Eco-friendly, self-regenerative fiber material recovers valuable metals from industrial wastewater


by National Research Council of Science and Technology

Technology to recover valuable metals from wastewater generated in various industries such as plating, semiconductors, automobiles, batteries, and renewable energy is important not only for environmental protection but also for economic reasons.

In Korea, chemicals are mainly added to wastewater to precipitate heavy metal ions in the form of oxides, but accidents such as leakage of hazardous chemicals have occurred one after another, so it is necessary to develop more eco-friendly technologies.

Against this backdrop, the Korea Institute of Science and Technology (KIST) announced that Dr. Jae-Woo Choi’s team at the Water Resource Cycle Research Center has developed a fiber-like metal recovery material that can recover metal ions in water by adsorbing and crystallizing the metal, and the recovered metal crystals can desorb and regenerate themselves.

The study is published in Advanced Fiber Materials.

The KIST research team has developed a semi-permanent adsorption material by utilizing the phenomenon that metal ions in water crystallize when certain chemical functional groups are fixed on the surface of a fiber-like material and introducing a technology to remove the formed crystals. When tested with copper ions, the maximum adsorption amount of existing adsorbents is only about 1,060 mg/g, but by utilizing the developed material, near-infinite adsorption performance can be secured.

In addition, existing high-performance adsorbents are in the form of small granules with diameters ranging from a few nanometers to tens of micrometers, making it difficult to utilize them underwater, but the metal recovery material developed by the KIST research team is in the form of fibers, making it easy to control underwater, making it easy to apply to actual metal recovery processes.

“Since the developed material is based on acrylic fibers, it is not only possible to mass produce it through a wet spinning process, but also to utilize waste clothing,” said Dr. Jae-woo Choi of KIST. “The wastewater recycling technology will help reduce the industry’s dependence on overseas sources of valuable metals that are in high demand.”

Study Says Some Men Avoid Being Eco-Friendly Because It Looks ‘Less Manly’


It’s no secret we all need to pull together to help ease pressures on the environment, but there could be a compelling psychological basis for why many of us aren’t doing everything we should to help save the planet.

 

A recent report based on seven studies involving a total of more than 2,000 subjects found that both men and women associated eco-friendly behaviours and products with being feminine – which scientists say could contribute to men not embracing environmentally conscious conduct, for fear of it undermining their manliness.

“Previous research shows that men tend to be more concerned about maintaining a masculine identity than women are with their feminine identity,” says consumer psychologist James Wilkie from the University of Notre Dame in Indiana.

“We therefore thought that men might be more open to environmental products if we made them feel secure in their masculinity, so they are less threatened by adopting a green product.”

In a series of experiments, Wilkie and fellow researchers surveyed men and women’s attitudes to eco-friendly products and shopping behaviours, to examine the limits of what the team call the “green-feminine stereotype”.

Previous studies had found evidence that men use more energy than women – and recycle less while littering more – but the reasons for why haven’t always been clear.

Some research has suggested the difference in men and women’s personalities – specifically, our levels of altruism – could explain how environmentally conscious we are, but Wilkie’s team says the psychological link between eco-friendliness and femininity could be another important basis.

Of course, it seems kind of silly to think that men worldwide might be shunning environmentally responsible ways of behaving because it could make them seem less macho – but as the researchers found, both men and women in the surveys associated being green with being feminine, not just the male respondents.

“In one experiment, participants of both sexes described an individual who brought a reusable canvas bag to the grocery store as more feminine than someone who used a plastic bag – regardless of whether the shopper was a male or female,” the researchers explained in a post at Scientific American this week.

“In another experiment, participants perceived themselves to be more feminine after recalling a time when they did something good versus bad for the environment.”

As funny as it might sound, if these results pan out, what the team has found here could be a galvanising call to arms for marketers and environmental activists generally – an opportunity to examine how being eco-friendly can be rebranded in ways that are more palatable to men’s macho self image.

Some of the research looked at ways of doing just that, with one experiment gauging how much a nature charity brand appealed to men and women.

When the charity was called “Friends of Nature” (with a bright green logo featuring a tree), it appealed to women – but men preferred the same charity branded as “Wilderness Rangers”, featuring a wolf howling at the Moon.

These kinds of marketing alterations are readily used to appeal to consumers in other areas, the researchers say, and it could be time for the same kind of gender-based branding to maximise appeal for environmental products.

“Body wash used to be considered a very feminine product, but companies changed that perception by marketing their products in a more masculine fashion,” says Wilkie.

“It worked – as it also did for diet soft drinks. Again, there was a perception that ‘diet’ products were for women. Marketers changed their phrasing to ‘zero-calorie’ drinks.”

Of course, from a sociological perspective, some say it’s a serious cause for concern that environmentally conscious behaviour and products repel men, just because they’ve somehow become linked with femininity in our minds.

“That says what’s feminine is bad, is lesser, is second class,” director of the Women’s, Gender, and Sexuality Program at Boston University, Carrie Preston, told The Washington Post last year.

That’s a fair point, and something else we really have to work on.

But while we’re at it, let’s not forget we might be doing the planet a major disservice if we don’t figure out how to make eco-friendly things appeal to men – and their seeming obsession with being manly at all costs.

“It’s not that men don’t care about the environment,” the researchers write in Scientific American.

“But they also tend to want to feel macho, and they worry that eco-friendly behaviours might brand them as feminine.”

Affordable, Eco-Friendly and Energy Efficient: How Re-Purposed Plastic Waste is Helping to Solve Humanity’s Housing Crisis


“In Latin America, Africa and Asia 40% of people don’t have access to formal housing. In Bogota alone 750 tonnes of plastic is sent to landfill every day. It can take up to 500 years for plastic to biodegrade and 75% of plastic produced globally is either sent to landfill or not formally disposed of and so is left to pollute the environment.” ~ Unilever Sustainable Living

According to EcoWatch: Enough plastic is thrown away each year to circle the earth four times. Ninety-three percent of Americans age six or older test positive for the plastic chemical BPA. Billions of pounds of plastic can be found in our oceans, and all-out bans on plastic bags and bottled water are making little headway. To make matters worse, conventional recycling programs are ineffective at best; only two types of plastic are widely recyclable, and even then, it’s downgraded into other products which cannot be recycled further, eventually ending up in landfill, or worse, in the ocean, where plastic seriously harms wildlife, the ecosystem and our health.

While eliminating our dependence on plastic is imperative, we still have to face the reality of the plastic jungle we’ve created. So, besides educating ourselves about the dangers of plastic and avoiding it as much as possible, what options are available to minimize the impact of plastic pollution? As luck would have it, a few innovative individuals are using trash-bound plastic material in a truly inspiring way: to construct much needed shelter and housing.

Reduce Plastic Waste, Gain a Home

Oscar Andres Mendez Gerardino is a 34-year-old architect concerned about the state of the environment — as well as the lack of decent housing for his fellow humans. Joined by Henry Cañon, Isabel Cristina, Fernando Llanos and Jesus Mendez, the team launched Conceptos Plásticos in 2010 — a Colombian venture that aims to replace informal settlements with permanent housing, while also reducing plastic waste.

The company takes different types of plastic and, through a process called extrusion, blends the material with rubber to make low-cost, safe and durable “LEGO-like” interlocking bricks. Conceptos Plásticos also includes an additive to render the blocks fire-resistant. Since they’re plastic, the structures are resilient to earthquakes as well. Easy to construct — and also to dismantle and relocate — the buildings are 30 percent cheaper than traditional housing in rural areas. A standard home can be built for just US$5,200.

“So far, Conceptos Plásticos has built a temporary shelter for 42 families displaced by violence, three smaller permanent shelters (each one measuring 1,100 square meters), and eight houses.” [source]

Affordable, Eco-Friendly and Energy Efficient - How Re-Purposing Plastic Waste is Helping to Solve Humanity's Housing Crisis - fb

Plans are also in the works to build 20 additional houses in the port city of Cartagena on Colombia’s Caribbean coast.

“We hope to create a movement where more and more people get involved. We want to develop new products that make better use of the thousands and thousands of tons of plastic that is discarded. There will soon be more plastic in the sea than fish, so we really need to do something big,” Oscar told Forbes.

Meanwhile, on the other side of the world, in a culture much different than Colombia, another kind of “plastic waste revolution” is taking place — only this time, discarded plastic bottles are used directly as a building material.

How to Turn 7,800 Plastic Bottles Into an Energy-Efficient, Eco-Friendly Building

Similar to Colombia, Nigeria has a mounting plastic waste problem that’s causing pollution, erosion, health issues and irrigation blockages. Every year, millions of plastic bottles are dumped into waterways and landfills. But thousands of plastic bottles that would otherwise contribute to this growing problem have been diverted to create strong — and surprisingly attractive — homes in the village of Yelwa.

Affordable, Eco-Friendly and Energy Efficient - How Re-Purposing Plastic Waste is Helping to Solve Humanity's Housing Crisis - Nigeria

John Haley of ECOTEC — the firm training locals in the building technique — said the bottles (all 7,800 of them) are filled with dry soil or construction waste, and then placed like bricks in rows which are secured together with mud. The end result is a well-insulated and inexpensive structure that resists bullets and earthquakes — an important consideration for the unstable northern regions of the country.

Moreover, the design is beautiful with curved walls and exposed bottoms of the bottles, which are suggestive of mosaic patterns. The structure is sturdy as well. “Compacted sand inside a bottle is nearly 20 times stronger than bricks,” said Yahaya Ahmed of Nigeria’s Development Association for Renewable Energies. “We are even intending to build a three-story building.” It also costs about one-third of what a standard house of concrete and bricks would run.

The house has four rooms (one bedroom, living room, bathroom and kitchen), urine filtration fertilization system, water purification tanks, and is solar powered with a fuel-efficient cook stove — reports the environmental blog Eco Nigeria.

If you’d like to try your hand at creating your own plastic bottle house, Instructables offers this easy-to-follow guide. Or if you’re not quite ready to take the plunge, have a look at “22 Facts About Plastic Pollution (And 10 Things We Can Do About It)” by EcoWatch for ideas on how to curb our plastic waste.

Watch the video. URL:https://youtu.be/0-44uHh5BM8

Will Mushroom-Based Materials Replace Plastic With an Eco-Friendly Twist?


As we well know, plastic is a serious issue throughout the world today. It takes hundreds — sometimes thousands — of years to biodegrade, releases toxic materials into the environment and harms marine wildlife. The problem is so dire that scientists believe plastic waste in the ocean will outnumber fish by 2050. We are literally unloading a dump truck full of plastic into the sea every minute. Not only does this toxic waste hurt wildlife and the environment, but it also makes its way into the food chain — and ends up on our dinner plates. Chemicals in plastics are linked with a spectrum of human health disorders, spanning from endocrine imbalances to cancer and heart disease.

Will Mushroom-Based Materials Replace Plastic With an Eco-Friendly Twist

Recycling the material is sketchy at best and even corn-based biodegradable plastics come with their own set of drawbacks. But it’s naive to think the material will disappear all together. What we need is an eco-friendly solution that will serve the purpose of plastic without consuming an inordinate amount of resources or displace the food supply. The answer might just be found in the most incredible of places: fungus roots.

Flexible, functional and sustainable

Fungus probably isn’t the first thing to come to mind when we think of an eco-friendly superhero or a plastic substitute. But where there’s a demand, industry responds. As more people are becoming aware of the fact that we are unquestionably drowning in plastic, consumers are apt to support companies who adopt creative solutions. It’s a win-win situation — the company can use this innovation as a marketing tool, while consumers (and the environment) benefit.

Mushroom packaging uses readily available waste like corn husks or stalks to create biodegradable packaging. Mycelium is the root structure of fungus that grows in a pattern of long strands, attaching itself to whatever is available close by, whether soil or, in this case, a specific packaging mold. Within a few days, these fibers bind together — creating a solid and strong material. The packaging was developed by American company Ecovative in a bid to replace polystyrene, which is very difficult to recycle and can take thousands of years to decompose. In contrast, mycelium packaging can be tossed into the garden where it will biodegrade naturally within a few months — faster if it’s composted.

Polystyrene — otherwise known as styrofoam — is a massive problem for the environment right now. Developed by Dow Chemical in 1944, it’s still widely used for packing peanuts and coffee cups, as well as fast-food clamshells. It also serves as insulation for buildings. The chemist who invented styrofoam stumbled upon it while seeking an alternative for rubber insulation. Tragically, the material breaks down very slowly and never truly disappears, at least not in our lifetime or that of our children nor grandchildren. When styrofoam does break down, it releases styrene, a known carcinogen.

Writes Ian Frazier for the New Yorker:

“After Hurricane Sandy, its clumps and crumbs covered beaches along the Atlantic Coast like drifts of dirty snow. Pieces of Styrofoam swirl in the trash gyre in the Pacific Ocean and litter the world’s highways and accumulate in the digestive systems of animals and take up space in waste dumps.”

A healthier alternative for both the environment and humans is found with mycelium packaging. Here’s how the process works:

  1. Agricultural waste like corn stalks are steam-pasteurized and chopped up.
  2. Trace nutrients are added along with a small amount of water.
  3. Mycelium pellets are mixed in and the mixture is put into a mold shaped like a piece of protective packaging.
  4. The mold is placed on a rack in the dark.
  5. Four days later the mushroom roots have grown throughout the mold, creating “a material almost indistinguishable from Styrofoam in form, function, and cost.”
  6. Heat is applied to kill the mycelium and halt growth.

Mushroom packaging can be made anywhere, utilizing local waste from agriculture with very little energy. Ecovative ultimately hopes to replace plastics on a global scale.

Will Mushroom-Based Materials Replace Plastic With an Eco-Friendly Twist 1

Futuristic fungus technology

Founded nine years ago, Ecovative has grown in leaps and bounds — doubling in size every year and employing over 60 people at its Green Island, New York factory. The company has licensed its process for mushroom packaging to Sealed Air, a $7.6-billion international packaging supplier largely known for Bubble Wrap. Other customers include Steelcase, Inc. (an office furniture company), Dell computers, Crate & Barrel and Puma athletic gear. Swedish retail giant Ikea is also looking into using the product. But packaging isn’t the only outlet for fungus technology.

Mycelium can be grown within wood pulp, resulting in a material similar to cork. In the Netherlands, designer Eric Klarenbeek is making durable furniture with the process. Using a 3D printer with potato starch as the printing filament, the model is purposely porous to support mycelium growth. Once the fungus has fully incorporated itself throughout the model, it’s baked to kill the mycelium. The end result is a sturdy piece of furniture that supports the weight of an adult. Additionally, Maurizio Montalti, also a designer, demonstrates how fungus is exceptionally flexible and can grow into an elastic, rubbery material along with more plastic-like products. And, for the conventional plastic that’s still with us, there’s even a fungus-based solution for that problem with a plastic-eating mushroom from the Amazon rainforest.

Are mushrooms the new plastic?

Product designer Eben Bayer reveals his recipe for a new, fungus-based packaging material that protects fragile stuff like furniture, plasma screens — and the environment.

THE POWER OF RECYCLING: 5 ECO-FRIENDLY IDEAS TO A SIMPLER LIFE


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For the last couple of years I have been on the path of simplifying my life, slowly and gradually, one step at a time. It hasn’t been always easy or straightforward but definitely worth every single effort or pitfall. The core idea behind the philosophy of simple living is to live a more authentic and meaningful life with your bare essentials. In other words, having a fuller life with less stuff. Less stuff means a whole range of things – from knick knacks to valuables, gadgets you will dispose off after a few months, extra activities and commitments on your agenda, down to mental stuff as in thoughts and beliefs you shouldn’t carry around anymore. Simpler living is about letting go of stuff that doesn’t belong to your life purpose.

Following this philosophy directly or indirectly implies that you start living a more conscious and eco-friendly life. The reason is that you are less driven by unconscious habits or impulses and no longer following the mass consciousness lifestyle of over-consumerism and ego-based life choices. You turn the switch from ego to eco – the most remarkable shift you can ever do in your life.

When I take decisions, I now evaluate and put into consideration the eco-cost of it but from a more practical and simple way that is eco-friendly nonetheless. For example, the questions I ask myself are: “How can I adopt an eco-friendlier lifestyle without going through a lot of hassle and complications?” ; “What simple things can I change that make an impact and a difference to the environment and myself?”; “What can I do right now with the least money and the least work to make a change?”.

 

It turns out that these are quite a few simple things that one can do right now and which do not require a lot of time, effort or money. So what I am about to suggest is a simple lazy guide to do small but significant changes today – hassle free. You know when it gets really simple and easy then we do not have any excuses left to procrastinate with taking action.

Here are some ideas:

 

1. Simple Solar Power Solutions:

 

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Having solar energy feeding your home’s electrical demand is one of the cleverest ways to have clean, cheap and environment friendly energy. Although the capitalcosts of solar energy systemscan be of a key factor when deciding to go solar or not, when putting all the numbers on paper it turns out that the amount of cost-saving accrued over a certain period of time outbalances the initial costs of purchasing the system.

Moreover depending on your country and area, there are several companies nowadays selling solar energy systems and that can offer different pricing plans and financing options to suit your needs and budgets. Whichever the option, if you are a property owner, going solar will always return on your investment. It might take from a couple of years up to perhaps five years to get even on your initial costs – depending on your consumption and the power of the system you purchase. I know a lot of people who have installed enough photovoltaic panels to generate more than the power demands of their household and hence end up selling the surplus energy back to the grid leaving them with a credit rather than a debit on their utility bills.

Besides cost-saving and eco-friendliness, other benefits of going solar include becoming more independent and ultimately a step further in simplifying life overall.

 2. Selling your Used Smartphone or Tablet:

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I think that one of the greatest wastes and burden to the environment are consumer electronics because they have a limited lifespan after which we dispose of, creating white goods waste. People who want to always be on top of the current IT trend will change smartphone or tablet within two to three years on average. Collectively this creates a big need for recycling. A smart way of  ‘recycling’ consumer electronics is selling it to others who perhaps are not that keen on having the latest model but can happily live with a device that hasn’t the latest specs.

Technollo offers an easy and comprehensive system to sell your smartphone and tablet. You justsignup, list your device and price, receive the shipping kit and just sell! All orders have USPS option for shipping kit that are sent to you with prepaid label attached. You then simple get paid for your sale through Paypal after 24-48 hours or if you prefer via cheque.

3. Fast Composting in your Kitchen:

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Composting is the perfect example of recycling in action. The beauty of it is that the whole cycle is happening right in your home from the kitchen to the garden or pots. Creating compost is not a particularly difficult process – basically turning food scraps into something you can grow your plants into. Yet such a process can be simplified even further by using certain helpful tools. For instance I found this product – Green Recycler –  an award winning appliance the size of a coffee machine that sits right on top of  your kitchen top. It is designed to easily turn food scraps into compost ten times faster and in an eco-friendly way. It has easy clean-up components and can hold one gallon of shredded scraps. Find out more here

4. Renting Book Titles & Saving on Paper & Clutter:

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If you’re someone who reads a lot of fiction titles or have kids at home who love to read, you can end up with piles of books which are essentially piles of paper. The thing with fiction titles and children books is that they have less value on the shelf then say non-fiction titles or reference books since one rarely returns to the same book after reading it once. A convenient new approach, especially if it’s a hassle for you getting to the local library, is to rent them out. There are services such asBooksfree which essentially cater for this. Booksfree is like the Netflix for books. Subscribers can have access to more than 250,000 titles including children’s books and audiobooks and can daily rent them online.

5. Eco-Conscious Gifts:

 

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Gifts are something that we constantly give or receive throughout the year. There’s always an occasion that requires a gift – Birthdays, weddings, graduations, etc. Yet we can get smarter and eco-conscious when it comes down to choosing and buying gifts. To be honest I am not someone who is keen on choosing gifts – it’s not my forte – but when I do I try to choose something consciously. I hate the idea that gifts become an unconscious automated routine like just getting something from a shelf just for the sake of custom and social etiquette. If you have to buy a gift, choose it from the heart and if possible make sure it has little eco footprint. There are many places on the internet to but eco-friendly gifts. One suggestion is Gifts with humanitywhich sells fair trade and Eco-friendly stuff like accessories, clothing, jewelry, handbags and home decode among other things.