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Adsorption ofPhosphate in AqueousSolutions UsingManganese Dioxide Yunus FransiscusRestu Kartiko WidiGracia O. Aprilasti2018 год

Adsorption of Phosphate in Aqueous Solutions Using Manganese Dioxide
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Аннотация: Effort to remove phosphate from aquatic ecosystem is of great interest, not only for preventing algae bloom problem but also for recovering phosphate, as this is an essential material. Adsorption is considered as an effective method especially because the nutrient loaded adsorbent can be directly used for fertilizer. Therefore, this study investigated the potential use of manganese dioxide in natural form (pyrolusite) to adsorb phosphate in aqueous solutions. A series of batch experiments were done to elaborate the adsorption process of phosphate onto manganese dioxide. Several environmental conditions such as pH, temperature and ionic strength were applied in order to get a better understanding of the process mechanism. The results indicated that pH was obviously affected the adsorption process, meanwhile ionic strength did not play significant role. The adsorption of phosphate was higher at a lower pH and getting reduced as the pH increased. Similar to that, the percentage removal of phosphate was declined significantly in higher ionic strength, indicated that the interaction between phosphate and manganese dioxide was mainly controlled by electrostatic force. The adsorption isotherm data correlated better with Langmuir model rather than Freundlich model. The maximum adsorption capacity of manganese dioxide was 11.40 mg P/g. The kinetic data was very well fitted to pseudo second order equation suggested that chemical reaction involved in adsorption process. Moreover, thermodynamic data confirmed that phosphate adsorption onto manganese dioxide was an endothermic process.
Год издания: 2018
Авторы: Yunus Fransiscus, Restu Kartiko Widi, Gracia O. Aprilasti, Marta D. Yuharma
Издательство: Insight Society
Источник: International Journal on Advanced Science Engineering and Information Technology
Ключевые слова: Phosphorus and nutrient management, Adsorption and biosorption for pollutant removal, Constructed Wetlands for Wastewater Treatment
Другие ссылки: International Journal on Advanced Science Engineering and Information Technology (HTML)
Ubaya Repository (University of Surabaya) (PDF)
Ubaya Repository (University of Surabaya) (HTML)
Ubaya Repository (University of Surabaya) (PDF)
Ubaya Repository (University of Surabaya) (HTML)