Chemical Pollution

  • Degrading air quality in metro cities is a matter of concern for public health. Massive tree plantation drives are often conducted in order to provide oxygen to choking cities. But trees, much like humans, also are severely affected by pollutants in the air. In such a situation, knowledge about tree...
    arathiposted 3 weeks 4 days agoread more
  • A group of scientists and students are braving the heat and dust this summer in the national capital to map all possible sources of air pollution, so that by winter this year, we can get a fair idea of different sources of pollution in the city. Ground level data about emissions from as many as 26 ...
    arathiposted 1 month 2 weeks agoread more
  • Nanotechnology deals with particles that are several thousand times smaller than the human hair, and it is being put to use in a variety of applications such as drug delivery and diagnostic tests.  A group of Indian researchers has now developed a simple technique for deriving nanoparticl...
    arathiposted 1 month 3 weeks agoread more
  • A radical new method is fast emerging as an effective and sustainable solution to increasing pollution in urban lakes. Called floating treatment wetlands (FTW), they are artificial islands with plants that stay afloat on the lake. The plants clean the lake through hydroponics system, resulting in a ...
    arathiposted 2 months 1 week agoread more
  • In a significant input for the growing debate on global climate change, a study by researchers at the Dehradun-based Wadia Institute of Himalayan Geology (WIHG) has found that there is a remarkable increase in the concentration of black carbon in the atmosphere near the pilgrim town of Gangotri in U...
    arathiposted 2 months 1 week agoread more
  • Korba in Chhattisgarh is an industrial area which has a significant number of coal mines and thermal power plants. Fly ash is a byproduct of the thermal power plants and has become a significant problem for the residents of Korba now. More than one lakh metric tonnes of fly ash is generated annually...
    makarandpurohitposted 2 months 1 week agoread more
  • Treatment of wastewater containing industrial dyes and toxic heavy metals is a major environmental problem as available treatment techniques are not very efficient and environment-friendly. Now a team of Indian scientists has developed a nanomaterial drawn from seaweed for effective treatment of tox...
    arathiposted 2 months 2 weeks agoread more
  • India seeks to bring water from Nepal's Sharda river to supplement Yamuna near Delhi As part of Prime Minister Narendra Modi’s ambitious river interlinking plan, the union government has approached Nepal for transferring excess water from River Sharda, also called the Mahalaki, to the Yamuna near...
    seetha@indiawat...posted 2 months 4 weeks agoread more
  • What happens after an environmental law is made or an environmental approval is granted to a project? Are all the safeguards complied with? Do the authorities in charge enforce the environmental regulations and laws proactively? What are the impacts that arise due to non-compliance with environmenta...
    arathiposted 3 months 1 week agoread more
  • Located in the Hauz Khas urban village in the busy metropolis of Delhi is an exquisitely landscaped lush green patch. This deer park, with spotted deer, peacocks and numerous birds, leads to an incredibly beautiful lake. As per a plaque at the site, the lake is a part of the medieval (13th century) ...
    Amita Bhaduriposted 3 months 2 weeks agoread more
  • Around 25 lakh pilgrims across the country took a holy dip in the Mahanadi during the Rajim kumbh festival held in Rajim from January 31-February 13, 2018. For this annual religious extravaganza at the confluence of the Mahanadi, Sondur and Pairi rivers in Chhattisgarh, the state government organise...
    makarandpurohitposted 3 months 3 weeks agoread more
  • River Mutha, the pride of Pune, lovingly called 'Muthai' or 'mother Mutha', is dying a slow death, thanks to the rapidly urbanising city which is depositing huge amounts of untreated sewage and dirt in its waters. Mutha originates at a village named Vegare, in the Western Ghats, about 45 km to the ...
    aarti kelkar kh...posted 4 months 3 weeks agoread more
  • Widespread use of digital devices--mobile phones, tablets, computers, smart watches and more--has made electronic waste a new environmental problem. Discarded gadgets result in massive piles of e-waste, which is contaminating soil and groundwater in the national capital, a new study has pointed out....
    arathiposted 5 months 3 days agoread more
  • Persistent use of chemical pesticides to increase crop productivity has led to their accumulation in soil, water and even food. Now a group of researchers from Pune have isolated an enzyme from a pest and found that it can be used to clean up pesticide residues from food and environment. Researcher...
    arathiposted 5 months 1 week agoread more
  • Amar Singh sits in his huge courtyard at the centre of his home in the village of Atraula in Meerut. Lying in the far west part of Uttar Pradesh, this is a flourishing sugarcane belt. An important agricultural region, its demographic, economic and cultural patterns are similar to that of nearby Hary...
    Amita Bhaduriposted 5 months 2 weeks agoread more
  • Hotels, industries, ashrams polluting the Ganga to be sealed The Uttarakhand high court has asked the state government and the district magistrates of all 13 districts to “identify” and “seal” the industries, hotels, ashrams etc, that are releasing untreated sewage into the Ganga and its tr...
    aarti kelkar kh...posted 5 months 4 weeks agoread more
  • Cauvery found to be the most toxic river in the country  A recent study has found that Cauvery, one of the important rivers in India, is loaded with the highest amount of toxins, despite having the lowest discharge into the sea. The total dissolved solids in the river have been found to be six...
    aarti kelkar kh...posted 5 months 4 weeks agoread more
  • Government data shows decreasing suicide trend among farmers for the second consecutive year According to government statistics, after peaking in 2015, farmer suicides have shown a decreasing trend for the second year in succession in 2017 in the six suicide-prone districts--Vidarbha’s Buldhana, ...
    swatiposted 6 months 5 days agoread more
  • There is a huge dearth of cleanliness in India--open defecation is rampant; garbage management in most cities is in shambles; toxic hospital and industrial wastes and sewage are allowed to drain into water sources and food products are laced with chemicals. However, we still seem to be oblivious to...
    aarti kelkar kh...posted 6 months 5 days agoread more
  • The fields are silvery white with raw salt crusts in the vicinity of Nawa, a small town on the northwestern banks of Sambhar lake, India’s largest inland lake. Nawa lies about 90 kilometres east of Jaipur. Also an extensive saline wetland and a Ramsar site, the blinding white salt flats ...
    Amita Bhaduriposted 6 months 1 week agoread more

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A study reveals deciduous trees with compound leaves more tolerant to air pollution.

Degrading air quality in metro cities is a matter of concern for public health. Massive tree plantation drives are often conducted in order to provide oxygen to choking cities. But trees, much like humans, also are severely affected by pollutants in the air. In such a situation, knowledge about trees capable of withstanding heavily polluted environment is needed, particularly while designing green belts in urban areas.

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Scientists and students come together to map air pollution sources in the capital.

A group of scientists and students are braving the heat and dust this summer in the national capital to map all possible sources of air pollution, so that by winter this year, we can get a fair idea of different sources of pollution in the city.

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Super tiny particles derived from table sugar can detect lead in water which is harmful for human consumption.

Nanotechnology deals with particles that are several thousand times smaller than the human hair, and it is being put to use in a variety of applications such as drug delivery and diagnostic tests. 

A group of Indian researchers has now developed a simple technique for deriving nanoparticles from table sugar and have shown that these particles can be used as sensors for detecting lead in water. 

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Neknampur lake serves as a fitting example of how low cost but effective natural techniques can be used to clean city lakes that are choking with pollutants.

A radical new method is fast emerging as an effective and sustainable solution to increasing pollution in urban lakes. Called floating treatment wetlands (FTW), they are artificial islands with plants that stay afloat on the lake. The plants clean the lake through hydroponics system, resulting in a cleaner, beautiful lake and an improved habitat for creatures that depend on it. We have already heard of this being successfully implemented in Hauz Khas lake in Delhi.

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A study finds an increased concentration of black carbon in Gangotri region during tourist seasons.

In a significant input for the growing debate on global climate change, a study by researchers at the Dehradun-based Wadia Institute of Himalayan Geology (WIHG) has found that there is a remarkable increase in the concentration of black carbon in the atmosphere near the pilgrim town of Gangotri in Uttarakhand during the two annual tourist seasons of April to June and during September and October. 

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The video tells the story of residents of Korba and nearby villages who are affected by the fly ash from power plants which makes Korba the fifth critically polluted area in the country.

Korba in Chhattisgarh is an industrial area which has a significant number of coal mines and thermal power plants. Fly ash is a byproduct of the thermal power plants and has become a significant problem for the residents of Korba now. More than one lakh metric tonnes of fly ash is generated annually by the eight thermal power plants in Korba in Chhattisgarh which produce 6090 megawatts of electricity.

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A team of scientists have synthesised graphene-iron sulfide nanocomposite from abundantly found seaweed Ulva fasciata through direct pyrolysis technique.

Treatment of wastewater containing industrial dyes and toxic heavy metals is a major environmental problem as available treatment techniques are not very efficient and environment-friendly. Now a team of Indian scientists has developed a nanomaterial drawn from seaweed for effective treatment of toxic wastewater without using any chemicals.

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India seeks to bring water from Nepal's Sharda river to supplement Yamuna near Delhi

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Here are two new groundtruthing studies by CPR- Namati environmental justice (EJ) program.

What happens after an environmental law is made or an environmental approval is granted to a project? Are all the safeguards complied with? Do the authorities in charge enforce the environmental regulations and laws proactively? What are the impacts that arise due to non-compliance with environmental regulations? How can affected communities pursue remedies? 

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Floating wetlands have been constructed on Hauz Khas lake in an attempt to naturally restore it.

Located in the Hauz Khas urban village in the busy metropolis of Delhi is an exquisitely landscaped lush green patch. This deer park, with spotted deer, peacocks and numerous birds, leads to an incredibly beautiful lake. As per a plaque at the site, the lake is a part of the medieval (13th century) city of Delhi Sultanate. The Hauz Khas (royal lake) was originally built by Alauddin Khilji to supply water to the residents of the capital city, Siri. 

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