Claim Missing Document
Check
Articles

Found 2 Documents
Search

MOISTURE RELEASE OF TROPICAL PEAT SOILS AS DECREASING WATER TABLE Kurnain, Ahmad
TROPICAL WETLAND JOURNAL Vol 1, No 1 (2015)
Publisher : The Journal is published by Graduate Programe of Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Hydro-physics of peat soils varied with their peat decomposition degree. One of the important hydro-physics is ability of the peat soil to release water as decreasing water table. Potential of water availabilty to crop growth is evidently related to this behaviour. The present study was conducted to understand modes of moisture release of peat soils as decreasing water table. Water tables were simulated using a hanging column method.  The water table was arranged at levels of 0, 10, 20, 30, 50, and 100 cm below peat column surfaces. Potential of moisture release or in oppositely potential of moisture retention could be modelled with the 3 parameter equation.  Highly decomposed peat characterized by higher bulk density and lower total porosity stored less water but retained more water.Key words: available water, bulk density, peat soil, porosity.
Performance of Activated Carbon Adsorption and Ultrafiltration Membrane Hybrid Process for Leachate Treatment Farah Diena, Nurin Nisa; Mahmud, Mahmud; Riduan, Rony; Kurnain, Ahmad
TROPICAL WETLAND JOURNAL Vol 4, No 1 (2018)
Publisher : The Journal is published by Graduate Programe of Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Leachate is wastewater that contains pollutants dominated by organic matter. Conventional leachate treatments have some disadvantages therefore alternative treatments are needed. One of that alternative treatments is ultrafiltration membrane and adsorption as pretreatment. The aims of this study are to analyze adsorption isotherm and kinetic model for UV254 (UV adsorbance at 254 nm wavelength) adsorption, the performance of powdered activated carbon (PAC) adsorption and ultrafiltration membrane hybrid process for UV254 of leachate removal, and the effect of pretreatment towards membrane fouling. The result of this study are Freundlich isotherm and pseudo second order kinetic model best fitted model for ultrafiltration membrane hybrid process condition for UV254 removal level are at pH 6; 120 minutes contact time; and 4 g/L PAC doses. Adsorption as pretreatment can reduce membrane ultrafiltration fouling.