知識文件檢視

回前頁
知識類型

期刊

標題

Biogeochemical potential of biomass pyrolysis systems for limiting global warming to 1.5 °C

作者

C Werner, H-P Schmidt, D Gerten, W Lucht and C Kammann

名稱(期刊/節目)

Environmental Research Letters

期刊期數/節目集數

Volume 13, Number 4

出版單位

IOP Publishing

出版年月日

2018/4/17

原文摘要

Negative emission (NE) technologies are recognized to play an increasingly relevant role in strategies limiting mean global warming to 1.5 °C as specified in the Paris Agreement. The potentially significant contribution of pyrogenic carbon capture and storage (PyCCS) is, however, highly underrepresented in the discussion. In this study, we conduct the first quantitative assessment of the global potential of PyCCS as a NE technology based on biomass plantations. Using a process-based biosphere model, we calculate the land use change required to reach specific climate mitigation goals while observing biodiversity protection guardrails. We consider NE targets of 100–300 GtC following socioeconomic pathways consistent with a mean global warming of 1.5 °C as well as the option of additional carbon balancing required in case of failure or delay of decarbonization measures. The technological opportunities of PyCCS are represented by three tracks accounting for the sequestration of different pyrolysis products: biochar (as soil amendment), bio-oil (pumped into geological storages) and permanent-pyrogas (capture and storage of CO2 from gas combustion). In addition, we analyse how the gain in land induced by biochar-mediated yield increases on tropical cropland may reduce the pressure on land. Our results show that meeting the 1.5 °C goal through mitigation strategies including large-scale NE with plantation-based PyCCS may require conversion of natural vegetation to biomass plantations in the order of 133–3280 Mha globally, depending on the applied technology and the NE demand. Advancing towards additional bio-oil sequestration reduces land demand considerably by potentially up to 60%, while the benefits from yield increases account for another 3%–38% reduction (equalling 82–362 Mha). However, when mitigation commitments are increased by high balancing claims, even the most advanced PyCCS technologies and biochar-mediated co-benefits cannot compensate for delayed action towards phasing-out fossil fuels.

原文摘要簡述

負排放(NE)技術被知曉在《巴黎協定》作為指定平均全球暖化限制在1.5°C的策略中,扮演著越來越重要的角色。然而,熱解碳捕獲和儲存(PyCCS)的潛在重大貢獻在討論中並未得到充分體現。在這項研究中,我們針對一個基於生物質人工林的負排放技術進行首次PyCCS全球潛力的定量評估。當遵守生物多樣性保護護欄的同時,我們利用一個基本過程的生物圈模型,計算要求土地利用變化達到特定氣候減緩目標。我們認為,按照社會經濟途徑,與全球暖化平均1.5 ℃相一致,以及在脫碳措施失敗或延誤的情況下需要額外碳平衡的選擇,負排放目標是100-300 GtC。PyCCS的技術機會由三個途徑來說明,這些途徑說明了不同熱解產物的固存:生物炭(作為土壤改良劑),生物油(注入地質儲藏庫)和永久煙氣(捕獲和儲存來自氣體燃燒的CO2)。此外,我們分析了由生物炭間接在熱帶農田中增加產量引起的土地收益如何減輕土地壓力。

關鍵字

negative emission technologies, biochar, bio-oil, mitigation, 1.5 goal, PyCCS, geoengnieering

連結

https://doi.org/10.1088/1748-9326/aabb0e

最新上傳文件

MORE

上傳日期

標題/分類

2020/12/16

Soil Carbon and Nitrogen Dynamics in Two Agricultural Soils Amended with Manure‐Derived Biochar

生物炭效益
 
加值應用
 
農業應用
檢視
2020/12/16

Emission Reduction of 1,3‐Dichloropropene by Soil Amendment with Biochar

生物炭效益
 
加值應用
 
農業應用
檢視
2020/12/16

Biochar Impacts on Crop Productivity and Greenhouse Gas Emissions from an Andosol

生物炭效益
 
加值應用
 
農業應用
檢視