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All Journal Jurnal Teknik Kimia USU
Rahmad Dennie A. Pohan
Departemen Teknik Kimia, Fakultas Teknik, Universitas Sumatera Utara
Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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PEMBUATAN ASAM OKSALAT DARI ALANG-ALANG (Imperata Cylindrica) DENGAN METODE PELEBURAN ALKALI Iriany; Andrew Faguh Sitanggang; Rahmad Dennie A. Pohan
Jurnal Teknik Kimia USU Vol. 4 No. 1 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (368.891 KB) | DOI: 10.32734/jtk.v4i1.1454

Abstract

Imperata grassland is one of the wild plant which have a low economic value but containing high cellulose. Therefore it is potentially to be used as raw material for oxalic acid manufacturing. The oxalic acid can be produced from imperata grassland through 4 steps: alkaline hydrolysis, precipitacion, acidification and crystallization. Experiments are carried out in a three necks glass equipped with thermometer, mixer, heater and condenser. Cooking solution NaOH were varied 3,5 N; 4 N and 4,5 N and cooking time 50, 60, 70 and 80 minutes. According to the result from the experiment, at the condition 98oC of cooking temperature, the highest yield of oxalic acid about 44,39% is obtained at 4 N concentration of sodium hydroxide and 60 minute of cooking time. Oxalic acid produced has 104oC of melting point and 1,2 of degree of acidity (pH).
Co-Authors Andrew Faguh Sitanggang Iriany