Zhuang Y., Haderlein S. B., Hagemann N., Grafmüller J., Gogler K., Paul A., Fink F., Spahr S.
Activation of persulfate by biochar and iron: Role of biochar pyrolysis conditions and ash amendments.
Separation and Purification Technology, 374, 2025, Artikel 133634.

Hagemann N., Schmidt H.-P., Bucheli T., Grafmüller J., Vosswinkel S., Herdegen V., Meredith W., Uguna C. N., Snape C. E.
Proxies for use in biochar decay models: Hydropyrolysis, electric conductivity, and H/Corg molar ratio.
PLOS ONE, 20, (9), 2025, Artikel e0330206.

Grafmüller J., Schmidt H.-P., Kray D., Bucheli T., Mäurer H., Möllmer J., Peisert H., Hagemann N.
Biochar acidification increased sorption and reduced leaching of nitrate.
Journal of Environmental Management, 393, 2025, Artikel 127224.

Grafmüller J., Möllmer J., Muehe E. M., Kammann C. I., Kray D., Schmidt H.-P., Hagemann N.
Granulation compared to co-application of biochar plus mineral fertilizer and its impacts on crop growth and nutrient leaching.
Scientific Reports, 14, 2024, Artikel 16555.

Grafmüller J., Rathnayake Mudiyanselage D. C., Hagemann N., Bucheli T., Schmidt H.-P.
Biochars from chlorine-rich feedstock are low in polychlorinated dioxins, furans and biphenyls.
Journal of Analytical and Applied Pyrolysis, 183, 2024, Artikel 106746.

Hagemann N., Conte P., Leifeld J., Giger R., Bucheli T., Schmidt H.-P., Grafmüller J.
Impact of biomass ash content on biochar carbon speciation and stability.
In: EGU General Assembly 2023. 25 April, Hrsg. European Geosciences Union (EGU), Vienna (AT). 2023, 1.

Grafmüller J., Kray D., Kammann C., Mühe E. M., Schmidt H.-P., Hagemann N.
Granulated biochar-based NPK fertilizer and its impact on nutrient leaching, plant growth and soil-borne N2O emissions.
In: EGU General Assembly 2023. 23-28 April, Hrsg. European Geosciences Union (EGU), Vienna (AT). 2023.