Friday, July 10, 2020

Plant- Microbial fuel cell: Generating electricity from green, living plants

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Charvi Trivedi

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Plant- Microbial fuel cell: Generating electricity from green, living plants

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Global Views 360

Publication Date

July 10, 2020

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Marshland near Blythburgh. View over the tidal River Blyth

Marshland near Blythburgh. View over the tidal River Blyth  | Source:  Eileen Henderson via Wikimedia

Humans are capable of discovering and creating great things with the help of science and one such impressive discovery is that green, living plants can generate electricity. It may seem unbelievable, but not impossible.

One must be wondering how this technology works. Well, the answer is quite simple; photosynthesis. Plants excrete organic matter into the soil as a result of photosynthesis. Only some of the organic matter is used by plants and the rest is released in the soil. This released organic matter is broken down by bacteria. In the breakdown process, electrons are released as a waste product. Since the movement of electrons produces electricity, these electrons, which are of no use to the plant, can be harvested. The best part about this innovation is that the plants from which energy is being generated are not affected in any way.

This idea was first put into use by a Dutch start-up called Plant-e. This company was launched in September 2009 and is successful in launching and selling many environment- friendly products like DIY kits to the public for experimentation purposes and modular systems which could be easily installed on green roofs for abundant electricity production. Plant-e is involved in various projects, within The Netherlands, like automatic lighting systems in gardens and many more.

This technology works with the plants which thrive in moist soils and where the water is present in abundance. Therefore marshlands, paddy fields and deltas are some of the most suitable places for setting up plant batteries as a huge amount of water is present in those areas. Hence, the use of this technology is limited to certain geographic areas containing moist soils and cannot be used in arid regions. It may, however, promote the growth of more trees and plants which will gradually reverse the malicious effects of global warming.

Another obstacle in widespread adoption of this technology in today’s time is the high cost of installation of the system. The initial adopters of this technology are those who are attracted by the efficiency and eco-friendly nature of the plant batteries and willing to pay a premium for it.

The concept of plant batteries can be further taken into rural areas where most of the population still does not have access to adequate electricity. It is estimated that plant-MFC technology can cover upto 20% of European Union’s primary future electricity needs. Also, plants are almost 100% efficient at converting photons from sunlight into electrons which indicates a bright future for this technology. However, more research needs to be done in this field.

Another innovation in the field of green electricity is using algae , which often grows in ponds and rivers, for generating electricity. The basic concept which explains the working is similar to the way plants are able to produce electricity; photosynthesis.

Various other ventures in the field of renewable energy also include vegetable batteries, meaning, electric power generated from fruits and vegetables like lemons, tomatoes and potatoes, have been investigated. According to experiments, at least 3 to 4 vegetables are required just to light a small LED bulb. Moreover, it leads to poisoning of the vegetables and those food products need to be thrown away, without being useful for consumption purposes. It is therefore not a viable option for energy production.

Plant based electricity generation is still an evolving technology which has immense potential for producing energy in an environmentally sustainable way. It will realise full potential when the installation cost is attractive enough for the farmers to prefer it over the electricity grids or fossil fuel based personal electricity generator sets.

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February 4, 2021 5:04 PM

Forced Uyghur labour in China: Getting the World attention now

Since 2017 nearly a million ethnic minorities, mostly Uyghur Muslims from the far Western region of the Xinjiang province of China, have been put in  detention centres. The detainees in these camps are forced to renounce their faith and, in some instances, have been subjected to torture.

The Chinese government has termed the program as a combat against “religious extremism” even as it detains members of ethnic minorities from the region and sends them to the so-called “re-education camps”. The experts however believe that these people have been thrust into a systematic program of cultural genocide.

This campaign now appears to be proceeding towards a new direction wherein the Uyghur detainees are being shipped across the country for forced labour in factories.

As per the government officials, these “trainees” have all “graduated” and are being given employment in the form of factory labour to lead a better life. While China has made this their sole criteria to defend the program, there is mounting evidence that suggests that the Uyghurs are being subjected to forced labour and are not allowed to visit their families in Xinjiang.

According to a report by the Australian Strategic Policy Institute, the Uyghurs have been moved under a labour scheme known as Xinjiang aid to factories across the country straight from the detention centers. Many of these factories are a part of the supply chain network for well-renowned brands such as Apple, Nike, and Dell.

At the factories the workers are forced to live in separate rooms and are required to take Mandarin lessons under heavy surveillance. They are not allowed to leave their jobs and go back to their families in Xinjiang either.

John Oliver, host of popular US TV show “Last Week Tonight” recently aired an episode wherein he talked about the Uyghurs. “If this is the first time that you’re hearing about an estimated million people who’ve been held in detention camps – mostly Uighurs but also Kazakhs and other ethnic minorities – you are not alone. And it’s probably because China has done its level best to keep this story from getting out,” says Oliver.

John Oliver further said, “While there is clearly nothing new about horrific practices being hidden deep within the supply chain of global capitalism, what is happening to the Uighurs is particularly appalling”.

Despite China’s attempts at keeping the entire crackdown private, more and more horrifying details have come out in the open about the atrocities meted out to the Uyghurs via testimonies from former detainees.

This has led to an increased pressure on China as well as the big brands utilizing the Chinese supply chain network, to cut ties with factories where human rights are being violated under this Uyghur crackdown.

The US has restricted 11 Chinese companies from buying American goods due to claims of them being linked to the Xinjiang region. A coalition of over 180 organizations also called out dozens of clothing brands and retailers for links to the Xinjiang crackdown and forced Uyghur labour.

While some companies like PVH, the owner of brands like Calvin Klein and Tommy Hilfiger are working on reducing their presence in the Xinjiang region’s supply chain network others like Big W, a discount department store chain operated by Australia's Woolworths group acknowledged that some of their products might be unintentionally coming from the regions of Xinjiang province.

Companies like Nike, Puma, and Adidas have however continued to deny allegations of links to factories with forced Uyghur labour completely. In their statement Nike said, "We have confirmed with our contract suppliers that they are not using textiles or spun yarn from the region."

With the increasing spotlight on the Chinese government’s repressive activities,  international pressure is increasing on the business groups which depend on China for supply change, to come clean on any link of their vendors with Uyghur forced labour. There might be some hope, even if very little, for the plight of the Chinese Uyghurs after all.

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