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41.
Agdi K Bouaid A Esteban AM Hernando PF Azmani A Camara C 《Journal of environmental monitoring : JEM》2000,2(5):420-423
A new viable remediation technique based on the use of diatomaceous earth is proposed to improve the ecological system. Its ability to remove atrazine and the four organophosphorus pesticides parathion-methyl, chlorpyriphos, fenamiphos and methidathion from river and waste waters has been proven. A series of experiments including variable conditions, such as temperature, pH, contact time, pesticide concentration and adsorbent quantity, were performed to demonstrate the efficiency of pesticide removal from three different water samples. The batch experiments showed that diatomaceous earth was able to remove 95% of chlorpyriphos, 75% of methidathion and parathion-methyl and 55% of atrazine and fenamiphos from all types of waters tested. The individual adsorption of each pesticide on diatomaceous earth could be described by the Freundlich isotherm and a tentative adsorption mechanism was proposed. The Freundlich coefficient (Kf) and Freundlich constant (1/n) appeared to be closely related to the physicochemical properties (Kow, solubility) of the compounds. The actual results support the conclusion that diatomaceous earth has the potential to serve as an extractant in remediation techniques. 相似文献
42.
This article analyzes what motivates companies to obtain ISO 14001 certification and what factors within companies determine the success or failure of the environmental management standard. The most important motivators appear to be the worldwide recognition accorded the ISO 14000 norm, and its applicability to all sectors. The factors that most contribute to success are the company's experience in management systems and involvement by management. Failure most often results from lack of employee training and organizational rigidity. © 2001 John Wiley & Sons, Inc. 相似文献
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Duarte-Guardia Sandra Peri Pablo L. Amelung Wulf Sheil Douglas Laffan Shawn W. Borchard Nils Bird Michael I. Dieleman Wouter Pepper David A. Zutta Brian Jobbagy Esteban Silva Lucas C. R. Bonser Stephen P. Berhongaray Gonzalo Piñeiro Gervasio Martinez Maria-Jose Cowie Annette L. Ladd Brenton 《Mitigation and Adaptation Strategies for Global Change》2019,24(3):355-372
Mitigation and Adaptation Strategies for Global Change - Soils hold the largest pool of organic carbon (C) on Earth; yet, soil organic carbon (SOC) reservoirs are not well represented in climate... 相似文献
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Bräuner EV Mayer P Gunnarsen L Vorkamp K Raaschou-Nielsen O 《Journal of environmental monitoring : JEM》2011,13(3):522-526
Organochlorine pesticides are present in the environment and suspected of causing serious health effects. Diet has been the main exposure source, but indoor source release is gaining focus. Within a monitoring study of polychlorinated biphenyls of Danish buildings built during the 1960s and 1970s, we coincidently determined extreme levels of dichlorodiphenyltrichloroethane (DDT) levels in two of ten random samples. This raises concern and further large scale investigations are warranted to confirm this. 相似文献
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Luiz-Silva Wanderson Maceira Maria Elvira Pieiro Rotunno Filho Otto Corra Chou Sin Chan 《Environmental Modeling and Assessment》2022,27(1):13-28
Environmental Modeling & Assessment - The São Francisco River Basin plays a critical role in the hydroelectrical operational planning of Brazil. Understanding the hydroclimatic dynamic... 相似文献
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Victoria González Carman Florencia Botto Esteban Gaitán Diego Albareda Claudio Campagna Hermes Mianzan 《Marine Biology》2014,161(2):339-349
Feeding ecology of juvenile green turtles (Chelonia mydas) was studied from 2008 to 2011 at Samborombón Bay (35°30′–36°30′S, Argentina), combining data on digestive tract examination and stable isotope analysis through a Bayesian mixing model. We found that animal matter, in particular gelatinous plankton, was consumed in large proportions compared to herbivorous food items such as terrestrial plants and macroalgae. This diet is facilitated by the high abundance of gelatinous plankton in the region, thus confirming the adaptive foraging behaviour of the juveniles according to prey abundance in the SW Atlantic. To our knowledge, this is the first study to employ this combination of techniques and to conclusively demonstrate that animal matter, in particular gelatinous plankton, is important in the diet of the neritic green sea turtles. 相似文献
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Saborimanesh Nayereh Walsh David Yerushalmi Laleh Arriagada Esteban Castillo Mulligan Catherine N. 《Environmental science and pollution research international》2019,26(25):25573-25582
Environmental Science and Pollution Research - This paper presents the treatment of a nitrite-limited wastewater by partial nitrification/anammox process under different dissolved oxygen (DO)... 相似文献