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Coupling of iron and dissolved organic matter in lakes–selective retention of different size fractions
Riise, Gunnhild; Haaland, Ståle Leif; Xiao, Yihua (Springer, 2023)Increasing concentration of iron (Fe) is observed in many boreal lakes, such as for the present study in Oslo Østmark, SE-Norway (1983–2018). As Fe-regulating processes are complex and dynamic, the link between mobilizing ... -
Carbon budget and molecular structure of natural organic matter in bank infiltrated groundwater
Jylhä‐Ollila, Maija; Laine‐Kaulio, Hanne; Schilder, Jos; Niinikoski‐Fuβwinkel, Paula; Kekäläinen, Timo; Jänis, Janne; Koivusalo, Harri (Wiley-Blackwell, 2021)Managed aquifer recharge (MAR) provides means to remove natural organic matter (NOM) from surface waters. Recent studies have explored the degree of NOM removal in groundwater. In this study, we further elaborate the NOM ... -
Temporal perspective of humification of organic matter
Koivula, Niina (University of Jyväskylä, 2004)Humustumisprosessissa kuollut orgaaninen aines hajoaa maaperässä. Osa tästä orgaanisesta aineesta mineralisoituu hiilidioksidiksi ja vedeksi lopun jäädessä maaperään ja muodostaa humusaineita, joita ovat humushappo, ... -
Increasing concentration of polyunsaturated fatty acids in browning boreal lakes is driven by nuisance alga Gonyostomum
Strandberg, Ursula; Hiltunen, Minna; Rissanen, Ninni; Taipale, Sami; Akkanen, Jarkko; Kankaala, Paula (Ecological Society of America, 2020)Elevated concentrations of dissolved organic carbon (DOC) promote browning of lakes, which alters the physicochemical properties of water and ecosystem functioning. However, browning‐induced changes in basal production of ... -
Production of ethyl lactate by activated carbon-supported Sn and Zn oxide catalysts utilizing lignocellulosic side streams
Kupila, Riikka; Lappalainen, Katja; Hu, Tao; Heponiemi, Anne; Bergna, Davide; Lassi, Ulla (Elsevier, 2021)In this study, activated carbon-supported Sn and Zn oxide catalysts were prepared from hydrolysis lignin and used for the conversion of model solutions of trioses, hexoses, and lignocellulosic biomass hydrolysates to ethyl ...