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All Journal JOURNAL OF COASTAL DEVELOPMENT Reaktor Bulletin of Chemical Reaction Engineering & Catalysis International Journal of Renewable Energy Development TEKNIK METANA JURNAL KIMIA SAINS DAN APLIKASI JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Jurnal technoscientia Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Bulletin of Chemical Reaction Engineering & Catalysis Majalah Ilmiah MOMENTUM Khazanah Informatika: Jurnal Ilmu Komputer dan Informatika Indonesian Journal of Chemistry Indonesia Journal of Halal AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Indonesian Journal of Chemical Analysis (IJCA) Jurnal Kreativitas PKM BILANCIA Unnes Journal of Public Health Jurnal Teori dan Aplikasi Fisika Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Indonesian Journal Of Energy And Mineral

Heru Susanto

Department Of Chemical Engineering, Faculty Of Engineering, Universitas Diponegoro, Jl. Prof. Soedharto SH, Tembalang, Semarang 50275, Indonesia

Author-ID : 395992

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health

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SEJARAH PERKEMBANGAN PERUNDANG-UNDANGAN WAKAF DI INDONESIA Heru Susanto
Bilancia: Jurnal Studi Ilmu Syariah dan Hukum Vol. 10 No. 2 (2016): BILANCIA
Publisher : Fakultas Syariah Institut Agama Islam Negeri Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24239/blc.v10i2.290

Endowment practice in Indonesia has been accepted by the societies (customary law) since the first time of Islam comes to Archipelago. It is designated by the establishment of mosques being built on waqf land. Subsequent to Indonesia's liberty, the government issued several regulations regarding waqf, such as Government Regulation No. 28 of 1977 concerning Perwakafan Tanah Milik (Endowment of freehold estate), PMA No. 1 of 1978 concerning Implementing Regulation Government Regulation No. 28 of 1977 concerning waqf lands, Islamic Law Compilation (KHI), and other regulations. Devining to the enahncement of waqf law, it is necessary to review the historical overview deeply to recognize the development of waqf in the Indonesia

MODIFIKASI KARBON AKTIF SEBAGAI ADSORBEN UNTUK PEMURNIAN BIOGAS Susanto, Heru; Wijaya, Wishnu; Widiasa, I Nyoman
TEKNIK Volume 34, Nomor 1, Tahun 2013
Publisher : Diponegoro University

The use of biogas as an environmentally friendly fuel is limited by the presence of CO2 and water vapor asimpurities. Therefore, biogas purification for CO2 and water vapor removal is very important step during biogasapplication. This paper presents a process for biogas purification by means of adsorption using either modifiedor unmodified activated carbon as an adsorbent. The modification was performed by passing a pure ammoniagas into activated carbon in a quartz reactor. The results showed that the adsorption process using modifiedactivated carbon decreases CO2 content in biogas up to 67.5% whereas for unmodified activated carbon was of43%. Further, the modification increased CO2 adsorption capacity from ~28 to ~38 mg CO2/g adsorbent. Theincrease in feed temperature decreases CO2 adsorption capacity.

PENGGUNAAN MEMBRAN ULTRAFILTRASI DALAM PEMBUATAN SARI BUAH RAMBUTAN JOS, BAKTI; Susanto, Heru; Kuntolaksono, Satrio; Ariyanto, Yanuar
METANA Vol 6, No 02 (2010): Desember 2010
Publisher : Universitas Diponegoro

Abstract Â Hairy fruit (Nephelium sp) is fruit of horticultural belong in family Sapindacaeae. Membrane is a thin layer separates two phases which allow the displacement of specific components and hold other components that do not being needed. Ultrafiltration is a filtration process using membranes that filter out particles with a size of 20 to 1000 Angstrom. Results of ultrafiltration has high purity (0.4 to 0.6 NTU turbidity) than results from conventional manner (1.5-3 NTU turbidity). Yield gained was 5-8% higher than that gained from conventional. Dependent variable used is kind of hairy fruits (crops and cans). The independent variable is the pressure 2 kg/cm2, 3 kg/cm2, 0.4 kg/cm2, 0.5 kg/cm2, 0.6 kg/cm2 and the type of membrane (PES and hydrosart). The result of the study showed that greater operation pressure resulted in greater turbidity, and greater flux. The greater flux resulted smaller selectivity and pass the requirement of Environmental Protection Agency, USA. Â Key word : Hairy fruits, juice, membrane, ultrafiltration

DESAIN DAN IMPLEMENTASI SISTEM MONITORING TEGANGAN DAN ARUS MOTOR INDUKSI TIGA PHASE MENGGUNAKAN KONSEP INTERNET OF THINGS (IOT) Susanto, Heru; Nurcahyo, Agus
Jurnal Teknologi Technoscientia Vol 11, No 1 (2018):
Publisher : IST AKPRIND YOGYAKARTA

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ISBAT WAKAF SEBAGAI UPAYA PERLINDUNGAN HUKUM TANAH WAKAF YANG BELUM BERSERTIFIKAT Heru Susanto
Bilancia: Jurnal Studi Ilmu Syariah dan Hukum Vol. 11 No. 1 (2017): BILANCIA
Publisher : Fakultas Syariah Institut Agama Islam Negeri Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24239/blc.v11i1.299

Wakaf disputes are found in many places in Indonesia. One of thereasons is that there are many wakaf land that has not been registered(certified) to the authorized official. So it caused that the wakaf landstill do not have certainty and the protection of clear law. This issueencourages legal experts to provide solutions to uncertified wakafland. The solution to provide protection for the wakaf land is theemergence of isbat wakaf as a solution to solve the problems of wakafland that has not been certified.Isbat wakaf aims to provide law protection of wakaf land, justifyingprevious law acts such as waqif, nadzir, and managers, and used asevidence in the certification of waqf objects, giving full advocacy tothe disputed waqf land or legally problematic. Isbat wakaf is theauthority of the Religious Court, this is based on Law no. 14 of 1970amended by Law no. 4 of 2004 on Judicial Power and Law no. 3 of2006 on Amendment to Law no. 7 of 1989 on Religious Courts. InLaw no. 14 of 1970 amended by Law no. 4 of 2004 on Judicial Poweris set forth in Article 2, paragraphs 1 and 2, and Law no. 3 of 2006 onReligious Courts Article 49

KARAKTERISTIK INTERAKSI MEMBRAN-FOULANT DAN FOULANT-FOULANT SEBAGAI DASAR PENGENDALIAN FOULING Heru Susanto; Asteria Apriliani Susanto; I Nyoman Widiasa
Reaktor Volume 14, Nomor 1, April 2012
Publisher : Dept. of Chemical Engineering, Diponegoro University

THE CHARACTERISTICS OF MEMBRANE-FOULANT AND FOULANT-FOULANT INTERACTIONS AS THE BASIS FOR CONTROL OF FOULING. Industrial membrane applications for solid liquid and liquid-liquid filtration are limited by fouling and concentration polarization. Because fouling significantly reduces the membrane performance and often changes the membrane selectivity, efforts to overcome the fouling problem are very important from practical applications point of view. This paper presents the basic knowledge required to control fouling and recent development in fouling control including the method developed by the author. Control of fouling can be done by (i) commercial membrane modification (post modification) by photo-graft polymerization, (ii) modification by polymer blending during membrane manufacturing and (iii) integration of a pretreatment into membrane processes. The results showed that all the developed methods can significantly reduce the resulting fouling; however, none of the method could totally remove the occurring fouling. The understanding of the membrane-foulant and foulant-foulant interactions is the key to success in control of fouling.Aplikasi teknologi membran untuk pemisahan padat cair di berbagai industri dibatasi oleh peristiwa fouling yang menyebabkan penurunan laju produk dan perubahan selektifitas membran. Oleh karena itu, pengendalian fouling merupakan upaya yang mutlak harus dilakukan. Makalah ini mempresentasikan pengetahuan dasar yang diperlukan untuk pengendalian fouling dan perkembangan terkini dalam pengendalian fouling termasuk hasil-hasil yang telah dikembangkan oleh penulis. Pengendalian fouling dilakukan dengan (i) modifikasi membran komersial (post modification) menggunakan metode photo-grafting, (ii) modifikasi dengan pencampuran polimer selama proses pembuatan (polymer blend) dan (iii) integrasi unit perlakuan awal (pre-treatment) dengan proses membran. Hasil penelitian menunjukkan bahwa kesemua metode yang dikembangkan dapat mengurangi terjadinya fouling secara signifikan. Namun, tidak ada satu pun metode yang dapat mengurangi fouling dengan sempurna. Pemahaman terhadap interaksi membran-foulant dan foulant-foulant merupakan kunci sukses dalam pengendalian fouling.

ULTRAFILTRATION AS PRETREATMENT OF REVERSE OSMOSIS: LOW FOULING ULTRAFILTRATION MEMBRANE PREPARED FROM POLYETHERSULFONE–AMPHIPHILIC BLOCK COPOLYMER BLEND Heru Susanto; Luqman Buchori; Siswo Sumardiono; Berkah Fajar; Titik Istirokhatun; I Nyoman Widiasa
Reaktor Volume 12, Nomor 4, Desember 2009
Publisher : Dept. of Chemical Engineering, Diponegoro University

This paper demonstrates the preparation of polyethersulfone (PES) ultrafiltration (UF) membranes via wet phase inversion method using either poly(ethylene oxide)-b-poly(propylene oxide)-b- poly(ethylene oxide) (Pluronic®, Plu) or polyethylene glycol (PEG) as hydrophilic modifier. Their effects on membrane structure as well as the resulting membrane performance and their stability in membrane polymer matrix were systematically investigated. The investigated membrane characteristics include surface hydrophilicity (by contact angle), surface chemistry (by FTIR spectroscopy) and water flux measurement. Visualization of membrane surface and cross section morphology was also done by scanning electron microscopy. The membrane performance was examined by investigation of adsorptive fouling and ultrafiltration using solution of bovine serum albumin as the model system. The stability of additive was examined by incubating the membrane in water (40oC) for up to 10 days. The results show that modification effects on membrane characteristic and low fouling behavior were clearly observed. Further, amphiphilic Pluronic generally showed better performance than PEG.

FRESH WATER PRODUCTION IN COASTAL AND REMOTE AREAS BY SOLAR POWERED LIQUID-LIQUID MEMBRANE CONTACTOR Heru Susanto; I G. Wenten
JOURNAL OF COASTAL DEVELOPMENT Vol 6, No 3 (2003): Volume 6, Number 3, Year 2003
Publisher : JOURNAL OF COASTAL DEVELOPMENT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (607.864 KB)

Liquid-liquid membrane contactor (LLMC) is a new desalination process using microporous hydrophobic membrane. The temperature difference at two solution-membrane interfaces gives rise to a trans membrane vapor pressure difference that drives the flux. In this work, the effect of process parameters on LLMC performance has been done. The process parameters consist of feed and permeate temperatures, cross flow velocity, feed concentration and mode of operation. In addition, this paper focuses on the development of LLMC by using solar and wind as energy sources. In this experiments micro porous hydrophobic hollow fiber polypropylene membrane with 0,2 mm was used as a contacting device. The experiment were conducted at temperature of 25-80oC, cross flow velocity of 0.02-0.2 m/s and solute concentration of 0-110.000 mg/L. Results show that the flux was influenced by the feed and permeate temperatures, the cross flow velocity and the concentration of solute. The increase of feed temperature increases the flux exponentially, whereas the flux seems to increase linearly with the increase of cross flow velocity. On the other hand, the flux was not significantly affected by the solute concentration. Furthermore, the flux in the counter current mode was lower than in the co-current mode. The average pure water fluxes obtained were in the range of 2-3 l/(m2h), whereas the products concentrations were in the range of 2-5.3 mg/L depending on the feed concentration. The operation of solar powered LLMC up to 10 days shows a very stable performance.

Hydrocracking of Coconut Oil on the NiO/Silica-Rich Zeolite Synthesized Using a Quaternary Ammonium Surfactant Sriatun Sriatun; Heru Susanto; Widayat Widayat; Adi Darmawan
Indonesian Journal of Chemistry Vol 21, No 2 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.55522

NiO/silica-rich zeolite catalysts were used for coconut oil hydrocracking. The catalyst was prepared with a mixture of Na2SiO3, Al(OH)3, NaOH, and quaternary ammonium surfactants. The surfactant was varied of types like as tetrapropylammonium bromide (TPAB) and cetyltrimethylammonium bromide (CTAB). The acidity of the silica-rich sodalite zeolites enhances with the increase in nickel oxide added through a wet impregnation. The hydrocracking process was carried out by a semi-batch method. Liquid products were analyzed using GC-MS. The results showed that the addition of surfactants increased the catalyst surface area and acidity. Meanwhile, the presence of nickel oxide increases the acidity of the catalyst. The hydrocracking results showed an increase in gas products when the surface area was high, i.e., 23.781% in silica-rich sodalite zeolite without template (Z), 32.68% in silica-rich sodalite zeolite with tetrapropylammonium (ZTPA), and 39.673% in silica-rich sodalite zeolite with cetyltrimethylammonium (ZCTA). The presence of NiO increased the liquid product and the selectivity of the bioavtur fraction (C10-C15), where the highest percentage of liquid product was 60.07% at NiO/ZTPA.

Electrical Conductivity of Carbon Electrodes by Mixing Carbon Rod and Electrolyte Paste of Spent Battery Handaja, Suka; Susanto, Heru; Hermawan, Hermawan
International Journal of Renewable Energy Development Vol 10, No 2 (2021): May 2021
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2021.31637

As a consequence of increasing battery use, spent batteries are increasingly contributing to solid waste. This situation has the potential to create a severe environmental problem. Thus, the utilization of these spent batteries, including the reuse of some components, is essential. The reusable components of the spent battery are carbon rods and electrolyte pastes. In this work, these components were utilized to prepare a carbon-based electrode for reverse electrodialysis. These electrodes can be an alternative to commercial Ti-based electrodes. The important characteristics of an electrode are the electrical conductivity, porosity, and surface area of the particles. This study aimed to determine the best electrical conductivity exhibited by various mixtures of carbon rods and electrolyte paste taken from spent batteries. The spent battery contained 95% carbon, and the electrolyte paste of the spent battery contained 64% carbon, 19% zinc, and 5% manganese. Before mixing, the carbon rods were powdered using ball mills for 4 h; 85.6% of particles were sized <1 Î¼m. The best electrical conductivity was obtained from a mixture of carbon rods and electrolyte paste in the weight ratio of 7:2, with electrical conductivity, porosity, and surface area of 2.75 S/cm, 0.019 cc/g, and 15.936 m2/g, respectively.

Co-Authors . Widayat Addina Nur Adi Darmawan Adjie, Firman Tri Anny Sulaswatty, Anny Aprilina Purbasari Ariestya Meta Devi Ariestya Meta Devi Asteria Apriliani Susanto B Budiyono Bakti Jos Bambang Cahyono Bambang Pramudono Berkah Fajar Dini Karunia Sari Dudi Hidayat Dwi Titik Apriyanti Dyah Hesti Wardhani Faleh Setia Budi Fauzi Ahmad Bogas Gunawan Gunawan Hamdani, Kiki Kusyaeri Handaja, Suka Hanifa Zakiyatul Urbach Heny Kusumayanti Hermawan Hermawan Hermawan Hesti Rahayu I G. Wenten I Nyoman Widiasa I Nyoman Widiasa Joddy Arya Laksmono Khairurrijal Khairurrijal Kuwat Triyana Lulluil Mahsunnah Lulluil Mahsunnah Luqman Buchori Marta Chandra Anikke Putri Meindy Catur Risqiputra Ngadiwiyana M.Si. S.Si. Nita Aryanti Nor Basid Adiwibawa Prasetya Novery Lysbetti Novintan Elistya Nur Rokhati Nur Syamsu Nurcahyo, Agus Nurcahyo, Agus Prasetiya, Hafiizh Risa Suryana Satrio Kuntolaksono Setiawan, Arief Ameir Rahman Siswo Sumardiono Sriatun Sriatun Titik Istirokhatun Tutuk Djoko Kusworo Umi Baroroh Lili Utami Wiloso, Edi Iswanto Wishnu Wijaya Yanuar Ariyanto Yoga Prasetya Yusi Luluk Rahmania

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