Algae-based wastewater treatment
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Algae-based wastewater treatment
Algae's capacity to remove pollutants such as nitrogen, phosphorus and heavy metals from wastewater.
Curated by Jun Yoshitani
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Algae Biofuel For Wastewater Treatment Nascent Market But Innovations Funding On The Upswing

Algae Biofuel For Wastewater Treatment Nascent Market But Innovations Funding On The Upswing | Algae-based wastewater treatment | Scoop.it
“ Over 40 years ago, scientists identified the potential of algae as a feedstock for biofuel. In the early 2000s, the hype...”
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Sea lettuce blooms - SunLive

Sea lettuce blooms - SunLive | Algae-based wastewater treatment | Scoop.it
“Sea lettuce blooms SunLive “These efforts included removing Tauranga and Omokoroa sewage in the mid-90s, closure of piggeries around the harbour, reduction in nutrients flowing from agri-nutrient and other industrial sites, reduction of septic tank...”
Jun Yoshitani's insight:
Sea lettuce, otherwise known as Ulva are leafy marine alga. They are typically high in carbohydrates and can be a source of food (not if grown in polluted waters). In this case, conditions appear to be favorable for cultivating sea lettuce using the nutrient rich harbor water. With modest investment, a low cost cultivation system can be set-up to produce a consistent amount of this alga, which can then be used as feedstock for producing fertilizer or biofuel. Chances are there isn't enough quantity of algal biomass to do the latter, but a quick survey would indicate whether biofuel is a feasible option.
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Cellulose nanocrystals found to have stiffness of steel

Cellulose nanocrystals found to have stiffness of steel | Algae-based wastewater treatment | Scoop.it
Applications range from electronics and medical devices to structural components for the automotive, civil and aerospace industries.The same tiny cellulose crystals that give trees and plants their high strength, light weight and resilience, have now been shown to have the stiffness of steel. The nanocrystals might be used to create a new class of biomaterials with wide-ranging applications, such as strengthening construction materials and automotive components.Calculations using precise models based on the atomic structure of cellulose show the crystals have a stiffness of 206 gigapascals, which is comparable to steel, said Pablo D. Zavattieri, a Purdue University assistant professor of civil engineering.The nanocrystals are about 3 nanometers wide by 500 nanometers long, making them too small to study with light microscopes and difficult to measure with laboratory instruments.The findings represent a milestone in understanding the fundamental mechanical behavior of the cellulose nanocrystals. “It is also the first step towards a multiscale modeling approach to understand and predict the behavior of individual crystals, the interaction between them, and their interaction with other materials,” Zavattieri said.“This is important for the design of novel cellulose-based materials as other research groups are considering them for a huge variety of applications, ranging from electronics and medical devices to structural components for the automotive, civil and aerospace industries.”

Via Dr. Stefan Gruenwald
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Great Lakes Nutrient Removal Assistance Act (H.R. 600) - GovTrack.us

Great Lakes Nutrient Removal Assistance Act (H.R. 600) - GovTrack.us | Algae-based wastewater treatment | Scoop.it
“H.R. 600. To amend the Federal Water Pollution Control Act to provide assistance for nutrient removal technologies to States in the Great Lakes System. In GovTrack.us, a database of bills in the U.S. Congress.”
Jun Yoshitani's insight:
7% chance of getting past committee and 2% chance of being enacted, while Lake Erie is dying and the largest source of freshwater is becoming increasingly impacted by algae blooms. Congress, do something!
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"Nutrient Removal Using Microalgae in Wastewater-fed High Rate ...

“This thesis discusses the mechanisms associated with the removal of organic matter, nitrogen and phosphorus in wastewater-fed high rate algae ponds (HRAP) designed to operate as triplicates. Research was conducted at the San Luis ...”
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The effect of harvesting on biomass production and nutrient removal in phototrophic biofilm reactors for effluent polishing - Online First - Springer

The effect of harvesting on biomass production and nutrient removal in phototrophic biofilm reactors for effluent polishing - Online First - Springer | Algae-based wastewater treatment | Scoop.it
“Effect harvesting on biomass production and nutrient removal in phototrophic biofilm reactors for effluent polishing http://t.co/G3sD7BQNd6”
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