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 4:50 PM

Has Hollywood finally decided to fight “Reel Life Racism”

Back in the 1960s, when the Civil Rights Movement was slowly gaining momentum in the United States, broadcasting services were employed to gather support for the movement. Images of various kinds of atrocities and violence being rendered to nonviolent Black demonstrators were broadcasted into American houses to raise awareness about the movement.

However, the response of Hollywood so far can be explained in a single word- tragic! Hollywood as a major media and content producer has massively shaped the American culture. However it has not much to show as a positive influence on race issues.

A classic 1940’s musical movie, Holiday Inn had the famous song in which White stars performed in blackface. In a 1980s hit, “Indiana Jones and the Temple of Doom” the Indians are depicted as barbaric and uncivilised. The list of such racial stereotypes is huge to be reproduced here.

Legendary Hollywood actor John Wayne made highly offensive comments in a playboy interview. His exact words are, “I believe in white supremacy until the Blacks are educated to a point of responsibility. I don't believe in giving authority and positions of leadership and judgment to irresponsible people.” He further goes on to make a series of comments, that ideally should not be coming from someone with so much influence in Hollywood.

Many legendary actors and industry icons too have struggled due to racism in Hollywood. Bruce Lee is a fine example of a person who fought against racism in the industry and refused to be cast in many roles that portrayed Chinese people in a negative light. He ultimately moved back to Hong Kong, partly due to the lack of appropriate roles. Actress Lucy Liu has also spoken about how she was too naïve to understand back in the early days as to why her friend would get multiple auditions every day, while she managed two or three in a month.

In 2015, there was a massive uproar regarding the Oscar winners after the academy awarded all 20 nominations to white actors. It quickly gained momentum with the hashtag #OscarsSoWhite becoming a global trend. Before #OscarsSoWhite, no one would have bothered to notice that 86% of top films predominantly featured white actors.

As per a Washington Post survey, film directors who ranked as the most influential decision-makers at Hollywood were predominantly whites. Hollywood might stress for newer reforms against racism on the big screen but that is not the reality at all. To put things into perspective, the Hollywood academy has never revealed information about the diversity of its members involved in the branches of the academy, such as writers, directors, etc.

The response of Hollywood movers and shakers was always akin to a tokenism, a call to push for producing more content involving black writers, producers, and actors.

George Floyd’s death was just the trigger it needed to burst out in the open the pent up anger over the centuries of discrimination, oppression, and systematic injustice meted out to black people. The way black people are portrayed in reel life directly impacts society’s attitude towards them in real life.

People started demanding that Hollywood production companies and studios should involve the people from the community in the decision-making process when the movie plot is based considerably on the members of those communities. They have also demanded that older movies depicting racially insensitive narratives should be taken out of circulation.

Disney, one of the most reputed names in Hollywood, chose to remove the movie “Song of the South” from US distribution, when the criticism for the movie grew, even though it remains available for those who know where to look. They have also announced the plan to revamp the famous Splash Mountain ride at Disneyland and Disney World to include the character of Princess Tiana- Disney’s first African American princess from the movie The Princess and the Frog.

UK TV broadcaster Sky has added a disclaimer to approximately a dozen films stating, “This film has outdated attitudes, language and cultural depictions which may cause offence today."

HBO max recently pulled the iconic film, Gone with the wind because of its controversial depiction of black stereotypes. It returned with a four and a half minute introductory video by black scholar Jaqueline Stewart for a better understanding about racism.

Ever since the resurfacing of the playboy interview of John Wayne, students and alumni at USC have been protesting against Wayne’s exhibit at the campus. However, USC has finally decided to remove the exhibit.

All these reforms are a direct result of the audience being more and more aware of racism and prejudice. However, it is Hollywood’s turn to step up and push for bigger reforms. While it would be a challenging and bold endeavor, Hollywood’s global influence makes it imperative for the industry to undergo much-needed reforms.

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