{"id":4365,"date":"2015-11-28T20:29:00","date_gmt":"2015-11-28T20:29:00","guid":{"rendered":"https:\/\/nilu.gnist.dev\/2015\/11\/skipsopphugging-slipper-miljogifter-ut-i-lufta\/"},"modified":"2020-09-10T08:06:20","modified_gmt":"2020-09-10T06:06:20","slug":"shipbreaking-releases-environmental-pollutants-into-the-air","status":"publish","type":"post","link":"https:\/\/nilu.gnist.dev\/en\/2015\/11\/shipbreaking-releases-environmental-pollutants-into-the-air\/","title":{"rendered":"Shipbreaking releases environmental pollutants into the air"},"content":{"rendered":"

Environmental and hazardous chemicals are used in many contexts \u2013 from manufacturing to consumer products. They are dispersed in the environment and transported by water and air. New problem substances are added, while others have been phased out through regulations and prohibitions.<\/p>\n

Many prohibited substances are nevertheless still found in products and equipment around the world, and how such old equipment is managed and treated, is vital. A new study from NILU \u2013 Norwegian Institute for Air Research shows that when old ships are broken up on beaches in Bangladesh \u2013 so-called “beaching” \u2013 numerous pollutants evaporate into the air. Thus, the substances may be inhaled, and pose a health risk for people living and working in these areas.<\/p>\n

Are we exporting our problems?<\/h2>\n

Bans and other measures to remove the materials and products with the \u201cold\u201d environmental pollutants, such as PCBs and DDT, have led to reduced emissions during the last decades here in Norway. An interesting question for the scientists at NILU, were whether we partly have exported the problems related to regulated pollutants, rather than solved them.<\/p>\n

Environmental pollutants that were banned decades ago, such as PCBs, are still found in older products and materials \u2013 such as the old ships. And when these ships are dismantled under primitive conditions, like on the beaches outside Chittagong, a number of pollutants are released into the air.<\/p>\n

Air samples for the first time<\/h2>\n

The NILU researchers are the first to take air samples from a total of 23 observation stations in Chittagong and the surrounding beach areas. The analysis show that airborne concentrations of so-called \u201cold\u201d environmental pollutants are high compared to other sites in Asia and Europe.<\/p>\n

Such surveys of environmental pollutants are important, and the extensive measurements from Chittagong revealed a wide range of substances. The researchers found “old” pollutants such as PCBs and DDT, but also “newer” pollutants such as chlorinated paraffins and tars (PAHs).<\/p>\n

PCBs were used previously in e.g. coolants and electronic devices, while insecticides such as DDT are probably still in use in the area. Chlorinated paraffins are currently widely used in plastics, paints and insulation materials, while PAHs may be byproducts from local industrial and combustion processes.<\/p>\n

These pollutants have different characteristics, but their common denominator is that they may lead to adverse health effects for humans and animals.<\/p>\n

Recognizes the problem<\/h2>\n

\u2013 No similar studies of the air in Chittagong have been done before, and the concentrations we see are high, says postdoctoral fellow Therese Haugdahl N\u00f8st at NILU.<\/p>\n

\"Therese
Postdoctoral fellow Therese Haugdahl N\u00f8st has reported the air concentrations for environmental pollutants in Chittagong, and the results show hazardous levels. Photo: Linda Hanssen \/ NILU<\/figcaption><\/figure>\n

N\u00f8st is supported by senior scientist Knut Breivik, also from NILU. He has led the project, which is funded by the Norwegian Research Council through FRIPRO.<\/p>\n

\u2013 It is particularly disturbing when hazardous waste is exported and recycled in a primitive manner, he says, \u2013 because it can lead to high emissions. The campaign in Chittagong confirmed our suspicion that there is a similar problem associated with shipbreaking, as with similar findings made in poor countries that receive large amounts of electrical and electronic waste from the rich world<\/a>.<\/p>\n

Pollutants on the beach and in the city<\/h2>\n

Measurements of air on the beaches outside Chittagong show very high levels, with somewhat lower results in the city.<\/p>\n

\u2013 After dismantling the ship, the parts are transported from the beach to various facilities outside the beach area. Some also end up nearer the center of town, says environmental consultant Scott Randall at COWI. He was previously employed as a scientist at NILU, and participated in several research projects in Bangladesh. He has also performed measurements and dispersion calculations of particulate matter, nitrogen dioxide and sulfur dioxide in Chittagong, where air quality is generally a major issue.<\/p>\n

Randall says that the different facilities specialize in managing specific parts of the ships and to process them further once they are broken down. The melting of steel parts and other metals has the worst impact on the air quality, since it is done very crudely, and in some cases very close to densely populated areas.<\/p>\n

Pollutant levels of concern<\/h2>\n

NILU’s study show that the measured airborne concentrations of various environmental contaminants could represent a danger to human health. On several of the study’s measuring sites in Chittagong, the levels in the air are considerably above the threshold the World Health Organization has set for health risks by inhalation of carcinogens.<\/p>\n

Shipbreaking is already known to be harmful for human health by injuries and deaths. Now scientists have shown that breathing the air also represents a health hazard to those working as shipbreakers or living in nearby areas.<\/p>\n

\"Passiv
The image shows air samplers in the city of Chittagong in Bangladesh. The large “metal dome” collects air samples for analysis of environmental pollutants, while the three small cylinders measure nitrogen dioxide (blue), sulfur dioxide (red) and ozone (white). Photo: Scott Randall \/ NILU<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Ved Chittagong i Bangladesh kjøres utrangerte skip fra hele verden opp på stranden og hugges opp på stedet. En studie fra NILU viser at luftkonsentrasjonen av «gamle» miljøgifter som PCB-er er høyere der enn andre steder i Asia og i Europa.<\/p>\n","protected":false},"author":1,"featured_media":3049,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_searchwp_excluded":"","footnotes":""},"categories":[21],"tags":[],"class_list":["post-4365","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-newsarchive"],"acf":[],"_links":{"self":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/posts\/4365","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/comments?post=4365"}],"version-history":[{"count":6,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/posts\/4365\/revisions"}],"predecessor-version":[{"id":11844,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/posts\/4365\/revisions\/11844"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/media\/3049"}],"wp:attachment":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/media?parent=4365"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/categories?post=4365"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/tags?post=4365"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}