scholarly journals A Method of Finding HCT Roundwood Corridors for Reduction of GHG Emissions and Fuel Costs in Sweden

Forests ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 220
Author(s):  
Christian Höök ◽  
Victor Asmoarp ◽  
Björn Edlund ◽  
Dan Bergström
Keyword(s):  
Large Scale ◽  
Forest Biomass ◽  
Ghg Emissions ◽  
High Capacity ◽  
Distance Information ◽  
Forest Fuels ◽  
Potential Measure ◽  
Truck Transport ◽  
National Road ◽  
Fuel Costs

Background and Objectives: in Sweden during 2016, 71.6 million metric tonnes (t) of forest biomass (roundwood and forest fuels) were transported by truck, corresponding to approximately 15% of all national goods truck transport. To reduce the environmental impact of forest product transports and meet Swedish climate goals, the use of 90 t high-capacity transport (HCT) trucks on well-chosen routes has been identified as one potential measure. The objective was, therefore, to develop a method of finding the geographical occurrence of potential roundwood HCT corridors for 90 t trucks, as well as estimating their environmental and economic potential in comparison to the conventional 74 t-truck transport system for Swedish conditions. Materials and Methods: the study used data from actual roundwood transports during 2016 along with a digitalization of the Swedish road network (National Road Database, SNVDB) for corridor identification. In four steps we: 1) identified supportive networks, 2) identified flow supporting corridors on the technically supportive networks, 3) applied a calibrated route finder (CRF) to route relevant transports both directly from the landing to the receiver and via the corridor, gathering drive distance information and, for example, 4) analyzed transports fuel consumption and potential CO2 savings. Results: Results showed there was annual potential for 25 HCT corridors throughout Sweden to employ 20 90 t trucks to transport 2.5 Mt of roundwood, reducing up to 5500 t of CO2 and €3.1 M in fuel costs. Conclusions: the study reinforces previous studies’ findings concerning economic and environmental potential using HCT vehicles and identifies terminal establishment and management costs as a bottleneck in successful large-scale implementation of HCT corridors.

Predictability of fouling-potential of raw water for ultrafiltration membranes

2011 ◽  
Vol 11 (4) ◽  
pp. 481-489
Author(s):  
S. Krause ◽  
A. Obermayer
Keyword(s):  
Water Quality ◽  
Membrane Fouling ◽  
Large Scale ◽  
High Capacity ◽  
Raw Water ◽  
Ultrafiltration Membranes ◽  
Small Water ◽  
Lab Experiments ◽  
Flux Decline ◽  
Public Drinking Water

The public drinking water supply of southern Germany is characterized by a rather decentralized network. Due to the hydrogeological setting in these parts of Germany many of the small water works with an average capacity of 50 m3/h have to treat raw water extracted from karstic or cliffy aquifers. These raw waters tend to be contaminated with particles and pathogens acquired during snowmelt or after strong rainfalls. In the last decade ultrafiltration has become the technology of choice for the removal of the aforementioned contaminants. Flux decline caused by unanticipated membrane fouling is the main limitation for the application of ultrafiltration membranes. This paper describes how membrane fouling phenomena can be predicted by using a statistical approach based on data from large scale filtration systems in combination with field and lab experiments on raw water quality and membrane performance. The data defines water quality and respective fouling phenomena both in technical scale filtration plants and in lab experiments of eleven different raw waters. The method described here is more economically feasible for small water works when compared to typical pilot experiments that are used for high capacity water works.

scholarly journals Greenhouse Gas Balance of Sphagnum Farming on Highly Decomposed Peat at Former Peat Extraction Sites

Ecosystems ◽  
2021 ◽  
Author(s):  
Jan Oestmann ◽  
Bärbel Tiemeyer ◽  
Dominik Düvel ◽  
Amanda Grobe ◽  
Ullrich Dettmann
Keyword(s):  
Water Management ◽  
Drip Irrigation ◽  
Large Scale ◽  
Ghg Emissions ◽  
The Other ◽  
Ghg Mitigation ◽  
Greenhouse Gas Balance ◽  
Peat Extraction ◽  
Water Tables ◽  
Mitigation Potentials

AbstractFor two years, we quantified the exchange of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) at two different large-scale Sphagnum farming sites. At both, peat extraction left a shallow layer of highly decomposed peat and low hydraulic conductivities. One site was characterized by preceding multi-annual inundation and irrigated by ditches, while the other one was inoculated directly after peat extraction and irrigated by ditches and drip irrigation. Further, GHG emissions from an irrigation polder and the effect of harvesting Sphagnum donor material at a near-natural reference site were determined. GHG mitigation potentials lag behind the results of less decomposed sites, although our results were also affected by the extraordinary hot and dry summer 2018. CO2 exchanges ranged between -0.6 and 2.2 t CO2-C ha−1 y−1 and were mainly influenced by low water table depths. CH4 emissions were low with the exception of plots with higher Eriophorum covers, while fluctuating water tables and poorly developing plant covers led to considerable N2O emissions at the ditch irrigation site. The removal of the upper vegetation at the near-natural site resulted in increased CH4 emissions and, on average, lowered CO2 emissions. Overall, best plant growth and lowest GHG emissions were measured at the previously inundated site. At the other site, drip irrigation provided more favourable conditions than ditch irrigation. The size of the area needed for water management (ditches, polders) strongly affected the areal GHG balances. We conclude that Sphagnum farming on highly decomposed peat is possible but requires elaborate water management.

scholarly journals A germanium and zinc chalcogenide as an anode for a high-capacity and long cycle life lithium battery

RSC Advances ◽  
2019 ◽  
Vol 9 (60) ◽  
pp. 35045-35049
Author(s):  
Xu Chen ◽  
Jian Zhou ◽  
Jiarui Li ◽  
Haiyan Luo ◽  
Lin Mei ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Lithium Battery ◽  
Large Scale ◽  
High Capacity ◽  
Lithium Ion ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Long Cycle Life ◽  
Zinc Chalcogenide

High-performance lithium ion batteries are ideal energy storage devices for both grid-scale and large-scale applications.

Large-scale and low cost synthesis of graphene as high capacity anode materials for lithium-ion batteries

Carbon ◽  
2013 ◽  
Vol 64 ◽  
pp. 158-169 ◽  
Author(s):  
Shuangqiang Chen ◽  
Peite Bao ◽  
Linda Xiao ◽  
Guoxiu Wang
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Large Scale ◽  
Low Cost ◽  
High Capacity ◽  
Lithium Ion

scholarly journals Road Freight Transport Electrification Potential by Using Battery Electric Trucks in Finland and Switzerland

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 823
Author(s):  
Mehdi Jahangir Samet ◽  
Heikki Liimatainen ◽  
Oscar Patrick René van Vliet ◽  
Markus Pöllänen
Keyword(s):  
Large Scale ◽  
Ghg Emissions ◽  
Limited Range ◽  
Freight Transport ◽  
Heavy Duty ◽  
Range Extender ◽  
Percentage Points ◽  
Road Freight ◽  
Road Systems ◽  
Gross Vehicle Weight

Medium and heavy-duty battery electric trucks (BETs) may play a key role in mitigating greenhouse gas (GHG) emissions from road freight transport. However, technological challenges such as limited range and cargo carrying capacity as well as the required charging time need to be efficiently addressed before the large-scale adoption of BETs. In this study, we apply a geospatial data analysis approach by using a battery electric vehicle potential (BEVPO) model with the datasets of road freight transport surveys for analyzing the potential of large-scale BET adoption in Finland and Switzerland for trucks with gross vehicle weight (GVW) of over 3.5 t. Our results show that trucks with payload capacities up to 30 t have the most potential for electrification by relying on the currently available battery and plug-in charging technology, with 93% (55% tkm) and 89% (84% tkm) trip coverage in Finland and Switzerland, respectively. Electric road systems (ERSs) would be essential for covering 51% trips (41% tkm) of heavy-duty trucks heavier than 30 t in Finland. Furthermore, range-extender technology could improve the trip electrification potential by 3–10 percentage points (4–12 percentage points of tkm).

Silicon/graphene based nanocomposite anode: large-scale production and stable high capacity for lithium ion batteries

2014 ◽  
Vol 2 (24) ◽  
pp. 9118-9125 ◽  
Author(s):  
Renzong Hu ◽  
Wei Sun ◽  
Yulong Chen ◽  
Meiqin Zeng ◽  
Min Zhu
Keyword(s):  
Lithium Ion Batteries ◽  
Large Scale ◽  
High Capacity ◽  
Lithium Ion ◽  
Scale Production ◽  
Large Scale Production ◽  
Graphene Nanocomposite

Plasma-assisted milled Si/graphene nanocomposite anode delivers high capacity and good cycleability in half and full cells using a LiMn2O4 cathode.

Carbon Footprint Assessment of a Large-Scale Pig Production System in Northern China: A Case Study

2018 ◽  
Vol 61 (3) ◽  
pp. 1121-1131 ◽  
Author(s):  
Yuanqing Zhou ◽  
Hongmin Dong ◽  
Hongwei Xin ◽  
Zhiping Zhu ◽  
Wenqiang Huang ◽  
...  
Keyword(s):  
Large Scale ◽  
Ghg Emissions ◽  
Northern China ◽  
Manure Management ◽  
Traditional Practice ◽  
Enteric Fermentation ◽  
Pig Production ◽  
Transport Distance ◽  
Feed Production ◽  
Crop Planting

Abstract. China raises 50% of global live pigs. However, few studies on the carbon footprint (CF) of large-scale pig production based on China’s actual production conditions have been carried out. In this study, life cycle assessment (LCA) and actual production data of a typical large-scale pig farm in northern China were used to assess the greenhouse gas (GHG) emissions or CF associated with the whole process of pig production, including feed production (crop planting, feed processing, and transportation), enteric fermentation, manure management, and energy consumption. The results showed a CF of 3.39 kg CO2-eq per kg of live market pig and relative contributions of 55%, 28%, 13%, and 4% to the total CF by feed production, manure management, farm energy consumption, and enteric fermentation, respectively. Crop planting accounted for 66% of the feed production CF, while feed processing and transportation accounted for the remaining 34%. Long-distance transport of semi-raw feed materials caused by planting-feeding separation and over-fertilization in feed crop planting were two main reasons for the largest contribution of GHG emissions from feed production to the total CF. The CF from nitrogen fertilizer application accounted for 33% to 44% of crop planting and contributed to 16% of the total CF. The CF from the transport of feed ingredients accounted for 17% of the total CF. If the amount of nitrogen fertilizer used for producing the main feed ingredients is reduced from 209 kg hm-2 (for corn) and 216 kg hm-2 (for wheat) to 140 kg hm-2 (corn) and 180 kg hm-2 (wheat), the total CF would be reduced by 7%. If the transport distance for feed materials decreased from 325 to 493 km to 30 km, along with reducing the number of empty vehicles for transport, the total CF would be reduced by 18%. The combined CF mitigation potential for over-fertilization and transport distance is 26%. In addition, the use of pit storage, anaerobic digestion, and lagoon for manure management can reduce GHG emissions from manure management by 76% as compared to the traditional practice of pit storage and lagoon. This case study reveals the impact of planting-feeding separation and over-fertilization on the CF of the pig supply chain in China. The manure management practice of pit storage, anaerobic digestion, and lagoon is much more conductive to reducing the CF as compared to the traditional practice of pit storage and lagoon. Keywords: Greenhouse gas, Life cycle assessment, Mitigation, Pig.

Making the world’s longest subsea tunnel sustainable

2018 ◽  
Author(s):  
Ketil Søyland ◽  
Christer Wolden ◽  
Christopher Garmann ◽  
Debbie Harrison
Keyword(s):  
Greenhouse Gas ◽  
Carbon Footprint ◽  
Large Scale ◽  
Ghg Emissions ◽  
Infrastructure Projects ◽  
Subsea Tunnel ◽  
Engineering Practices

<p>How can large-scale infrastructure projects be sustainable? The purpose of this paper is to discuss how engineering practices were changed in order to reduce the carbon footprint of the E39 Rogfast project, the world’s longest roadway sub-sea tunnel. The project will generate greenhouse gas (GHG)-emissions exceeding 1% of Norway’s total annual GHG-emissions. The paper covers the project process, including some of the challenges to be overcome.</p>

scholarly journals Large-scale bioenergy from additional harvest of forest biomass is neither sustainable nor greenhouse gas neutral

GCB Bioenergy ◽  
2012 ◽  
Vol 4 (6) ◽  
pp. 611-616 ◽  
Author(s):  
Ernst-Detlef Schulze ◽  
Christian Körner ◽  
Beverly E. Law ◽  
Helmut Haberl ◽  
Sebastiaan Luyssaert
Keyword(s):  
Greenhouse Gas ◽  
Large Scale ◽  
Forest Biomass
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