These plastic-eating bacteria could help cut down on waste

Recycling is so 20th century. According to one new study, there could be a new way to cut down on plastic waste: bacteria that consume one of the major components of our old bottles and clothes.

The study, published Thursday in Science, focuses on a newly-discovered bacterium called Ideonella sakaiensis. It was found outside of a bottle recycling plant, and it seems to have evolved a pair of enzymes it uses to break down polyethylene terephthalate or PET, a polymer so widely used to make plastic that about 50 million tons of it are made every year.

Because 311 million tons of plastics are produced worldwide each year — and very little of that amount makes it to recycling plants — scientists are always on the lookout for new, better ways of making PET break down when it inevitably ends up in landfills, but it’s tough stuff.

Digital advertisers on the alive2green platform also receive exposure on the Green Economy Online newsletter and on the sustainability week platforms – click here for more…

“You may think this is the rerun of an old story, as plastic-eating microbes have already been touted as saviors of the planet,” the University of Hull’s Mark Lorch, who wasn’t involved in the study, wrote for The Conversation. “But there are several important differences here. First, previous reports were of tricky-to-cultivate fungi, where in this case the microbe is easily grown. The researchers more or less left the PET in a warm jar with the bacterial culture and some other nutrients, and a few weeks later all the plastic was gone.”

The impressive results don’t mean that we can start tossing plastic bottles into landfills all willy-nilly: It’s going to take some more work before the bacteria are ready to tackle our messes. For now, they still have a hard time breaking down the highly crystallized form of PET used in most hard plastics.

“It’s difficult to break down highly crystallized PET,” study author Kenji Miyamoto of Keio University told The Guardian. “Our research results are just the initiation for the application. We have to work on so many issues needed for various applications. It takes a long time.”

And there are other potential hiccups: If plastics were broken down using bacterial processes, they might release unsavory molecules and compounds into the environment that would otherwise stay locked up.

But even if there’s no direct use for Ideonella sakaiensis in our environment, the bacteria’s mechanism for consuming PET could be used to develop synthetic plastic-chompers in the lab. And the bacteria’s existence is a great sign: PET has only been around for about 70 years, and this indicates that at least one organism has already evolved the ability to consume it. It’s likely that there are other microbes out there doing the same thing for PET and other kinds of plastics — and one of those species could wind up revolutionizing the way we recycle.

Expose your company to in excess of 3000 B2B delegates

Make sure you get the best SA and international green economy stories delivered to you, as frequently as you like.

Here’s how to reach more than 20,000 subscribers that are interested in green economy content

The best way to gather hundreds of qualified leads

Source: washingtonpost

Follow Alive2Green on Social Media
TwitterFacebookLinkedInGoogle +

Waste not, want not

As the expression goes, “waste not, want not. By using resources sparsely and knowing what can be recycled, we can all contribute to a cleaner and healthier environment.

JOHANNESBURG SOUTH – The Institute of Waste Management of Southern Africa (IWMSA) gives helpful tips and insight on what should be left out of the dustbin.

“There are various waste streams and most of them are appropriate for recycling. By seeing waste as a resource, we can help protect virgin materials and aim to create a circular economy where very little waste is generated,” says Prof Suzan Oelofse, President of the IWMSA.

Demonstrate and sell product over three busy days

A nifty website for all those interested in being environmentally friendly is MyWaste. Founder of MyWaste, Mark Gibson elaborates, “It all comes down to knowing the different waste materials and what should be done with it. The website enables residents to select the waste they want to recycle. ”We then provide them with a list of their nearest recyclers and buy-back centres in their area.”

Oelofse and Gibson explore the most common waste streams below and the best course of action to keep it out of landfill sites:


“Car batteries are recyclable. Alkaline batteries are not often recycled and should be disposed of as a hazardous material. The best option would be to switch to rechargeable nickel-cadmium batteries, which are widely recycled after their lifespan,” guides Gibson.


Oelofse states that nearly all cans and tins can be recycled. “These include: food cans, aluminium cans, paint tins, steel beverage cans, oil cans and aerosol cans. Just make sure that it is clean!”

Electronic waste (E-waste)

E-waste is anything that operates from a power source (electricity or batteries) and includes computers, phones, household appliances and light bulbs, to name a few. “E-waste contains hazardous materials such as mercury and should not be disposed of at landfill. A lot of supermarkets collect e-waste for recycling, such as old bulbs and batteries,” mentions Gibson.

Food waste

Another common waste stream in the dustbin – food waste. Old scraps of food and even garden waste can easily be composted at home.


“Most glass containers can be recycled, no matter the colour. Glass bottles do not need to be separated by colour, however it is advisable that the lids are removed,” advises Oelofse. Glass and break-ware items that can’t be recycled include: computer and television screens, light bulbs, car head lights, laboratory glass, windscreens, window glass, crystal and opaque drinking glass, mirrors, heat-resistant ovenware, ceramics and clay pots.


All used oil can be recycled and includes hydraulic oil, gear oil and engine oil.


Paper is another widely accepted waste stream for recycling and includes: newspapers, magazines, office paper, cardboard boxes and pamphlets.


Many plastic materials can be recycled. Gibson advises that bottle caps and lids are removed from plastic packaging. “The recyclability of this waste stream depends on the equipment of recyclers and what the lid is made of.”

Expose your company to in excess of 3000 B2B delegates

Make sure you get the best SA and international green economy stories delivered to you, as frequently as you like.

Here’s how to reach more than 20,000 subscribers that are interested in green economy content

The best way to gather hundreds of qualified leads

Source: southerncourier

Follow Alive2Green on Social Media
TwitterFacebookLinkedInGoogle +

Plastics industry propelled by recycling versatility

The inherent versatility of plastics recycling, including the industry’s ability to recycle most grades and compositions of plastics, contributes strongly to plastics and synthetic fibres’ strong market acceptance, sustainable use and ecofriendliness, says Cape Town-based plastics recycler the Polyolefin Recycling Company (Polyco). Founded in 2011, Polyco promotes the recycling of polyolefin plastics and the countrywide diversion of plastics from landfills. It is joined in this collective plastics recycling effort by Petco, the Southern African Vinyls Association (Sava) and the Polystyrene Packaging Council of South Africa. Print Send to Friend 0 0 According to statistics released by Plastics SA in October, 1.4-million tons of domestic and imported plastics was converted in South Africa in 2014, diverting 315 600 t from landfill sites, which is an increase of 9% from the volume diverted in 2013. Of that, 285 000 t was mechanically recycled and converted into an array of products, ranging from plastic pipes and furniture to shopping bags and paint buckets. Further, statistics from research organisation BMi Research South Africa reveal that 754 430 t of plastic packaging entered the waste stream in 2014 and that 247 959 t was diverted from landfill – a 12.5% increase from 2013.

Polyco CEO Mandy Naude says each one of the associations involved in plastics recycling operates as the ‘conscience’ of the plastics industry, encouraging membership buy-in from plastics manufacturers and spending the membership funds on worthy recycling initiatives. “In the polyolefin niche, we work closely with sister organisations Packaging SA, Plastics SA and the South African Plastics Recycling Organisation,” she adds. Naude notes that polyolefins make up about 70% of plastic packaging in South Africa, adding that they are the main component of tough and sturdy packaging, such as ice cream tubs and milk bottles, and are 100% recyclable.

Polyco operates on a self-sustaining business model, based on the principle of “hand up” rather than “handout”, whereby funds are invested in collection and recycling projects as one-off grants, or interest-free loans repayable within three years. Recently, the organisation awarded R4.6-million in funding to 12 postconsumer polyolefin products collectors. To date, more than R17-million has been pumped into projects throughout South Africa. “By 2020, we expect that R25-million of the projected total R43-million project spend will be repaid loans,” she says. Polyco’s goal is to increase polyolefin recycling in South Africa by 300 000 t over the next five years. “We need to achieve a growth of 275 000 t over the next 15 years, which is ambitious, given that the recycling rate in 2014 was 171 000 t,” notes Naude. Industry Potential Naude describes plastics recycling in South Africa as a vibrant and growing industry. Plastics SA states that formal employment in the sector grew by 34% in 2014 to more than 60 000 workers, with informal employment topping 47 000 personnel.

The number of jobs sustained through plastics recycling has increased year-on-year by 11.4% to around 53 500. However, Naude says more people are needed to assist plastics recycling companies to collect, sort and recycle. Consumer education is also a significant facet of Polyco’s mission. “We constantly communicate the wisdom of recycling and have harnessed the power of social media, like YouTube, to reach the largely untapped youth market,” she says. However, Naude notes that the plastics recycling industry requires government assistance to ensure that infrastructure is in place. “In our experience, many more citizens would become recyclers if they had adequate facilities in their communities,” she says. Early in 2016, Polyco will launch a packaging clean-up team, involving schools and local communities, to raise awareness about the need to clean up and recycle in their own areas.

Naude notes that much needs to be done to bring into the recycling fold those in the packaging industry who do not adhere to the ‘producer pays’ principle and who do not belong to an organisation such as Polyco. She warns that, unless the packaging industry demonstrates that it is acting responsibly in terms of the recycling of its products, government will intervene, which is “bound to be unfavourable for the industry”. She notes that the plastics recycling sector will welcome government making it mandatory for packaging converters to belong to a recycling organisation and for packaging importers to pay a recycling levy to these organisations. “We would also like to see separation-at- source implemented by every municipality in the country to ensure that valuable waste does not end up in landfills,” says Naude, adding that appropriate infra- structure and a change in consumer mindset will take recycling in South Africa closer to the levels it needs to achieve. “Currently, only 10% of South Africans recycle their household waste.

We need to reach the other 90% with the message that recycling is easy and fun,” she concludes.

Source: engineeringnews

Follow Alive2Green on Social Media
TwitterFacebookLinkedInGoogle +

Investment in long-term approach towards waste management key to success

Plastics are one of the most used materials in today’s world because of its various properties, ranging from cost saving and light weighting to durability and longevity.

However, as we are using more plastic products, we are also creating more plastic waste. In keeping with international trends and the local legislative framework, the South African plastics industry has committed to the vision ‘Zero plastics to landfill by 2030’. In my opinion a somewhat ambitious target, but surely one that will call the industry to definitive action.

According to data from Plastics|SA, only 20%, or 280,000 tons, of all plastics manufactured in South Africa were recycled in 2013, which shows an increase of 4,1% from 2012. Of the 280,000 tons, 220,400 tons (79%) were plastics packaging products.

One of the reasons Plastics|SA states for the slow increase in the recycling rate, specifically for plastic packaging, is the economic down-turn during 2013 that had a direct impact on the quality and quantity of plastic packaging available for recycling. On the one hand the consumer purchased less, thus less packaging, and on the other hand the exchange rate favoured the export of recyclables.

Regulatory framework

However, it is not only the target of sending ‘Zero plastics to landfill by 2030’ that is driving change and the way in which we as producers view our responsibility towards an increase in plastics waste. In South Africa we have a progressive environmental regulatory framework. The right to an environment that is not harmful to one’s health or well-being is entrenched as a fundamental right in the Constitution of South Africa.

Understanding and navigating legislation can be somewhat daunting, but with reference to waste management and the impact of various pieces of legislation on our industry, we should understand the basic principles of the following Acts and Strategies:


  • National Environmental Management: Waste Act (59/2008)
  • National Environmental Management: Waste Amendment Act (26/2014)
  • National Waste Management Strategy (NWMS)
  • National Pricing Strategy for Waste Management (NPSWM)

The promulgation of the National Environmental Management: Waste Act (59/2008), has placed great emphasis on recycling and the reduction of materials to landfill. It allows for the use of economic instruments applied to specific waste streams to serve as an incentive or disincentive to ultimately increase the diversion of material from landfill.

Six years after the Waste Act was promulgated, we saw the National Environmental Management: Waste Amendment Act (26/2014) from which the National Pricing Strategy for Waste Management (NPSWM) is a direct consequence. The Waste Act, as amended, provides for the determination of waste management charges and its review, as well as for the collection of these charges through the national fiscal system.

It also makes provision for the establishment of a Waste Management Bureau within the structures of the Department of Environmental Affairs (DEA). The main purpose of the Waste Management Bureau will be to process, monitor and evaluate any Industry Waste Management Plan (IndWMP) submitted to the DEA. All of these aspects are prescribed in the NPSWM.

Time to get serious

It is time that we get serious about the impact that the Waste Act could have on our industry. We know that we need to increase recycling rates of our various waste streams – from rigid to flexible. But do we know what will happen if we don’t?

The Waste Act introduces us to additional principles such as the life-cycle approach to waste management, extended producer responsibility (EPR), the precautionary principle and the polluter pays principle.

Within the framework of EPR, we as an industry remain financially or physically responsible for a product to its post-consumer stage. According to the Waste Act, this responsibility could include the implementation of waste minimisation practices, the funding of campaigns to increase the reduction, re-use, recycling and recovery of waste, conducting awareness programmes to inform the public of the impacts of waste emanating from the product on health and the environment.

However, should the Minister of Environmental Affairs believe that a specific waste stream either poses a threat to health or the environment, either due to the quantity or composition of this waste stream, and that current measures are insufficient in dealing with this waste stream, the Minister may declare such a waste a priority waste.

Detailed analysis

Section 28 of the Waste Act allows for the Minister to require a specific industry to submit an IndWMP or any industry may elect to voluntarily submit an IndWMP to the Minister for approval. Typically an IndWMP will provide the Minister with a detailed status quo analysis of the current waste management system, set realistic targets for waste minimisation within a particular industry, outline milestone indicators with achievable time-frames for different interventions and provide for sound record-keeping systems.

The National Waste Management Strategy (NWMS) is a legislative requirement of the Waste Act set out to achieve the objects of the Act. According to Michael Goldblatt one of the challenges facing waste management in South Africa is a policy or regulatory environment that does not actively promote the waste management hierarchy.

This has limited economic potential of the waste management sector, which has an estimated turn-over of approximately R10bn per annum. Both the private and public sector believes that waste collection and the recycling industry make meaningful contributions to job creation and the GDP, and will continue to do so with the right combination of industry support and legislative drivers.

To this effect government is proposing an approach that will optimally combine regulation and compliance measures with self-regulatory components, voluntary initiatives, economic incentives and fiscal mechanisms. The approach establishes baseline regulations for the waste sector as a foundation for a co-regulatory system that relies on industry initiative and voluntary compliance.

In cases where industry response proves insufficient for dealing with waste challenges or where market failure prevails, more interventionist regulatory tools may be deployed, i.e. a mandatory EPR scheme where IndWMP have been ineffective.

Purpose of NPSWM

The National Pricing Strategy for Waste Management (NPSWM) is a legislative requirement of the Waste Act and gives effect to the NWMS. It contains guiding methodologies for the setting of waste management charges, the implementation of IndWMP and the operations of the Waste Management Bureau.

The selection and use of economic instruments, as outlined in the strategy, is strongly grounded in the polluter pays principle whereby all generators of waste (including businesses and households) are responsible for the costs of managing wastes generated.

The NPSWM is furthermore based on the principles of environmentally related taxation as per Chapter 2 of the National Treasure Framework for considering market-based instruments to support environmental fiscal reform in South Africa.

One of the aspects addressed in the NPSWM is that of EPR schemes. It is suggested that amongst other advantages, these EPR schemes could be used to relieve municipalities of some of the financial burden of management, promote ‘design for recycling’ initiatives and encourage the use of more recycled content in production processes.

In essence, EPR shifts the responsibility for waste management away from government to industry and these schemes are typically funded through the implementation of various economic instruments, levied either directly by the obligated industry (e.g. product charges, advanced recycling fees, deposit refund schemes, EPR fees), or by government (e.g. through material, input or product taxes).

Evaluation criteria

It is the Minister’s prerogative to declare the application of EPR to a product, group of products or waste stream and the evaluation criteria proposed to identify possible candidates for EPR schemes include:


  • Risk of harm – Products with toxic constituents that may become a problem at the end of life.
  • Large products – that are not easily and conveniently thrown out as waste.
  • Complex products – Products with multiple material types that make them difficult to recover in traditional recycling systems.
  • Voluntary measures insufficient – where participation rates or waste diversion from landfill remain low for voluntary EPR schemes already in existence.
  • Current waste stream recycling/recovery low – where the diversion of specific waste streams from landfill is low, as benchmarked against developing and developed countries (e.g. % recycling).

It is important to note that if a waste stream has not been prioritised by the Minister and a voluntary EPR schemes are already in operation, the suggested course of action would be for that voluntary systems to continue operating to ensure minimal disruption to current waste management activities. These voluntary EPR schemes may however be ‘influenced’ by DEA through the approval and implementation of the relevant IndWMPs (e.g. requiring greater support of EPR schemes to municipalities, setting of recycling targets, monitoring and evaluation by government, etc.).

Free riders

But as in any industry and with any voluntary programme, there is always the question of dealing with ‘free riders’ or companies that either refuse or fail to participate. In a recent meeting with DEA, this question was posed in relation to the pricing strategy and DEA responded: “There is a proposed additional tax that will be imposed on free riders. DEA will make it compulsory that companies need to be part of an Industry Waste Management Plan and anyone not forming part of the plan will be subjected to higher tax levels. Engagement with SARS in relation to free riders will still take place.”

When we debate sustainability in the business environment we could easily divide companies into three basic categories, namely: those who only recently embarked on the journey towards greater sustainability, those who are happily using the hype around environmental sustainability as an opportunity to ‘green wash’ their products and brands and those who have gone through great lengths (and costs) to implement the principles of sustainability at every level of their businesses.

I am of the opinion that the majority of companies operating within the PVC industry in South Africa, and globally, fall into the latter group. This is certainly true for members of SAVA who voluntarily signed a Product Stewardship Programme (PSP) in 2011 and continue to work towards achieving its robust targets and deadlines!

DEA indicated in an Industry Waste Management Forum held on 13 February 2015 that they working on a Section 28 Notice to invite industries to submit IndWMPs and that they are engaging on an ongoing basis with sectors and industries that have already voluntarily submitted their IndWMPs. It is foreseen that the Section 28 Notice will be published before the end of this financial year, to also allow a 30 day commenting period, after which the process on calling for the submission of IndWMP will be finalised.

Costs of failure

The outlined legislation either holds an opportunity for the local PVC industry to pro-actively submit and bring into effect its IndWMP, or it holds a risk should the industry decide to adopt a wait-and-see approach. When it comes to legislation and regulations, companies tend to underestimate the cost of non-compliance, which, within the framework of the NPSWM, could be dealt with by the implementation of a government managed tax similar to the plastic bag levy of which we are all too familiar with. Product manufacturers need to understand the true costs of failure, assess the business implications, and adopt long-term strategies to avoid these costs.

To this effect, SAVA is in the process of conducting an extensive recycling survey that will ultimately feed into an IndWMP that we as an industry will voluntarily submit to DEA, in response to the Waste Act and EPR and give effect to in the near future.

In summary SAVA believes that the key to succeeding and avoiding costs in our current regulatory environment is to take a proactive approach and for our industry to invest in a long-term approach towards waste management. The long-term costs of being unprepared are simply too high.

Source: Bizcommunity