Heavy Metals

Order of the National Green Tribunal regarding pollution of Godavari river, Telangana, 29/05/2025

Order of the National Green Tribunal in the matter of News Item titled "Telangana: Deepening pollution crisis in Godawari threatens lives livelihoods appearing in the Telangana Today dated 13.05.2025" dated 29/05/2025. The application was registered suo-motu on the basis of the news item titled Telangana: Deepening pollution crisis in Godawari …

Stuck in the mud

Some 30 years ago, as the United States began to tighten its environmental regulations on residential and industrial wastewater, operators of sewage-treatment plants embraced what seemed an eminently sensible idea. They decided to take the rich organic sludge left over after clean water is extracted and sell it to farmers …

Court asks to close polluting industries in Pali

on april 11, the Jodhpur bench of the High Court of Rajasthan ordered closure of 126 industries operating in non-conforming areas in Pali, infamous for pollution from its dyeing and printing industries. The court issued two orders in response to petitions filed by industry groups

Panel against toxic colours

The state environment department will come out with a roadmap next month to stop use of toxic colours on idols so that the Hooghly is not polluted during immersion. At a recent meeting of the state pollution control board, researchers and academics had expressed concern about the extent of the …

Recycling That Harms the Environment and People

Recycling That Harms the Environment and People Published: April 15, 2008 Recycling is supposed to be good for the environment. But if it's not carried out properly, certain kinds of recycling

Tilapia fish may have killed gharials in Chambal

scientists seem to have come to a conclusion on what could have killed more than 100 gharials in Chambal waters recently. Tilapia, an invasive fish could have caused the deaths along the Uttar Pradesh-Madhya Pradesh border, says a new report. Circumstantial evidences suggest that the critically endangered reptiles could have …

Quantifying spatio-temporal variations in heavy metal enormity of groundwaters from Ankaleshwar area

Heavy metal dispersion in groundwaters of Ankaleshwar Industrial Estate, south Gujarat displays colossal temporal variability in both degree and space. In order to facilitate the quantitative measure for site-specific variations, Normalized Difference Dispersal Index (NDDI) maps for five en ironmentally sensitive heavy metals (Ni, Zn, Cu, Mn and Pb) were …

Retrospective metal data of the last 100 years deduced by moss, Barbula sp. from Mussoorie city, Garhwal Hills, India

This communication is the first attempt at contributing to monitoring and systematic gathering of information on the heavy metal profile of the environment, i.e. retrospective study of the environmental metal data (Pb, Fe, Zn, Cd and Ni) of the past 100 years, i.e. 1895

Gadget recycling may be poisoning China's children

Think about this next time you upgrade your PC: toxic metals from old electronic goods are finding their way into school grounds in China. Seventy per cent of the world's discarded phones and computers are exported to China. Most are processed in family-run workshops, where the circuit boards are ripped …

Synergistic use of transgenic plant to remediate the soil

The goal of this study was to assess the phytoremediation potential of transgenic Indian mustard plants. The increase in metal accumulation as a result of these genetic engineering approaches is typically two-to-threefold more metal per plant, which potentially enhances phytoremediation efficiency by the same factor. The significance of this finding …

A study on the heavy metal content in the bio degradable solid wastes of Guwahati City

The huge amount of solid waste generation and their disposal has become a major case of concern at present. In Guwahati city about 500 metric tonnes of solid wastes are generated daily. The solid wastes collected from the various parts of the city has different heavy metal content dependeing upon …

Status of groundwater quality in India: Part-II

The ground water quality of the 14 Metropolitan Cities of Faridabad, Delhi, Jaipur, Bhopal, Indore, Jabalpur, Nagpur, Nasik, Pune, Bangalore, Hyderabad, Vishakhapatnam, Patna and Kochi has been assessed to see the suitability of ground water for domestic and irrigation applications. Twenty five ground water samples were collected each during pre- …

Specification for the grading of mangoes: draft CARICOM standard

This draft CARICOM standard was prepared by the Regional technical Committee (RTC) for Agricultural Commodities, hosted by the CARICOM Member State, Dominica. This regional standard was developed in an effort to: Avoid misunderstanding and confusion among those involved in the marketing chain; Provide an objective basis for relating price to …

Impacts of heavy metals on accumulation of essential micronutrients and chlorophylls in some vegetables

Pot experiments was conducted to observe the impact of CdCl2, CuCl2, Pb(NO3)2 and ZnCl2 on chlorophylls of Brassica juncea, Brassica rapa, Lactuca sativa, Lepidium sativum and Daucus carota. Present studies suggest that depletion of essential micronutrients like Zn and Fe; or Zn and Cu; or Fe and Mn in the …

Heavy metals leaching in Indian fly ash

Fly ash is an industrial waste generated from thermal power plants. A large part of fly ash produced is disposed of with very high environmental risk. In the present paper, laboratory leaching test has been used to determine the potential mobility of Pb, Cd, Cr, Cu, Zn, Fe, Mn and …

Mechanism of chromium toxicity in pathogenic sewage bacteria

Toxic effects of chromium on pure culture of Salmonella paratyphi-B and Shigella flexneri isolated from sewage effluent were studied.

Bioremediation of ammonia, nickel and hexavalent chromium from synthetic solutions by non-pathogenic microorganisms

Bioremediation seems to be a good alternative to conventional clean-up technologies. Bioremediation has advantage over conventional physical and chemical methods such as precipitation, adsorption, electrodialysis and reverse osmosis. The aim of this work was to remove ammonia, nickel and hexavalent chromium from synthetic solutions by bioremediation technique.

Impact of industrial effluents on germination, growth and bioaccumulation of heavy metals in different parts of Hibiscus

Effects of industrial effluents on germination, growth, protein content and metal accumulation patterns in Hibiscus esculentus L. were studied. Effluent from two factories in the industrial belt of Cochin, Kerala were used to soak the seeds for germination and to irrigate the seedlings in the field after physico-chemical analysis. Results …

Study of heavy metal levels in the soils of Pala Municipality, Kerala

The study involves the atomic absorption analysis of four selected heavy metals lead, cadmium, zinc and copper pollution in the soil samples of Pala municipality. A total of 120 surface soil samples (0-5 cm) and corresponding 120 sub-surface soil samples (5-10 cm) were collected from industrial, agricultural, road side and …

Environmental pollution at a solid waste disposal site

Dhaka city produces tonnes of solid wastes everyday. Dhaka City Corporation (DCC) does not have any sanitary landfill for ultimate disposal of solid waste and for a long time it is a common practice of DCC to dipose off solid waste in open low lying areas without any segregation andf …

Studies on trace metal levels in soil and water of Tipong, Tirap and Tikak collieries of Makum coal field, Tinsukia, Assam

The trace metal levels were studied in soil and water of Tipong, Tirap and Tikak Collieries of Makum Coal Field, Tinsukia, Assam. The toxic trace metals were analyzed using Atomic Absorption Spectrophotometer (AAS). On the basis of the results obtained, it is clear that continuous mining operations have left permanent …

  1. 1
  2. ...
  3. 30
  4. 31
  5. 32
  6. 33
  7. 34
  8. ...
  9. 40

IEP content by date loading...
IEP child categories loading...