Thursday, 31 October 2019

Technical Report draft 1; Solutions

2. Proposed solutions
The team researched the current happenings in other countries and found that some of the solutions can also be applied in the context of Singapore to encourage the reduced use of plastic as a material for beverages.

2.1 Dispenser-Type Beverages
2.1.1 Dispenser for packaged drinks
Evian (2019) has officially revealed their new product called “Evian (re)new”. This new product is a dispenser-styled “water appliance” that dispense water designed for home use. It contains a 5-litre water container that will sag after water is dispensed.  This new design is notable as the water container is made with “100% recycled plastic” and can be totally recycled. When compared to the traditional 1.5-litre water bottle also made by Evian, it uses two-thirds lesser plastic to produce.

PepsiCo (2019) has launched a new “hydration platform” in the form of a smart dispenser. The consumer will bring their own bottle/container to the smart dispenser, then the dispenser will scan the consumer’s unique QR code and dispense according to the consumer’s choice. As the smart dispenser system uses QR code, it will remember the consumer’s preferences. It will also automatically track the daily consumption of fluids by the number of refills and the reduced “environmental impacts” by using the system.

In Singapore, there is no such initiative currently. As such, the team recommends Singapore to adopt this for research of feasibility.

2.1.2 Dispenser for Hawker Centre-styled setting
In some of Singapore’s hawker centre, there exist dispensers for common drinks like hot coffee and tea. The drinks operator will make the drink in bulk, then they will put it in the dispenser and consumers fill their own cup whenever they want to. The use of such dispensers for beverages in stores can help to reduce stress on Singapore’s plastic problem by encouraging consumers to use their own containers and reduce the need for unnecessary packaging.

2.2 Rental cups
The current beverage stalls normally provide a plastic cup when a consumer makes a purchase. Mahmud (2019) stated that “A new service recently launched in Singapore wants to replace single-use plastic in takeaways with reusable cups and containers that customers can rent technically for free.” With such service availability, consumers do not need to bring their own cup and are still reducing the use of plastic.

2.3 Using sustainable material as an alternative
2.3.1 Glass (for bottles)
Glass bottles could be an alternative material for bottled drinks. Opting for glass as a replacement would be feasible as there are many benefits it brings. Firstly, glass is fully recyclable and can be recycled endlessly without degrading its value. Next, a massive amount of natural resources are saved for every ton of glass that is recycled. Lastly, recycled glass is substituted for up to 95% of raw materials.

According to one of our group mate’s experience, the restaurant she worked at previously reused all the chilli bottles instead of throwing them away and replacing them with new ones. Every night, there will be a staff assigned to wash the chilli bottles that were almost empty and would then refill with a new batch of chilli from the can.

2.3.2 Stainless steel (for straw)
Stainless steel is versatile yet one of the most environmentally friendly materials. Stainless steel is corrosion-resistant, durable, have high-recycled content and recapture rates, provides long service life and reduces resource use. Even if stainless steels are not recycled, they would not have any damaging effects on the soil or groundwater of the landfill.

3. Benefits proposed solutions
3.1 Dispenser-Type Beverages
The use of dispensers encourages people to store their favourite beverage in their own bottles. It reduces the need for plastic bottles to be manufactured for the beverages. Also, plastic bottles and cups’ usage will decrease, hence providing savings for businesses.
Beverages that normally comes in bottle form can now switch to syrup form and install in the dispenser. This will not only cut down the plastic bottle usage and also help the consumer to have a good habit of bringing their own cup all the time. Such dispensers allow better efficiency because customers will no longer require another person to get the drinks for them.

3.2 Rental Cups/containers
Rental cups/containers allow customers to patronise stores that only provide disposables takeaway without producing packaging wastage. This is good as the savings on the packaging can be utilized elsewhere. Also, reduce the hassle for consumers to bring their own cups/containers which encourages the consumers’ participation.

3.3 Using sustainable material          
Glass bottles can be reused and recycled, this creates an ecosystem where glass can be used multiple times and provide convenience to users at the same time. The amount of energy used by reusing a glass bottle is lesser than recycling plastic waste, which makes it more environmentally friendly.

Aluminium and steel are metals that can be used to make cups and straws respectively. Metals are known to be durable and can last a long time in terms of wear and tear. Thus, the use of aluminium cans and steel straws can reduce the need for manufacturing plastic for beverages in the long term.

4. Limitations of proposed solutions
4.1 Dispenser-Type Beverages
In today’s throw-away culture, such practice of utilizing our own bottles for beverages is uncommon. Thus, it might be a hassle for consumers to bring their own bottles if they do not have the habit of doing so. Evian Re(new) adopts the same way as to how a normal water cooler dispenser works where the water is replaced per container. However, the container is not easily purchasable, unlike the water cooler dispenser where there are many different companies to purchase from.

It is only limited to homemade drinks such as milo and coffee. This might also lead to uneven mixture over a period of time and difficulties in maintaining the temperature. A consumer might abuse the rule by taking more than what they paid for. The last challenge that will be faced is the ability to tell whether it is empty.

As compared to noncarbonated drinks, carbonated drinks require a carbon dioxide tank (CO2 tank) to produce the carbonated effect. A CO2 tank that contains 31kg of carbon dioxide can last up to 3 months depending on usage. This will also require additional manpower to replace the CO2 tank.

4.2 Rental Cups
The system of having cups and containers for rent requires huge logistic work. Furthermore, it relies heavily on users to follow the practices. Customers might not be able to return the item on time and in good condition. As this system is currently not implemented widely, users might not be able to have access to the system. This makes it inconvenient for visitors to make a trip to return the item.

Also, the system is prone to abuse, people might not treat the items with care and will result in problems such as the lack of proper sanitation which might cause other users to suffer from food-related illness.

4.3 Sustainable material as an alternative
Even though glass is superior in terms of the amount of carbon footprint it leaves behind, there are some drawbacks that make plastic more preferable as compared to glass. Some drawbacks are weight and fragility. Glass generally weighs heavier than plastic which means more trips are required when transporting packaged goods which would lead to larger environmental impact. To add on, glass has the tendency of breaking easily. This means if a glass bottle is knocked over, it would leave a mess behind and it would be dangerous due to the small fragments.

Since stainless steel, it is a good conductor to heat, the straws made from stainless steel cannot be used for hot drinks. Also, stainless steel straws might pose a hygiene problem if it is not cleaned properly. As straws are long in nature, it will be difficult to reach the inner side of the middle section of straw when washing.


References: 
Evian. (2019, April 15). Evian Launches Evian (Re)new – An In-Home Natural Mineral Water Appliance Featuring “Breakthrough” Sustainable Design. [Press release]  
Retrieved October 31, 2019, from

Mahmud, A.h. (2019, January 23). New service aims to cut out single-use plastic from takeaways, rent out containers for free. Channel News Asia.
Retrieved October 31, 2019, from

PepsiCo. (2019, April 24). PepsiCo Goes Beyond the Bottle with New, Mobile-Enabled Hydration Platform.
Retrieved October 31, 2019, from

Yalcinkaya, G. (2019, April 20). Evian to launch collapsible “bubble” to combat plastic waste. Dezeen.
Retrieved October 31, 2019, from


Monday, 28 October 2019

Technical Report; Draft #1: Improving plastic waste management by reducing and recycling single-use plastics from beverage shops.


Background

This report responds to a call for proposals to recommend solutions to specific problems in a particular area of focus. The team decided to work on plastic waste management in Singapore, focusing on the beverages’ packaging waste.
Single-use plastics are a popular choice amongst consumers due to its advantages such as low cost and convenience. With higher demand, there will be a surge in plastic production. According to the World Economic Forum (WEF), plastic production around the world saw a dramatic increase from 15 million tonnes in 1964 to 311 million tonnes in 2014. The number is expected to double again over the next 20 years.
With ever-increasing plastic being produced, this implies that plastic waste will also rise. As a significant amount of plastic waste is being produced, it is crucial on how effectively it can be managed as plastic is a type of material that is difficult to biodegrade, which will result in it lasting a long time in this world.
Due to the long lifespan of plastics, those that are not properly disposed of will cause a variety of problems. One of the problems would be water pollution. When plastics break down into microplastic, it enters the food cycle of sea creatures causing harm to the marine biodiversity. Also, it releases toxic chemicals into the environment and can make their way into our food and water resources.
Last year, Sriring, O. (2018) published an article about a pilot whale that died due to 80 pieces of rubbish pieces found in its stomach has garnered global attention. This owes to the fact that there is plastic pollution in the ocean. According to the UN Environment Programme (2017), every year about 4.8 to 12.7 million tonnes of plastic are dumped in the ocean. Singapore contributes to plastic pollution in the ocean through its high usage of plastics in the country.  According to a study by Singapore Environment Council (2018), Singaporeans use at least 1.76 billion plastics such as bottles, bags and other disposable items yearly, in which only less than 20% are recycled. The remaining are discarded, burnt or to be transported to landfills.
This is an issue to a city like Singapore, as the majority of Singapore’s non-recyclable waste; plastic is incinerated and shipped to a man-made island nearby, called Semakau island. Geddie, J. (2018) reported that Semakau Island, Singapore’s only landfill, is expected to be filled up by 2035, 15 years from now. Originally, it was expected to last till 2045 however, due to the amount of waste generated that has increased over the years, the projected lifespan of the landfill was shortened.

This is crucial as Singapore faces land scarcity and is vulnerable to situations like this, thus we should play a part and contribute more to protect the environment. Initiatives must be taken to reduce plastic production and consumption in order to provide a better future for the next generation.

Many developed cities around the world had imposed certain types of disposable plastic ban. Singapore can similarly protect the environment by reducing unnecessary plastic consumption in the form of bottles and beverage packaging.

1.1 Current solutions in Singapore

Incineration was introduced in Singapore in the form of Waste-to-energy (WTE) plants. Currently, incineration helps prolong the lifespan of the landfill by reducing the amount of volume of waste. According to the Ministry of the Environment and Water Resources (MEWR), incineration of plastic can reduce the total volume from 100% to 10%. But it is not a viable long-term solution as the burning of plastic will release fumes that are hazardous to the environment. Without incineration of this non-biodegradable material, it would stay around for generations.

In 2007, the National Environment Agency (NEA) had started the Singapore Packing Agreement. In this voluntary agreement, NEA and operators worked together to reduce “packaging wastage” from innovative design, efficient manufacturing and encouraged “reuse or recycling of packaging materials”. According to NEA (2019), under the second SPA’s duration, businesses have reduced the total amount of 54,000 tonnes of packaging waste.

ZeroWaste SG (2018) has also published a guide to encourage food and beverage (F&B) operators to reduce plastic usage. In this guide, auditors issued a rating for popular F&B operators based on efforts in reducing plastic usage, persuade consumers to adopt a Bring Your Own (BYO) culture and suggest other things for them to contribute more. The results published in this guide show that the majority of F&B operators are open to the concept of a BYO culture.

The ideal situation would be for beverage shops under the Singapore Food Agency(SFA), should not use plastic cups for their drinks. The SFA should include regulations for the shops to omit plastic for their cups, straws, and carriers.

1.2 Problem statement

The amount of plastic waste contributed by beverages is high due to the extensive amount of usage of single-use plastics. This poses a threat to a rise in plastic pollution in the ocean which would, in turn, contribute to climate change.

1.3 Purpose statement

The purpose of this proposal is to suggest solutions to reduce plastic usage from beverage stalls in Singapore.

References:

Geddie, J. (2018, June 08) In Singapore, where trash becomes ash, plastics are still a problem.
Retrieved October 28, 2019, from

Lacy, P., Spindler, W., McAndrew, C. (2019, January 25) Plastic is a global problem. It’s also a global opportunity. World Economic Forum.
Retrieved October 28, 2019, from

Ministry of the Environment and Water Resources (MEWR). (n.d.). Incineration.
Retrieved October 28, 2019, from

National Environment Agency. (n.d.) Singapore Packaging Agreement.
Retrieved October 28, 2019, from

Singapore Environment Council. (2018, August). Consumer Plastic and Plastic Resource Ecosystem in Singapore.
Retrieved October 28, 2019, from

Sriring, O. (2018, June 3) Plastic bags jam stomach of dead pilot whale in Thailand.
Retrieved October 28, 2019, from

United Nations Environment Programme (2017, September). Towards a Pollution-Free Planet Background Report. United Nations Environment Programme, Nairobi, Kenya.
Retrieved October 28, 2019, from

ZeroWaste SG. (2018, October 22) Singapore’s First Guide For Rating F&B Retailers On Their Efforts To Reduce Plastic Disposables.
Retrieved October 28, 2019, from


Sunday, 13 October 2019

Draft #3; Summary Reader Response: New paths for the roads of tomorrow


In the blog post “New paths for the roads of tomorrow”, Decaux (2017) observed that developments in smart infrastructure can be applied to roads, which will further improve roads to be more “smart, connected and safer”. The author mentioned that roads are made of asphalt, which is a costly material and encourages the formation of "heat islands during heat waves in cities". In contrast, he stated that there had been developments to create greener materials which would improve the quality of roads. Such materials include "recycled plastic" that helps to make roads more resilient and cigarette butts which are mixed with asphalt that reduces the "heat island" formation. Decaux also found that installing solar panels on top of roads could harvest energy. He noted two applications of such energy: heating up roads during winter, and lighting up the roads in the night via motion sensors. He further mentioned that these applications of the generated energy will result in an improvement in road safety and energy conservation similar to how a “smart city” would be.

Within this blog post, the author had given examples of greener materials that can be used in replacement of asphalt in road-making. However, he did not provide other valid points to make a comprehensive comparison such as the advantages of using asphalt waste, the reduction of cost and emissions as a result of that usage and the limitations of using plastic as an alternative.

Firstly, most asphalt waste can be recycled and reused when making new roads. According to a publication by Harrington (2005), the majority of all asphalt is recycled back into “highway use”. From a research publication by Turner-Fairbank Highway Research Center (2008), the process begins when pavements have broken down and are “reprocessed” into the form known as “Reclaimed Asphalt Pavement (RAP)”. RAP is then added back into the mixture that makes roadway structures. This also has many benefits, such as improving the strength of new roads. In that same publication, Turner-Fairbank Highway Research Center (2008) states that when RAP is added to the foundation mixture, it makes the resulting roads stronger over a period of time.

Another benefit of recycling asphalt is that it is a penny-wise process. Adding recycled asphalt into mixtures reduces the amount of raw asphalt needed in new mixes. In a blog post, Patterson (2015) states that RAP reduces the tax from “American taxpayer by $1.8 billion per year”. Furthermore, as lesser raw asphalt would be required, this would also lessen the need for mining, manufacturing and transporting of raw asphalt which is known to be expensive tasks, with the added benefit of easing carbon emissions. In another blog post, Patterson (2015) states that recycled asphalt has “cost lower than traditional asphalt as processes are eliminated”. Also, he mentioned a notable decrease of “greenhouse gas emissions” due to avoidance of gas usage needed in obtaining raw asphalt.
As the author had highlighted, using plastic waste in road-making may sound like a good idea, but not all plastic waste can be utilized. As there are many forms of plastic, the melting point of each type of plastic differs. This is important to note as the integration of plastic waste to road-making mixtures requires the process of melting. According to Brandrup, Immergut, Grulke, Abe, & Bloch (2005), most plastics (polymers) melts at a temperature above 200 Degree Celsius. In comparison, this is higher than the heating of bitumen that is used in mixtures for road-making. According to Mishra (2018), Bitumen is heated to “150 – 177 Degree Celsius.” in the process of mixing. Another problem with using plastic wastes is that when heated to their respective melting point, most would produce toxic fumes. According to the UN Environment (2019), plastic incineration creates harmful fumes that are a hazard not just to human, but also plantations and wildlife.

To conclude, although Decaux mentioned the problems with using asphalt, there are still considerable benefits that asphalt and its recycled counterpart provides. Similarly, he has stated the possible use of plastic waste as a replacement material but in truth, plastic waste has limitations in usage. Thus, it would probably still take some time before greener materials, such as using plastic waste, are able to replace asphalt by a significant scale in the road-making world.


References:

Brandrup, J., Immergut, Edmund H., Grulke, Eric A., Abe, Akihiro & Bloch, Daniel R.. (2005). Polymer Handbook (4th Edition). John Wiley & Sons.

Decaux, J. C. (2017, October 23). Mobility & Trends; New paths for the roads of tomorrow. [Blog Post]
Retrieved from

Harrington, J. (2005). Recycled Roadways. (Publication Number: FHWA-HRT-05-003) U.S. Department of Transportation Federal Highway Administration.
Retrieved from

Joel. (2008, September 17). What is Asphalt Recycling? Pavement Recyclers. [Blog Post]
Retrieved from

Mishra, G. (2018, March 24). Steps in Bituminous Road Construction. The Constructor.
Retrieved from

Patterson, D. (2015, November 04). 5 Benefits of Recycled Asphalt Pavement. Basic Constriction.  [Blog Post]
Retrieved from

Patterson, D. (2015, November 30). Does Sustainable Asphalt Exist? Basic Constriction. [Blog Post]
Retrieved from

Turner-Fairbank Highway Research Center (2008). Reclaimed Asphalt Pavement.  User Guidelines for Waste and Byproduct Materials in Pavement Construction. (Publication Number: FHWA-RD-97-148) U.S. Department of Transportation Federal Highway Administration.
Retrieved from 

UN Environment. (2019, May 02). Plastic bag bans can help reduce toxic fumes.
Retrieved from

Sunday, 6 October 2019

Draft #2: Summary Reader Response: New paths for the roads of tomorrow


In the blog post “New paths for the roads of tomorrow”, Decaux (2017) observed that developments in smart infrastructure can be applied to roads, which will further improve roads to be more “smart, connected and safer”. The author mentioned that roads are made of asphalt, which is a costly material and encourages the formation of "heat islands during heat waves in cities". Additionally, he also stated that there had been developments to create greener materials which would improve the quality of roads. Such materials include: "recycled plastic" that helps to make roads more resilient and cigarette butts which are mixed with asphalt that reduces the "heat island" formation. Decaux also found that having solar panels on top of roads could harvest energy. He noted that usage of such energy generated could heat up roads during winter or lighting up the roads in the night via motion sensors, thus improving on road safety and conserving energy similar to how a “smart city” would be.

While there exist greener materials to be used in replacement of asphalt as the author had mentioned, it is not a comprehensive comparison. Comparing both materials, asphalt could still be the better material to use as it has benefits such as being recyclable and as such, reducing cost in the long term, while using plastic waste could be a liability as only certain types could be utilized.

Firstly, asphalt is one of the “most recycled material in the world”. According to a publication by Federal Highway Administration (2005), the majority of all asphalt is recycled back into “highway use”. From another publication by Federal Highway Administration (2008), the process begins when pavements have broken down and are “reprocessed” into the form known as “Reclaimed Asphalt Pavement (RAP)”. RAP is then added back into the mixture that makes roadway structures. This also has many benefits, such as improving the strength of new roads. In that same publication, the Federal Highway Administration (2008) states that when RAP is added to the foundation mixture, it makes the resulting roads stronger over a period of time.

Another benefit of recycling asphalt is that it is a penny-wise process. Adding recycled asphalt into mixtures reduces the amount of raw asphalt needed in new mixes. In the blog post, Patterson (2015) states that RAP reduces the tax from “American taxpayer by $1.8 billion per year”. Furthermore, as lesser raw asphalt would be required, this would also lessen the need for mining, manufacturing and transporting of raw asphalt which are known to be expensive tasks, with the added benefit of easing carbon emissions. In another blog post, Patterson (2015) states that recycled asphalt has “cost lower than traditional asphalt as processes are eliminated”. Also, he mentioned a notable decrease of “greenhouse gas emissions” due to avoidance of gas usage needed in obtaining raw asphalt.

It is true that using plastic waste in road-making helps reduce the total amount of plastic wastes, but only selected types of plastic could be used. As there are many forms of plastic, the melting point of each type of plastic differs. This is important to note as the integration of plastic waste to road-making mixtures requires the process of melting. According to Polymer Handbook (4th edition) (1999;2005), most plastic (polymers) melts at a temperature above 200 Degree Celsius. In comparison, this is higher than the heating of bitumen that is used in mixtures for road-making. According to Mishra (2018), Bitumen is heated to “150 – 177 Degree Celsius” in the process of mixing. Another contributing factor is that some plastics, when heated to its melting point, would produce toxic fumes. According to the UN Environment (2019), plastic incineration creates harmful fumes that are a hazard not just to human, but also plantations and wildlife.

In summary, using asphalt and its recycled counterpart has advantages that are comparable to adding plastic waste in road-making. Quoting Joel (2008), basically “Recycled asphalt provides a better product at a lower cost!”. On the other hand, plastic has issues with integration, which results in non-integrable plastics still being wasted. Thus, it would probably still take some time before greener materials, such as using plastic waste, are able to replace asphalt in the road-making world.


Original blog post:

Decaux, J. C. (2017, October 23). Mobility & Trends; New paths for the roads of tomorrow 
Retrieved from


References:

Brandrup, J. Immergut, Edmund H. Grulke, Eric A. Abe, Akihiro Bloch, Daniel R.. (1999; 2005). Polymer Handbook (4th Edition). John Wiley & Sons.

Mishra, G. (2018, March 24). Steps in Bituminous Road Construction. The Constructor.
Retrieved from

Harrington, J. (2005). Recycled Roadways. (Publication Number: FHWA-HRT-05-003) U.S. Department of Transportation Federal Highway Administration.
Retrieved from

Joel. (2008, September 17). What is Asphalt Recycling? Pavement Recyclers. [Blog Post]
Retrieved from

Patterson, D. (2015, November 04). 5 Benefits of Recycled Asphalt Pavement. Basic Constriction.  [Blog Post]
Retrieved from

Patterson, D. (2015, November 30). Does Sustainable Asphalt Exist? Basic Constriction. [Blog Post]
Retrieved from

Turner-Fairbank Highway Research Center (2008). Reclaimed Asphalt Pavement.  User Guidelines for Waste and Byproduct Materials in Pavement Construction. (Publication Number: FHWA-RD-97-148) U.S. Department of Transportation Federal Highway Administration.
Retrieved from 

UN Environment. (2019, May 02). Plastic bag bans can help reduce toxic fumes.
Retrieved from