scholarly journals Coupling of Algal Biofuel Production with Wastewater

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Neha Chamoli Bhatt ◽  
Amit Panwar ◽  
Tara Singh Bisht ◽  
Sushma Tamta
Keyword(s):  
Large Scale ◽  
Algal Growth ◽  
Cost Effective ◽  
Review Article ◽  
Biofuel Production ◽  
Algal Biofuel ◽  
Microalgal Cultivation ◽  
Waste Remediation ◽  
High Lipid ◽  
Current Scenario

Microalgae have gained enormous consideration from scientific community worldwide emerging as a viable feedstock for a renewable energy source virtually being carbon neutral, high lipid content, and comparatively more advantageous to other sources of biofuels. Although microalgae are seen as a valuable source in majority part of the world for production of biofuels and bioproducts, still they are unable to accomplish sustainable large-scale algal biofuel production. Wastewater has organic and inorganic supplements required for algal growth. The coupling of microalgae with wastewater is an effective way of waste remediation and a cost-effective microalgal biofuel production. In this review article, we will primarily discuss the possibilities and current scenario regarding coupling of microalgal cultivation with biofuel production emphasizing recent progress in this area.

Effects of Carrier Material and Design on Microalgae Attachment for Biofuel Manufacturing: A Literature Review

2010 ◽  
Author(s):  
Yan Cui ◽  
Wenqiao Wayne Yuan ◽  
Zhijian Pei
Keyword(s):  
Free Energy ◽  
Large Scale ◽  
Cell Attachment ◽  
Cost Effective ◽  
Surface Wettability ◽  
Biofuel Production ◽  
Algae Biofuels ◽  
Attachment Strength ◽  
Species Specific ◽  
Continuous Use

Continuous use of petroleum derived fuels is widely recognized as unsustainable due to depleting supplies and the accumulation of greenhouse gases in the environment. Renewable, carbon neutral transport fuels are needed for environmental and economic sustainabilities. Algae have been demonstrated to be one of the most promising sources for biofuel production. However, large-scale algae production and harvesting for energy manufacturing are too costly using existing methods. The approach of growing algae on solid carriers is innovative and can potentially lead to cost-effective manufacturing of algae biofuels. As cells approach to the solid surface, many factors come in to influence microbial attachment such as the surface wettability, free energy, polarity, roughness and topography. Surface wettability plays an important role in the initial cell attachment. For further contact, surface free energy and polarity are more directly related to cell-substratum attachment strength. Surface roughness and texture are species-specific parameters and have been applied widely in attachment studies.

scholarly journals Managing Plant Microbiomes for Sustainable Biofuel Production

2021 ◽  
Vol 5 (1) ◽  
pp. 3-13
Author(s):  
Kateryna Zhalnina ◽  
Christine Hawkes ◽  
Ashley Shade ◽  
Mary K. Firestone ◽  
Jennifer Pett-Ridge
Keyword(s):  
Crop Production ◽  
Large Scale ◽  
Crop Yields ◽  
Soil Health ◽  
Agricultural Practices ◽  
Cost Effective ◽  
Biofuel Production ◽  
Bioenergy Crops ◽  
Bioenergy Crop ◽  
Ecosystem Impacts

The development of environmentally sustainable, economical, and reliable sources of energy is one of the great challenges of the 21st century. Large-scale cultivation of cellulosic feedstock crops (henceforth, bioenergy crops) is considered one of the most promising renewable sources for liquid transportation fuels. However, the mandate to develop a viable cellulosic bioenergy industry is accompanied by an equally urgent mandate to deliver not only cheap reliable biomass but also ecosystem benefits, including efficient use of water, nitrogen, and phosphorous; restored soil health; and net negative carbon emissions. Thus, sustainable bioenergy crop production may involve new agricultural practices or feedstocks and should be reliable, cost effective, and minimal input, without displacing crops currently grown for food production on fertile land. In this editorial perspective for the Phytobiomes Journal Focus Issue on Phytobiomes of Bioenergy Crops and Agroecosystems, we consider the microbiomes associated with bioenergy crops, the effects beneficial microbes have on their hosts, and potential ecosystem impacts of these interactions. We also address outstanding questions, major advances, and emerging biotechnological strategies to design and manipulate bioenergy crop microbiomes. This approach could simultaneously increase crop yields and provide important ecosystem services for a sustainable energy future.

scholarly journals Algal Biofuels: Current Status and Key Challenges

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1920 ◽  
Author(s):  
Marwa G. Saad ◽  
Noura S. Dosoky ◽  
Mohamed S. Zoromba ◽  
Hesham M. Shafik
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Algal Species ◽  
Biofuel Production ◽  
Current Status ◽  
Algal Biofuel ◽  
Algal Biofuels ◽  
High Lipid ◽  
Increasing Demand ◽  
First And Second Generation

The current fossil fuel reserves are not sufficient to meet the increasing demand and very soon will become exhausted. Pollution, global warming, and inflated oil prices have led the quest for renewable energy sources. Algal biofuels represent a potential source of renewable energy. Algae, as the third generation feedstock, are suitable for biodiesel and bioethanol production due to their quick growth, excellent biomass yield, and high lipid and carbohydrate contents. With their huge potential, algae are expected to surpass the first and second generation feedstocks. Only a few thousand algal species have been investigated as possible biofuel sources, and none of them was ideal. This review summarizes the current status of algal biofuels, important steps of algal biofuel production, and the major commercial production challenges.

Study and Application of Various Activated Carbons and Ash used in Water Purification Techniques: A Review

2020 ◽  
Vol 15 (3) ◽  
pp. 384-397
Author(s):  
Ajinkya Ravindra Telgote ◽  
Satish Sudhakarao Patil
Keyword(s):  
Water Pollution ◽  
Large Scale ◽  
Activated Carbons ◽  
Orange Peel ◽  
Cost Effective ◽  
Review Article ◽  
Banana Peel ◽  
Contaminated Water ◽  
Peanut Shell ◽  
Pomegranate Peel

Water pollution is increasing due to the different factors such as population growth, large-scale urbanization, deforestation, and unethical activities in the river or other sources of water. Various experts have been working in the field of the preparation ofactivated carbon from renewable energy including cost-effective technologies and products in an eco-friendly manner for various applications. This review article discusses methodologies utilized by various experts for the preparation of activated carbon for the abatement of water pollution. Biomasssuch ascoconut shell, Moringaoleifera seed, Peanut shell, Pomegranate peel, Rice husk, Lemon shell, Banana peel, and Orange Peel are found extremely helpful in the field of treatment of the contaminated water. The reviewed literature showed that the Biomass can be isolatespollutants from contaminated water through physical, mechanical, and biological techniques and removes various physicochemical pollutants such as pH, color, DO, turbidity, conductivity, turbidity, chloride, fluoride, TSS, TDS, BOD, COD, nitrate, phosphate, and heavy metal, etc. from contaminated water.

Dye Removal Ability of Pure and Doped Graphitic Carbon Nitride

2021 ◽  
Vol 17 ◽  
Author(s):  
Dimitra Das ◽  
Amit Kuamr Sharma ◽  
Kalyan Kumar Chattopadhyay ◽  
Diptonil Banerjee
Keyword(s):  
Water Purification ◽  
Large Scale ◽  
Carbon Nitride ◽  
Cost Effective ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Extensive Literature ◽  
Water Ecosystem ◽  
Systematic Effort ◽  
Current Scenario

Background: Rapid escalation in textile, paper, pesticides, pharmaceuticals and several other chemical based manufacturing industries due to amplification in human requirements have proportionately contributed to the extreme contamination of water ecosystem, resulted from the discharge of toxic pollutants from industries. Effluents from textile industries are comprised of coloured dyes like Rhodamine B, Methyl Orange, Methylene Blue and phenolic compounds which deserve special mention owing to their non-biodegradable, carcinogenic and severe detrimental nature. Urgent needs to ameliorate this fast declining environmental situation are of immense necessity in current scenario. Objectives: Objectives: In this regard, graphitic carbon nitride (GCN) is a distinguished material for water purification-based applications because of its exclusive characteristics making it highly prospective for degradation of toxic dyes from water by catalysis and adsorption techniques. GCN has been a material of conspicuous interest in recent times owing to its two dimensional sheets like structure with favourable surface area, and cost-effective synthesis approaches along with high production yield. This article presents a detail study of different aspects of GCN as a material of potential for water purification. Through extensive literature survey it has been shown that GCN is an effective material to be used in the fields of application. Several effective procedures like catalysis or adsorption for removal of dyes from water have been discussed with their basic science behind. Conclusions: This systematic effort shows that GCN can be considered to be one of the most efficient water purifier with further advantages arising from its easy and cost effective large scale synthesis.

The sugar and alcohol industry in the biofuels and cogeneration era: a paradigm change (part II)

2014 ◽  
pp. 97-104 ◽  
Author(s):  
Electo Eduardo Silv Lora ◽  
Mateus Henrique Rocha ◽  
José Carlos Escobar Palacio ◽  
Osvaldo José Venturini ◽  
Maria Luiza Grillo Renó ◽  
...  
Keyword(s):  
Large Scale ◽  
New Technologies ◽  
Process Integration ◽  
Animal Feed ◽  
Raw Materials ◽  
Biofuel Production ◽  
New Paradigm ◽  
Alcohol Industry ◽  
Feed Production ◽  
Steam Parameters

The aim of this paper is to discuss the major technological changes related to the implementation of large-scale cogeneration and biofuel production in the sugar and alcohol industry. The reduction of the process steam consumption, implementation of new alternatives in driving mills, the widespread practice of high steam parameters use in cogeneration facilities, the insertion of new technologies for biofuels production (hydrolysis and gasification), the energy conversion of sugarcane trash and vinasse, animal feed production, process integration and implementation of the biorefinery concept are considered. Another new paradigm consists in the wide spreading of sustainability studies of products and processes using the Life Cycle Assessment (LCA) and the implementation of sustainability indexes. Every approach to this issue has as an objective to increase the economic efficiency and the possibilities of the sugarcane as a main source of two basic raw materials: fibres and sugar. The paper briefly presents the concepts, indicators, state-of-the-art and perspectives of each of the referred issues.

Phosphorus Leaching Under Cut Grassland

1999 ◽  
Vol 39 (12) ◽  
pp. 63-67 ◽  
Author(s):  
B. L. Turner ◽  
P. M. Haygarth
Keyword(s):  
Surface Waters ◽  
Large Scale ◽  
Agricultural Land ◽  
Algal Growth ◽  
Soil Types ◽  
P Fractions ◽  
Inorganic P ◽  
Potential Source ◽  
Significant Mechanism ◽  
Total P

Phosphorus (P) transfer from agricultural land to surface waters can contribute to eutrophication, excess algal growth and associated water quality problems. Grasslands have a high potential for P transfer, as they receive P inputs as mineral fertiliser and concentrates cycled through livestock manures. The transfer of P can occur through surface and subsurface pathways, although the capacity of most soils to fix inorganic P has meant that subsurface P transfer by leaching mechanisms has often been perceived as negligible. We investigated this using large-scale monolith lysimeters (135 cm deep, 80 cm diameter) to monitor leachate P under four grassland soil types. Leachate was collected during the 1997–98 drainage year and analysed for a range of P fractions. Mean concentrations of total P routinely exceeded 100 μg l−1 from all soil types and, therefore, exceeded P concentrations above which eutrophication and algal growth can occur. The majority of the leachate P was in algal-available Mo-reactive (inorganic) forms, although a large proportion occurred in unreactive (organic) forms. We suggest that subsurface transfer by leaching can represent a significant mechanism for agricultural P transfer from some soils and must be given greater consideration as a potential source of diffuse P pollution to surface waters.

Final Report: Scale-up of Algal Biofuel Production Using Waste Nutrients

2018 ◽  
Author(s):  
Tryg Lundquist ◽  
◽  
Ruth Spierling ◽  
◽  
Keyword(s):  
Scale Up ◽  
Biofuel Production ◽  
Final Report ◽  
Algal Biofuel

Recent Developments in the Downstream Processing of Phycobiliproteins from Algae: A Review

2021 ◽  
Vol 06 ◽  
Author(s):  
Ayekpam Chandralekha Devi ◽  
G. K. Hamsavi ◽  
Simran Sahota ◽  
Rochak Mittal ◽  
Hrishikesh A. Tavanandi ◽  
...  
Keyword(s):  
Cell Wall ◽  
Large Scale ◽  
Downstream Processing ◽  
Review Article ◽  
Current Status ◽  
Wall Structure ◽  
Scale Production ◽  
Cell Wall Disruption ◽  
Recent Developments ◽  
Macro Algae

Abstract: Algae (both micro and macro) have gained huge attention in the recent past for their high commercial value products. They are the source of various biomolecules of commercial applications ranging from nutraceuticals to fuels. Phycobiliproteins are one such high value low volume compounds which are mainly obtained from micro and macro algae. In order to tap the bioresource, a significant amount of work has been carried out for large scale production of algal biomass. However, work on downstream processing aspects of phycobiliproteins (PBPs) from algae is scarce, especially in case of macroalgae. There are several difficulties in cell wall disruption of both micro and macro algae because of their cell wall structure and compositions. At the same time, there are several challenges in the purification of phycobiliproteins. The current review article focuses on the recent developments in downstream processing of phycobiliproteins (mainly phycocyanins and phycoerythrins) from micro and macroalgae. The current status, the recent advancements and potential technologies (that are under development) are summarised in this review article besides providing future directions for the present research area.

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