 54.3% and forage yield by 39.4% compared to GW irrigation. In addition, it increased plant height (PH) (p = 0.013), chlorophyll concentration index (CCI) (p = 0.006), and leaf area index (LAI) (p = 0.002). TWW also produced a positive effect (p < 0.05) in all the photosynthetic efficiency parameters evaluated. Barley plants irrigated with TWW had lower stomatal density (SD) and area (SA) (p < 0.001) than plants irrigated with GW. Plants irrigated with TWW had a higher P concentration (p < 0.05) in stems and roots and K concentration in leaves than plants irrigated with GW. We concluded that the use of TWW induced important biochemical, physiological, and agronomic changes in barley plants. Hence, the use of TWW may be a sustainable alternative for barley production in arid and semi-arid regions. This study was part of a government project, which aimed to develop a new metropolitan irrigation district with TWW. This study may contribute to the sustainability of water resources and agricultural practices in northern Mexico.

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Section: Resultsmentioning

confidence: 57%

The Impact of Treated Wastewater Irrigation on the Metabolism of Barley Grown in Arid and Semi-Arid Regions

Álvarez-Holguín

Sosa-Pérez

Ponce-García

et al. 2022

IJERPH

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“…In algal-bacterial systems, the interaction between algae and bacteria is not restricted to the exchange of carbon dioxide and oxygen but also includes the complementary exchange of metabolites [ 183 ]. The oxygen produced by the microalgae during photosynthesis helps in the growth and respiration of bacteria to degrade the pollutants present in the wastewater.…”

Section: Micropollutant or ‘Emerging Contaminant’ Removal In Algal-ba...mentioning

confidence: 99%

A comprehensive review on the use of algal-bacterial systems for wastewater treatment with emphasis on nutrient and micropollutant removal

et al. 2022

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The scarcity of water resources and environmental pollution have highlighted the need for sustainable wastewater treatment. Existing conventional treatment systems are energy-intensive and not always able to meet stringent disposal standards. Recently, algal-bacterial systems have emerged as environmentally friendly sustainable processes for wastewater treatment and resource recovery. The algal-bacterial systems work on the principle of the symbiotic relationship between algae and bacteria. This paper comprehensively discusses the most recent studies on algal-bacterial systems for wastewater treatment, factors affecting the treatment, and aspects of resource recovery from the biomass. The algal-bacterial interaction includes cell-to-cell communication, substrate exchange, and horizontal gene transfer. The quorum sensing (QS) molecules and their effects on algal–bacterial interactions are briefly discussed. The effect of the factors such as pH, temperature, C/N/P ratio, light intensity, and external aeration on the algal-bacterial systems have been discussed. An overview of the modeling aspects of algal-bacterial systems has been provided. The algal-bacterial systems have the potential for removing micropollutants because of the diverse possible interactions between algae-bacteria. The removal mechanisms of micropollutants – sorption, biodegradation, and photodegradation, have been reviewed. The harvesting methods and resource recovery aspects have been presented. The major challenges associated with algal-bacterial systems for real scale implementation and future perspectives have been discussed. Integrating wastewater treatment with the algal biorefinery concept reduces the overall waste component in a wastewater treatment system by converting the biomass into a useful product, resulting in a sustainable system that contributes to the circular bioeconomy.

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“…(Fluoride removal in the presence of an ions increased in the order PO4 3-< NO3 -< Cl-< SO4 2-< CO3 2-. This may be due to a change in pH and also because of competition between the competing ions and the fluoride ions for active sites of Centella Asiatica adsorbent powder [17].…”

Section: Effect Of Phmentioning

confidence: 99%

Fluoride Adsorption from Aqueous Solution Using Natural Adsorbents Such As Centella Asiatica

Kistan¹

2022

JPPR

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In this study carried out by means of photo-colorimetry using the SPANDS indicator at 620 nm to adsorb Fluoride ion from aqueous solution. The influence of pH was studied by altering the pH from 2 to 12 using a 0.1 Molar concentration of HCl & NaOH solution using 10 ppm Fluoride concentration of as an initial point a kinetic investigation was conducted at pH 6.90 0.10 at various time intervals. The adsorption isotherm was investigated at pH of 6.90 by changing the initial fluoride concentration from 5 to 50 mg / L. The skills of 4 different isotherms used such as Langmuir, Freundlich, Temkin, and Redlich-Peterson adsorption isotherms were examined. To elucidate the mechanism of fluoride adsorption on the surface of the adsorbent, the kinetic model's pseudo-first-order, pseudo-second-order, intra-particle diffusion, and Elovich models are employed to examine the current adsorption data to determine the related kinetic parameters. Lastly, the effects of a number competing for ions (Cl-, NO3-, SO42-, PO43-, Ca2+ and Mg2+) were detected using, 20 - 200 mg / L solution at pH 6.90 ± 0.10 over 1 hr. SEM, XRD, and FT-IR techniques were used to investigate the surface morphology and size distribution of the natural adsorbent for fluoride adsorption (Centella Asiatica). The impact of adsorbent dosage, contact time, pH, co-ions, initial fluoride concentration, and shaking speed Centella Asiatica was determined and clearly reported

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Recent advances biodegradation and biosorption of organic compounds from wastewater: Microalgae-bacteria consortium - A review

Cited by 270 publications

References 84 publications

The Impact of Treated Wastewater Irrigation on the Metabolism of Barley Grown in Arid and Semi-Arid Regions

The Impact of Treated Wastewater Irrigation on the Metabolism of Barley Grown in Arid and Semi-Arid Regions

A comprehensive review on the use of algal-bacterial systems for wastewater treatment with emphasis on nutrient and micropollutant removal

Fluoride Adsorption from Aqueous Solution Using Natural Adsorbents Such As Centella Asiatica

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