Journal ArticleDOI
Outdoor cultivation of Chlorella pyrenoidosa in paddy-soaked wastewater and a feasibility study on biodiesel production from wet algal biomass through in-situ transesterification
TLDR
In this article, the selected microalgae (Chlorella pyrenoidosa) was cultured in paddy-soaked wastewater (PWW) using outdoor raceway ponds of 50 L capacity where biotransformation of nutrients (NH3−N removal: 75.89±−0.69); PO4−P removal: 73.71±− 0.75%; yield co-efficient YN: 6.56−±-0.Abstract:
Sustainable resources management, incorporating energy markets and resources such as electricity, fossil fuels, renewable and sustainable energy capital is essential for society to understand production and conversion of various forms of energy, their current as well as future supply. Waste-to-energy (WTE) or energy-from-waste (EFW) is a well-identified transitional technology which could prevent complete depletion of renewable resources. In our present study, the selected microalgae (Chlorella pyrenoidosa) was cultured in paddy-soaked wastewater (PWW) using outdoor raceway ponds of 50 L capacity where biotransformation of nutrients (NH3–N removal: 75.89 ± 0.69%; PO4–P removal: 73.71 ± 0.75%; yield co-efficient YN: 6.12 mg biomass/mg of N; YP: 7.77 mg biomass/mg P) has occurred with better growth and biochemical composition (dry biomass weight: 1.56 ± 0.11 g/L; chlorophyll: 15.57 ± 0.14 mg/L; specific growth rate (SGR): 0.42/d; lipids: 27.47 ± 1.41% biomass; carbohydrates: 23.77 ± 1.00% and protein: 46.12 ± 3.55%). Further, the obtained algal lipid was identified for a wide range of fatty acid methyl esters (FAME) and consequently brought forward to in-situ single-step transesterification by optimizing reaction conditions. Central composite design (CCD) of response surface methodology (RSM) has given optimized conditions of sample amount: 2 g (wet); methanol sulphuric acid volume: 3 mL; and hexane volume: 4 mL, under the reaction temperature of 90 °C for maximum biodiesel conversion (46.54% of algal lipids). The outcome of our current research may add value to the application and development of WTE technology for sustainable energy conservation.read more
Citations
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Journal ArticleDOI
Phycoremediation of nitrogen and phosphate from wastewater using Picochlorum sp.: A tenable approach.
TL;DR: In this article, the authors provide a brief knowledge and understanding about the concentration of nitrogen and phosphate in different wastewater, their negative impacts, and the uptake mechanism of microalgae.
Journal ArticleDOI
Evaluation of the effects of input variables on the growth of two microalgae classes during wastewater treatment.
Vishal Singh,Vishal Mishra +1 more
TL;DR: In this article , the decision tree was used to analyse the dataset of class Trebouxiophyceae and class Chlorophycea and various combinations of cultivation parameters were determined to enhance their performance in wastewater treatment.
Journal ArticleDOI
Exploring the effects of different combinations of predictor variables for the treatment of wastewater by microalgae and biomass production
Vishal Singh,Vishal Mishra +1 more
TL;DR: In this paper, a decision tree algorithm was used to determine the effects and the best combination of predictor variables, including microalgae class, pre-cultivation stage deciding factors and operating variables.
Journal ArticleDOI
Algal biofuels: Technological perspective on cultivation, fuel extraction and engineering genetic pathway for enhancing productivity
TL;DR: In this paper , a review of various types of biofuels such as biodiesel, biohydrogen, bioethanol and biogas from different algal species utilizing cultivation systems such as raceway ponds and photobioreactors is presented.
Journal ArticleDOI
Use of reverse osmosis reject from drinking water plant for microalgal biomass production
TL;DR: In this paper , the use of reverse osmosis reject (RO) for microalgal biomass production was evaluated and shown to have a synergistic effect on the growth and biochemical composition of Chlorella pyrenoidosa.
References
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Book
Standard methods for the examination of water and wastewater
TL;DR: The most widely read reference in the water industry, Water Industry Reference as discussed by the authors, is a comprehensive reference tool for water analysis methods that covers all aspects of USEPA-approved water analysis.
Journal ArticleDOI
A rapid method of total lipid extraction and purification.
E. G. Bligh,W. J. Dyer +1 more
TL;DR: The lipid decomposition studies in frozen fish have led to the development of a simple and rapid method for the extraction and purification of lipids from biological materials that has been applied to fish muscle and may easily be adapted to use with other tissues.
Journal ArticleDOI
Purification and properties of unicellular blue-green algae (order Chroococcales).
TL;DR: Electron microscopic investigations, together with analytical data on cell wall composition and ribosomal structure, have revealed the common denominators, which are fundamental: bacteria and blue-green algae are the only organisms with cells of the procaryotic type.
Journal ArticleDOI
The potential of sustainable algal biofuel production using wastewater resources
TL;DR: The current research on this topic is reviewed and the potential benefits and limitations of using wastewaters as resources for cost-effective microalgal biofuel production are discussed.