نتایج جستجو برای: human wastes
تعداد نتایج: 1654556 فیلتر نتایج به سال:
Fast urbanization and serpentine uses of electronic gadgets during the last two decades has led to genesis of a whopper character of electronic wastes resulting in soil, water and environmental pollutions. Thus pollution administer along with environmental safety has become the greatest worry of environmental scientists and activists worldwide. Dumping of electronic wastes, lone of the by-produ...
This paper looks at waste minimization practices available to the paint and coatings industry. The paper begins with an introduction to the industry and a description of the products. The steps involved in the manufacture of paints and coatings are then described. The paper then identifies the wastes generated. Source reduction and recycling techniques are the predominant means of minimizing wa...
Generation of municipal solid waste (MSW) continues to rise, which leads to loss of resources and increased environmental risks. The conventional treatment of wastes such as open dumping and land filling cause environmental degradation. Since the major fraction of wastes generated in India is organic wastes, composting has emerged as one of the best methods for treatment of wastes. Composting, ...
Introduction and purpose: Improper management of healthcare waste (HCW) can pose considerable risks to human health and the environment and cause serious problems in developing countries such as Iran. In this study, we sought to determine the hazards of HCW in the public hospitals affiliated to Abadan School of Medicine using the preliminary hazard analysis (PHA) method.&nbs...
Food processing produces large quantities of by-products. Disposal of waste can lead to environmental and human health problems, yet often they can be turned into high value, useful products. Crustacean shell wastes from shrimp, crab, lobster, and krill contain large amounts of chitin, a polysaccharide that may be extracted after deproteinisation and demineralization of the exoskeletons .crusta...
Hazardous organic wastes from industrial, military, and commercial activities represent one of the greatest challenges to human beings. Advanced oxidation processes (AOPs) are alternatives to the degradation of those organic wastes. However, the knowledge about the exact mechanisms of AOPs is still incomplete. Here we report a phenomenon in the AOPs: induced effects, which is a common property ...
Overpopulation is no doubt worldwide concern as it brings different problems to urbanization process as well as environment. Waste is number one side product of overpopulation. Waste generation is ever increasing in both urban and suburban area and has led to many environmental issues. Many of the waste generated have potential to be transformed into value added products. By recycling, reusing ...
Heavy Metal Pollution from Gold Mines: Environmental Effects and Bacterial Strategies for Resistance
Mining activities can lead to the generation of large quantities of heavy metal laden wastes which are released in an uncontrolled manner, causing widespread contamination of the ecosystem. Though some heavy metals classified as essential are important for normal life physiological processes, higher concentrations above stipulated levels have deleterious effects on human health and biota. Bacte...
The operating conditions in spouted bed regime of uniform beds consisting of different biomass wastes dry and wet have been studied to determine the applicability of conical spouted beds with a draft tube in the drying of biomass wastes. This experimental study has been carried out at room temperature and the effect of the solid humidity on the stability of beds of biomass wastes has been deter...
In several countries, low-level radioactive wastes are treated and stored awaiting construction and operation of a final repository. In some cases, interim storage may be extended for decades requiring special attention regarding security issues. The International Atomic Energy Agency (IAEA) recommends segregation of wastes that may be exempted from interim storage or ultimate disposal. The pap...
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