Algal Biomass and Biodiesel Production

2019 ◽  
pp. 301-316
Author(s):  
Samakshi Verma ◽  
Arindam Kuila
Keyword(s):  
Algal Biomass ◽  
Biodiesel Production

Utilization of de-oiled algal biomass for enhancing vehicular quality biodiesel production from Chlorella sp. in mixotrophic cultivation systems

2018 ◽  
Vol 122 ◽  
pp. 80-88 ◽  
Author(s):  
Richa Katiyar ◽  
Randhir K. Bharti ◽  
B.R. Gurjar ◽  
Amit Kumar ◽  
Shalini Biswas ◽  
...  
Keyword(s):  
Algal Biomass ◽  
Biodiesel Production ◽  
Mixotrophic Cultivation ◽  
Cultivation Systems ◽  
Chlorella Sp

Removal of nutrients from domestic wastewater by microalgae coupled to lipid augmentation for biodiesel production and influence of deoiled algal biomass as biofertilizer for Solanum lycopersicum cultivation

Chemosphere ◽  
2021 ◽  
Vol 268 ◽  
pp. 129323
Author(s):  
Sivagnanam Silambarasan ◽  
Peter Logeswari ◽  
Ramachandran Sivaramakrishnan ◽  
Aran Incharoensakdi ◽  
Pablo Cornejo ◽  
...  
Keyword(s):  
Solanum Lycopersicum ◽  
Algal Biomass ◽  
Domestic Wastewater ◽  
Biodiesel Production

scholarly journals Progress of Microalgal Biodiesel Research in Pakistan

2018 ◽  
pp. 1-6
Author(s):  
Yue Shi ◽  
Keyword(s):  
Algal Biomass ◽  
Fossil Fuels ◽  
Government Support ◽  
Energy Resources ◽  
Biodiesel Production ◽  
Future Perspectives ◽  
Compressed Natural Gas ◽  
Local Resources ◽  
Microalgal Biodiesel ◽  
Production Technologies

Excessive use of fossil fuels has led to severe energy calamity and environmental pollution in the world. The effect can be mitigated by shifting from conventional fuels to biofuel which may become a replacement of fuels such as diesel, gasoline and Compressed Natural Gas (CNG). Algal biomass is considered as one of the most promising and emerging sources of biodiesel production. Technologies related to biodiesel production using algal biomass have gained initial foothold in Pakistan but have failed miserably in gaining necessary momentum due to lack of government support to technology. The aim of this study is to indicate the progress and future perspectives of biodiesel production in Pakistan through microalgae. The study indicates that a microalgae is one of the best candidates for biodiesel production in addition to other energy crops like Jatropha, Castor and Pongamia Pinnata. There is a need to expeditiously develop biodiesel technology using local resources to lower the burden of imports on country’s economy while also bringing security of energy resources.

scholarly journals A Comparative Study of Bioprocess Performance for Improvement of Bioethanol Production from Macroalgae

2019 ◽  
Vol 33 (1) ◽  
pp. 133-140 ◽  
Author(s):  
Benan İnan ◽  
Didem Özçimen
Keyword(s):  
Potassium Hydroxide ◽  
Algal Biomass ◽  
Treatment Time ◽  
Treatment Temperature ◽  
Biodiesel Production ◽  
Marmara Sea ◽  
Bioethanol Production ◽  
Dilute Acid ◽  
Pre Treatment ◽  
Bioethanol Yield

In the last decade, studies that have focused on biodiesel production from algal biomass have been replaced with bioethanol production from algae, because bioethanol production from algae seems more promising when assessed on economic terms. Most coastal areas are covered with macroalgae, which are considered as a waste, and thus become a great problem for the municipality. Instead of their disposal, they can be alternatively utilized for bioethanol production. In this study, macroalgae located in the coastal regions of the Marmara Sea were collected and utilized for bioethanol production, and effects of the concentration of pre-treatment chemicals, pre-treatment temperature, and pre-treatment time on bioethanol yield were investigated. The highest bioethanol yields for dilute acid and alkaline pre-treatments were obtained under the conditions of 2 N sulfuric acid and 0.15 N potassium hydroxide solutions at the pre-treatment temperature of 100 °C and pre-treatment time of 60 minutes.

scholarly journals Feasibility of Utilizing Wastewaters for Large-Scale Microalgal Cultivation and Biofuel Productions Using Hydrothermal Liquefaction Technique: A Comprehensive Review

2021 ◽  
Vol 9 ◽  
Author(s):  
Sourav Kumar Bagchi ◽  
Reeza Patnaik ◽  
Ramasare Prasad
Keyword(s):  
Crude Oil ◽  
Algal Biomass ◽  
Large Scale ◽  
Oil Production ◽  
Review Article ◽  
Hydrothermal Liquefaction ◽  
Production Costs ◽  
Biodiesel Production ◽  
Comprehensive Review ◽  
Crude Oil Production

The two major bottlenecks faced during microalgal biofuel production are, (a) higher medium cost for algal cultivation, and (b) cost-intensive and time consuming oil extraction techniques. In an effort to address these issues in the large scale set-ups, this comprehensive review article has been systematically designed and drafted to critically analyze the recent scientific reports that demonstrate the feasibility of microalgae cultivation using wastewaters in outdoor raceway ponds in the first part of the manuscript. The second part describes the possibility of bio-crude oil production directly from wet algal biomass, bypassing the energy intensive and time consuming processes like dewatering, drying and solvents utilization for biodiesel production. It is already known that microalgal drying can alone account for ∼30% of the total production costs of algal biomass to biodiesel. Therefore, this article focuses on bio-crude oil production using the hydrothermal liquefaction (HTL) process that converts the wet microalgal biomass directly to bio-crude in a rapid time period. The main product of the process, i.e., bio-crude oil comprises of C16-C20 hydrocarbons with a reported yield of 50–65 (wt%). Besides elucidating the unique advantages of the HTL technique for the large scale biomass processing, this review article also highlights the major challenges of HTL process such as update, and purification of HTL derived bio-crude oil with special emphasis on deoxygenation, and denitrogenation problems. This state of art review article is a pragmatic analysis of several published reports related to algal crude-oil production using HTL technique and a guide towards a new approach through collaboration of industrial wastewater bioremediation with rapid one-step bio-crude oil production from chlorophycean microalgae.

Biodiesel Production from Wet Algal Biomass through in Situ Lipid Hydrolysis and Supercritical Transesterification

2010 ◽  
Vol 24 (9) ◽  
pp. 5235-5243 ◽  
Author(s):  
Robert B. Levine ◽  
Tanawan Pinnarat ◽  
Phillip E. Savage
Keyword(s):  
Algal Biomass ◽  
Biodiesel Production ◽  
Lipid Hydrolysis

scholarly journals Exploration on Bioflocculation ofNannochloropsis oculataUsing Response Surface Methodology for Biodiesel Production

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Duraiarasan Surendhiran ◽  
Mani Vijay
Keyword(s):  
Response Surface Methodology ◽  
Algal Biomass ◽  
Energy Input ◽  
Cost Effective ◽  
High Energy ◽  
Nannochloropsis Oculata ◽  
Biodiesel Production ◽  
Maximum Efficiency ◽  
The Cost ◽  
Flocculation Time

Harvesting of algal biomass in biodiesel production involves high energy input and cost incurred process. In order to overcome these problems, bioflocculation process was employed and the efficiency of this process was further improved by the addition of a cationic inducer. In this work marineBacillus subtiliswas used for bioflocculation ofNannochloropsis oculataand ZnCl2as cationic inducer. This study worked under the principle of divalent cationic bridging (DCB) theory. Under temperature stress and high pH, the bacterium produced exopolysaccharide that bound with microalgaNannochloropsis oculataand flocculated them. A maximum efficiency of 95.43% was observed with the optimised RSM parameters—temperature 30.78°C, pH 10.8, flocculation time 6.7 h, bioflocculant size 0.38 mL, and cationic inducer concentration 0.035 mM. The present investigation focused on the cost effective harvesting of microalga on a larger scale for biodiesel production than using toxic, ecofriendly chemical flocculants.

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