Browse Items (2068 total)

  • Collection: e-Journal USK

The analysis of heavy metals Pb and Cd concentrations in fish and oyster have been carried out by atomic absorption spectrophotometer (AAS) method. The wet digestion method was used for preparation sample prior to AAS detection. Sample was collected…

Effects of agitation and aeration on spore production and spore viability by biocontrol agent UPM 29 were investigated. The optimum fermentation at different agitation speeds, ranging from 300 rpm to 700 rpm show that there is an optimum agitation…

Pertukaran ion antara Cr3+ dan H+ menggunakan zeolit sebagai penukar ion adalah salah satu metode untuk memurnikan air dari ion kromium. Zeolit adalah senyawa aluminosilikat tetrahedral dengan struktur ikatan 3-dimesi, memiliki pori bagian dalam, dan…

The adsorption of an anion dye, methyl orange, from aqueous solutions on polymer based carbon coated monolith was studied in a batch system. The kinetics of adsorption with respect to the initial dye concentration was investigated. Langmuir and…

Oksidasi parsial metana menjadi metanol dan formaldehida menggunakan katalis tembaga molybdenum oksida berpenyangga silica (CuMoO3/SiO2) telah dilakukan. Preparasi katalis dilakukan dengan metode impregnasi. Hasil identifikasi dengan XRD menunjukkan…

Phenol is categorized as a refractory pollutant and its presence in water stream is strictly limited according to the government regulation. The present study investigated the degra-dation of phenol in aqueous solution by the effect of ultrasound.…

Proses pembuatan pupuk kalium sulfat umumnya dibuat dari asam klorida dan bahan baku yang mengandung anion sulfat (SO4). Dalam penelitian ini, pembuatan pupuk kalium sulfat dari bahan baku batuan gipsum alam sebagai sumber sulfat dan abu sekam padi…

Application of membrane technology for separation processes has been an efficient optional to produce a high quality of separation product. This process has been widely using in many field of industry. Therefore, knowledge of this membrane…

Ammonia biosorption by using Enceng Gondok, Eichhornia crassipes, was conducted in outdoor laboratory with objective to study the influence residence time and plant age to ammonia biosorption rate. The research uses reactor test consisting of wet…

Formic acid pulping of oil palm frond was conducted to study the influence of process variables (formic acid concentration, hydrogen peroxide concentration, and pulping time) on the properties of pulp produced (yield pulp and lignin content). A…
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