25 articles in this issue
Sri Wardhani,Fanny Prasetia,Mohammad Misbah Khunur,Danar Purwonugroho,Yuniar Ponco Prananto
The effect of CO2 flow rate and carbonation temperature were studied in the synthesis of PCC from limestone using carbonation method. The synthesis was started by dissolving CaO that was obtained from calcination of limestone into HNO3 6M. The solution wa... see more
Futri Wulandari,Eka Putra Ramdhani,Yatim Lailun Ni’mah,Ahmad Anwarud Dawam,Didik Prasetyoko
Red mud is a generated by-product in alumina production from bauxite ore. In this study, Bintan’s red mud has been used as alumina and silica source to synthesize amorphous mesoporous aluminosilicates material. Alkali fusion method with a NaOH/red mud rat... see more
Alfa Akustia Widati,Nuryono Nuryono,Dessy Puspa Aryanti,Madjid Arie Wibowo,Eko Sri Kunarti,Indriana Kartini,Bambang Rusdiarso
In this study water repellent layered glass has been prepared by coating silica (SiO2) combined with a hydrophobic silane compound. SiO2 was extracted from rice hull ash and two silane compounds, namely hexadecyltrimethoxysilane (HDTMS) and trimethylchlor... see more
Haryadi Haryadi,Muhammad Ridwhan Wira Purnama,Ari Wibowo
Carbon nanodots (CNDs) which are part family of carbon nanoparticles have drawn a lot of attention due to their prominent characters and wide prospective applications. The materials are non-toxic and exhibit fluorescence properties that are potential for ... see more
Eva Fathul Karamah,Ika Putri Adripratiwi,Linggar Anindita
Tofu industry wastewater is one of the environmental pollutants that need more effective treatment. Ozonation and adsorption method is known to have the capability to oxidize organic compound in wastewater. Adsorption is done by using granular activated c... see more
Meyga Evi Ferama Sari,Suprapto Suprapto,Didik Prasetyoko
Alkalinity is one of the most important factors that influence the crystallization process of zeolite and the product properties. The influence of alkalinity on the synthesis of sodalite from kaolin without calcinations was reported in this research. The ... see more
Roto Roto,Hani Prima Rasydta,Adhitasari Suratman,Nurul Hidayat Aprilita
Silver nanoparticles having uniform size and shape, a diameter range of 10–50 nm, excellent stability, and high zeta potential are always desirable for many applications. The silver nanoparticles were synthesized by chemical reduction method using some re... see more
Yoanes Maria Vianney,Ivana Rosalyn,Stephanie Angela
Dye effluent is one of the most prominent source of water contamination. This study investigated the solar based photocatalytic decolorization of four commercial reactive dyes, which are Reactive Turquoise Blue G 133, Reactive Yellow M4g, Reactive Bordeau... see more
Muzakky Muzakky,Herry Poernomo
Characterization of the pillarization process product of ZrO2-montmorillonite from Zirconium oxychloride local made of PSTA-BATAN has been done. The objective of this research is to control the quality of pillarization process product of the new material ... see more
Behrooz Maleki,Hadi Natheghi,Vahid Sokhanvaran,Samaneh Sedigh Ashrafi
Nanomagnetic Fe3O4@SiO2@ZnCl2 was used as a simple, cost-effective, and reusable heterogeneous catalyst for the synthesis of 2,6-diamino-4-arylpyridine-3,5-dicarbonitriles by a one-pot-three-component condensation reaction of malononitrile, ammonium aceta... see more
Surya Hadi,Ni Made Sri Suliartini,Lely Kurniawati,Surayyal Hizmi
The overall objectives of the research were (1) to study the capability of sodium hydrosulfide (NaHS) and sulfidic natural water (SNW) of Sebau in recovery of Cu2+, (2) to investigate the potency of integrating treatments of neutralization with sulfidizat... see more
Ratnaningsih Ratnaningsih,Nur Richana,Sakae Suzuki,Yoshiharu Fujii
Purple Dioscorea alata is one kind of tuber crops that rich in polyphenolic compounds. In Indonesia, the utilization of this yam is still very limited because it is easily damaged on the fresh form. Due to its high perishability, then the fresh tuber have... see more
Yohanes Martono,Suryasatriya Trihandaru,Ferdy Semuel Rondonuwu
Rebaudioside A and stevioside are abundant steviol glycoside contained in Stevia rebaudiana leaves. These components are widely used as a natural sweetener. The objective of this study was to develop rapid determination method of stevioside, and rebaudios... see more
Hari Adi Prasetya,Popy Marlina,Arbi Dimyati
The research on Characteristic of vulcanizate rubber using cassava starch composite (Manihot glaziovii) modification - latex as filler has been done. The composite variation of cassava starch concentration is 0, 40, 80, 120, 160 and 200 phr in three repli... see more
Novita Indrianti,Yudi Pranoto,Akmadi Abbas
The edible films were prepared from native sweet potato starch (SPS) or modified sweet potato starch through heat-moisture treatment (HMT). The treatments which were carried out in this research were the different durations of HMT (1, 2, and 3 h) and the ... see more
Silviana Silviana,Piontek Benedictus Brandon,Bella Ayu Silawanda
Chicken feet is one of sources used to produce biodegradable films due to inexpensive and abundant source. Chicken feet contains extracted gelatin amount of 27.61 to 33%. This biofilm was prepared from cassava bagasse starch with citric acid as cross-link... see more
Kristian Handoyo Sugiyarto,Cahyorini Kusumawardani,Kristanti Eka Wulandari
The powder complex of tris(bipyridine)cobalt(II) trifluoromethanesulfonate octahydrate has been synthesized by direct interaction of the corresponding aqueous solutions (and drops of ethanol) of cobalt(II) nitrate, bipyridine, and potassium triflate. The ... see more
Krishnan Nhattuketty Shainy,Rajamanickam Usha
In the present study, Pseudomonas monteilii CR13 isolated from petroleum contaminated soil demonstrated the highest specific o-cresol degradation rate at all tested o-cresol concentrations and also was not disturbed by the starting substrate concentration... see more
Abu Hasan,Rochmadi Rochmadi,Hary Sulistyo,Suharto Honggokusumo
This study examined the effect of ingredients mixing sequence to the vulcanization kinetics of natural rubber. The effects of mixing temperature, vulcanization temperature, and the carbon black type upon the kinetics were also studied by using rheography ... see more
Ira Prima Sari,Muhammad Imam Basyiruddin,Rukman Hertadi
Biosurfactant is environmentally friendly surfactant produced by a certain microorganism in a lipid-rich medium. A previous study has shown that Halomonas meridiana BK-AB4 had the potential of a moderately halophilic bacterium in converting olive oil into... see more
Rahmah Hashim Abdullah,Amjed Mirza Oda,Alaa Rasheed Omran,Ameer Salem Mottaleb,Teeba Mudhefer Mubarakah
The performance sawdust as a low cost adsorbent to remove Direct Blue 85 (DB85) dye from aqueous solutions has been evaluated. The characteristic of sawdust analyzed by FTIR and XRD. The removal percentage of this dye was studied at different experimental... see more
Alexandr Ivanovich Vezentsev,Dang Minh Thuy,Lidia Fedotovna Goldovskaya-Peristaya,Nadezhda Alexandrovna Glukhareva
The adsorption of methylene blue from model aqueous solutions on bentonite-like clay, hydroxyapatite, and a composite sorbent has been investigated. The kinetic and thermodynamic parameters of adsorption in the temperature range 298–333 ? have been calcul... see more
Harno Dwi Pranowo,Fadjar Mulya,Hafiz Aji Aziz,Grisani Ambar Santoso
Study of substituent effect on properties of platinum(II) porphyrin had been performed using DFT method. The aim of the study is to investigate the effect of substituent group on the electronic and optical properties of the platinum(II) porphyrin. Geometr... see more
Sholihun Sholihun,Hana Pratiwi Kadarisman,Pekik Nurwantoro
The geometry optimization of the nitrogen-doped diamond has been carried out by the density functional theory (DFT) calculations. We model the defective diamond of substitutional and interstitial nitrogen atoms by using a simple-cubic supercell. Atoms in ... see more
Noor Syafiqah Habdul Latif,Sheikh Ahmad Izaddin Sheikh Mohd Ghazali,Erna Normaya Abdullah,Azizul Hakim Lahuri,Mohammad Fadzlee Ngatiman,Nur Nadia Dzulkifli
Corrosion of metal is a serious issue across many industries and is considered costly. Acids used during the cleaning process in industries may contribute to metal erosion. Dithiocarbamate is a ligand that can act as a corrosion inhibitor due to the prese... see more