Search for any green Service

Find green products from around the world in one place

Researchers In Syria Have Discovered Concrete Recycling Method

Researchers In Syria Have Discovered Concrete Recycling Method

War is hell. This sentiment has been repeated throughout human history as the devastation and destruction of countries and communities it causes is incalculable. Syria is a prime example of how civil or otherwise war can destroy a society and its infrastructure.

The war began in the context of high youth unemployment, drought, a one-party dictatorship that crushed basic human freedoms and dignity, and extreme wealth inequality. It was a surprise to no one that in 2011, insurgency by oppressed groups in the region began in earnest, spiralling Syria into a conflict that continues to this day with no end in sight. The devastation this war has brought has caused 5.7 million people to flee the country due to the risk that the war has brought to their lives.

The war destroyed 130,000 buildings, many of these the homes of everyday people and their businesses. All this destruction is horrible, and as if they hadn’t experienced enough of it, Syria fell victim to a 7.7 Richter earthquake in February, expanding the damage even further. However, despite all this horrific destruction, serious efforts have been made to expedite the recovery and reconstruction of this battered country. 70% of the 130,000 buildings destroyed were made of reinforced concrete. Scientists have discovered that they can use a significant amount of this rubble to create new concrete, recycling what is there and saving costs compared to importing new concrete.

The study led by Professor Abdulkader Rashwani proved that recycled concrete made from the rubble of old buildings doesn’t significantly impact the mechanical performance of the new concrete. This is the first time recycled concrete has been proven to do this, as other attempts in other countries have been made. Still, due to the disparity in methods of manufacture, mechanical performance hasn’t been guaranteed. When people return, they will want to rebuild the buildings that had been destroyed.

Transportation of raw materials is one of the highest costs, and aggregate being increasingly scarce makes recycling existing materials necessary. This recycled concrete is made by crushing the rubble, removing any steel or textiles, and washing the resulting aggregate. The fine material washed out is sand and cement, and it is also being studied to determine if it can be reused.

The material was then tested for tensile and compressive strength and how much water, co2, and chlorine were absorbed. The concrete passed all of the tests, and now the protocol stands as a model for other war-torn or earthquake-damaged countries to rebuild their cities and communities. In an interview with the Guardian, Professor Rashwani said, “It was our duty to help the people there, a lot of people needed our help, so we went there and forgot about all the bad consequences. We have now started to go to some local councils and help them to put some plans in place for the future. We can at least try to make this region safer and give people some hope.”

The costs of war and conflict between nations and nations between people are often horrendous and often borne by the innocent. Most of the buildings destroyed in the fighting were homes of families and individuals who had nothing to do with the war. Yet still, they are left without homes in their home countries. Having a plan with new methods to guarantee quick reconstruction of these buildings is crucial.

The added benefit of this research is that it is a model that can be applied in other places outside Syria. Syria is simply one country at war right now, and if the path of human history indicates what’s to come, it won’t be the last one either. This research is invaluable for the everyday people ravaged by conflict or disaster, now and in the future.

 

 


 

 

Source Happy Eco News

New Beer Made from Treated Wastewater Highlights Potential of Water Reuse

New Beer Made from Treated Wastewater Highlights Potential of Water Reuse

While it’s not the first time it’s been done, Epic OneWater Brew is the latest and perhaps the highest-profile attempt at using treated greywater to make something potable — in this case, beer.

The effort used an intensive filtering and disinfection process to purify 2,000 gallons of water from a San Francisco high-rise to create a “blank slate,” drinking-water-quality product. From there, Epic Cleantec — whose OneWater onsite water-recycling system made Time’s Best Inventions of 2022 list — physically moved that water via totes and trucks to Devil’s Canyon Brewing Co in nearby San Carlos, where brewery owner Chris Garrett and his team created a Kolsch from the liquid.

“It ended up being a really great product,” Garrett told Sustainable Brands.

What makes this version of a recycled-water beer different is the sourcing.

“What’s interesting about Epic is that this is the first example of using water that’s come out of an onsite recycling system,” says Travis Loop, producer and host of water-related media outlet Waterloop (Loop is also a lead organizer of the Pure Water Brewing Alliance, which advocates for responsible water use and reuse in the beer business.).

The process works like this: First, greywater from residential building Fifteen Fifty (which recycles up to 7,500 gallons of water per day, or up to 2.75 million gallons per year) is collected from laundry and showers. Then, it’s treated through Epic’s combination of ultra-filtration (filtering out impurities to the diameter of a human hair follicle), disinfection with ultraviolet light and chlorine, and a granulated activated-carbon (GAC) filter (for reduced mineral content), and typically reused for toilet and urinal flushing within the building. Scientifically speaking, the recycled water is treated to an extremely high level of purity that meets (or even exceeds) federal drinking-water quality standards.

But for this project, 2,000 gallons of that treated water was toted about 30 minutes south on the peninsula for the beer collaboration.

“Typically, a project like this has only been done through a utility,” says Epic Cleantec CEO and co-founder, Aaron Tartakovsky. “Brewers have so much knowledge about water chemistry; so, we wanted to find a contract brewer who would be interested.”

The final result was 7,000 16-oz cans of beer — not available for commercial sale but distributed to an array of water professionals and beer fans, along with a cameo at the recent UN 2023 Water Conference in New York City.

A rep from Epic says the beer “really made the rounds at the conference” and “several breweries reached out to learn more about collaborating.”

Drawing attention to a larger issue.
Of course, the goal of a collaboration like this is to highlight water conservation in a part of the water cycle many don’t really think about.

“We’re a ‘flush and forget’ society,” Tartakovsky says.

US wastewater-treatment facilities process approximately 34 million gallons of water daily; so, there’s seemingly unlimited potential to find new ways to reuse the water that simply goes down a drain.

These brewery/treated-water collaborations have been somewhat of a forefront for the conversation/reuse conversation, with Loop noting at least 100 brewers (both home and professional) who have produced a similar beer to OneWater Brew over the last decade.

“(These beers) are a great public-awareness tool,” he says.

The state of Colorado was a recent example of the movement gaining steam as the latest state to legalize the use of direct potable reuse (DPR) water with Florida, Arizona and California also looking into similar measures. The goal is to help water customers get over any preconceived notions of treated wastewater and redirect it for potable uses.

Everyone involved hopes that the more these collaborations occur, the more they can get people talking about water.

“We should judge water by its quality, not its history,” Loop says.

 

 


 

 

Source Sustainable Brands