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 4:55 PM

Suppressing the Minority Voting: An effective discrimination tactic of the US Conservatives

The recent protests over George Floyd’s death and reactions of the conservatives against the protest laid bare the systemic injustice and oppression faced by the people of color in the USA.

The other, albeit invisible form of discrimination perpetuated by the conservative political establishment in the USA is “Minority Voter Suppression”.

Though it may seem improbable that long after the Jim Crow laws are junked and Civil Right Laws are in place, the effort to disenfranchise the Black people is still going on.

The major piece of legislation which protected minorities from electoral exploitation was the Voter Registration Act which underpins the basic ideal of a universal adult franchise by specifically addressing and combating voting discrimination.

To ensure the representation to minority communities, this act mandated that “At-Large Elections”, where the whole of the jurisdiction elects all of the city council, were replaced by the single member districts in which each community selects a person to represent them in the city council.

It was also prohibited to draw the voting district in such a way that  minorities could be clubbed in only a few of the districts. It was also made mandatory for those states which have a history of discrimination to get pre-clearance from the justice department before changing their voting laws.

This law, however, lost its power in a process which began in 1980. In 1980 the Supreme Court ruled that at-large elections were not unconstitutional, on their own. In 1995, the Court began restricting the construction of majority minority districts on grounds that it segregates people on the basis of race.

In 2008, the court ruled that a photo voter ID law in Indiana was constitutional and was in state interest to protect against voter fraud (research shows that photo voter IDs provide disincentive to vote for people of color). The voter ID law requires the voters to have a government-issued photo ID to cast a ballot.

In 2013, the Supreme Court scrapped the part of the law which stated that some states (which had an alleged history of discrimination) needed federal preclearance in any changes of their voting laws, meaning that the state laws would need approval from the federal government before being put into practice. This was done so citing that the methods which determined discriminatory states were invalid.

All of these slowly chipped away at the laws, and especially the 2013 Shelby County vs Holder case which led to a host of issues whVoter Suppression is Still One of the Greatest Obstacles to a More Just Americaich directly/indirectly keep a significant proportion of minorities from voting. Few of such actions are closure or relocation of precincts in majority black areas, purge of minority voters from the voter lists, and elimination of Sunday early voting days which are preferred by black voters.

There have been attempts to restrict registration drives in Tennessee on the basis that many of the forms were incomplete.

There have also been laws enacted which needed people to participate regularly in elections to keep their voting rights and reply to a letter sent to their residence, which makes it difficult for Black and Hispanics due to obscure areas and the fact that they’re half as likely than other people to get a day off work to vote.

The governor of Georgia, Brian Kemp, has been accused of using intimidation tactics to scare minority communities.

In Texas, the acting secretary of state said that he had a list of 95,000 non-citizens who were registered for voting in the state, and 58,000 of them had already cast a vote. That claim was proven untrue when it was noted that there were tens of thousands of people who were naturalized citizens.

In many states, felons are not allowed to vote even after they have served their sentence, and in Florida felons are allowed to vote only if they have paid an array of fees after serving their sentence, which sets an economic bar on their ability to vote.

This is evident that forces working against the equal rights for the minority communities are still working at full force to reverse the gains of civil right movements. The fight for the unhindered voting rights for the minority communities in the USA at the social, political, and judicial front will continue in the foreseeable future.

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