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Invasive Species Refined: Bioplastics from Water Hyacinth

Invasive Species Refined: Bioplastics from Water Hyacinth

In a pioneering breakthrough, researchers have unveiled an innovative technique to make bioplastics from water hyacinth (Pontederia crassipes) to solve pollution and plastic waste. Leveraging the notorious water hyacinth, an invasive aquatic weed causing havoc in waterways, the scientists have demonstrated a circular approach to tackle environmental challenges.

Revolutionizing Bioremediation and Value-Added Products

Water hyacinth is endemic to South America and was introduced to North America and the rest of the world as an ornamental plant. However, once in the environment, they are infamous for choking waterways, causing damage to ecosystems, and causing over $100 million in annual control costs in the U.S. alone. However, the research team at the University of California, Riverside, led by Dr. Zhiwei Hu, discovered a way to harness the potential of this invasive plant for environmental redemption. Their technique involves using water hyacinth to absorb and break down pollutants from wastewater, addressing excessive nutrient pollution, and then converting the biomass into valuable bioplastics and fertilizer.

“We aimed to tackle two environmental problems — excessive nutrient pollution and plastic waste — with one circular solution,” explained Dr. Hu. “And we discovered the resulting bioplastics from water hyacinth perform on par with standard petrochemical plastics in terms of flexibility, durability, and strength.”

This groundbreaking approach provides a sustainable solution to the environmental issues associated with water hyacinths and offers a valuable resource for manufacturing bioplastics from water hyacinths. The researchers are investigating ways to enhance the experimental bioplastics to enable full industrial substitution for materials like polyurethane in consumer goods.

Turning a Troublesome Weed into a Resource

Fueled by excessive nitrogen and phosphorous levels in surface waters, water hyacinth outbreaks have been wreaking havoc on freshwater habitats. Creating bioplastics from water hyacinths and other valuable products could jumpstart more resilient regional bio-manufacturing ecosystems.

“The collaboration between wastewater treatment plants and our water hyacinth bioremediation technique combined with material generation is under exploration,” noted Dr. Hu. “Scaling this will help relieve stress on conventional plastic supply chains while supporting greener, carbon-conscious manufacturing.”

Towards a Greener Future: Scaling and Collaboration

The potential for scaling bioplastics from water hyacinths holds promise for addressing the challenges posed by water hyacinths and contributing to sustainable manufacturing practices. Water hyacinth is an invasive aquatic plant that can cause substantial ecological and economic damage by outcompeting native species, reducing biodiversity, and impeding water flow.

However, researchers have discovered that the fibrous tissues and polymers within water hyacinth can be extracted and used as feedstock for biodegradable plastics. By repurposing these invasive plants into valuable bioplastics, an immense potential exists for transforming an environmental burden into economic opportunity.

The research showcases the environmental benefits and highlights the economic potential of repurposing invasive plants. Scaling up bioplastic production from water hyacinth could provide a renewable, compostable alternative to conventional petroleum-based plastics.

Water hyacinth is an ideal candidate for sustainable bioplastic feedstock as an abundant and fast-growing invasive species requiring no additional land, water, or nutrient resources. If successful, this approach could present an economically viable alternative to conventional plastic production, supporting ecological resilience through invasive plant control and closed-loop manufacturing powered by renewable plant biomass.

Additionally, the bioplastics from water hyacinths offer promising mechanical properties comparable to polyethylene and polypropylene. The research indicates that water hyacinth bioplastics could replace conventional plastics in various applications. By incentivizing large-scale harvesting of invasive plants, bioplastic production can mitigate ecological damage while meeting material demands.

Unlikely Collaborations: A Key to Sustainable Solutions

The collaboration between scientists and troublesome flora exemplifies the potential for finding solutions where they are least expected. By tapping into the disruptive tendencies of invasive plants, the research opens up new possibilities for environmental redemption and industrial symbiosis.

As the world grapples with pollution and plastic waste, bioplastics from water hyacinths offer hope. It showcases the transformative power of unlikely collaborations and the ability to turn environmental challenges into opportunities for innovation and positive change. The researchers believe that such groundbreaking initiatives could pave the way for a greener, more sustainable future in both environmental conservation and manufacturing.

 

 

 


 

 

 

Source   Happy Eco News 

 

4D-Printed Seeds That Can Study the Soil

4D-Printed Seeds That Can Study the Soil

Soil plays an important role in keeping our planet healthy. Soil filters our water, provides plants with nutrients, and provides a home for billions of organisms. Moreover, the soil is an important ingredient for growing food, and it protects us against flooding and combats drought. Because soil is made in part of broken down plant matter, they contain a lot of carbon that the plants took in from the atmosphere. The capacity of carbon that soil can hold depends on climate, temperature, rainfall, soil type and depth.

Soil is under threat due to rising temperatures and biodiversity loss due to climate change. Half of the topsoil in the world has been lost in the last 150 years due to erosion. These impacts include compaction, loss of soil structure, nutrient degradation and soil salinity. Soil nutrient loss is recognized as among the most critical problems at a global level for food security and sustainability.

Because many of the effects of climate change on soil happen underground, it can be difficult to study the impacts. Scientists from the Bioinspired Soft Robotics Lab in Genoa, Italy, have developed a solution to this problem. They have designed the first 4D-printed seed-inspired soft robot. The robotic seed mimics the movement and performance of a natural seed. The seed is said to help act as a sensor for monitoring pollutants, CO2 levels, temperature and humidity in the soil.

The structure of the South African geranium inspires the artificial seed. The seeds can change shape in response to how humid their environment is. The seed can autonomously move around a terrain surface and penetrate the soil. Here, the seed can explore the soil and penetrate inside fractures, extracting energy from the environmental humidity changes. The seeds can find a home for themselves by expanding and shrinking due to changes in the water content of the air.

The seed was created using 4D printed structures as they can create dynamic morphological changes under environmental stimuli. Additionally, these structures can be programmed to reshape and perform work for any type of scenario. The seed is also strong enough to lift about 100 times its own weight. The seeds are made out of biodegradable polymers, which are activated using oxygen plasma to increase water-attracting abilities. The scientists chose these materials because they absorb and expand when exposed to humidity.

This invention could be a battery-free wireless tool for environmental topsoil monitoring. It could be a low-cost system to collect soil data across remote areas without monitoring data. It is also a relatively non-invasive way to study and monitor the soil. And the role of biodegradable materials and eco-friendly processing is fundamental for sustainable and green robotics to avoid the dispersal of new waste in natural environments. This study could be an inspiration for other researchers looking to study hard-to-reach areas that are at risk due to climate change.

 

 


 

 

Source Eco Hero News

A Consumer’s Guide to Reducing Pollution

A Consumer’s Guide to Reducing Pollution

Consumers play a major role in creating pollution. By some estimates, household consumption is responsible for the majority of air and water pollution in the world.

But by being aware of how you use water, what you toss in the trash, how you drive and how you use energy around the home, you can take some simple steps to prevent a lot of pollution.

While you may think of pollution as a global problem, reducing pollution from your household can have more immediate benefits by improving your neighborhood’s environmental health.

 



How to Prevent Air Pollution

A 2015 study in the Journal of Industrial Ecology found consumers account for 60 percent of the world’s greenhouse gas emissions.

“If we change our consumption habits, this would have a drastic effect on our environmental footprint as well,” Diana Ivanova, one of the study’s authors, told Science Daily at the time.

Pollution prevention is often a matter of consumer choices. Products that are similar can have much different effects on the environment. The way you use products from your car to lawn care chemicals can significantly affect how much you contribute to air pollution.

 

The Car You Drive

In 2017, highway vehicles emitted 18.9 million tons of carbon monoxide, according to the U.S. Environmental Protection Agency.

Such emissions play a role in the creation of greenhouse gases, such as carbon dioxide and ozone, that warm the atmosphere. And breathing in higher levels of carbon monoxide decreases the amount of oxygen that reaches a person’s organs and tissues. For a person with heart disease, the health effects can mean a trip to the emergency room or a hospital stay.

Motor vehicles also produce hydrocarbons, nitrogen oxide and particulate matter that also contribute to air pollution.

But the way you drive and the vehicle you choose can cut back on not only emissions but also how much money you spend on gas.

Let’s say you travel 15,000 miles per year and the average cost of gas is $2.83 per gallon. You can save about $700 per year if you drive a car that gets 30 miles per gallon instead of one that gets 20 miles per gallon.

And you can potentially improve gas mileage by about 10 percent if you ditch aggressive driving habits that waste gas, such as speeding, accelerating rapidly and braking.

WHAT YOU CAN DO: Driving more efficiently or driving less can reduce the amount of air pollution you put in the air. Scheduling your multiple home deliveries so they arrive on the same day can reduce pollution from delivery trucks. And keeping your car in tune and its tires properly inflated will improve your gas mileage while reducing the pollution it puts out.

 

Household Products

Consumer products from kitchen cleaners to shampoos now account for as much air pollution in urban areas as all forms of transportation, according to a 2018 study in the journal Science.

Air pollution from cars, trucks and other types of transportation has been declining as the United States and other countries have passed stricter emission standards. But there hasn’t been the same kind of regulation of air pollution from household products like kitchen cleaners and personal care products.

These products contain volatile organic compounds, also called VOCs. Once these compounds escape into the atmosphere, they can create ozone or other air pollution.

When you burn fuel in your car, only about one one-thousandth of the VOCs in your gas or diesel ends up in the air. But products like cleaners, paints, hair spray and perfumes can pump a larger percentage of their chemical pollutants into the air as they evaporate. And these chemicals can also contribute to indoor air pollution in your home.

WHAT YOU CAN DO: Look for “Low VOC” in products’ labels and make sure containers are tightly sealed to reduce evaporation. Buy products with the EPA’s “Safer Choice” label. These are products that work as well as conventional products but are safer for human health and the environment, according to the agency. You can search for and compare products in the Safer Choice database.

Energy Use

Your household energy use may create twice as much greenhouse gas emissions as your car does in a year’s time. More than 63 percent of the electricity in the United States still comes from burning fossil fuels, according to the U.S. Department of Energy. Improving energy efficiency in your home can help reduce air pollution.

The typical household spends $2,000 a year on electricity. Using Energy Star products can save you 30 percent or about $575. At the same time, you’ll avoid putting an extra 5,500 pounds of greenhouse gases into the air.

WHAT ELSE YOU CAN DO: Something as simple as turning off the lights when you leave a room can make a huge difference. A 2014 study in the International Journal of Science and Research estimated excessive use of light wastes 2 million barrels of oil every day.

 

Lawn Care

Motors on lawn and garden equipment are not as clean as the engine in your car. They may be small, but they can pump a lot more pollution into the air. And simply pouring gasoline into their tanks before you crank them up can cause air pollution, too

Gasoline spills may seem small, but there can be millions every day. Spills contribute to smog and other kinds of air pollution.

WHAT YOU CAN DO: Using electric lawn mowers or using portable gas cans with automatic sealing and shut off features are two quick ways to make your lawn care greener.

 

 

Preventing Water Pollution

Polluted runoff and storm water is considered one of the greatest threats to clean water in the United States. In urban and suburban neighborhoods, storm water and melted snow can’t easily soak into the ground. The water runs into storm drains, taking oil, dirt, chemicals and lawn fertilizer directly into streams, lakes and rivers.

WHAT YOU CAN DO: Simple steps around the home make big a difference in reducing water pollution. Pick up pet waste, keep yard clippings out of storm drains and fix car leaks before the next big rain washes oil and other fluids into your local water supply.

 

Pesticide and Fertilizer Alternatives to Prevent Water Pollution

Using alternatives to toxic pesticides can reduce water pollution. Pesticides include consumer products like Roundup or other weed killers as well as insecticides. But there are natural alternatives.

WHAT YOU CAN DO: Plant native flowers, shrubs and trees that are resistant to pests and can attract pollinators and other beneficial insects. Install bird and bat houses in your yard to combat pesky bugs. A 2018 study in The Science of Nature estimated that globally, birds eat nearly a half trillion tons of insects a year.

Take a similar approach with fertilizers. Nutrients such as nitrates and phosphates in fertilizer can overstimulate water plants and algae. Phosphorus has been called “junk food for algae.” It fuels algae growth, which kills fish and other life in waterways.

WHAT YOU CAN DO: Hire a certified lawn care professional or carefully follow label directions. Too much fertilizer can damage plants and pollute groundwater. Leave grass clippings on the ground after you mow to create a free, slow-release fertilizer. The Peace Corps also offers instructions for making your own less-toxic pesticide alternatives from natural ingredients.

 

 

Reducing Landfill Waste

The U.S. Environmental Protection Agency estimated Americans threw away more than 260 million tons of solid waste in 2015. That came to 4.48 pounds of trash per person every day of the year. More than half of the waste ended up in landfills.

More than 91 million tons of solid waste were recycled and composted in 2015. Another 33 million tons were burned to generate energy.

Paper, food and yard trimmings accounted for more than 54 percent of all solid waste in American cities. In many cases, all three could have been either recycled or composted.

Landfills also contribute to air pollution. Organic material buried in landfills creates landfill gas as it decomposes. The gas is about half carbon dioxide and half methane, a powerful greenhouse gas that traps heat in the atmosphere.

Landfills are the third-largest source of human-related methane emissions in the United States. They produced about 14 percent of methane emissions in 2016.

WHAT YOU CAN DO: Compost organic waste such as food scraps and grass clippings to keep waste out of landfills and help your lawn or garden grow. Don’t just recycle paper, glass and cans; buy products made with recycled materials. And opt for reusable products from cloth mops to rechargeable batteries instead of disposables.

 

 

25 Things You Can Do to Reduce Pollution

Everyday activities can contribute to air, water or land pollution and you may not even realize it at the time. Here are some things you can do to reduce pollution in the air, water and landfills.

 

 

 


 

 

Source – ConsumerNotice.org

Sri Lanka’s first solid waste power plant to open on the 17th of February 2021

Sri Lanka’s first solid waste power plant to open on the 17th of February 2021

Minister of Power Dullas Alahapperuma says the first power plant generating electricity using solid waste in Sri Lanka established in the Kerawalapitiya area in Hendala will be added to the national grid by Prime Minister Mahinda Rajapaksa on the 17th of this month.

The power plant is planned to generate 10 megawatts using 700 tons of garbage daily and will operate by collecting waste from the area.

The Minister said that the use of waste collected in this manner for the generation of electricity in the entire district is also environmentally beneficial.

In addition, the Ministry of Power plans to commence the first project to generate electricity from biogas using biodegradable waste in the Matara District.

 

Source: Business News LK

 

The project, which is being constructed in Kotawila in the Matara District, is planned to add 400 kilowatts to the national grid using 40 tons of garbage per day. The project is expected to be operationalized by October this year and added to the national grid.

President Gotabhaya Rajapaksa’s Vision of Prosperity policy framework marks the milestones of an innovative power generation process that goes beyond conventional power generation, and as the Minister in charge of the subject, he has been given the challenge of increasing the contribution of renewable energy to 70% of the national grid by the year 2023, Minister Alahapperuma said.

The Minister added that it was his responsibility to overcome the challenge and provide uninterrupted, quality, reliable and affordable electricity to the electricity consumers. Accordingly, steps will be taken in the future to implement the process of generating electricity from garbage as well as the process of generating electricity from biogas at the district level covering the entire island, said the Minister of Power, Dullas Alahapperuma.

 


 

Source Colombo Page

Toshiba to end construction of new coal-fired power plants

Toshiba to end construction of new coal-fired power plants

Toshiba Corp. has said it will stop taking orders for new coal-fired power plants as it makes a wider push to embrace renewable energy, though it will still complete work on about 10 further facilities.

The engineering and technology giant will continue to manufacture steam turbines, offer maintenance services for existing coal-power plants and work on the construction of plants that have already been ordered.

The shift away from coal highlights differences between equipment suppliers as they move to leave the sector behind and focus on gas turbines and renewable energy.

Samsung C&T Corp. has faced criticism over its intention to complete further coal projects before quitting the fuel, while General Electric Co. said in September it will pursue an exit from its existing obligations.

The firms are under pressure amid investor demands for action on climate change and over the prospect that tighter government policy on greenhouse gas emissions will limit scope for new coal-fired plants — even in Asia, where nations currently remain reliant on the fuel as a form of cheap electricity generation.

“Demand for new coal-power plants has been dwindling,” Toshiba President Nobuaki Kurumatani said during a media briefing Wednesday. “We started considering withdrawing from new coal-plant construction in the previous fiscal year, and finally made the decision” after the government pledged last month to become greenhouse gas neutral by 2050.

Renewable energy-related investments in Japan could total as much as ¥80 trillion ($760.6 billion) over the next decade amid national efforts to lower emissions, Kurumatani estimated.

Toshiba has existing orders for the installation of coal-fired plant facilities in countries including Indonesia and India, according to details listed on its website.

Shares in the firm rose 0.8% in Tokyo trading on Wednesday. The company also released its second quarter earnings the same day, announcing an annual dividend forecast that beat analyst estimates.

Toshiba “needs to change strategy to take advantage of growth sectors,” wrote Llewelyn Hughes, an associate professor at the Australian National University’s Crawford School of Public Policy, in an email. “Toshiba is able to make this shift because it is a diversified company, so exiting coal is not existential for them.”

The company plans to invest ¥160 billion in renewable energy for its operations through the fiscal year ending March 2023, and also aims to halve carbon dioxide emissions by 2030, including so-called Scope 3 pollution, spokesman Takashi Ebina said Wednesday.

Toshiba aims to increase annual sales from its renewable energy business to ¥650 billion by March 2031, compared to about ¥190 billion in the most recent full year. Sales from thermal coal power and hydrogen businesses amounted to ¥222.5 billion in the year ended March 31, representing 6.6% of total sales.


By Aya Takada and
Stephen StapczynskiSource: Japan Times

New York’s plastic ban begins on March 1st

New York’s plastic ban begins on March 1st
  • A year after New York passed a ban on grocery store plastic bags — the law is going into effect on March 1st 2020.
  • Retailers violating the ban will first receive a warning, followed by a $250 fine, leading to a $500 fine.

Nearly one year after New York became the second state in the nation to pass a ban on grocery store plastic bags — the law is going into effect on Sunday.

In accordance with the budge bill passed last year, New York State retailers will be banned from doling out single-use plastic bags, starting on March 1. California and Hawaii already have their ban in place and now New York is one of eight states inching toward implementing the ban, as Gothamist reported.

 

York is one of eight states inching toward implementing the ban.
Image: National Conference of State Legislatures

 

Some New York municipalities will also charge a five-cent fee for people who want a plastic bag, though that fee will be waived for customers using food stamps to make their purchases. The five cents will be used as a tax, with two cents going to local governments, and three cents going to the state’s Environmental Protection Fund, as the New York Post reported.

The governor of New York, Andrew Cuomo, tweeted when the ban was first set to pass, “Plastic bags have blighted our environment and clogged our waterways. By banning them, we will protect our natural resources for future generations of New Yorkers,” as EcoWatch reported.

Now Cuomo is looking forward to seeing the bags gone.

“It’s no doubt that this is smart; you see these bags all over the place,” Cuomo, who added that the bags hang in trees like “bizarre Christmas ornaments,” said as WRVO Public Media reported. “I’ve been 30 miles out in the ocean and you see garbage floating and plastic bags floating. It’s terrible.”

The Department of Environmental Conservation (DEC) has recently increased its efforts in recent days to help New Yorkers understand the new rules. The department has run ads on social media and videos on its website and YouTube channel, according to WRVO Public Media. The DEC is also distributing 270,000 reusable bags to low and middle-income families to help them ease into the transition.

The plastic bag ban will apply to all retailers that collect sales tax, including grocery stores and bodegas. The DEC claims that currently more than 23 billion plastic bags are used each year and only for 12 minutes, according to the state Department of Environmental Conservation, as the New York Post reported.

There are exceptions to the ban. According to Gothamist, plastic bags can still be used for:

  • Uncooked animal products or other non-prepackaged food
  • Flowers, plants, or other items that require plastic to avoid contamination, prevent damage, or for health purposes
  • Bulk packaging of fruits, vegetables, grains, candy, hardware products like nuts, bolts, and screws, live insects like crickets, fish, crustaceans, mollusks, or other items that require a waterproof bag
  • Sliced food or food prepared to order
  • Newspapers for subscribers
  • Prepackaged plastic bags sold in bulk, such as garbage bags, sandwich bags, or bags used for pet poop pick-up
  • Dry-cleaner or laundry service clothing bags
  • Pharmacy bags for prescription drugs

While the law goes into effect on Sunday, the DEC will actually not enforce it for a few more months as stores and customers adapt to their plastic bag-free shopping. Once it does enforce the law, retailers violating the ban will first receive a warning, followed by a $250 fine, leading to a $500 fine for subsequent violations in the same calendar year, as Gothamist reported.

Environmental advocates are pleased with the ban, but worry about a loophole that allows for thicker types of plastic bags. While they are not yet commercially made, environmental advocates worry the plastic bag industry will start to manufacture the thicker type of plastic bags.

“It was most unfortunate,” Judith Enck, who runs Beyond Plastics at Bennington College and worked at the EPA under President Obama, said to WRVO Public Media. “Why even open the door to that?”