30 articles in this issue
Nur Indradewi Oktavitri,Wahyu Budi Pratiwi,Indah Purnamasari,Mufrihatul Hayati,Mega Rosita Fitrianingtyas,Semma Hadinnata
Biogas quality from anaerobic digester influenced the combustion of biogas. A high percentage of CO2 in biogas indicates the low quality of biogas. Abatement of CO2 using microalgae, such as Chlorella vulgaris could enhance the quality of biogas. The aim ... see more
Aspiyanto Aspiyanto,Agustine Susilowati,Puspa Dewi Lotulung,Hakiki Melanie,Yati Maryati
Protein isolate from soy bean (Glycine soja L.) tempeh, mung bean (Phaseolus radiatus L.) tempeh and kidney bean (Phaseolus vulgaris L.) tempeh are natural source of folic acid with main role in brain smartness. 0.15 µm microfiltration (MF) membrane fitte... see more
Evarista Ristin Pujiindiyati,Satrio Satrio,Rasi Prasetio
Bantar Gebang landfill located in Bekasi regency is a biggest sanitary landfill in Indonesia which comes up some refusals from local people because of its bad impact on their environment. Major ion contents in leachate and fresh groundwater were investiga... see more
Muhamad Farid,Bambang Soegijono,Zainal Alim Mas’ud
Indonesia is a major producer of palm oils. However, more than 76% of the production is exported as crude palm oil (CPO) with low economic values. Chemical conversion is necessary to produce more valuable derivatives of renewable biobased material includi... see more
Eva Fathul Karamah,Pristi Amalia Nurcahyani
The popularity of batik has been increasing since it was declared as a world cultural heritage by UNESCO in 2009. Correspondingly, the content of textile dyes in textile industry wastewater is also increased. These dyes contain functional groups which mak... see more
Mieke Alvionita,Rukman Hertadi
The increasing production of biodiesel is typically followed by the increasing number of glycerol as co-product. The abundance of glycerol will cause an environmental problem since it can be used as the carbon source for bacterial growth including pathoge... see more
Indriana Kartini,Ira Nur Arba’atul Jannah,Fitri Rizki Amalia,Salim Mustofa,Eko Sri Kunarti,Respati Tri Swasono
The effect of pre-mixing by mechanical stirring before hydrothermal and hydrothermal time on the crystalline phases and morphology of titania has been studied. It was shown that nanotubes titania can be obtained after 5 h hydrothermal at 150 °C. The XRD p... see more
Abdul Aji,Eko Sri Kunarti,Sri Juari Santosa
Synthesis of gold nanoparticles (AuNPs) by reduction of HAuCl4 with p-aminobenzoic acid and p-aminosalicylic acid as a reducing agent was investigated. This work was conducted in order to determine the optimum condition of AuNPs synthesis and examine the ... see more
Daliya Indra Setiawan,Tun Tedja Irawadi,Zainal Alim Mas’ud
Hydrotreating process of Sunan candlenut oil by using NiMo-?Al2O3 catalyst has been successfully investigated. Preparation of NiMo-?Al2O3 catalyst by using dipping impregnation method generated catalyst used for hydrotreating process. This method consists... see more
Tri Joko Raharjo,Gilang Aji Pratama,Irma Nuryanti,Rarastoeti Pratiwi
The expensive beef have encouraged counterfeiting beef on processed food products such as meatballs. Mice meat is frequently reported used for adulteration of beef. The accurate method is needed to ensure the supervision of food safety. This study reports... see more
Teguh Wirawan,Ganden Supriyanto,Agoes Soegianto
A novel ion Imprinted polymer (IIP) material with 8-hydroxyquinoline (8HQ) (the complexing ligands), methacrylic acid (MAA) (the monomers), ethylene glycol dimethacrylate (EGDMA) (the crosslinker agent), benzoyl peroxide (the initiator), and ethanol-aceto... see more
Hesty Eka Mayasari,Ike Setyorini,Arum Yuniari
The blending of ethylene propylene diene monomer/natural rubber (EPDM/NR) needs much attention because of their incompatibility. In this work, the influence of accelerator type on cure characteristics and mechanical properties of 60/40 EPDM/NR blend was i... see more
Yuni Krisyuningsih Krisnandi,Dita Arifa Nurani,Anastasia Agnes,Ralentri Pertiwi,Noer Fadlina Antra,Alika Rizki Anggraeni,Anya Prilla Azaria,Russell Francis Howe
Hierarchical ZSM-5 zeolite was synthesized using a double template method using TPAOH and PDDA as templates, while microporous ZSM-5 was also prepared using only TPAOH as a template. The syntheses then were followed by impregnation with Mn(II) c.a. 2 wt.%... see more
Imam Prabowo,Ghiska Ramahdita,Mochamad Chalid
Plastic consumption becomes a main factor of land pollution due to poor degradability. To reduce the impact of land pollution, a biodegradable material such as cellulose, which has biodegradability, high strength, and specific modulus, is combined with pl... see more
Suyanta Suyanta,Sutarno Sutarno,Nuryono Nuryono,Bambang Rusdiarso,Eko Sri Kunarti,Hesti Kusumastuti,Lia Kurnia
In this research magnetite was synthesized by coprecipitation method, in which solution of NH4OH was added into the solution containing a mixture of Fe2+/Fe3+ (molar ratio 1:2) until pH 11 under strong ultrasonic agitation for 30 min. The black sediment o... see more
Hans Kristianto,Novitri Daulay,Arenst Andreas Arie
Adsorption is one of the most effective and economical method to treat heavy metals in water. In this study, we utilize waste chicken eggshells as biosorbent to adsorb Ni(II). Furthermore we study the effect of eggshell calcination on its adsorption perfo... see more
Retno Ariadi Lusiana,Ginanjar Argo Pambudi,Fitra Nilla Sari,Didik Setiyo Widodo,Khabibi Khabibi,Sri Isdadiyanto
Heparin, an active sulfate group material, grafted onto blend membrane citric acid cross-linked chitosan/poly (vinyl alcohol)-poly(ethylene glycol) (PVA-PEG) to improve the membrane properties. The physical tests shown that grafting reaction of citric aci... see more
Dedi Mardiansyah,Kuwat Triyana,Harsojo Harsojo
Cu nanowires (CuNWs) were synthesized in an aqueous solution at low temperature using ethylenediamine (EDA) as a capping agent and hydrazine as a reducing agent. This study investigated the growth of mechanism CuNWs and fabricated the transparent conducti... see more
Romi Sukmawan,Lestari Hetalesi Saputri,Rochmadi Rochmadi,Heru Santoso Budi Rochardjo
In this study, cellulose microfibers were isolated from bagasse fibers in three stages. Initially, the fibers were treated with 5 wt.% NaOH solution followed by bleaching with 5 wt.% H2O2 in an alkali condition (pH 11) to remove hemicelluloses and lignin.... see more
Krishna Purnawan Candra,Kasma Kasma,Ismail Ismail,Marwati Marwati,Wiwit Murdianto,Yuliani Yuliani
Here is the first report of bioethanol production from giant cassava, a variety of cassava originated from East Kalimantan. Hydrolysis on freshly grated cassava with two different acids was studied separately. The experiment was conducted as a single fact... see more
Rodiansono Rodiansono,Maria Dewi Astuti,Dwi Rasy Mujiyanti,Uripto Trisno Santoso
Selective hydrogenation of sugars (e.g. sucrose, cellobiose, glucose, fructose, xylose, arabinose) into sugar alcohols (sorbitol, mannitol, xylitol, arabitol) can be achieved by means of supported Raney Ni-based catalysts. Various supporting materials suc... see more
Roza Linda,Mohamad Rafi,Lee Wah Lim,Toyohide Takeuchi
Tetraethylene glycol monomethyl ether (TEGMM) and tetraethylene glycol (TEG) modified silica were synthesized and used in capillary liquid chromatography as stationary phases. The stationary phases were prepared by chemically bonding TEGMM or TEG on silic... see more
Sri Juari Santosa,Eko Sri Kunarti,Nurul Hidayat Aprilita,Beti Wulandari,Dhian Nuri Bawani
The responsible mechanism and performance of peat soil humin for the sorption of methylene blue (MB) and p-nitrophenol (p-NP) have been investigated. Humin was obtained from peat soil of Siantan, West Kalimantan, Indonesia, after removing the content of h... see more
Davoud Balarak,Ferdos Kord Mostafapour
The nano nickel(II) oxide (NiO) was synthesized by sol-gel method and used for degradation of Amoxicillin (AMO) from pharmaceutical wastewater. In this laboratory study, the effects of nanoparticle dose (0.25–2 g/L), reaction time (10–120 min), initial an... see more
Hemavathi Krishnan,A.K.M. Shafiqul Islam,Zainab Hamzah,Pubalan Nadaraja,Mohd Noor Ahmad
Penggunaan polimer yang dicetak secara molekuler untuk ekstraksi mikro fase padat (SPME) dari senyawa bioaktif semakin populer. Ketertarikan pada proses ekstraksi andrographolide yang efisien dari pabrik meningkat karena aplikasi terapetiknya yang luas. D... see more
Svetlana Titova,Sergey Skripchenko,Alexey Smirnov,Vladimir Rychkov
The uranium sorption from productive solutions containing chloride ions using anion-exchange resins was investigated. The VPAE ion exchanger had the highest values of the sorption capacity, which for the experiment in the static mode was 13 kg U m-3, and ... see more
Winifred Uduak Anake,Jacinta Eigbefoh Eimanehi,Conrad Asotie Omonhinmin
This study reports a combination of two indices, air pollution tolerance index (APTI) and anticipated performance index (API) as viable tools for selecting suitable plants for pollution abatement program. Leaf samples of 6 plant species; Mangifera indica,... see more
Mohammed A. Al-Dolaymi,Khalid F. Al-Rawi,Firas T. Al-Shamary,Mohammad M.F. Al-Halbosiy
Bosom malignancy is the most regularly analyzed disease and the imperative reason for growth-related passing among ladies, accounting for 23% of all new tumor cases and 14% of tumor passing's. L-Ascorbic acid, commonly known as vitamin C is well-known in ... see more
Andri Kurniawan,Oedjijono Oedjijono,Tamad Tamad,Uyi Sulaeman
The heavy metals distribution of ex-tin mining ponds were investigated. The time chronosequence was determined at the pond of age < 1 year (Station A), the pond of age 5–10 years (Station B), and the pond of age > 15 years (Station C). The results s... see more
Abdul Rohman,Anggita Rosiana Putri
Halal food is taken into account as any food permitted to be consumed by Muslim according to Syariah law. Due to the development of science and technology in which some new food components such as food additives have been synthesized and produced, some in... see more