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All Journal TEKNIK Jurnal Teknik Lingkungan Jurnal Serambi Engineering Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi
Mochtar Hadiwidodo
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering

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PEMANFAATAN ECENG GONDOK (EICHHORNIA CRASSIPES (MART.) SOLMS.) DALAM PENYISIHAN LOGAM BERAT CHROM (CR) PADA LIMBAH ELEKTROPLATING Sri Sumiyati; Mochtar Hadiwidodo
TEKNIK Vol 28, No 1 (2007)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (183.034 KB) | DOI: 10.14710/teknik.v28i1.2076

Abstract

Effluent that is produce by the electroplating industry, especially nickel chrome plating, contains chromemetal that is carcinogenic. The toxicities from chrome are caused by its ability to dissolve and it’s mobilityin the environment. An alternative treatment to reduce chrome is called fitoremediasi which uses plants asits indicator; in this case we use water hyacinth.At the preface experiment, we tried to plant mature water hyacinth in electroplating waste. First we tried toplant in 100% waste water in witch we repeated it 3 times. At the 3rd week; day 18; the plants becameyellowish and became wilted. Knowing this fact, we applied the time for our experiment the we were goingto executed, with assuming at the 18th day the plants will become wilted as an indicator that the waterhyacinth are saturated in adsorbing chrome as the heavy metal pollutant. This became the parameter indesigning the time treatment for the plant zone, 4 until 15 days.The treatment was done by making variation in the amount of plants that are planted, which was 0 plants(as the control), 1 plant, 2 plants, 3 plants, and 4 plants; with 3 times repeating at each stage. The result ofthis experiment after 18 days shows the chrome concentration and the efficiently in decreasing theconcentration on each stage. The highest efficiently for each plant was the treatment by 1 plant only. Thehighest efficiently in decreasing the concentration was 78,95% ad it was done by the treatment with 4plants. To get chrom concentration which is fill with the standard, we can add more water hyacinth into thewaste with the balance equivalent or we need the lower beginning concentration.
PENGGUNAAN ABU SEKAM PADI SEBAGAI ADSORBEN DALAM PENGOLAHAN AIR LIMBAH YANG MENGANDUNG LOGAM Cu Mochtar Hadiwidodo
TEKNIK Vol 29, No 1 (2008)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (249.832 KB) | DOI: 10.14710/teknik.v29i1.1912

Abstract

The industrial development have been increased together with the increasement of the society need. Theindustrial development will produce another product in the shape of dump that will be throw away to theenvironment. One of the industrial dump was the industrial dump from the copper industry that containshard metal copper (Cu). One of the way to manufacture dump is with the adsorption process of the riceplant dust husk. This research has the aim to know the adsorption ability of the rice plant dust husk indecreasing the concentration of Cu metal in the artificial water dump and it was done with batch processand continuous. The batch experiment use 10, 20, 30 gram adsorben for each media size variation 10-30mesh and 30-50 mesh. Has the highest decreasing efficiency in the weight of 30 gram (30-50 mesh) that is52,81%-87,80%. In the continuous experiment, it was done in the column with 2 inch diameter and with222 ml/menit debit. The result was the highest decreasing efficiency until 94,98%-97,10%. Speed constanvalues (k1) 0,00743-0,0160 ml/mg.second with adsorp capacity(q0) 0,7734-1,3376 mg/g.
Co-Authors Alfiza Fahmi Anggi Ajie Permana Badrus Zaman Endro Sutrisno Evelyne Hanaseta Gunandjar Gunandjar Haryono S Huboyo Haryono S Huboyo Hasmaniar Septiani Irawan Wisnu Wardhana Ismaryanto Gunawan Lintang Tyas Perdana M. Arief Budihardjo Mochamad Nurihsan Nureka Yuliani Roland Ignasius Silalahi Sri Sumiyati Suhardi Suhardi Wiharyanto Oktiawan Winardi Dwi Nugraha