Analysis of Detergent Waste Absorption Using Water Spinach (Ipomoea aquatica)

This study aims to determine the absorption of water detergent waste using water spinach (ipomoea aquatica). This experimental study used a randomized block design. Water samples were planted with water plants according to the research design. Detergent concentrations were observed using the MBAS (Methylene Blue Active Substance) method. The results showed that water spinach was able to reduce the detergent concentration and improve the concentration of water quality parameters (DO, BOD, and COD). After the treatment of water kangkong, the ability to absorb detergent was seen with a decrease in detergent levels until day 28 of 54.17%. The highest detergent absorption on days 7 and 14.

Analisis Penurunan Parameter Limbah Cair Laundry Menggunakan Rotating Biological Contactor (Rbc)

Laundry waste water is a part of domestic liquid waste and its classified as grey water. Liquid waste from laundry business containing pollutants such as BOD, COD, TSS, Total Phosphate, and Methylene Blue Active Substance (MBAS) that can give negative impact to the environment if it is not treated first. The purpose in this study was to analyze the influence of detention time to eficiency of decreasing pollutant concentration by using Rotating Biological Contactor (RBC) methods. The RBC used the palm fiber as the media. Variation of detention time in this study was 1, 3, 5, 7, 9, 11, 13, and 15 days. Linear regression was used to analysed the effect of detention time to pollutant concentration decreased. The result showed that the elimination efficiency of BOD, COD, TSS, Total phosphate and MBAS was 88%, 87%, 87%, 88% and 96%. The regression analysis results showed that there was a significant relationship between detention time and efficiency of decreasing pollutant parameters concentration (BOD, COD, TSS, Total Phosphates) of laundry waste by using RBC, but has no significant relationship in MBAS parameter.

Adsorpsi Alkil Benzena Sulfonat Menggunakan Zeolit Termodifikasi Cetyltrimethylammonium

Dalam penelitian ini dilakukan modifikasi zeolit alam teraktivasi NH4Cl (H-Zeolit) dengan surfaktan CTAB (Cetyltrimethylammonium Bromide) berbagai konsentrasi yaitu sebesar 0,25 mM (ZMS-1), 1 mM (ZMS-2), dan 100 mM (ZMS-3) sebagai adsorben senyawa ABS (Alkil Benzena Sulfonat). Karakterisasi dilakukan terhadap H-Zeolit dan ZMS menggunakan spektrofotometer FTIR. Parameter utama dalam penelitian ini adalah variasi konsentrasi ABS (50, 75, dan 100 ppm) dan waktu kontak (15, 30, 45, 60, 75, dan 90 menit). Konsentrasi ABS yang teradsorpsi dianalisis dengan spektrofotometer UV-Vis menggunakan metode MBAS (Methylene Blue Active Substance). Hasil spektra FTIR zeolit alam termodifikasi surfaktan (ZMS) menunjukkan puncak pada bilangan gelombang 2931,80 cm-1; 2854,65 cm-1 dan 1404,18 cm-1 yang mengindikasikan keberadaan gugus CTAB pada zeolit. Konsentrasi maksimum dan waktu optimum ABS yang dapat dijerap oleh per 0,1 gram ZMS adalah 50 ppm dalam 25 mL pada waktu 60 menit dengan persen adsorpsi sebesar 84,04% untuk H-Zeolit ; 96,42% untuk ZMS-1; 96,48% untuk ZMS-2; dan 97,29% untuk ZMS-3. Performa ZMS cenderung meningkat dengan konsentrasi CTAB pada zeolit.