Safeguarding global plant health: the rise of sentinels

Описание

Тип публикации: статья из журнала

Год издания: 2019

Идентификатор DOI: 10.1007/s10340-018-1041-6

Ключевые слова: Cation exchange resin, Cation resin exchange leaching, Ion exchange, Oxidized nickel ores, Ust-Porozhinskoe deposit, Woody plants, Exotic pests and pathogens, Early warning

Аннотация: The article is devoted to the ecological process of cation resin exchange leaching of oxidized nickel ores using cation exchange resin in the hydrogen form. The process is based on the formation of a low dissociating compound between counterions of cation exchange resin and anions of the leach phase. The oxidized nickel ore of the Показать полностьюUst-Porozhinskoe deposit were chosen as objects of study. The ore is characterized high nickel content (an average of about 0.9%, a maximum of 2.1%). The efficiency of the leaching process was characterized by the weight fraction of the extracted metal. The weight fraction was calculated as the ratio of the weight of the metal in the cation exchange resin to its weight in the sample of the ore. The rate of the process, the influence of temperature, the amount of cation resin exchanger and other factors were investigated, and the optimal leaching conditions were determined. A comparison of cation exchange leaching between the dissolution of ore by concentrated hydrochloric acid was carried out. It has been established that the selectivity of nickel recovery during cation resin exchange leaching is significantly higher than in the case of leaching acid. So, the separation factor of nickel and zinc in the case of cation exchange dissolution is 270, which is 10 times higher than the value obtained by dissolution in acid. 45% nickel recovery is achieved in three stages of the process. Cation resin exchange leaching of oxidized nickel ores should be considered as the first stage of complex process of this of raw material, which allows selectively extracting about half of the nickel contained in the ore. Further, nickel leaching is possible in the course of acid dissolution of the ore. © 2018, “Ore and Metals” Publishing house. All rights reserved. The number of alien plant pests and pathogens is rapidly increasing in many countries as a result of increasing trade, particularly the trade in living plants. Sentinel plantings in exporting countries to detect arthropod pests and agents of diseases prior to introduction provide information about the likelihood of introduction and the potential impact on plants native to the importing country. Such plantings can consist of species that are native to exporting or importing countries (in-patria and ex-patria plantings). In-patria plantings consist of young woody plants of species that are commonly exported and can be used to identify pests that may be introduced to new countries via the trade in live plants. Ex-patria plantings consist of exotic young or mature woody plants and surveys may provide information about potential impacts of pests if these were to become established in a new country. We discuss the methods and benefits of this powerful tool and list examples of studies that highlight the large number of unknown organisms and pest-host relationships that can be detected. The usefulness of sentinel plantings is illustrated using examples of arthropod pests and fungal pathogens of European and Asian tree species that were identified in sentinel studies in China and the Asian Russia. The number of alien plant pests and pathogens is rapidly increasing in many countries as a result of increasing trade, particularly the trade in living plants. Sentinel plantings in exporting countries to detect arthropod pests and agents of diseases prio The number of alien plant pests and pathogens is rapidly increasing in many countries as a result of increasing trade, particularly the trade in living plants. Sentinel plantings in exporting countries to detect arthropod pests and agents of diseases prio The number of alien plant pests and pathogens is rapidly increasing in many countries as a result of increasing trade, particularly the trade in living plants. Sentinel plantings in exporting countries to detect arthropod pests and agents of diseases prio

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Издание

Журнал: JOURNAL OF PEST SCIENCE

Выпуск журнала: Vol. 92, Is. 1

Номера страниц: 29-36

ISSN журнала: 03722929

Место издания: HEIDELBERG

Издатель: SPRINGER HEIDELBERG

Персоны

  • Eschen R. (CABI, Delémont)
  • Kenis M. (CABI, Delémont)
  • O’Hanlon R. (Agri-Food and Biosciences Institute, Newforge Lane)
  • Santini A. (Institute for Sustainable Plant Protection CNR, Sesto Fiorentino)
  • Vannini A. (DIBAF, University of Tuscia, Viterbo)
  • Roques A. (Institut National de la Recherche Agronomique, Orléans)
  • Kirichenko N. (Institut National de la Recherche Agronomique, Orléans; Sukachev Institute of Forest SB RAS, Krasnoyarsk; Siberian Federal University, Krasnoyarsk)

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