By Harbinder Singh

Harbinder-SinghEvery day we hear stories about the impact of the 4th industrial revolution, new technology, disruptive innovation and circular economy in our lives. Waste management and recycling has traditionally been a “static” industry, as changes were usually small and incremental. However, this pace of change is likely to accelerate, and we should be ready to recognise, and be prepared for technology trends that will change waste generation rates, location and processing methodologies. Below are some possibilities to consider.

Decentralisation of waste generation and closing the loop

Technology innovations such as e-commerce websites, GPS tracking and WhatsApp have made shopping at home easier. We order online, and items are delivered in the comfort of our homes at a time of our convenience. Because of the nature of delivery, packaging material tends to be more for online shopping compared to the traditional brick and mortar shop purchases. The same goes for online food delivery. In a restaurant, one gets food served in reusable crockery, but with on line delivery, food is delivered in plastic containers, together with plastic cutlery. As a result, both residential waste generation rates and waste composition types are likely to change. Simultaneously, we have the advent of 3D printing. As 3D printer’s prices drop and technology becomes simplified, we are likely see the massive proliferation of these devices in homes. They could become a common standard in homes like a TV or fridge. What is the link between 3D printing and e-commerce? Closed loop. Closed loop is the foundation of circular economy, whereby a waste output from one process becomes the recycling input of another process.

3D printers used to require virgin material as inputs. However, 3D printers, using either recycled input material, or incorporating an ability to incorporate a mini recycling system, are being developed and tested. Once they are effectively commercialized, users could use a variety of inputs, for
example packaging waste, for these 3D printers to make what products they want. As a result, we could see the decentralisation of waste generation and reduction/elimination of waste streams from these decentralised locations.

Elimination of some waste streams and creation of new closed loop waste streams

Many day to day financial transactions generate quite a bit of paper. Examples include ATM transactions, credit card till transactions, shopping and dining invoices etc. These tend to be small in size, in odd shapes and generally do not get sent for recycling. Contactless payment, blue tooth technology, email account linkages and SMS notifications, are in their own way reducing these waste streams. Major banks, for example, enable one to receive an email receipt for transactions as an alternative for traditional printed receipts, and many firms are recognising an e-receipt as being like a paper receipt for accounting and documentation purposes. As a result, as we adopt a “paperless” system, it is a matter of time before this particular paper waste stream is eliminated. At the same time, increased use of technology is going to create new waste streams. An example is electronic scrap (e-scrap). Like plastics which started at the periphery of usage, and then became main stream, e-scrap will follow the same trajectory. Interestingly though, the question is whether this new e-scrap stream will really be waste? The level of toxicity in materials used in electronics is reducing, and producers making conscious efforts to ensure electronic products can be recycled effectively and efficiently, through product design and applications of latest material science technologies. E-scrap companies may transform from an industrial classification of recycling to one of urban mining.

Traditional mining, for example rare earths, gold and copper ores, has its associated environmental and social issues. An urban mining e-scrap facility does not – provided it uses the correct technology to process. 99% of the materials recovered from electronic scrap has a use in some other industries ranging from rare earths to precious metals to non-ferrous to plastics to glass, etc, and therefore can provide similar substitutes for raw materials usually provided by traditional mines. E-scrap will, therefore, soon be an example of a “closed loop waste stream”. Battery recycling is also another example of a creation of a new closed loop waste stream.

AI, Robotics and the possible end of the traditional waste to energy plants

We now see robotics being developed and used in multiple applications such as recycling lines, home cleaning and street cleaning. Add in the artificial intelligence and machine learning element, and these robots will be soon able to do source segregation as they pick up the material. If this happens, instead of going for final disposal, these materials could be sent to recycling facilities for conversion into other products. This would reduce the input feedstock for traditional waste to energy (WTE) plants such as incineration, multi-fuel, refuse derived fuel, etc. The attraction of these WTE facilities is they combine the twin objectives of ensuring waste is disposed properly and generating power from waste received. The financial viability of these WTE plants is dependent on the tipping/gate fee for waste disposed and the sale price of output power.

This is especially important as WTE projects have 20 to 25-year project financing. In theory, the reduction in tipping fee volumes could be offset against a higher power output sale price. But, this is where another technological innovation comes in – renewable energy. Prices of renewable energy have dropped dramatically over the years, and today, they are substantially lower than traditional fossil fuel/WTE utility power generation costs. However, the challenge for renewable energy has been storage, and with it, reliability and consistency of power generation.

In a WTE plant, the waste bunker becomes the “input fuel storage” area, enabling it to generate power as and when required. Renewable energy, such as solar panels, didn’t have that advantage. Until now. Technology has made large battery power storage farms a reality, and thereby eliminated the last major competitive advantage that WTE/fossil fuel plants had. As a result, over the next few years, WTE will suffer a double whammy of reduced incoming tipping fee revenue, and reduced output power sale revenue – impacting the long term financial viability of these traditional WTE plants.

Will the above trends really happen?

It is already happening. High tech organic composters are an example of decentralised waste generation and closing the loop. Residents put their excess waste into these machines and compost is generated in a short period of time. As the price of these high-tech composters fall, their market adoption rate will increase among households. In addition, some developers who market their projects as being green provide these high-tech composters as standard in new houses. Traditional print photos have now disappeared with the advent of digital photos. Stationery waste in schools has reduced dramatically with the heavy adoption of IT/laptop/iPad by students as part of the curriculum. The above are examples of waste streams being eliminated.

Artificial intelligence is being used for predictive analysis of waste generation and composition breakdown by equipment suppliers to build facilities of the future, and by urban planners to plan cities of the future. Thanks to the advent of awareness/knowledge drivers such social media and search engines, adoption rates of new technologies, as mentioned above, will increase, and at a faster pace than ever before. Are we in the industry prepared for this future scenario? I hope so. Those businesses that do not prepare for this change, run the risk of being eliminated – just like one of the waste streams mentioned above.

The author is a Singaporean with over 20 years international environmental experience in developed and developing countries. He has grown multi-million USD businesses in 6 different countries and has served in senior management roles for mainboard listed companies, privately held conglomerates and state-owned enterprises. Besides waste management, Harbinder’s other interests are technology and consumer engagement. He is an investor and board member of three technology start-ups. He has an LLB (Hons) from the University of Manchester, UK and an MBA from the University of Chicago, US. He can be contacted at