Hanna Runtti

Heavy Metal Ion Removal Using BioBased Materials

Varsha Srivastava, Sidra Iftekhar, Hanna Runtti, Amina Tariq et autres

Biomass-based waste materials, such as cellulose, lignin, pectin, and algal biomass, are potential feedstocks for developing efficient adsorbents for removing heavy metal ions. However, the composition of biomass waste varies significantly, and the resultant adsorbent materials also differ in properties and adsorption …

The improved regeneration performance of a Ca–Ti modified alkali-activated adsorbent material after use

Minja Korhonen, A.T. Pikkarainen, Tao Hu, Sari Tuomikoski et autres

Ca-Ti modified alkali-activated material was successfully used by 240 Cu recovery cycles with only 0.19% efficiency loss per cycle, and it was successfully compared to commercial materials.

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Alkali-activated materials from steel industry slags: optimization of prewashing and its effect on zinc adsorption and regeneration

Matti Korhonen, Paul Inge Dahl, Teija Kangas, Sari Tuomikoski et autres

Interest in alkali-activated materials (AAMs) has increased because of their effectiveness as adsorbents and their low cost.

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Novel Ca–Ti-modified alkali-activated metakaolin adsorbent: multimetal adsorption and regeneration mechanisms

Matti Korhonen, A.T. Pikkarainen, Tao Hu, Varsha Srivastava et autres

Column-casted Ca–Ti-modified alkali-activated material showed high adsorption capacity and improved regeneration ability with citrate.

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The effect of phosphoric acid on the properties of activated carbons made from Myrtus communis leaves: Textural characteristics, surface chemistry, and capacity to adsorb methyl orange

Hamza Megherbi, Hanna Runtti, Sari Tuomikoski, Anne Heponiemi et autres

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Alkali-activated materials containing mine tailings and zeolite for seepage water treatment in a closed nickel mine

Hanna Runtti, I. Lancellotti, Cristina Leonelli, Ulla M. Lassi

Abstract In the present study, alkali-activated materials were assessed as adsorbents for mine water treatment. The composition of alkali-activated materials, involving mixtures of metakaolin, blast-furnace slag, mine tailings, and zeolite, was optimized based on their leaching behavior and adsorption performance. The most …

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Primary and digested sludge-derived char as a Cd sorbent: feasibility of local utilisation

Ida Sylwan, Davide Bergna, Hanna Runtti, Lena Johansson Westholm et autres

Cadmium (Cd) is a highly toxic metal, occurring in municipal wastewater and stormwater as well as in wastewater from various industries. Char derived from the pyrolysis of municipal sewage sludge has the potential to be a low-cost sorption media for the removal …

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A comprehensive review of the reclamation of resources from spent lithium-ion batteries

Varsha Srivastava, Venla Rantala, Parisa Mehdipour, Toni Kauppinen et autres

Due to the increased application of lithium-ion batteries (LIBs), the number of spent LIBs has increased significantly in recent years, which has resulted in new waste management challenges for the recycling industry. The recycling of spent LIBs has gained enormous interest globally, …

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Zn(II) removal from wastewater by an alkali-activated material prepared from steel industry slags: optimization and modelling of a fixed-bed process

Mikael Manninen, Teija Kangas, Tao Hu, Toni Varila et autres

Removal of dissolved zinc (Zn) from water by a novel alkali-activated material (AAM) prepared from steel industry slags in a fixed-bed column was investigated. Design of experiments was used to find the optimum operation parameters [flow rate (Q), adsorbent mass, (mads), and …

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Removal of Ammonium Ions from Aqueous Solutions Using Alkali-Activated Analcime as Sorbent

Hanna Runtti, Elavarasi Sundhararasu, Janne Pesonen, Sari Tuomikoski et autres

Five alkali-activated analcime (ANA) sorbents (ANA-MK 1, ANA 2, ANA 3, ANA-MK 4, and ANA-MK 5) were developed for ammonium (NH4+) ion removal. Acid treatment and calcination were used as pre-treatments for analcime, and metakaolin (MK) was used as a blending agent …

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List of contributors

Sumaiya Akhlaq, Awais Ashraf, Muhammad Bilal Asif, Nuha Awang et autres

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Recovery of critical raw materials from battery industry process and wastewaters

Varsha Srivastava, Hanna Runtti, Sari Tuomikoski, Anne Heponiemi et autres

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