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 4:45 PM

COVID-19 and Hungary’s steep slide towards Authoritarianism

The Hungarian Prime Minister, Viktor Orban, has used the pandemic of coronavirus to turn Hungary into an authoritarian system. This undermines the fundamental principles of democracy and rule of law in a way that is hard to reconcile as necessary for public health. On 30th March 2020, the Hungarian government passed a bill in the parliament which approved granting his government emergency powers.

Critics have said that the emergency of the coronavirus pandemic has turned Hungarian democracy into a dictatorship. This bill, which turned into a law, diminishes the Parliament’s check on the executive power. This means that elections and referendums will be delayed indefinitely.

Political commentator Zoltan Cegledi told BIRN, “Hungary’s already run as an illiberal democracy, the government’s will to destroy, limit and exhaust democracy is permanent. Its future victims will be the remnants of autonomy. Even before the pandemic threat, they [the government] tried to besiege cultural institutions and representatives while attacking judicial independence.”

The legislation under the law also allows up to five years of imprisonment for anyone who publishes false or misleading information that alarm or agitate the public or undermine the government’s “successful protection”. This also means that it is easy for the executive powers to jail the journalists for doing their job. Political Capital Institute, a Budapest-based think tank also wrote “The remaining checks and balances in Hungary will cease to exist and the country will likely witness a new wave of attacks against the free press,” while analysing the bill.

Crucially, the Bill on Protection Against Coronavirus, now a law, does not have any sunset clause. This means the law allows the government to decide when (or if) to end the state of emergency. Hungary’s democratic opposition said that even though they had concerns over a number of elements in the bill, they were willing to overlook it in the emergency situation as long as the sunset clause was introduced. However, the ruling party had made it clear that it was not willing to back down over the sunset clause.

Lydia Gall, a senior researcher at the Human Rights Watch said that Orban had already “weaponized coronavirus to stoke xenophobia” after claiming that coronavirus was imported to Hungary by Iranian students.

The question now arises is why Orban is doing this? There are two reasons. One, this labels the opposition as the “supporters of the coronavirus”, instead of supporters of the people, which will win his government the political debate in advance. Two, Orban sees this as the perfect time for a power grab. Every country is dealing with how to save the lives of its citizens and avoid a total economic collapse- this makes the country more inward-looking, which means that the foreign policy, in general, becomes less important and human rights and the rule of law in other countries become issues of less importance for most politicians and citizens, even though that should not be the case. When there is a death threat, the citizens of a country have a more narrow view. This is how Orban’s strategy of a power grab would work perfectly in the time of an emergency like a pandemic. Rights groups and government critics have said that while it is clear that coronavirus brings extraordinary challenges, there need to be checks and balances in place for the government, especially given Orban trying to challenge the democracy of Hungary since the past ten years since he has been in power.

Orban is not alone in seeing the pandemic as an opportunity to invoke emergency powers and turn a democratic state into an authoritarian one. But this enabling act represents his latest step along the autocratic path he embarked on a decade ago.

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