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Updated: Aug 15, 2025

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae

Published on: July 10, 2015

Microalgae Commercialization Using Renewable Lignocellulose Is Economically and Environmentally Viable.

Xiaoxiong Wang^1,2, Tong Wang^2,3,4, Tianyuan Zhang^5,6

¹Institute for Ocean Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China.

Environmental Science & Technology

|January 4, 2023

Summary

Heterotrophic microalgae cultivation using cellulosic hydrolysate offers a cost-effective and sustainable alternative to traditional methods. This approach shows economic and environmental advantages, with potential for further cost reduction through co-product generation.

Keywords:

algal biomass production decarbonization heterotrophic cultivation lignocellulose low-cost carbon source renewable bio-feedstock

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Qualitative Characterization of the Aqueous Fraction from Hydrothermal Liquefaction of Algae Using 2D Gas Chromatography with Time-of-flight Mass Spectrometry

Published on: March 6, 2016

Area of Science:

Biotechnology
Sustainable Energy
Algal Biorefining

Background:

Phototrophic microalgae cultivation faces challenges with low and unstable biomass productivity due to unreliable light transmission.
Cellulosic hydrolysate from lignocellulose presents a sustainable and cost-effective carbon source for microalgae cultivation.

Purpose of the Study:

To evaluate the economic and environmental feasibility of cellulosic hydrolysate-mediated heterotrophic cultivation (Cel-HC) for microalgae production.
To compare Cel-HC with conventional phototrophic cultivation methods.

Main Methods:

Techno-economic analysis (TEA) was employed to estimate the minimum selling price (MSP) of microalgae produced via Cel-HC.
Life cycle assessment (LCA) was conducted to compare the environmental impacts of Cel-HC and phototrophic cultivation.
Economic analysis considered annual biomass productivity and revenue from co-products like xylose and fulvic acid fertilizer.

Main Results:

Cel-HC achieved a competitive MSP of 4722 USD/t for high-purity microalgae, comparable to phototrophic systems.
Revenue from co-products could reduce the MSP to 2976 USD/t, demonstrating biorefinery benefits.
Cel-HC exhibited lower cumulative energy demand and greenhouse gas emissions compared to phototrophic systems.

Conclusions:

Cellulosic hydrolysate-mediated heterotrophic cultivation is an economically viable and environmentally sustainable method for microalgae production.
Integrated biorefineries producing microalgae and co-products offer significant economic and environmental advantages.
Cel-HC has the potential to reduce the carbon intensity of algae-derived commodities.