Adsorption of uranium onto amidoxime-group mesoporous biomass carbon: kinetics, isotherm and thermodynamics

2022 ◽  
Author(s):  
Yan Li ◽  
Ying Dai ◽  
Zhi Gao ◽  
Zhuyao Li ◽  
Feiqiang He ◽  
...  
Keyword(s):  
Biomass Carbon ◽  
Amidoxime Group

scholarly journals Assessment of Carbon Density in Natural Mountain Forest Ecosystems at Northwest China

2021 ◽  
Vol 18 (4) ◽  
pp. 2098
Author(s):  
Li Dai ◽  
Yufang Zhang ◽  
Lei Wang ◽  
Shuanli Zheng ◽  
Wenqiang Xu
Keyword(s):  
Carbon Content ◽  
Carbon Storage ◽  
Forest Ecosystems ◽  
Soil Layer ◽  
Northwest China ◽  
Biomass Carbon ◽  
Forest Age ◽  
Carbon Density ◽  
Old Growth Forest ◽  
Content Ratio

The natural mountain forests in northwest China are recognized as a substantial carbon pool and play an important role in local fragile ecosystems. This study used inventory data and detailed field measurements covering different forest age groups (young, middle-aged, near-mature, mature, old-growth forest), structure of forest (tree, herb, litter and soil layer) and trees (leaves, branches, trunks and root) to estimate biomass, carbon content ratio, carbon density and carbon storage in Altai forest ecosystems. The results showed that the average biomass of the Altai Mountains forest ecosystems was 126.67 t·hm−2, and the descending order of the value was tree layer (120.84 t·hm−2) > herb layer (4.22 t·hm−2) > litter layer (1.61 t·hm−2). Among the tree parts, trunks, roots, leaves and branches accounted for 50%, 22%, 16% and 12% of the total tree biomass, respectively. The average carbon content ratio was 0.49 (range: 0.41–0.52). The average carbon density of forest ecosystems was 205.72 t·hm−2, and the carbon storage of the forest ecosystems was 131.35 Tg (standard deviation: 31.01) inside study area. Soil had the highest carbon storage (65.98%), followed by tree (32.81%), herb (0.78%) and litter (0.43%) layers. Forest age has significant effect on biomass, carbon content ratio, carbon density and carbon storage. The carbon density of forest ecosystems in study area was spatially distributed higher in the south and lower in north, which is influenced by climate, topography, soil types and dominant tree species.

scholarly journals Recent advances of biomass carbon dots on syntheses, characterization, luminescence mechanism, and sensing applications

Nano Select ◽  
2021 ◽  
Author(s):  
Ying Lou ◽  
Xinyu Hao ◽  
Lei Liao ◽  
Kaiyou Zhang ◽  
Shuoping Chen ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Biomass Carbon ◽  
Sensing Applications ◽  
Recent Advances

Sulfur-doped biomass carbon as anode for high temperature potassium ion full cells

2021 ◽  
Vol 374 ◽  
pp. 137920
Author(s):  
Pengfei Wang ◽  
Zhe Gong ◽  
Ke Ye ◽  
Yinyi Gao ◽  
Kai Zhu ◽  
...  
Keyword(s):  
High Temperature ◽  
Potassium Ion ◽  
Biomass Carbon

scholarly journals Potential of Alnus acuminata based agroforestry for carbon sequestration and other ecosystem services in Rwanda

2021 ◽  
Author(s):  
Athanase R. Cyamweshi ◽  
Shem Kuyah ◽  
Athanase Mukuralinda ◽  
Catherine W. Muthuri
Keyword(s):  
Ecosystem Services ◽  
Carbon Sequestration ◽  
Soil Fertility ◽  
Tree Age ◽  
Average Height ◽  
Total Biomass ◽  
Biomass Carbon ◽  
Alnus Acuminata ◽  
Sequestration Potential ◽  
Old Trees

AbstractAlnus acuminata Kunth. (alnus) is widely used in agroforestry systems across the globe and is believed to provide multiple ecosystem services; however, evidence is lacking in agroforestry literature to support the perceived benefits, particularly in Rwanda. To understand carbon sequestration potential and other benefits of alnus, a household survey, tree inventory and destructive sampling were conducted in north-western Rwanda. Over 75% of the respondents had alnus trees in their farms. The trees provide stakes for climbing beans, firewood and timber. They also improve soil fertility and control soil erosion. Farmers had between 130 and 161 alnus trees per hectare with an average height of 7.7 ± 0.59 m and diameter at breast height of 16.3 ± 1.39 cm. The largest biomass proportion was found in stems (70.5%) while branches and leaves stock about 16.5 and 13% of the total biomass, respectively. At farm level, aboveground biomass of alnus trees was estimated to be 27.2 ± 0.7 Mg ha−1 representing 13.6 Mg of carbon (C) per hectare. Biomass carbon increased with tree size, from 7.1 ± 0.2 Mg C ha−1 in 3 years old trees to 34.4 ± 2.2 Mg C ha−1 in 10 years old trees. The converse was observed with elevation; biomass carbon decreased with increasing elevation from 21.4 ± 1.29 Mg C ha−1 at low (2011–2110 m) to 9.6 ± 0.75 Mg C ha−1 in the high elevation (> 2510 m). In conclusion, alnus agroforestry significantly contributes to carbon sequestration, although the magnitude of these benefits varies with tree age and elevation. Planting alnus trees on farms can meet local needs for stakes for climbing beans, wood and soil fertility improvement, as well as the global need for regulation of climate change.

Co3O4 anchored on meshy biomass carbon derived from kelp for high‐performance ultracapacitor electrode

2021 ◽  
Vol 266 ◽  
pp. 124556
Author(s):  
Ruyi Zou ◽  
Lin Zhu ◽  
Lijun Yan ◽  
Bo Shao ◽  
Hui Cheng ◽  
...  
Keyword(s):  
High Performance ◽  
Biomass Carbon

Tuning the microwave absorption capacity of TiP2O7 by composited with biomass carbon

2020 ◽  
Vol 515 ◽  
pp. 145974 ◽  
Author(s):  
Qiang Huang ◽  
Chongzhuo Bao ◽  
Qiuyue Wang ◽  
Chengjun Dong ◽  
Hongtao Guan
Keyword(s):  
Microwave Absorption ◽  
Absorption Capacity ◽  
Biomass Carbon
Sign in / Sign up

Export Citation Format

Share Document