11. SUSTAINABLE CITIES AND COMMUNITIES

A novel approach for removing microplastics from water

A novel approach for removing microplastics from water
Written by ZJbTFBGJ2T

A novel approach for removing microplastics from water  Weatherford Democrat

A novel approach for removing microplastics from water

A Novel Biological Approach for Removing Microplastics from Water

A new study led by Texas A&M AgriLife Research has identified what may be a novel biological approach for removing extremely small and potentially dangerous plastic particles from water.

The study, called “Microplastics removal in the aquatic environment via fungal pelletization,” was headed by Huaimin Wang, Ph.D., a post-doctoral scientist in the Texas A&M College of Agriculture and Life Sciences Department of Plant Pathology and Microbiology. Collaborators included Susie Dai, Ph.D., an associate professor in the department, and a team of researchers.

The U.S. Department of Agriculture Forest Service’s Northern Research Station also participated in the study, which can be found online in the September edition of Bioresource Technology Reports.

Microplastics in the Environment

Microplastics, tiny plastic particles resulting from commercial product development and the breakdown of larger plastics, have gained increasing attention in recent years due to their potential harm to the ecosystem. With the continual increase of global plastic production, pollution from this persistent waste contaminant group derived from synthetic polymers presents a significant environmental challenge.

While the health risks posed by submicrometer microplastics to humans are not yet fully understood, those studying them generally believe the overall risk associated with submicrometer microplastics – those less than a micron in a specified measurement — is higher than that of larger plastics. They hypothesize this is due in large measure to their greater potential for long-range transport and ability to more easily penetrate the cells of living organisms.

“Previous studies have indicated that submicrometer microplastics can easily travel considerable distances in the environment, infiltrating plant root cell walls,” Wang said. “They have even been shown to have been transported into plant fruiting bodies and human placenta.”

Besides microplastics generated from direct human activity such as cosmetic and industrial production, nanoplastics — synthetic polymer particulates ranging from 1 nanometer to 1 micrometer in diameter — can also be generated from the fragmentation or degradation of larger plastics.

About the Study

A significant portion of microplastics generated from human activities end up in sewage and wastewater treatment plants. While these plants can remove the vast majority of them, many of the submicrometer particles are unfiltered.

“The microplastics and nanoplastics removed after activated sludge treatment can be further removed by additional conventional methods such as coagulation, disk filters and membrane filtration,” Dai said. “But enriched microplastics still pose a waste-management challenge.”

Unfortunately, she said, some disposal methods like landfill interment or incineration are not environmentally favorable for reintroducing these back into the natural carbon cycle.

For the study, three fungal strain candidates were chosen based on their speed of growth, dye degradation, spore production and pellet formation. Two were newly isolated white rot fungi strains.

The study yielded encouraging findings on removing polystyrene and polymethyl methacrylate microplastics and nanoplastics — ranging from 200 nanometers to 5 micrometers in the aquatic environment — using these isolated fungal strains.

“These types of microplastics and nanoplastics are among the most common,” Dai said.

The three strains showed a high rate of microplastic removal and exhibited potential microplastic assimilation.

“The microplastics attach to the surface of the fungal biomass, which makes it easier to remove them from water as part of the pellet,” Dai explained.

Wang said due to the unique capacity of the selected white rot fungal strains to form pellets, they should be suitable for remediating microplastics.

“They may also have the potential for use in upgrading wastewater treatment plants and as a cost-effective means to further remove microplastics and minimize the pollution by plastics in natural water bodies,” he said.

More about Dai’s Studies on Natural Bioremediation

The current study using fungus to remove microplastics is compatible with Dai’s previous research using fungus to remediate PFAS or “forever chemicals” in the environment.

“Fungi have unique environmental applications due to their diversity and robustness,” Dai said. “They have also been useful in our ability to develop a novel bioremediation technology for these chemicals, which can threaten human health and ecosystem sustainability.”

PFAS are used in many applications ranging from food wrappers and packaging, to dental floss, fire-fighting foam, nonstick cookware, textiles and electronics.

Dai’s new technology uses a plant-derived material to absorb the PFAS and dispose of them by means of microbial fungi that literally eat them.

SDGs, Targets, and Indicators Identified in the Article

SDGs Targets Indicators
SDG 14: Life Below Water Target 14.1: By 2025, prevent and significantly reduce marine pollution of all kinds, particularly from land-based activities, including plastic debris and nutrient pollution – Microplastics removal from water
– Reduction in plastic debris in aquatic environments
SDG 6: Clean Water and Sanitation Target 6.3: By 2030, improve water quality by reducing pollution, eliminating dumping and minimizing release of hazardous chemicals and materials, halving the proportion of untreated wastewater, and increasing recycling and safe reuse globally – Removal of microplastics from wastewater
– Improvement in water quality through microplastic assimilation
SDG 12: Responsible Consumption and Production Target 12.5: By 2030, substantially reduce waste generation through prevention, reduction, recycling, and reuse – Reduction in microplastic waste generation
– Use of fungal strains for microplastic remediation as a form of waste management

1. Which SDGs are addressed or connected to the issues highlighted in the article?

SDG 14: Life Below Water

The article discusses the issue of microplastics in the aquatic environment and their potential harm to the ecosystem. SDG 14 aims to prevent and significantly reduce marine pollution, including plastic debris, by 2025.

SDG 6: Clean Water and Sanitation

The article highlights the need to improve water quality by reducing pollution and eliminating hazardous materials, including microplastics. SDG 6 focuses on ensuring clean water and sanitation for all.

SDG 12: Responsible Consumption and Production

The article mentions the challenge of waste management posed by microplastics. SDG 12 aims to reduce waste generation through prevention, reduction, recycling, and reuse.

2. What specific targets under those SDGs can be identified based on the article’s content?

Target 14.1: By 2025, prevent and significantly reduce marine pollution of all kinds, particularly from land-based activities, including plastic debris and nutrient pollution

The article addresses the need to remove microplastics from water to prevent marine pollution and reduce plastic debris.

Target 6.3: By 2030, improve water quality by reducing pollution, eliminating dumping and minimizing release of hazardous chemicals and materials, halving the proportion of untreated wastewater, and increasing recycling and safe reuse globally

The article emphasizes the importance of removing microplastics from wastewater to improve water quality and reduce pollution.

Target 12.5: By 2030, substantially reduce waste generation through prevention, reduction, recycling, and reuse

The article discusses the use of fungal strains for microplastic remediation as a form of waste management, contributing to the reduction of waste generation.

3. Are there any indicators mentioned or implied in the article that can be used to measure progress towards the identified targets?

– Microplastics removal from water: The article highlights the use of fungal strains to remove microplastics from the aquatic environment, indicating progress towards the targets of reducing marine pollution and improving water quality.

– Reduction in plastic debris in aquatic environments: The study’s findings on microplastic removal and assimilation by fungal strains suggest a potential indicator for measuring the reduction of plastic debris in aquatic environments.

– Removal of microplastics from wastewater: The article mentions the challenge of removing microplastics from wastewater, indicating the need for indicators to measure progress in this area.

– Improvement in water quality through microplastic assimilation: The study’s focus on using fungal strains to improve water quality by assimilating microplastics suggests an indicator for measuring progress towards target 6.3.

– Reduction in microplastic waste generation: The article discusses the potential of using fungal strains for microplastic remediation as a waste management solution, indicating progress towards reducing waste generation.

SDGs, Targets, and Indicators

SDGs Targets Indicators
SDG 14: Life Below Water Target 14.1: By 2025, prevent and significantly reduce marine pollution of all kinds, particularly from land-based activities, including plastic debris and nutrient pollution – Microplastics removal from water
– Reduction in plastic debris in aquatic environments
SDG 6: Clean Water and Sanitation Target 6.3: By 2030, improve water quality by reducing pollution, eliminating dumping and minimizing release of hazardous chemicals and materials, halving the proportion of untreated wastewater, and increasing recycling and safe reuse globally – Removal of microplastics from wastewater
– Improvement in water quality through microplastic assimilation
SDG 12: Responsible Consumption and Production Target 12.5: By 2030, substantially reduce waste generation through prevention, reduction, recycling, and reuse – Reduction in microplastic waste generation
– Use of fungal strains for microplastic remediation as a form of waste management

Behold! This splendid article springs forth from the wellspring of knowledge, shaped by a wondrous proprietary AI technology that delved into a vast ocean of data, illuminating the path towards the Sustainable Development Goals. Remember that all rights are reserved by SDG Investors LLC, empowering us to champion progress together.

Source: weatherforddemocrat.com

 

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