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Full-Text Articles in Physical Sciences and Mathematics
Removal Of Arsenic (Iii) And Arsenic (V) From Aqueous Solution Via Common Sunflower Helianthus Annuus By Phytoremediation, Irving A. Vazquez Hurtado
Removal Of Arsenic (Iii) And Arsenic (V) From Aqueous Solution Via Common Sunflower Helianthus Annuus By Phytoremediation, Irving A. Vazquez Hurtado
Theses and Dissertations
Phytoremediation provides a cost-effective, non-invasive technique to remove contaminants from the soil and groundwater. Sunflowers are fast growing and have a showed effective at removing various pollutants from soil, including lead and other heavy metals. Health issues related to arsenic are mainly attributed to exposure of arsenite, whereas arsenate is much less toxic. The common sunflower Helianthus annuus was the species used to remove both arsenic (III) and As(V) ions from hydroponics solutions. In the present study sunflower seeds were germinated for a week, placed under the sun for a day and subsequently placed in a nutrient solution to aid …
Removal Of Arsenic (Iii) And Arsenic (V) From Aqueous Solution Via Solanum Lycopersicum Phytoremediation And Essential Nutrient Analysis, Grecia W. Garcia Salazar
Removal Of Arsenic (Iii) And Arsenic (V) From Aqueous Solution Via Solanum Lycopersicum Phytoremediation And Essential Nutrient Analysis, Grecia W. Garcia Salazar
Theses and Dissertations
ICP-OES was used to investigate the uptake of arsenic (V) and arsenic (III) from aqueous solution using tomato seedlings. The effect of arsenic on essential nutrient uptake by tomato was analyzed. The experiment was performed at three levels of arsenic: 1ppm, 2 ppm and 5 ppm [added as sodium arsenate (Na3AsO4) and arsenic trioxide (As2O3)], in nutrient solution. Plants remained in solution for two weeks. Arsenic accumulation depended on arsenic concentration in solution, when exposed to higher arsenic concentrations the plant uptake increased. The highest arsenic accumulation was found in roots, followed by stems and leaves in that order. Essential …
Engineered Porous Media For Groundwater Contaminant Remediation: Applications Of Nano-Tio2, Sheng Yin
Engineered Porous Media For Groundwater Contaminant Remediation: Applications Of Nano-Tio2, Sheng Yin
Theses and Dissertations
Nonmetallic Arsenic and hydrocarbon BTEX are the most common and harmful contaminants in groundwater. Many oxide, biological and metal based adsorbent materials have been investigated in the laboratory and in the field environment. These materials, especially for nano-TiO2, have been extensively studied in the laboratory due to its high efficiency and remediation outcomes. This research compared two different synthetic nano-TiO2, aggregated dendritic nano-scale anatase TiO2 and the polymorphed rutile nano-TiO2 attached to the surface of SiO2, to study the feasibility of nano-TiO2 in geoenvironmental engineering applications. Characterization of crystal structure, purity, and morphologic, microscopic features of the materials were examed …