Xiang, Yanlei; Cai, Lei; Guan, Yanwen; Liu, Wenbin; He, Tianzhi; Li, Juan (2019): Study on the biomass-based integrated gasification combined cycle with negative CO2 emissions under different temperatures and pressures. In Energy. DOI: 10.1016/j.energy.2019.05.011.

"The biomass gasification combined cycle and oxy-fuel combustion are integrated. The effect of gasification pressure and temperature on system performance is studied. The thermodynamic analysis of each subsystem is carried out to evaluate the system. The negative CO₂ emissions are achieved with a competitive efficiency."

LINK

Tanzer, Samantha Eleanor; Ramírez, Andrea (2019): When are negative emissions negative emissions? In: Energy Environ. Sci. 12 (4), S. 1210–1218. DOI: 10.1039/C8EE03338B.

"This paper highlights inconsistencies in negative emission accounting in recent NET literature, focusing on the influence of system boundary selection. A quantified step-by-step example provides a clear picture of the impact of system boundary choices on the estimated emissions of a NET system."

LINK

"With the money he made selling his last start-up to Google, Matt Rogers has been investing in companies that are trying to fight climate change. Mr. Rogers, one of the founders of the digital thermostat company Nest, has put millions of dollars into start-ups whose goal is to remove carbon dioxide from the atmosphere. Carbon-removal technology, as it is known, is something that scientists have said will probably be necessary to avert an extreme increase in global temperatures."

LINK

Mašek, O.; Buss, W.; Brownsort, P.; Rovere, M.; Tagliaferro, A.; Zhao, L. et al. (2019): Potassium doping increases biochar carbon sequestration potential by 45%, facilitating decoupling of carbon sequestration from soil improvement. In: Scientific reports 9 (1), S. 5514. DOI: 10.1038/s41598-019-41953-0.

"Negative emissions technologies offer an important tool to limit the global warming to <2 °C. Biochar is one of only a few such technologies, and the one at highest technology readiness level. Here we show that potassium as a low-concentration additive in biochar production can increase biochar’s carbon sequestration potential; by up to 45% in this study."

LINK