Garuda - Garba Rujukan Digital

p-Index From 2020 - 2025

2.042

P-Index

This Author published in this journals

All Journal Reaktor JURNAL KIMIA SAINS DAN APLIKASI Jurnal Ilmu Dasar BERKALA SAINSTEK Alchemy Jurnal Penelitian Kimia Jurnal Kimia Riset Indonesian Chimica Letters Molekul: Jurnal Ilmiah Kimia InSTEM

Novita Andarini

Jurusan Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Jember

Author-ID : 2975902

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics Other

Published : 24 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3

THE EFFECT OF SOL-GEL TEMPERATURE AND SOLVENT POLYETILEN GLYCOL (PEG) IN ZnO- TiO2 PHOTOCATALYST ACTIVITY AS DEGRADER OF TEXTILE DYEING LIQUID WASTE Haryati, Tanti; Andarini, Novita; Mardhiyah, Siti
Alchemy Jurnal Penelitian Kimia Vol 10, No 2 (2014)
Publisher : Alchemy Jurnal Penelitian Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar

The use of TiO2Â powder as photocatalyst still provides some disadvantages such as the difficulties in regenerate ion, the low adsorption and turbulence. These problems can be overcomed by providing the photocatalyst as a composite of ZnO-TiO2. This research aims to investigate the effect of composition of solvent and temperature of synthesis on the quality and photocatalytic activity of ZnO-TiO2Â which was prepared by sol-gel method. The photocatalytic activity was determined by applying the composite in degradation of Procion Red MX-8B under irradition of UV light for 24 hours. The procion red concentration after degradation was determined by UV-Vis spectrophotometer. Meanwhile the effect of synthesis temperature on crystal structure of composite was studied by XRD. The results show that the composite which was prepared by PEG 1500 at 1:4 of moles ratio and at 70oC of synthesis temperature has highest degradation percentage, i.e. 55.375 % and photocataltic activity of 3.561 x 10-7Â mg/cm2s.

IDENTIFIKASI KUALITATIF BAHAN ANALGESIK PADA JAMU MENGGUNAKAN PROTOTYPE TES STRIP Dirgantara, Vici Saka; Zulfikar, Zulfikar; Andarini, Novita
BERKALA SAINSTEK Vol 2, No 1 (2014)
Publisher : My Home

Show Abstract | Download Original | Original Source | Check in Google Scholar

Penggunaan bahan analgesik pada jamu merupakan salah satu pelanggaran prosedur pembuatan jamu sehingga diperlukan metode analisis untuk mengetahui keberadaan bahan analgesik secara dini. Peneliti sebelumnya telah membuat tes strip untuk pengujian parasetamol, aspirin, dan asam mefenamat menggunakan reagen mandelin, asam nitrat pekat, ferri klorida, dan metil merah yang diimmobilisasi ke dalam membran selulosa bakterial-Al2O3. Studi lebih lanjut dilakukan pemanfaatan prototype untuk identifikasi bahan analgesik pada jamu setelah dilakukan uji interferensi analit, daya beda, waktu respon, dan uji real sampel pada jamu anti nyeri. Hasil menunjukkan bahwa prototype memiliki limit deteksi yang cukup baik pada kisaran 0,125 â 5 mg/ml untuk parasetamol dalam air dengan waktu respon yang cepat pada kisaran 56 â 266 detik, 0,125 â 1 mg/ml untuk aspirin dalam air dengan waktu respon yang cepat pada kisaran 26 â 36 detik, dan 0,125 â 0,25 mg/ml untuk asam mefenamat dalam kloroform dengan waktu respon sedang pada kisaran 90 â 435 detik. Prototype mampu membedakan keberadaan analit secara spesifik melalui warna pada tiap series strip. Uji real sampel menunjukkan keberadaan parasetamol pada jamu J1 dan asam mefenamat pada jamu J2. Kata Kunci: Analgesik, Jamu, Prototype, Tes strip

Isolasi Emas dari Larutan Kompleks Emas Thiourea Hasil Ekstraksi dengan Metode Elektrolisis Nursiah, N.; Haryati, Tanti; Andarini, Novita
BERKALA SAINSTEK Vol 7 No 1 (2019)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v7i1.9917

Emas merupakan logam mulia dan memiliki nilai ekonomi yang tinggi. Metode pemisahan emas dari campurannya yang biasa digunakan yaitu amalgamasi dan sianidasi, namun keduanya menghasilkan limbah yang dapat merugikan lingkungan dan makhluk sekitarnya. Metode isolasi alternatif yang dapat digunakan yakni dengan leaching menggunakan pelarut thiourea dilanjutkan dengan pemisahan kompleks yang terbentuk dengan elektrolisis. Penelitian ini bertujuan untuk menentukan waktu optimum dan luas permukaan katoda optimum menggunakan karbon selama elektrolisis berlangsung. Variasi waktu elektrolisis yang diterapkan sebesar 60; 90; 120; 150; 180; dan 210 detik. Waktu optimum yang diperoleh yaitu pada 150 detik dengan persentase penurunan Au dalam larutan sebesar 98,99% diikuti kenaikan massa katoda sebesar 0,02 mgram. Elektrolisis selanjutnya dilakukan dengan variasi luas permukaan katoda karbon 0,1256; 0,2462; dan 0,5064 cm2 dengan waktu 150 detik. Luas permukaan optimum yang diperoleh pada 0,2462 cm2 dengan hasil penurunan Au dalam larutan sebesar 98,459% dan kenaikan massa katoda 0,020 mgram. Kata Kunci: elektrolisis, emas, leaching, thiourea.

The Effect of Different Precursor Concentration on The Synthesis of CaO Nanoparticles with Coprecipitation Methods for Palm Oil Transesterification Catalysis Novita Andarini; Ria Sherly Farida; Tanti Haryati
Reaktor Volume 21 No. 2 June 2021
Publisher : Dept. of Chemical Engineering, Diponegoro University

Calcium oxide nanoparticles was prepared by coprecipitation method using calcium acetate as precursor and calcined at 800 °C for 6 hours. This work studied the effect of different precursor concentrations on the size of calcium oxide obtained and its applicated for palm oil transesterification catalysis. Characteristics of samples were measured by XRD and SEM et al techniques. The results showed that the diffraction pattern of CaO has the same diffraction pattern as the XRD standard diffraction pattern from the Joint Committee on Powder Diffraction Standard (JCPDS). Calcium oxide analysis using SEM shows the morphology of particles that agglomerate almost all variations in precursor concentration. The particle size increases with increasing precursor concentration. The smallest particle size of 55.758 nm was produced on solid CaO from the lowest precursor concentration of 0.05 M. The catalytic activity of activated calcium oxide nanoparticle compound was tested in the production of methyl esters. The conversion of triglycerides in palm oil into methyl esters was 90.34%.Keywords: nanoparticles, calcium oxide, coprecipitation, precursor, catalys, metyl ester

HYBRID KITOSAN/BENTONIT SEBAGAI MATRIKS UNTUK PELEPASAN ION AMONIUM DALAM AIR Bambang Piluarto; Yusril Ihza Mahendra; Novita Andarini
Jurnal Kimia Riset Vol. 1 No. 1 (2016): Juni
Publisher : Universitas Airlangga

AbstrakHybrid kitosan/bentonit dalam bentuk bead telah berhasil dibuat dengan berbagai rasio komposisi kitosan dan bentonit. Dalam penelitian ini, bead dari hybrid ini digunakan sebagai matriks untuk ion amonium. Bead dibuat dengan pengendapan suspensi kitosan dan bentonit menggunakan koagulan NaOH. Bead hybrid yang diperoleh dikarakterisasi daya serap air (DSA) dan pelepasan ion amonium dalam air. Hasil yang diperoleh menunjukkan bahwa bentuk bead dipengaruhi oleh kandungan bentonit dalam hybrid. Peningkatan kandungan bentonit dalam hybrid menurunkan nilai DSA, namun meningkatkan pelepasan ion amonium dalam air. Sisa basa pada permukaan bead hybrid mempengaruhi deteksi pelepasan ion amonium dalam air. Kata kunci: hybrid, bead, suspensi, daya serap air, pelepasan ion AbstractChitosan/bentonite hybrid in the form of beads was successfully prepared in various of chitosan and bentonite composition ratio. In this study, beads of hybrid play role as matrix for ammonium ions. Beads prepared by precipitation of chitosan and bentonite suspension using NaOH as coagulant. Characterization beads obtained were carried out on water uptake and release of ammonia ions in the water. The results showed that forms of bead were affected by bentonite content in the hybrid. Increasing of bentonite content decreased water uptake of hybrid, however the release of ammonia ions in the water increased. Remaining base in the beads surface affected detection of release of ammonia ions in the water. Keywords: hybrid, beads, suspension, water uptake, release of ions

AKTIVITAS DAN SELEKTIVITAS KATALIS Ni/H5NZA TERHADAP HIDRORENGKAH METIL OLEAT MENJADI SENYAWA HIDROKARBON FRAKSI PENDEK Ratno Budiyanto; Donatus Setyawan; Novita Andarini
Jurnal Kimia Riset Vol. 3 No. 1 (2018): Juni
Publisher : Universitas Airlangga

It has conducted on the activity and selectivity of Ni/H5NZA catalyst toward the hydrocracking of oleat methyl catalytic becomes short fraction hydrocarbon compounds with the variation of Ni concentration such as 1%, 2% and 3% (% w/w) for oleat methyl catalytic hydrocracking becomes short fraction hydrocarbon compounds (C5-C11 hydrocarbon). The catalyst is prepared by wet impregnation method, then followed by calcinations at 500oC, oxidation at 400oC and reduction at 500oC, each of them are followed by a stream of nitrogen, oxygen and hydrogen with ± 5mL/second in stream velocity. The characterization of catalyst includes the determination of Si/Al ratio, Ni metal that were impregnated by using AAS instrument, and the acid determination by using gravimetric method. The hydrocracking process is done in flow-fixed bed reactor at 500oC; the catalyst are heated at first and followed by the reactants which are heated in pyrolysis reactor up to it change into vapor, then they are moved into the hydrocracking reactor. The liquid from hydrocracking process is collected and analyzed by using Gas of Chromatography (GC) and Gas of Chromatography-Mass spectrometer (GC-MS). The characterization results showed in general that Si/Al ratio decreases after being impregnated by Ni metal. The amount of Ni metal almost reach a half of early Ni concentration which is impregnated. On the other hands, the acid amount of catalyst after being impregnated by Ni metal rise higher than those before being impregnated by Ni metal. The research showed that the activity and selectivity of Ni-2%/H5NZA catalyst is better in hydrocracking hydrocarbon compounds which are shorter. The activity of Ni-2%/H5NZA catalyst reaches 91.3041%. Meanwhile the selectivity is more selective in creating the hydrocarbon compounds with C5-C11 chain and more lead to the formation of alkane and alkene. Keywords: methyloleate, catalyst, Ni/H5NZ,hydrocracking

SYNTHESIS THIN LAYER ZnO-TiO2 PHOTOCATALYSTS SOL GEL METHOD BY USING THE PEG (Polyethylene Glycol) AS SOLVENT Tanti Haryati; Novita Andarini; Mellisa Ika Febrianti
Jurnal ILMU DASAR Vol 13 No 1 (2012)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

The incorporation of TiO and ZnO material as a composite, to increase the activity of the catalyst. Synthesis of ZnO-TiO2 thin layer made using a sol-gel method with a variation of PEG as a solvent. The purpose of this research was to investigate the structure and morphology of ZnO-TiO2 thin layer on the variation of PEG as a solvent by sol-gel method . Preparation of ZnO sol of the precursor , while the TiO2 sol synthesized by dissolving the anatase TiO2 structure into polyethilen glycol . Sol of ZnO and TiO2 sol do sol mixing to form ZnO–TiO2 after it coated on a glass substrate and then calcined . Products were then characterized by X-ray diffraction to determine the crystal structure and SEM to determine its morphology . The test results show the crystal structure by XRD based difaktogram intensity , the greater the molecular weight of the PEG peak intensity of ZnO-TiO2 showed the lower. While based on morphological examination , it can be seen that the larger molecular weight PEG , ZnO - TiO2 granular greater.

Study of the Activity of Ni/H5-NZA Catalyst and Co(II)/H5NZA to Catalytic Cracking Methyl Ester Jatropha Novita Andarini
Jurnal ILMU DASAR Vol 12 No 1 (2011)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.527 KB)

The catalytic activity of H5NZA, Ni/H5NZA and Co/H5NZA converting methyl ester jatropha have been studied. The reaction was proceeded in flow fixed bed reactor that operated at the temperature of 450oC for 60 minutes using butanol as the catching-feed. The catalysts were prepared by acidifying of natural zeolite using HF 1%, HCl 6 M and NH4Cl 0.1 M), it was then hydrothermally treated and calcinated with nitrogen. Finally, it is oxidized and impregnated by ion nickel and cobalt (2% w/w). Meanwhile, the methyl ester jatropha as feed stocks was prepared by reacting a jatropha oil with sodium methoxy. The catalytic process was done by placing a catalyst on the flow fixed bed reactor at the temperature of 450oC and flowing a methyl ester and butanol to the reactor for 60 minutes with a fixed flow rate. A liquid fraction have been produced and were then characterized using GC. The maximum percentage conversion of methyl ester was found to be 94.6891% using catalyst of zeolite acid H5NZA which were indicated by a reduction signal of the original methyl ester. The selectivity of this catalyst was performed by the specific product on the retention time of <2.5 minutes. The modified catalysts which were impregnated by the ion Ni and Co shown their selectivity on range of retention time of 2.5-5.0 and 5.0-10 minutes respectively.

Penentuan Kapasitas Adsorpsi Selulosa Terhadap Rhodamin B dalam Sistem Dinamis Asnawati Asnawati; Resty Rukmi Kharismaningrum; Novita Andarini
Jurnal Kimia Riset Vol. 2 No. 1 (2017): Juni
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

AbstrakPenelitian ini bertujuan untuk menentukan kapasitas adsorpsi selulosa, massa optimum dan pH optimum. Kapasitas adsorbsi ditentukan dengan sistem dinamis dengan kecepatan 1 mL/12 menit melalui kolom, diameter 8 mm mengandung selulosa. Metoda ini dibuat dengan menvariasikan massa adsorbent dan pH Rhodamine B. kapasitas adsorpsi selulosa ditentukan dengan menggunakan persamaan Thomas. kurva Breakthrough digunakan untuk mengetahui keefektifan kolom dalam mengadsorpsi Massa adsorben divariasikan sebesar 0,1; 0,2; dan 0,3 gram serta pH larutan influen divariasikan pada pH 5, 6 dan 7. Massa adsorben dan pH larutan influen dengan kapasitas adsorpsi paling optimum adalah massa 0,3 gram dan pH 7. Kapasitas adsorpsi selulosa terhadap Rhodamin B sebesar 5, 94 mg/g. Kata kunci: Adsorpsi, Rhodamin B, selulosa, sistem dinamis AbstractThis study is to determine the adsorption capacity of the cellulose to Rhodamine, the mass optimum and pH optimum. Cellulose adsorption capacity is determined in a dynamic method with a flow rate of 1 mL/12 minutes through the column, diameter of 8 mm, containing cellulose. This method was made variations of the mass of adsorbent and the pH of the influent Rhodamine B solution. Determination of the adsorption capacity of cellulose in this study used the model equations Thomas. Breakthrough curves were used to determine the effectiveness of the column in which cellulose adsorb. Mass adsorbent and the pH of the influent with the highest adsorption capacity is mass of 0.3 grams and pH 7. The adsorption capacity of cellulose to Rhodamine B is 5,94 mg/g Keywords: Adsorption, Rhodamine B, cellulose, dynamic system

The Application of Slow Sand Filtration Technology for Improving Water Quality at Taman Gading Housing Area, Kaliwates District, Jember Muflihah, Yeni Maulidah; Utomo, Denny Trias; Handayani, Wuryanti; Sulistiyo, Yudi Aris; Andarini, Novita; Asnawati, Asnawati; Indarti, Dwi
Jurnal Inovasi Sains dan Teknologi untuk Masyarakat Vol. 1 No. 2 (2023): November
Publisher : Faculty of Mathematics and Natural Sciences, University of Jember. Jl. Kalimantan No.37, Krajan Timur, Jemberlor, Kec. Sumbersari, Jember Regency, East Java 68121

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/instem.v1i2.470

Water is a basic need for all living organisms. Water quality implies living quality. Several parameters influencing water quality include minerals, dissolved organic substances, and turbidity. The water consumed must meet proven water quality standards. However, water quality still needs to be improved in several areas before consumption. The well water in residential areas placed on rice fields generally needs to meet the requirements for consumption. Many Taman Gading housing complex residents, especially in RW 036 RT 006, still use the well water to meet their daily needs. The well water quality in this area tends to be smelly and somewhat misty. Proper treatment is needed to improve the quality of well water in this area to reduce the negative impact on the population's health in the long term. This training focused on well water purification and filtration using slow sand filtration technology (SPL) to improve water quality. This method uses activated charcoal, sand, gauze, and pumice as filter media in specific proportions. The use of this method is effective and efficient in reducing the turbidity level of the sample water to the threshold for drinking water (<500 ppm), with a neutral pH (close to 7.00). This technology is effortless for residents to use and apply independently at a relatively low cost.

Co-Authors Asnawati Asnawati Asnawati Assiddiq, Mustafid A’yun Bambang Piluarto Denny Trias Utomo, Denny Trias Dewi, Widya Puspita Dwi Indarti Kamila, Wilda Lutfia, Zuhrotul Maziyyah, Deys Sya’fatul Mellisa Ika Febrianti Nursiah Nursiah, Nursiah Nursiah, N. Purwo Handoko, Donatus Setyawan Puspa, Aranca Nindya Ramadhani, Ferlia Suci Ratno Budiyanto Resty Rukmi Kharismaningrum Ria Sherly Farida Rika Yulianti, Rika Roziqin, Achmad Zainur Siti Mardhiyah Sunnardianto, Gagus Ketut Sutisna Sutisna Suwardiyanto Suwardiyanto Suwardiyanto Suwardiyanto, S. Tanti Haryati Vici Saka Dirgantara, Vici Saka Wuryanti Handayani Yeni Maulidah Muflihah Yudi Aris Sulistiyo, Yudi Aris Yusril Ihza Mahendra Zakaria, Helmy Ahmad Zulaicha, Siti Zulfikar Zulfikar

Title

Found 24 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 24 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 24 Documents
Search