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All Journal Seminar Nasional Teknik Kimia Kejuangan Folia Medica Indonesiana JURNAL ILMIAH AGRINECA IJCR (Indonesian Journal of Chemical Research)
HARJANTO HARJANTO
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Environmental Science Materials Science & Nanotechnology Other

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Distribusi Konsentrasi COD dan TSS pada Pengolahan Limbah Tahu dengan menggunakan Reaktor Alir Pipa Sitti Sahreni; Harjanto Harjanto; Mustafa Mustafa; Musdalifah Musdalifah; Firman Firman
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2017: PROSIDING SNTKK
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Liquid waste in tofu industry has the COD and TSS values that exceed the environmental quality standards.The high value of COD and TSS liquid waste in tofu industry is caused by the high organic level.The organic content from tofu industry can be lowered by a fermentation process using a reactor.This study is conducted to investigate the effect of the reactor’s length to the decreasing level of COD and TSS liquid waste of tofu industry with fermentation method using cow intestines as starter.This research was conducted by varying the sampling length of the reactor’s flow pipe from 20 cm, 40 cm, 60 cm, and 80 cm.The process was done within 45 days and a loading rate of 0.8 L/5 days.Based on the results of the research, time and sampling length affect the % of the decreasing level of COD and TSS.The fermentation process using flow pipe reactor enables the COD to get lower, up to 98.57% with the COD value of 196 mg/L at 80 cm sampling length on day 45, while the TSS can be lowered up to 77.38% with TSS value of 38 mg/L at 80 cm sampling length on day 45. The values of COD and TSS have met the environmental quality standards based on the number 02 of2011 East Kalimantan provincial.
COMPARISON EFFECT OF CV 12, ST 36 AND ST 40 EA ON SHORT TERM ENERGY BALANCE REGULATION IN HIGH FAT DIET RAT Purwo Sri Rejeki; Harjanto Harjanto; Raden Argarini; Imam Subadi
Folia Medica Indonesiana Vol. 52 No. 3 (2016): JULY - SEPTEMBER 2016
Publisher : Faculty of Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (104.509 KB) | DOI: 10.20473/fmi.v52i3.5448

Abstract

The aim of this study was to determine the comparative effects of EA (EA) on the CV12, ST36 and ST40 to weight gain prevention over the short-term regulation of energy balance. The study was conducted with a completely randomized design. Rats were divided into five groups: negative control group (no treatment, n=5), positive control (sham EA/back, n=5), EA CV 12 (n=6), EA ST 36 (n=6) and EA ST 40 (n=7). Rats were exposed to high-fat diet for two weeks and EA was simultaneously performed once daily, five days a week for two weeks with 2 Hz, for 10 minutes with continuous wave. Body weight, BMI, front limb circumference and rear were measured during study. Levels of blood glucose, cholesterol, triglycerides, LDL and HDL were measured at the end of the study; which reflects the short-term regulation of energy homeostasis. For weight loss, EA CV12, ST36 and ST40 group have lost weight significantly compared to the negative and positive control group. The ST40 group has a significant decrease than ST36 and CV12. The most significant decrease in BMI found in the ST40 group. EA did not affect blood glucose levels, but modulated blood lipid profile. In ST 40 group there was a significant decrease in cholesterol, LDL and triglycerides. EA at point ST 40 is potential in preventing increased body weight and BMI in rats exposed to high-fat diet compared to the CV 12 and ST 36. ST 40 is a point with a potential of lowering LDL and triglycerides serum so that it can play a role in the short term regulation of energy homeostasis but also in the prevention of dyslipidemia.
UJI DOSIS PUPUK P DAN K TERHADAP PERTUMBUHAN DAN HASIL TANAMAN KEDELAI (Glycine max L. Merril) David Do Rosario Marques; HARJANTO HARJANTO; TEGUH SUPRIYADI
JURNAL ILMIAH AGRINECA Vol. 11 No. 2 (2011): jurnal AGRINEÇA
Publisher : Fakultas Pertanian, Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/afp.v11i2.147

Abstract

The study aims to determine the effect of the dosage range of P and K fertilizers on the growth yield of soybean (Glycine max L. Merril) study was conducted in the Green house the Faculty of Agriculture, University of Surakarta Tunas Development The method used is the factorial method with the basic pattern of Randomized Complete Block Design (Block), consisting of two treatment factors, 1) type of dosage P (SP-36) consists of P1 = 25 kg SP-36/ha, P2 = 50 kg SP-36/ha, and P3 = 75 kg SP-36/ha, 2) types of K fertilizer (KCl) is comprised of K1 = 25 kg KCl / ha, K2 = 50 kg KCl / ha, and K3 = 75 kg of KCl / ha, with three times as many replications. The results showed (1) Treatment kinds of fertilizer P (SP-36) showed highly significant at fresh weight of crown, dry weight of crown, pod number per plant, number of empty pods per plant and dry seed weight per plant, but did not affect significantly in plant height. (2) types of K fertilizer treatments (KCl) showed highly significant effect on fresh weight of crown, dry weight of crown, pod number per plant, number of empty pods per plant and dry seed weight per plant, significant effect on plant height, but influential not evident in the number of empty per plant. (3) Interactions between the treatment of types of P fertilizer (SP-36) and K (KCl) have no significant on all parameters. (4) of dry seed weight per plant combined treatment with the highest dose of SP-36 amounted to 75 kg / ha with a dose of KCl at 75 kg / ha (P3K3), was 25,2 g per plant (6,3 ton/ha), and lowest in the combined treatment doses of SP-36 for 25 kg / ha KCl dose of 25 kg / ha (P1K1), was 21,0 g per plant (5,3  ton/ha)
PENGARUH DOSIS DAN FREKUENSI PEMBERIAN PUPUK UREA TERHADAP PERTUMBUHAN DAN HASIL PETSAI DI BAWAH TEGAKAN SENGON UMUR 1,5 TAHUN ROCHMADI ROCHMADI; HARJANTO HARJANTO; HARYUNI HARYUNI
JURNAL ILMIAH AGRINECA Vol. 6 No. 2 (2006): Jurnal Agrineḉa
Publisher : Fakultas Pertanian, Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/afp.v6i2.225

Abstract

This Research porpose to know the effect of dose and gift frekuensi fertilize the urea and also interaction of both to growth and result of crop petsai (Brassica Pekinensis L) at strightened of sengon ( Paraserianthes Fakataria). Research have been executed at date of 28 March 2006 to 30 May 2006, in Countryside Tumenggungan, Subdistrict of Selomerto of Regency Wonosobo, Province of Central Java with the place height 850 m is above sea level. Research use the factorial method of elementary pattern of RAKL (Random Device of Complete Group) with two treatment factor that is 1) Dose fertilize the urea ( D) consisted of by 3 level : D1 50 kg / ha, D2 = 75 kg / ha, D3 = 100 kg / ha 2) Gift frekuensi fertilize the urea (F) consisted of by 3 level : F1 momentary before planting, F2 = frekuensi plant and after crop old age the two week, F3 = momentary before planting, after crop old age two and four weeks. Result of research show the 1) Dose treatment fertilize the urea have cm effect on very real at high of crop, sum up the leaf plant, fresh heavy of dry brangkasan plant weight and consume the plant 2) treatment of gift frekuensi fertilize to have an effect on very real to fresh weight of crop ready to consumption, heavy run dry the crop ready to consume, but do not have an effect on the reality differ is not real at high of crop, sum up the leaf plant. fresh heavy of brangkasan plant, and dry weight of brangkcisan plant 3) Interaction usher the treatment of dose and its gift frekuensi have an effect on the reality of at high of thy weight and crop of brangkasan plant of but having an effect on is not real to amount of leaf plant, fresh heavy of .fresh brangkasan plant weight and consume the plant 4) fresh Heavy of highest consumption 297,90 g /plant, obtained at combination of D3 F3 ( dose urea 100 kg / ha given momentary before planting, after crop old age two and four weeks). fresh Heavy consume the minimal 94,16 g/ plant obtained at combination of plant D1 F2 ( dose urea 50 kg / ha with the moment gift plant and after crop old age two week).
EVALUATION OF THE USE OF STAR FRUIT LEAF ADHESIVE ON THE COMPRESSIVE STRENGTH AND DURABILITY OF BRIQUETTES MADE FROM DURIAN PEEL CHARCOAL AS AN ALTERNATIVE FUEL Istikhomah Umul; Annisa Rizki; Madjid Yusuf; Harjanto Harjanto
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Volume 8, ISSUE 1, 2023
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol8.iss1.art2

Abstract

Energi fosil memiliki jumlah yang terbatas dan tidak dapat diperbarui. Oleh karena itu diperlukan sumber energi terbarukan agar tidak tergantung dengan sumber energi fosil. Penelitian ini bertujuan untuk mengevaluasi pengaruh jenis dan persentase bahan perekat yang digunakan terhadap nilai kuat tekan dan durabilitas briket kulit durian.  Bahan utama yang digunakan dalam pembuatan briket adalah kulit durian. Bahan perekat yang digunakan adalah daun belimbing wuluh dengan persentase 0%, 2%, 4%, 6%, 8%, dan 10%. Pada penelitian ini dilakukan uji karakterisasi terhadap briket yang dihasilkan dengan acuan ISO 17225-1 dan ASAE S 269.4. Hasil penelitian menunjukkan bahwa nilai kuat tekan terbaik dengan konsentrasi perekat 0% (8,51kg/cm2) dan nilai durabilitas terbaik dengan konsentrasi perekat 8% (92,7%). Berdasarkan hasil pengujian diketahui bahwa penambahan bahan perekat menyebabkan nilai kuat tekan dan nilai durabilitas cenderung menurun.
Co-Authors Annisa Rizki David Do Rosario Marques Firman Firman Haryuni Imam Subadi Istikhomah Umul Madjid Yusuf Musdalifah Musdalifah Mustafa Mustafa Purwo Sri Rejeki Raden Argarini Rochmadi Rochmadi Sitti Sahreni Teguh Supriyadi