Green Approach in the Bio-removal of Heavy Metals from wastewaters

Gani, Paran; Sunar, Norshuhaila Mohamed; Matias-Peralta, Hazel Monica; Latiff, Ab Aziz Abdul; Parjo, Umi Kalthsom; Oyekanmi, Adeleke Abdulrahman

doi:10.1051/matecconf/201710306007

Cited by 19 publications

(7 citation statements)

References 13 publications

(22 reference statements)

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“…The reduction of high levels of pollutants in water can be observed in the literature that tested different sources of these pollutants through the use of different species of microalgae. Gani et al (2017) reported the high efficiency of the algae Botryococcus sp. in the removal of Cd, Zn, Fe, and Mn compared to a control group (wastewater without algae); in household wastewater, Zn, Fe, and Mn were removed by up to 71.5%, 51.2%, 83.5%, and 97.2%, respectively; and in food processing wastewater, the concentration of these metals was reduced by up to 64.4%, 53.3%, 52.9%, and 26.7%, respectively.…”

Section: Discussionmentioning

confidence: 99%

Phycoremediation of fish farm wastewater by Chlorella sorokiniana and autochthonous microalgae

Carvalho

Santos

Ansilago

et al. 2021

RSD

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With the disorderly increase in global environmental problems, the cultivation of aquatic organisms is a promising path for sustainable food production. The quality of water, both at the entrance and exit of the production of aquatic animals, needs to be maintained following the parameters specified by local legislation. This study aimed to investigate the removal of contaminants from fish farming wastewater associated with the production of freshwater microalgae biomass. Six completely randomized treatments were used in triplicate: with the addition of microalgae C. sorokiniana in fish farm wastewater (W+Cs), the addition of C. sorokiniana in wastewater enriched with NPK fertilizing (W+F+Cs) or sugarcane vinasse (W+V+Cs), only wastewater (W), wastewater supplemented with fertilizer (W+F) or vinasse (W+V). The wastewater was used in natura to allow the development of autochthonous microalgae. The microalgae C. sorokiniana grew rapidly in effluents enriched with NPK and vinasse. After 28 days of bioassay, the concentrations of several contaminants in the water were reduced: zinc (20 to 88%), lead (5 to 83%), aluminum (56 to 75%), manganese (56 to 72%), cadmium (9 to 52%), calcium (16 to 24%) and magnesium (12 to 33%). Our results indicated that the production of microalgae biomass can be integrated with the treatment of fish farming effluents to reduce the environmental burden and increase the economic bonus for adopting a sustainable production method. However, our results also indicated the importance of introducing a microalgae strain with high productive performance and supplementing the wastewater to obtain rapid biomass.

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Section: Discussionmentioning

confidence: 99%

Phycoremediation of fish farm wastewater by Chlorella sorokiniana and autochthonous microalgae

Carvalho

Santos

Ansilago

et al. 2021

RSD

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“…Recently algae-based strategies for the removal of toxic minerals such as arsenic (As), bismuth (Bi), bromium (Br), cadmium (Cd), chromium (Cr), mercury (Hg) and lead (Pb) have also been reported individually or in a mixture, and some commercial applications have been initiated [54][55][56]. Therefore, a sustainable closed loop microalgae-mediated CO 2 sequestration system could be integrated with biogas generation infrastructure after optimization of algal cultivation system and key process parameters, and recovery of novel bioproducts from harvested microalgal biomass.…”

Section: Microalgaementioning

confidence: 99%

Contribution of Anaerobic Digestion Coupled with Algal System towards Zero Waste

Machineni¹,

Rao²,

Rao³

2021

Biogas - Recent Advances and Integrated Approaches

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Global environmental protection is of immediate concern and it can only be achieved by avoiding the use of fossil fuels. In addition, waste disposal and management could be made remunerative through the generation of renewable energy so that sustainable development is ensured. India is an agriculture-based country, and paddy residues such as rice straw and rice husk are the largest agricultural wastes in India. Currently, the common practice to dispose paddy residues is through field burning, but this has adverse effects on the air quality and consequently on people's health. However, utilization of lignocellulosic and non-food agricultural residues such as paddy residue for biogas generation by solid-stated anaerobic digestion (AD) is promising and this can substitute fossil fuels. Paddy residues for biogas production via AD has not been widely adopted because of its complex cell wall structure making it resistant to digestion by microbial attack. In addition, sequestration of carbon dioxide from biogas by algal biomass cultivated in an integrated algal bioreactor could be a promising option for biogas enrichment due to its unmatched advantages. This chapter presents the overview on utilization of non-edible residues for biogas production and its enrichment via algal biomass by means of circular bioeconomy.

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“…Botryococcus braunii is known as microalgae with slow growth, and for that reason, research on its ability on wastewater is limited and considered to be quite challenging. [11], [12]. The purpose of this study is to examine the ability to grow Botryococcus braunii acclimatized in the AMD environment so that AMD can be used as a growth medium for Botryococcus braunii while removing excess metals in AMD.…”

Section: Introductionmentioning

confidence: 99%

Adaptation and Growth of Botryococcus braunii on Acid Mine Drainage

2020

IJITEE

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Abstract: Phycoremediation of acid mine drainage (AMD) is an alternative to AMD treatment but has limited applications. 4% and had a pH of 7.2, 5.6, 5.1, 4.8, 4.3, 0%, 3.5%, 4% is 1.403 d -1 ,1.374 d -1 ,0.0862 d -1 ,0.0738 d -1 , and 0.0616 d -1 concentrations of 2.15 mg.L -1 and 0.62 mg.L -1 highest values of 84.28% and 98%, respectively. The obstacle in the application of AMD phycoremediation is that the characteristic of wastewater which limits the growth of microalgae, where AMD has a high metal content and low pH. In this study, Botryococcus braunii was cultured on media with variations in the addition of AMD of (v/v) 0%, 2.5%, 3%, 3.5%, respectively, on the photobioreactor. Botryococcus braunii growth rate was analyzed, as well as the effect of metal exposure and pH variations on the growth of Botryococcus braunii. Botryococcus braunii showed different growth rates, sequentially from the highest rate in the media with addition of AMD (v/v) 2.5%, 3%, . It is known that the highest growth rate of Botryococcus braunii is obtained in media with 2.5% (v/v) AMD with an initial pH of 5.6, and Fe and Mn , respectively. It is also known the ability of Botryococcus braunii to adapt to acidic conditions with Fe and Mn content, where Botryococcus braunii plays a role in increasing media pH and is able to remove Fe and Mn with the

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Green Approach in the Bio-removal of Heavy Metals from wastewaters

Cited by 19 publications

References 13 publications

Phycoremediation of fish farm wastewater by Chlorella sorokiniana and autochthonous microalgae

Phycoremediation of fish farm wastewater by Chlorella sorokiniana and autochthonous microalgae

Contribution of Anaerobic Digestion Coupled with Algal System towards Zero Waste

Adaptation and Growth of Botryococcus braunii on Acid Mine Drainage

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