algal biomass
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2022 ◽  
Vol 3 ◽  
Author(s):  
Jacob S. Kruger ◽  
Matthew Wiatrowski ◽  
Ryan E. Davis ◽  
Tao Dong ◽  
Eric P. Knoshaug ◽  
...  

Recent techno-economic analysis (TEA) has underscored that for algal biofuels to be cost competitive with petroleum fuels, co-products are necessary to offset the cost of fuel production. The co-product suite must scale with fuel production while also maximizing value from the non-fuel precursor components. The co-product suite also depends on algal biomass composition, which is highly dynamic and depends on environmental conditions during cultivation. Intentional shifts in composition during cultivation are often associated with reduced biomass productivity, which can increase feedstock production costs for the algae-based biorefinery. The optimal algae-based biorefinery configuration is thus a function of many factors. We have found that comprehensive TEA, which requires the construction of process models with detailed mass and energy balances, along with a complete accounting of capital and operating expenditures for a commercial-scale production facility, provides invaluable insight into the viability of a proposed biorefinery configuration. This insight is reflected in improved viability for one biorefining approach that we have developed over the last 10 years, namely, the Combined Algal Processing (CAP) approach. This approach fractionates algal biomass into carbohydrate-, lipid-, and protein-rich fractions, and tailors upgrading chemistry to the composition of each fraction. In particular, transitioning from valorization of only the lipids to a co-product suite from multiple components of high-carbohydrate algal biomass can reduce the minimum fuel selling price (MFSP) from more than $8/gallon of gasoline equivalent (GGE) to $2.50/GGE. This paper summarizes that progress and discusses several surprising implications in this optimization approach.


2022 ◽  
pp. 159-180
Author(s):  
Jonas Karl Christopher N. Agutaya ◽  
Armando T. Quitain ◽  
Yik Lam Kam ◽  
Siti Zullaikah ◽  
Joseph Auresenia ◽  
...  

2022 ◽  
Vol 174 ◽  
pp. 113253
Author(s):  
Chao Yuan ◽  
Jie Xiao ◽  
Xuelei Zhang ◽  
Jian Zhou ◽  
Zongling Wang

2022 ◽  
pp. 281-302
Author(s):  
Sabariswaran Kandasamy ◽  
Narayanamoorthy Bhuvanendran ◽  
Mathiyazhagan Narayanan ◽  
Zhixia He

2022 ◽  
pp. 421-449
Author(s):  
Imran Ahmad ◽  
Norhayati Abdullah ◽  
Mohd Danish Ahmad ◽  
Iwamoto Koji ◽  
Ali Yuzir

2022 ◽  
pp. 251-279
Author(s):  
Marwa R. Elkatory ◽  
Mohamed A. Hassaan ◽  
Ahmed El Nemr
Keyword(s):  

2022 ◽  
Vol 14 (1) ◽  
pp. 455
Author(s):  
Magdalini Tsarpali ◽  
John N. Kuhn ◽  
George P. Philippidis

Conversion of residual algal biomass to value-added products is essential for enhancing the economics of algae cultivation. Algal hydrochar produced via hydrothermal carbonization of lipid-extracted Picochlorum oculatum is a material rich in oxygen functional groups and carbon (up to 67.3%) and hence a promising candidate for remediation of wastewaters. The hydrothermal carbonization conditions were optimized and the adsorption capacity of the hydrochar was tested for metal removal. By the end of the remediation process, cumulative removal of Al3+, Cu2+, Fe2+, Mg2+, Mn2+, and Pb2+ reached 89, 98, 75, 88, 75, and 100%, respectively. The adsorption of all metals was found to follow pseudo second-order kinetics and the Langmuir isotherm. Overall, when hydrothermal carbonization is applied to lipid-extracted algae, it generates a promising biobased adsorbent with value-added potential in metal remediation.


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