Garuda - Garba Rujukan Digital

Pemanfaatan kembali krom limbah shaving untuk penyamakan kulit Sri Sutyasmi; Supraptiningsih Supraptiningsih
Majalah Kulit, Karet, dan Plastik Vol 30, No 2 (2014): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

This study aims to determine the extent of chrome in shaving waste that can be recovered and reused for tanning the leather and to reduce environmental pollution. Three kg of chrome shaving waste was hydrolyzed with NaOH by variation of 1, 2 and 3 % respectively in 10 liters of water, at temperature of 100oC for 1 hour. The results solution was then filtered to separate the chrome from the collagen protein . The filtered solids chrome was recovery by concentrated using sulfuric acid. The resulting chrome has Cr2O3 about 11 g/kg of chromium with utiluzation of 2 % NaOH. The recovered chrome was used for tanning goat skin with variation of 0, 30, 40, 50, 60, 70, and 100% respectively from total chrome used for tanning leather. Test result showed that the variation of 60 % met the standard of SNI 0253-2009: Upper leather footwear-goat. The use of recovered chrome reduce environmental pollution. Keywords: chrome, hydrolysis, shaving waste, tannery, environment protection. ABSTRAKPenelitian ini bertujuan untuk mengetahui sampai berapa jauh senyawa krom dalam limbah shaving bisa di peroleh dan dimanfaatkan kembali untuk penyamakan kulit serta untuk mengurangi pencemaran lingkungan. Untuk itu setiap 3 kg limbah shaving yang mengandung senyawa krom dihidrolisis dengan NaOH dengan variasi konsentrasi berturut-turut 1, 2 dan 3% dalam 10 liter air, pada suhu 100o C, selama 1 jam. Selanjutnya larutan yang dihasilkan disaring untuk memisahkan senyawa krom dari protein kolagen. Senyawa krom yang tertahan pada saringan diperoleh kembali dengan menggunakan Asam Sulfat pekat. Senyawa krom yang dihasilkan mempunyai kadar Cr2O3 ± 11 g/kg dengan penggunaan NaOH sebesar 2%. Krom yang didapatkan digunakan untuk menyamak kulit kambing. Variasi penggunaan krom hasil recovery yaitu 0, 30, 40, 50, 60, 70 dan 100% dari total krom yang digunakan untuk menyamak kulit. Hasil uji kulit tersamak menunjukkan bahwa variasi 60% memenuhi SNI 0253-2009: Kulit bagian atas alas kaki-kulit kambing. Penggunaaan krom hasil recovery mengurangi pencemaran lingkungan. Kata kunci: krom, hidrolisis, limbah shaving, penyamakan kulit, perlindungan lingkungan

Sifat fisik, kimia, dan morfologik kulit jaket kambing tersamak menggunakan krom hasil recovery air limbah penyamakan Sri Sutyasmi
Majalah Kulit, Karet, dan Plastik Vol 31, No 2 (2015): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20543/mkkp.v31i2.176

The purpose of this study was to recover chrome in tanning waste water to reduce environmental pollution and to utilize chrome as tanning agent. Chrome in tanning waste water leaching out of the drum was filtered and put in the tank and subsequently it was added with NaOH to generate chrome hydroxide. Furthermore, chrome hydroxide was converted to chrome sulfate as tanning agent by addition of concentred sulfuric acid. Cr2O3 content of chrome sulfate was determined before being used for tanning. The result showed that Cr2O3 content was 3958.6 mg/l. Variation of recovered chrome sulfate concentrations for tanning jacket leather were 25, 50, 75 and 100% respectively. Controls were made with the use of 100% of industrial grade chrome sulfate. The best result were goat jacket leather tanned with recovered chrome of 75 and 100 % for its physical properties and 25% for its chemical properties. Test results of SEM showed that chrome was morphologically presence in tanned goat leather mass.Keywords: tanning, jackets leather, chrome recovery, physical and chemical properties, leather morphology.ABSTRAKTujuan dari penelitian ini adalah mengambil kembali krom dalam air limbah penyamakan krom untuk mengurangi pencemaran lingkungan dan menghemat pembelian puder krom sebagai bahan penyamak krom. Air limbah penyamakan krom yang keluar dari drum, disaring dan dimasukkan dalam tangki dan ditambah NaOH untuk diendapkan menjadi krom hidroksida. Selanjutnya krom hidroksida dialirkan ke tangki yang lain dan ditambahkan asam sulfat pekat menjadi krom sulfat yang digunakan untuk menyamak. Hasil diuji kadar Cr2O3 terlebih dahulu sebelum digunakan untuk menyamak. Hasil uji kadar Cr2O3 adalah rata-rata sebesar 3958,6 mg/l. Variasi konsentrasi krom sulfat hasil recovery untuk penyamakan kulit jaket berturut-turut 25, 50, 75, dan 100%. Krom sulfat pasaran dengan konsentrasi 100% digunakan sebagai kontrol. Hasil uji sifat fisis kulit jaket kambing terbaik adalah konsentrasi krom berturut-turut 75 dan 100 % dan untuk sifat kimia kulit jaket terbaik 25 % yang disamak dengan krom sulfat hasil recovery. Hasil uji SEM menunjukkan bahwa secara morfologi krom dijumpai dalam kulit tersamak.Kata kunci: penyamakan, kulit jaket, chrome recovery, sifat fisik dan kimia, morfologi kulit.

Cara pengolahan limbah cair brown crepe untuk menurunkan bahan pencemar Sri Sutyasmi; Ike Setyorini; Prayitno Prayitno
Majalah Kulit, Karet, dan Plastik Vol 34, No 2 (2018): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Tujuan dari penelitian ini adalah untuk mengolah limbah cair brown crepe agar bisa menurunkan beban pencemar. Limbah cair brown crepe diolah dengan menggunakan 3 model pengolahan yaitu dengan pengolahan primer dan adsorpsi, pengolahan dari bak penampung langsung ke sand filter, dan pengolahan primer yang dilanjutkan ke sand filter. Hasil uji laboratorium menunjukkan bahwa penggunaan adsorben arang tempurung kelapa dapat menurunkan beban pencemaar untuk percobaan 1: COD 75,91%, BOD 73,94%, TSS 95,07% dan N-Amonia 91,23%. Percobaan 2: COD 91%, BOD 95%, TSS 84%, dan N-Amonia 61%. Percobaan 3: COD 65%, BOD 65%, TSS 88% dan N-Amonia 81%. Dari ketiga percobaan semua dapat menurunkan beban pencemar, namun yang paling efektif adalah percobaan 2 karena bisa menurunkan beban pencemar COD dan BOD paling tinggi. Variasi debit yang digunakan pada percobaan 2 tidak mempengaruhi penurunan beban pencemar.

Pengaruh mimosa pada penyamakan kulit jaket domba samak nabati menggunakan sistem C-RFP, ditinjau dari sifat organoleptis, fisis, dan morfologi kulit Sri Sutyasmi; Titik Purwati Widowati; Noor Maryam Setyadewi
Majalah Kulit, Karet, dan Plastik Vol 32, No 1 (2016): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

The purpose of this study was to determine the effect of the use of mimosa, to manufacture environmentally friendly leather for jacket by using the C-RFP system (C=Conditioning, R=Rapid, F=Fass (drum), P=Powder), on physical, organoleptic, and morphology properties of leather. It was also to obtain a formula for vegetable tanning with C-RFP system. Pickled skins are conditioned (pre-tanning) using Sodotan TSN and Sodotan APR, and then Sodotan TSN was chosen due to it meets the requirements of SNI leather for jacket (SNI 4593:2011). Then, pickled skins were tanned with mimosa and applied C-RFP system or rapid tanning without water added. Mimosa, used in this research, were 15%, 20%, and 25% and fatliquor were 12.5%, 15%, and 17.5%. Furthermore, The leather were finished into an environmentally friendly leather for jackets, and then tested for physical and organoleptic properties based on the SNI 4593:2011 as well as leather morphology (SEM). The physical test result shows that for mimosa 15%, 20% and 25%, and for fatliquor 15% and 17.5% are fullfill the SNI.

Efektivitas penggunaan gambir sebagai bahan penyamak nabati sistem C-RFP untuk pembuatan kulit jaket dari kulit domba Sri Sutyasmi
Majalah Kulit, Karet, dan Plastik Vol 33, No 1 (2017): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Gambier is obtained from the extraction of leaves and young twigs of Uncaria gambir, a shrub that grows in Indonesia. Gambier contains tannin by 20% to 55% so that can be used as a vegetable tanning material using the C-RFP system (C=Conditioning, R=Rapid, F=Fass (drum), P=Powder). This research aimed to determine the effectiveness of gambier as a vegetable tanning material using the C-RFP system. Pickled leather underwent a tanning process using the C-RFP system with gambier as the tanning material at various percentages, namely by 15%, 20%, and 25%, to be processed as leather for jackets. The variations of oil used to keep the leather supple were 12.5%, 15%, and 17.5%. The tanned leather was then tested in terms of its organoleptic, physical, chemical, and morphological properties. Results of the organoleptic test and most of the results of the physical test showed that leather for jackets which was tanned using a vegetable tanning material met the requirements set out by SNI 4593: 2011 (sheepskin/goatskin leather for jackets). Results of the SEM test indicated that leather for jackets which was tanned using a vegetable tanning material displayed dense and strong skin tissue, and this proves that gambier is very effective for vegetable tanning using the C-RFP system.Keywords: C-RFP, gambier, vegetable tanning, environmentally friendly.

Title

Found 5 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 5 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 5 Documents
Search