high co2 concentration
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2022 ◽  
Vol 238 ◽  
pp. 111922
Author(s):  
Lingfeng Dai ◽  
Lixin Lu ◽  
Chun Zou ◽  
Qianjin Lin ◽  
Wenxiang Xia ◽  
...  

2021 ◽  
Vol 5 (1) ◽  
pp. 53
Author(s):  
Andriani Manataki ◽  
James M. Mwase ◽  
Casper van der Eijk

The Pedersen process is an alumina production process, which combines pyrometallurgical and hydrometallurgical methods. In the pyrometallurgical stage, limestone is calcined and CO2 is generated. This off-gas can be captured with a high CO2 concentration. At the end of the hydrometallurgical process, aluminum hydroxides, like bayerite, are precipitated using CO2. In this paper, experimental work on precipitation of aluminum hydroxides through the addition of a mixture of CO2, O2 and N2 is presented. The parameters varied, as were the percentages of each gas and the temperature. The indicators measured were the time until the beginning of precipitation and the time that the precipitation lasts. These tests simulate the use of a smelter furnace off-gas in the precipitation stage of the Pedersen process and have shown promising results.


Fuel ◽  
2021 ◽  
Vol 304 ◽  
pp. 121403
Author(s):  
Fan Hu ◽  
Pengfei Li ◽  
Wenhao Li ◽  
Cuijiao Ding ◽  
Junjun Guo ◽  
...  

2021 ◽  
Vol 10 (8) ◽  
pp. e16710817060
Author(s):  
Juracy Barroso Neto ◽  
José Raliuson Inácio Silva ◽  
Cinara Wanderléa Felix Bezerra ◽  
Thialla Larangeira Amorim ◽  
Pedro José Hermínio ◽  
...  

Drought and predicted changes in climate, such as increased atmospheric CO2 concentration and high temperature, may affect the growth and productivity of crop plants and generate varying responses, including morphological, physiological, biochemical and molecular changes. Water deficit negatively affects photosynthesis, while increasing CO2 can benefit plants and attenuate photo-oxidative damage, especially in C3 metabolism species. However, the excess heat associated with this increase can affect photosynthetic efficiency differently, depending on the species and/or variety studied. In addition, the responses to the combination of these factors are poorly understood and cannot be extracted directly from the effects of each of these agents applied in isolation. This review sought to address the isolated and combined effects of water deficit and climate change on agricultural production, reporting how plant metabolism is affected by rising temperatures and high CO2 concentration. This understanding is important to monitor the behavior of plants in the face of future climatic scenarios in order to develop strategies that can confer resistance to plants and ensure food security for agricultural production.


2021 ◽  
Vol 104 ◽  
pp. 326-334
Author(s):  
Jun Shen ◽  
Jiaxun Liu ◽  
Shengxiang Deng ◽  
Sha Wang ◽  
Bin Chen ◽  
...  

Author(s):  
Liwen Liang ◽  
Pengfei Li ◽  
Daohua Zu ◽  
Fan Hu ◽  
Zhaohui Liu

2021 ◽  
Vol 14 (1) ◽  
pp. 115-124
Author(s):  
Andrzej WILK ◽  
Tomasz SPIETZ ◽  
Lucyna WIĘCŁAW-SOLNY ◽  
Aleksander KRÓTKI ◽  
Justyna TARNOWSKA

2020 ◽  
Vol 20 (2020) ◽  
pp. 246-247
Author(s):  
Luiz A. De Andrade ◽  
Ricardo Calheiros ◽  
Ligia Gaigher Franco ◽  
Rogério Ramos

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