microalgae harvesting and processing a literature review

1. INTHooucnorl Mass culture of microalgae carl be ~racticea to attain diflerent objectives such as: production of hydrocarbons, proteins, vari ous organ i c subst ances , wastewater treatment, solar energy conversion or combination of ~he above. An blgal niass cuI ture is at t al nabl e in outdoor ponds uncrer su i t ab I e climatic conditions. High rate algal pond (HHAP) is an or-en

There is no single best method of harvesting microalgae, and the choice of preferable harvesting technology depends on algae species, growth medium, algae production, end product, and production cost benefit. The objective of this report is to present a discussion of the literature review performed on methods of harvesting microalgae. There is no single best method of harvesting microalgae.

The richness of high-value bio-compounds derived from microalgae has made microalgae a promising and sustainable source of useful product. The present work starts with a review on the usage of open pond and photobioreactor in culturing various microalgae strains, followed by an in-depth evaluation on the common harvesting techniques used to collect microalgae from culture medium.

Harvesting is a process of separating microalgal biomass from the growth medium. The strategy employed for harvesting and dewatering the microalgae generally accounts for approximately 3%-30% of total biomass cost [28, 29].Thus, the economy of microalgal production is significantly influenced by the harvesting technology [30].As mentioned earlier, several factors such as the cell age, shape ...

Microalgae with wide range of commercial applications have attracted a lot of attention of the researchers in the last few decades. However, microalgae utilization is not economically sustainable due to high cost of harvesting.

TY - GEN. T1 - Microalgae Harvesting and Processing: A Literature Review; A Subcontract Report. AU - NREL, null. PY - 1984. Y1 - 1984. N2 - This literature review on microalgae harvesting technologies does not reveal any revolutionary conceptual advances since the first study done by Golueke and Oswald (1965).

This thesis reviews challenges of harvesting and concentration of green microalgae and examines the effect of pH, flocculant dosage, and culture conductivity on charge neutralization and flocculation of Nannochloris oculata by aluminum chloride.

An ideal harvesting process should be effective for the majority of microalgal strains and should allow the achievement of high biomass concentrations, while requiring moderate costs of operation, energy and maintenance [22].The initial harvesting stage is generally costly and determines the following downstream processing.

Under the group of algae, microalgae are unicellular microorganisms which thrive in both saltwater and freshwater environments. Despite the absence of complex structure and organs when compared to their plant cousins, microalgae are able to perform photosynthesis using sunlight, carbon dioxide and water owing to the presence of photosynthetic pigments such as chlorophylls in their cells.

Algae are an important group of photosynthetic autotrophs and are commonly found in different types of water bodies, including paddy fields. The algal group possesses distinctive characteristics and ranges from prokaryotic cyanobacteria to eukaryotic algae. Within these, microalgae are unicellular microorganisms widely distributed in saltwater as well as freshwater environments. Microalgae ...

SERI/STR-231-2396 UC Category: 61a DE84013036 Microalgae Harvesting and Processing: A Literature Review A Subcontract Report G. Shelef A. Sukenik M. Green August 1984 Technion Research and Development Foundation ltd. Haifa, Israel Prepared under Subcontract No. XK-3-03031-01 SERI Technical Monitor: Robins P. Mcintosh Solar Energy Research Institute A Division of Midwest Research Institute 1617 ...

The objective of this report is to present a discussion of the literature review performed on methods of harvesting microalgae. There is no single best method of harvesting microalgae. The choice of preferable harvesting technology depends on algae species, growth medium, algae production, end product, and production cost benefit. Algae size is an important factor since low-cost filtration ...

Water 2023, 15, 3074 2 of 24 the harvesting process is 20-30% of the total production cost [5]. The major challenges faced during microalgae harvesting and dewatering processes are small cell size (<30 m),

Microalgae are promising biological factories for diverse natural products. Microalgae tout high productivity, and their biomass has value in industrial products ranging from biofuels, feedstocks, food additives, cosmetics, pharmaceuticals, and as alternatives to synthetic or animal-derived products.

Microalgae are photosynthetic autotrophic microscopic organisms growing in a range of aquatic and terrestrial habitats. They produce a huge complex of compounds in their surroundings which are of ...

Microalgae have important potential in the bio-based industry. However, their light-utilization mechanisms are still not fully understood. Together with knowledge of their metabolic pathways and their responses in carbon partitioning to different primary metabolites (carbohydrates, lipids and proteins), this information is essential if their potential and profitability are to be better exploited.

In microalgae-bacteria interactions, three main types of consortia are commonly found due to the bacterial types present in the culture: I) bacteria naturally associated with microalgae, from consortia isolated from unsterilized wastewater; II) bacteria in activated sludge, with a high capacity of phosphorus and nitrogen removal; and III) bacteria with known identities, that are strains with ...

The interest in microalgae production deals with its role as the third generation of feedstock to recover renewable energy. Today, there is a need to analyze the ultimate research and advances in recovering the microalgae biomass from the culture medium. Therefore, this review brings the current research developments (over the last three years) in the field of harvesting microalgae using ...

The richness of high value bio-compounds derived from microalgae has made microalgae a promising and sustainable source of useful product. The present work starts with a review on the usage of ...

Microalgae are photosynthetic autotrophic microscopic organisms growing in a range of aquatic and terrestrial habitats. They produce a huge complex of compounds in their surroundings which are of important use to humans. Their commercial use lies in human nutrition, animal and aquatic feed, in cosmetics products, natural pigments, pharmaceutical industry, bio-fertilizer for extracting high ...

1. Introduction. With the rapid increase of the world population and the development of industrialization, energy (mainly fossil fuels, coal and natural gas) has gradually become an important material basis for economic development and social progress.

The wide metabolic diversity of microalgae, their fast growth rates, and low-cost production make these organisms highly promising resources for a variety of biotechnological applications, addressing critical needs in industry, agriculture, and medicine. The use of microalgae in consortia with bacteria is proving valuable in several areas of biotechnology, including the treatment of various ...

We, NMFS, have completed a comprehensive status review of seven species of giant clams (Hippopus hippopus, H. porcellanus, Tridacna derasa, T. gigas, T. mbalavuana, T. squamosa, and T. squamosina) in response to a petition to list these species as threatened or endangered under the Endangered...

SERI/STR-231-2396 UC Category: 61a DE84013036 Microalgae Harvesting and Processing: A Literature Review A Subcontract Report G. Shelef A. Sukenik M. Green August 1984 Technion Research and Development Foundation ltd. Haifa, Israel Prepared under Subcontract No. XK-3-03031-01 SERI Technical Monitor: Robins P. Mcintosh Solar Energy Research Institute A Division of Midwest Research Institute 1617 ...