Performance analysis of a co-gasifier for organic waste in agriculture

Abstract

Purpose Riparian zones are identified as mitigation areas of agricultural pollutants to river ecosystems. However, the mitigation mechanisms of these pollutants remain unclear mainly on the effects of different types of riparian vegetation and its organic matter content in the pollutants removal process. This study aims to assess the content of organic matter in soils composed of woody vegetation and grass and its effects on four pesticides adsorption. Adsorption studies were conducted in soil collected in riparian vegetation areas composed of grass and trees under the influence of an agricultural area. Methods The analyses were performed in 21 shakers containing 100 g soil and a L of water previously contaminated with pesticide that were stirred for 30, 60, 120, 240, 360, 720, and 1440 min. A study was made of maximum adsorption capacity using the time 360 min and the concentrations of 5, 20, 40, and 50 μg L −1. Results The soils of woody vegetation areas had a higher concentration of organic matter as compared with grass areas, and time 360 min achieved the highest adsorption capacity with minimum values of 84% adsorption for the area of land made up of trees and 67% for grass areas. The soils of woody vegetation areas had a higher concentration of organic matter as compared with grass areas, time 360 min. Conclusion The best adsorption capacity was obtained with minimal adsorption amounts of 84% to the area of soil composed of 67% for trees and grass areas.

Gasification of non-woody biomass: A literature review

“…Alternatively, this may be achieved by mixing the non-woody materials with other higher quality solid fuels. By mixing with the solid fuel, not only is the pellet fuel quality upgraded, but this also reduces various technical problems related to the gasification of nonwoody biomass [33][34][35][36][37][38][39][40][41][42]. Research has shown that co-gasification has two "synergistic" beneficial effects namely tar cracking and catalytic gasification.…”

Performance Evaluation of Throatless Gasifier Using Pine Needles as a Feedstock for Power Generation

“…The flue loss with pine needles was measured 19%, whereas the fluidized bed gasifier, forrice husk, had 30.85% heat loss to the environment (Ramírez et al, 2007). Gasification efficiency has been measured to be 81%, which is 13.6% higher than the experimental test conducted on rice husk (Ataei et al, 2012) and 6.22% more than wood gasification on the same model of gasifier which we used for pine needles. On subsequent test on pine needles, gasification efficiency was found to be decreased with an increase in gasification temperature, while another test on results and discussion Generator set 57 43 ---Unauthenticated Download Date | 5/10/18 3:05 PM Alok DHAUNDIYAL, Pramod Chandra TEWARI wood showed that gasification efficiency decreases more rapidly than in pine needles for the same model and that is shown in Figure 6(a).…”

Utilization of Crop Residue for Power Generation: The Case of Ukraine

“…However, a number of technological problems and high investment costs hinder their commercial development [33]. Their electric efficiency ranges from 10% to 33% [33][34][35][36]. Their energy conversion factor ranges from 0.5 to 0.8 [34,37].…”

“…Their electric efficiency ranges from 10% to 33% [33][34][35][36]. Their energy conversion factor ranges from 0.5 to 0.8 [34,37]. According to experts' recommendations, gasification based crop residue technologies are preferable if their electrical power production is less than 2 MW [38].…”

“…The efficiency of ICE can reach 40%. The same value for fuel cells is up to 50% [33][34][35][36]. Due to relatively high production costs, it is fuel cells can be used for vehicle fuel, but are unprofitable for power generation.…”