KINERJA KARBON AKTIF DARI KULIT SINGKONG DALAM MENURUNKAN KONSENTRASI FOSFAT PADA AIR LIMBAH LAUNDRY

Kinerja KarbonAktif dari Kulit Singkong............180Jurnal Teknologi Industri Pertanian 30 (2): 180-189KINERJA KARBONAKTIF DARI KULIT SINGKONG DALAM MENURUNKAN KONSENTRASI FOSFAT PADA AIR LIMBAH LAUNDRY PERFORMANCE OF ACTIVATEDCARBONFROM CASSAVA PEEL IN REDUCING PHOSPHATE CONCENTRATION IN LAUNDRY LIQUID WASTEIllah Sailah*, Fitri Mulyaningsih, Andes Ismayana, Tyara Puspaningrum, Anis Annisa Adnan, Nastiti Siswi IndrastiDepartemenTeknologi Industri Pertanian, Fakultas Teknologi Pertanian, Institut Pertanian BogorKampus IPB Darmaga PO Box 220, Bogor 16002E-mail: [email protected], Makalah: Diterima 1Juni2020; Diperbaiki 30 Juli2020; Disetujui 10 Agustus2020ABSTRACTCassava peelhas high carboncontent.It becomes potential as an adsorbent in adsorbing laundry phosphate compounds. Utilization of cassava peel into activated charcoal is an effort to reduce waste from the cassava processing industries. This study usedtwo types of activated carbonfrom cassava peel, i.e. acid activated charcoal usingHCl 0.4 M and alkaline activated charcoal using KOH 0.4 M. The objectives of this research were to determine: (1) the optimum contact time of adsorption at 30, 60, 90, 120, 150, and 180 min treatment time; (2) the optimum pH value of adsorption at pH 4, 6, 8, and 10; and (3) the adsorption capacity using adsorbent concentration treatmentof 0.5%, 1%, 1.5%, 2%, and 2.5% (w/v). The experimental design used was a Single Factor Randomized Block Trial Design, ANOVA-DNMRT statistical analysis, and linear graphic fordescriptiveanalysis. The analysis of the activated charcoal showed that water contentsof the acid activated charcoal and the alkaline activated charcoal were3.49% and2.89%, respectively; the ash contentswere 6.78% and 9.03%, respectively. The water content andash content meet the standard of SNI 06-3730-1995. The performance test showed that the optimum contact time and pH of acid activated charcoal were 30 min and pH 4, while the alkaline activated charcoal was 90 min and pH 6. The adsorption capacity of acidactive charcoal was 0.26 mg/g and the adsorption capacity of alkaline active charcoal was 0.49 mg/g. Activated carbon from the cassava skin can be used as an adsorbent to reduce phosphate concentrations in laundry waste.