Browsing Materials, Energy, Water and Environmental Sciences by Author "Moirana, Ruth"
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Hydroxyapatite-activated seaweed biochar for enhanced remediation of fluoride contaminated soil at various pH ranges
Moirana, Ruth; Mkunda, Josephine; Machunda, Revocatus; Paradelo, Marcos; Mtei, Kelvin (Elsevier, 2022-12-10)This study investigated the defluoridation efficiency of hydroxyapatite-activated seaweed (Eucheuma Cottonii) biochar (HSB) at various soil pH ranges (3–11) while monitoring the impact of contact time (30 min - 2.5 h), ... -
The Influence of Fertilizers on the Behavior of Fluoride Fractions in the Alkaline Soil
Moirana, Ruth; Mkunda, Josephine; Perez, Marcos; Machunda, Revocatus; Mtei, Kelvin (Elsevier, 2021-08-23)It has been established that fluoride bioavailability in the soil is defined by the form which it exists rather than the amount of total fluoride. In the soil, fluoride exist in different fractions such as water soluble ... -
Remediation of Soils Contaminated by Fluoride Using a Fermentation Product of Seaweed (Eucheuma cottonii)
Moirana, Ruth; Mkunda, Josephine; Paradelo, Marcos; Machunda, Revocatus; Mtei, Kelvin (Hindawi, 2022-10-03)is study investigated the e cacy of fermented seaweed (Eucheuma cottonii) on the remediation of uoride-contaminated soil. e soil was amended with either 1.25, 3.0, or 5.0% (w/w) fermented seaweed (FSW), parallel with ... -
Remediation of soils contaminated with fluoride using seaweed-derived materials: case of slopes of mount Meru
Moirana, Ruth (NM-AIST, 2023-08)While exposure to low fluoride is essential for stronger bones and teeth, exposure to high concentration (> 3 mg/L/day) leads to hyperostosis and osteoporosis. This research evaluated the role of fertilizer application ... -
Trends towards Effective Analysis of Fluorinated Compounds Using Inductively Coupled Plasma Mass Spectrometry (ICP-MS)
Moirana, Ruth; Kivevele, Thomas; Mkunda, Josephine; Mtei, Kelvin; Machunda, Revocatus (Hindawi, 2021-02-03)Increased demand for monitoring and identification of novel and unknown fluorinated compounds (FCs) has demonstrated the need of sensitive fluorine-specific detectors for unknown FCs in both biological and environmental ...