Morphological characteristics and electrical properties analysis of silica based on river and coastal iron sand

Abstract

This study aims to analyze silica's morphological characteristics and electrical properties based on the river and coastal sand. Iron samples were taken from Sompang river sand, East Lombok and Coastal Sand from Gading, Mataram City. The silica was synthesized using the sol-gel method with a sintering temperature variation of 100 to 175 ℃. Morphological characteristics samples analysis was done using SEM-EDX. The electrical properties of iron sand included measuring the dielectric constant using the parallel plate method. Furthermore, the resistivity was measured using the two-point probe method. In the silica-based on river sand sample, the resistivity value was inversely proportional to the sintering temperature. In contrast, the resistivity value of silica based on the coastal sand sample was directly proportional to the sintering temperature. Silica-based on river sand has a resistivity of about 7.1'104 Wm at a sintering temperature of 100℃ and 3.5'104 Wm at a sintering temperature of 175℃. Silica-based on river sand has a resistivity of about 1.8'104 Wm at a sintering temperature of 100℃ and 7.1'104 Wm at 175℃. This research is a preliminary study on the electrical properties of natural sand-based silica to improve understanding of the physical properties of silica to be used in technological applications, such as sensors. Furthermore, the dielectric constant value in the river sand sample was directly proportional to the sintering temperature. However, the dielectric constant in the coastal sand sample was inversely proportional to the sintering temperature. Silica-based on river sand has a dielectric constant of about 1.02'102 at a sintering temperature of 100℃ and 1.18'102 at 175℃. Silica-based on coastal sand has a dielectric constant of about 1.97'102 at a sintering temperature of 100℃ and 1.15'102 at 175℃.

Study of Babak River water quality using physical and chemical parameters in Kebon Kongok landfill (Lombok, Indonesia)

“…This is because metals have a greater conductivity than water. Therefore, the conductivity of river water is much influenced by the metals contained therein [28]- [30].…”

Synthesis of Magnetic Nanosilica Material Based on River Sand to Improve Water Quality

“…Many studies on iron sand carried out on river iron sand, such as iron sand in the Brantas river and iron sand in the Boli Kiba river in West Kalimantan, as well as beach sand and river sand in the Ketapang and Sungai beaches in the Pringgabaya area [16]. This research was conducted to identify the content of iron sand and to determine the mineral content in river iron sand to reduce the levels of phosphate ions in the water and to analyze the ratio of iron content in beach and river sand [4].…”