scholarly journals Facile synthesis of cost-effective porous aromatic materials with enhanced carbon dioxide uptake

2013 ◽  
Vol 1 (44) ◽  
pp. 13926 ◽  
Author(s):  
Xiaofei Jing ◽  
Donglei Zou ◽  
Peng Cui ◽  
Hao Ren ◽  
Guangshan Zhu
Keyword(s):  
Carbon Dioxide ◽  
Cost Effective ◽  
Facile Synthesis ◽  
Carbon Dioxide Uptake

scholarly journals Effect of Gas Holdup on CO2 Biofixation by Spirulina sp. in the 20-liter Airlift Bioreactor

2021 ◽  
Author(s):  
Zahra Zarei ◽  
Peyman Malekshahi ◽  
Mohammad Hossein Morowvat ◽  
Rahbar Rahimi ◽  
Seyyed Vahid Niknezhad
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Sequestration ◽  
Cost Effective ◽  
Dry Weight ◽  
Airlift Bioreactor ◽  
Dark Cycle ◽  
Carbon Dioxide Uptake ◽  
Hydrodynamic Parameters ◽  
The Earth ◽  
Bubble Sizes

Abstract The rise of CO2 concentration in the Earth is a major environmental problem, which cause global warming. To solve this issue, several methods have been applied, but among these solutions using microalgae is an eco-friendly and cost-effective way of reducing carbon dioxide, as they can efficiently sequestrate CO2 and produce biomass as valuable products. In this study, hydrodynamic parameters, bubble sizes and carbon dioxide uptake were investigated in an airlift bioreactor. Experiments were studied at two different superficial gas velocities (0.185 and 0.524 cm/s) for Spirulina sp. microalgae into a 20-liter airlift bioreactor to find out the amount of carbon dioxide sequestration and cyanobacterial biomass. The highest efficiency of carbon dioxide removal and maximum dry weight of Spirulina sp. were achieved 55.48% and 0.86 g/L respectively at 5% CO2 (v/v) and superficial velocity of 0.185 cm/s. This experiment was conducted in 7 days, light intensity (2600 lux/m2), temperature (30\(\pm\)2 °C) and a light-dark cycle (12–12), which all were constant. The hydrodynamic parameters studied by Spirulina sp. demonstrated a capability of CO2 sequestration in this airlift photobioreactor.

Recent Advances in the Incorporation of CO2 for C-H and C-C bond Functionalization

2021 ◽  
Author(s):  
Sandeep Pimparkar ◽  
Aishwarya K. Dalvi ◽  
Adithyaraj Koodan ◽  
Siddhartha Maiti ◽  
Shaeel Al-Thabaiti ◽  
...  
Keyword(s):  
Organic Chemistry ◽  
Carbon Dioxide ◽  
Thermodynamic Stability ◽  
Cost Effective ◽  
Bond Functionalization ◽  
Synthetic Organic Chemistry ◽  
Recent Advances ◽  
Carbon Dioxide Co2

Carbon dioxide (CO2) has emerged as one of the exciting cost-effective, abundant, and ready-to-use C1 sources in synthetic organic chemistry. However, the thermodynamic stability, as well as the kinetic inertness,...

scholarly journals Carbon dioxide-based facile synthesis of cyclic carbamates from amino alcohols

2018 ◽  
Vol 54 (25) ◽  
pp. 3166-3169 ◽  
Author(s):  
Teemu Niemi ◽  
Israel Fernández ◽  
Bethany Steadman ◽  
Jere K. Mannisto ◽  
Timo Repo
Keyword(s):  
Carbon Dioxide ◽  
Amino Alcohols ◽  
Efficient Synthesis ◽  
Facile Synthesis

Selective, straightforward, and efficient synthesis of cyclic carbamates from CO2 and amino alcohols.

EFFECTS OF HERBICIDES ON CARBON DIOXIDE UPTAKE BY PINE SEEDLINGS

1967 ◽  
Vol 45 (7) ◽  
pp. 961-971 ◽  
Author(s):  
S. Sasaki ◽  
T. T. Kozlowski
Keyword(s):  
Carbon Dioxide ◽  
Gas Exchange ◽  
Soil Surface ◽  
Pinus Resinosa ◽  
Spray Application ◽  
Leaf Color ◽  
Carbon Dioxide Uptake ◽  
Chlorophyll Breakdown ◽  
Pine Seedlings ◽  
Steady Rate

Experiments were conducted on effects of herbicides applied to soil or sprayed on shoots on CO2 uptake of 3-year-old Pinus resinosa Ait. seedlings. When applied to the soil, atrazine, monuron, EPTC, and 2,4-D at 20 lb/ac (soil surface basis) or at 4000 p.p.m. variously decreased absorption of CO2. Monuron checked gas exchange most rapidly, with no CO2 uptake measurable after 10 days. Atrazine and 2,4-D inhibited absorption of CO2 at a steady rate. EPTC caused a delayed inhibition of CO2 uptake. DCPA, CDAA, CDEC, and NPA did not affect gas exchange significantly. Monuron applied as a spray depressed CO2 uptake somewhat faster than the soil-applied herbicide. Very rapid inhibition of CO2 uptake was observed after spray application of 2,4-D or EPTC. Atrazine affected gas exchange similarly when applied as a spray or incorporated in the soil. DCPA, applied as a spray, did not affect absorption of CO2 significantly. Possible reasons for differences in CO2 uptake after spray and soil-application of certain herbicides are discussed. Inert ingredients of EPTC applied as sprays at a concentration of 4000 p.p.m. greatly reduced CO2 absorption 3 days after treatment. However, the rapid early depression of gas exchange was followed by recovery, with no obvious deleterious effects on growth up to 3 months after treatment. Some herbicides checked CO2 absorption without chlorophyll breakdown whereas others did not. Monuron completely inhibited CO2 uptake long before any changes in leaf color were evident. In contrast, depression of CO2 absorption by atrazine and 2,4-D rather closely paralleled development of toxicity symptoms, especially chlorosis. These observations suggested that some herbicides such as monuron affected the photosynthetic mechanism more directly than others such as atrazine, 2,4-D, and EPTC.

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