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Marlinda Marlinda
Politeknik Negeri Samarinda
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Materials Science & Nanotechnology

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KETAHANAN SOBEK KERTAS DARI PULP CAMPURAN SABUT KELAPA (Cocos nucifera) DAN PELEPAH PISANG KEPOK (Musa paradisiaca Linn) Sartika Nur Aisyah; Ramli Ramli; Marlinda Marlinda
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 1, No 2 (2021): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/jimsi.v1i2.867

Abstract

In general, the main material for making paper making is cellulose. Coconut coir waste contains 23,87% cellulose and kepok banana stem contains 64% cellulose, so that has the potential as an alternative raw material in the manufacture of paper pulp. Kepok banana peels contains 12,8% so it can be used as an adhesive (binder) to increase paper quality. The purpose of this study was to determine the best concentration of cooker solution NaOH in the mixture of coconut coir and banana smelter in producing the best pulp in accordance with SNI 0698:2010 and find out the effect of the concentration of cooking solution NaOH on the resistance of composite paper tear. A mixture of coconut coir and 120 g of banana smelter with a ratio of 40:80 cooked for 4 hours at a temperature of 100 ° C by varying the concentration of cooking solution NaOH 2%, 4%, 6%, 8% and 10%. Then the resulting pulp is printed into paper with the addition of a 35 g banana peel binder. The results in this study found that the best concentration of cooking solution NaOH at a concentration of 8% with cellulose levels of 81.80%, lignin levels of 13.34%, water content of 6.63%, ash content of 2.79% and paper tear resistance of 4393.54 mN.
KAPASITAS ADSORPSI LOGAM MANGAN (Mn) MENGGUNAKAN BIOSORBEN PEKTIN DARI KULIT PISANG KEPOK Mardhiyah Nadir; Sitti Sahraeni; Rifka Aulia Mawardi; Marlinda Marlinda
JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI) Vol 2, No 2 (2022): JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/jimsi.v2i2.1693

Abstract

The construction of a chemical plant has a negative impact on the environment by producing waste containing heavy metals such as manganese (Mn). One of the treatments of waste containing heavy metals by adsorption method. The use of pectin as a biosorbent in the adsorption process has been widely carried out because it has several advantages and contains active groups such as carboxyl and hydroxyl which play an important role in the adsorption process. This research aimed to determine the adsorption capacity of manganese (Mn) using pectin from kepok banana peel as a biosorbent. Pectin was obtained from the extraction of kepok banana peels using the Microwave Assisted Extraction (MAE) method. Manganese solution was adsorbed using 1 gram mass of pectin with variable adsorption time (60, 90, 120, 150, and 180 minutes). Identification of pectin functional groups at absorption wavelengths between 1000cm-1 to 3500 cm-1 using FT-IR spectrophotometer and the analysis results obtained that there are hydroxyl groups (3423,993 cm-1), carbonyl (1638,233 cm-1), carboxylate (1736.585 cm-1), ether (1079.942 cm-1) and carbocyclic (1238.076 cm-1). Mn metal after adsorption was analyzed using AAS. The results showed that the optimum adsorption time to adsorb Mn metal was 150 minutes with an adsorbed metal capacity of 0.182 mg/g (36.403%). The adsorption of Mn followed the Freundlich isotherm equation with KF = 0.0886 mg/g.  Keywords: adsorption, adsorption isotherm, adsorption capacity, Mn metal, pectin
Co-Authors Dhea Permatasari Putri Mardhiyah Nadir Ramli Ramli Rifka Aulia Mawardi Sartika Nur Aisyah Sitti Sahraeni Syaisariyana Alfin Wahida