Carbon Sequestration From Waste via Conversion to Charcoal: Equipment for a Small Scale Operation

2010 ◽  
Author(s):  
Subodh Chandra Gupta ◽  
Arnoud Struyk ◽  
Denis Gilbert
Keyword(s):  
Carbon Sequestration ◽  
Small Scale ◽  
Small Scale Operation

Advanced package CHP unit for small-scale operation

1991 ◽  
Vol 5 (3) ◽  
pp. 135
Author(s):  
Michael H. Woodworth ◽  
Julian P. Packer
Keyword(s):  
Small Scale ◽  
Small Scale Operation

scholarly journals Carbon stocks and fluxes in reforestated sites of Durango, Mexico

2016 ◽  
Vol 11 (2) ◽  
pp. 15-34 ◽  
Author(s):  
José de Jesús Návar Cháidez ◽  
Nicolás González ◽  
José Graciano
Keyword(s):  
Carbon Sequestration ◽  
Goodness Of Fit ◽  
Carbon Stocks ◽  
Small Scale ◽  
Environmental Services ◽  
Model Parameters ◽  
Class Model ◽  
Fit Statistics ◽  
Individual Trees ◽  
Two Hybrid

In this research, we present predictions of carbon sequestration by pines growing in reforested sites of Durango, Mexico. Four methodologies to predict carbon stocks in standing aboveground biomass were tested. Two models at the whole stand scale and two hybrid models between whole stand, stand class, and individual trees were fitted. A chronosequence of 23 small-scale reforested sites and stem analysis conducted on 60 trees were used to fit model parameters and estimate goodness of fit statistics. A stand class model produced a better fit to measure carbon stocks in aboveground standing biomass. 3 Reforested sites with native pine species are sequestering carbon at differential rates partially explained by density, species, micro site, climate and age of pines. Society is benefiting from the environmental services provided by carbon sequestration and conservation of native coniferous forests.

scholarly journals An economic evaluation on welfare distribution and carbon sequestration under competitive pyrolysis technologies

2020 ◽  
pp. 014459871990027
Author(s):  
Xiaoyu Gong ◽  
Chih-Chun Kung ◽  
Liguo Zhang
Keyword(s):  
Carbon Sequestration ◽  
Agricultural Sector ◽  
Influential Factors ◽  
Decision Makers ◽  
Small Scale ◽  
Renewable Electricity ◽  
Energy Sustainability ◽  
Lifecycle Assessment ◽  
Intermediate Pyrolysis ◽  
Welfare Distribution

Pyrolysis and gasification are considered as a means of producing renewable energy and improving energy sustainability, which has become attractive renewable technologies to many countries. Unlike other studies that are conducted in small scale, this study aims to aggregate the economic and environmental effects such as agricultural benefits, energy sale, and carbon sequestration to provide more detailed information to decision-makers before these projects are widely employed. This study first employs a lifecycle assessment to investigate the feasibility, profitability, and emission reduction of four major pyrolysis and gasification technologies using crop residuals, and then conducts a sensitive analysis to examine the most influential factors. The results indicate that the intermediate pyrolysis with rice straw and slow pyrolysis from corn stover could offset the carbon dioxide the most. However, the pyrolysis value is also sensitive to production of the feedstock used. Value adding of stover-based biochar under fast pyrolysis improves profitability but other technologies do not have such patterns. Additionally, while gasification can generate considerable amount of renewable electricity, it yields almost zero percent of biochar that can be used as a soil amendment, and thus its contribution to agricultural sector is trivial.

scholarly journals Evaluation of a constructed manual drilling machine for small scale operation

2021 ◽  
Vol 1107 (1) ◽  
pp. 012194
Author(s):  
S.O. Banjo ◽  
O.O. Joseph ◽  
O.S.I. Fayomi ◽  
M. Udor ◽  
J.O. Dirisu ◽  
...  
Keyword(s):  
Small Scale ◽  
Drilling Machine ◽  
Small Scale Operation

scholarly journals Tasting the Bedrock

2010 ◽  
Vol 2 (2) ◽  
Author(s):  
John Elder
Keyword(s):  
Sensory Analysis ◽  
Personal Narrative ◽  
Small Scale ◽  
Wide Range ◽  
Small Scale Operation

This article begins with a personal narrative of the author’s involvement in sugaring before moving to an account of collaboration with local experts in maple production and testing, "sensory analysis," and geology to explore the correlation between the taste of syrup from particular sugarbushes and such factors as the bedrock on those sites. This high-spirited and stimulating investigation was inspired in part by collaborator Amy Trubek’s application of the concept of terroir to a wide range of foods beyond wine. Although it at one point alarmed Vermont's maple industry, it has ultimately led to a productive dialogue, to which authorities from the state's Agency of Agriculture as well as maple researchers and producers in Quebec have all contributed. Grounded in a small-scale operation in Starksboro, Vermont, the article ultimately points toward both innovations and marketing opportunities within a much wider circle.

scholarly journals Carbon Sequestration in Mixed Deciduous Forests: The Influence of Tree Size and Species Composition Derived from Model Experiments

Forests ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 726
Author(s):  
Anne Holtmann ◽  
Andreas Huth ◽  
Felix Pohl ◽  
Corinna Rebmann ◽  
Rico Fischer
Keyword(s):  
Carbon Sequestration ◽  
Species Composition ◽  
Stand Structure ◽  
Deciduous Forest ◽  
Ecosystem Respiration ◽  
Carbon Fluxes ◽  
Tree Size ◽  
Small Scale ◽  
Forest Stand Structure ◽  
Large Trees

Forests play an important role in climate regulation due to carbon sequestration. However, a deeper understanding of forest carbon flux dynamics is often missing due to a lack of information about forest structure and species composition, especially for non-even-aged and species-mixed forests. In this study, we integrated field inventory data of a species-mixed deciduous forest in Germany into an individual-based forest model to investigate daily carbon fluxes and to examine the role of tree size and species composition for stand productivity. This approach enables to reproduce daily carbon fluxes derived from eddy covariance measurements (R2 of 0.82 for gross primary productivity and 0.77 for ecosystem respiration). While medium-sized trees (stem diameter 30–60 cm) account for the largest share (66%) of total productivity at the study site, small (0–30 cm) and large trees (>60 cm) contribute less with 8.3% and 25.5% respectively. Simulation experiments indicate that vertical stand structure and shading influence forest productivity more than species composition. Hence, it is important to incorporate small-scale information about forest stand structure into modelling studies to decrease uncertainties of carbon dynamic predictions.

scholarly journals Application of Google earth in carbon assessment and monitoring in agroforestry: a study from Ratanpur, Nepal

2021 ◽  
Vol 6 (6) ◽  
pp. 201-210
Author(s):  
Ramasheshwar Mandal ◽  
Srijana Karki ◽  
Bishnu Hari Pandit
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Carbon Stock ◽  
Google Earth ◽  
Total Carbon ◽  
Small Scale ◽  
Carbon Sequestration Potential ◽  
Sequestration Potential ◽  
Significant Difference ◽  
Assessment And Monitoring

The carbon assessment and monitoring in small scale forests like agroforests are difficult tasks but it creates enormous opportunity as carbon credit. This study aims to assess carbon sequestration potential in agroforestry including soil carbon using google earth imageries. Agroforestry of Ratanpur village in Tanahun district Nepal was selected as the study site. Total agroforests of 19 farmers were selected as the experimental and no agroforests area of 4 farmers were selected as the control site. The high resolution imageries of 2020 and 2015 were acquired from Google earth pro. The digitization was done to classify the image into agriculture, agroforestry, natural trees, settlement areas and others. Total enumeration was done to measure the diameter and height of the plants (tree species) planted in the agro-forest. Moreover, total 69 soil samples were collected from 0-10, 10-20 and 20-30 cm depth. The biomass was calculated using Chave et al. equation while soil carbon was analyzed using Walkley Black method. The biomass was converted into carbon which was used to calculate mean annual carbon increment. The result showed the highest carbon stock was 17.6 kg/ stand of Paulownia tomentosa. Total carbon sequestration potential was 2057.689 kg and its monetary value was US$ 30.863. The mean soil carbon stock of agro-forest was higher 52.92 ton/ha than this of 50.3 ton/ha in agriculture site. The map showed it was 7.63 ha agroforest in map of 2020. The overall accuracy of map of 2015 was 90.91% with Kappa coefficient 0.86 but these values were 80.65% and 0.74 respectively of map of 2020. One-way ANOVA and Post hoc test showed that there was significant difference in species wise carbon stock per stand at 95% confidence level. The research will be useful to understand the carbon stock in agroforestry practices.

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