Wara Dyah Pita Rengga

Prof. Dr. Wara Dyah Pita Rengga


Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 April 2017 in Journal of Environmental Chemical Engineering
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Journal Article
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WRWara Dyah Pita Rengga
Wara Dyah Pita Rengga
ACAchmad Chafidz
Achmad Chafidz
MSMahmud Sudibandriyo
Mahmud Sudibandriyo
MNMohammad Nasikin
Mohammad Nasikin
AAAhmed E. Abasaeed
Ahmed E. Abasaeed

25 May 2017 in Journal of Applied Polymer Science
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Journal Article
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ACAchmad Chafidz
Achmad Chafidz
WRWara Dyah Pita Rengga
Wara Dyah Pita Rengga
RKRawaiz Khan
Rawaiz Khan
MKMujtahid Kaavessina
Mujtahid Kaavessina
AAAbdulaziz M. Almutlaq
Abdulaziz M. Almutlaq
AAAbdelhamid Ajbar
Abdelhamid Ajbar

1 January 2023 in Engineered Science
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Journal Article
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WRWara Dyah Pita Rengga
Wara Dyah Pita Rengga
NINadya Alfa Cahaya Imani
Nadya Alfa Cahaya Imani
NWNanik Wijayati
Nanik Wijayati
TTTohiran Tohiran
Tohiran Tohiran
WCWidya Hary Cahyati
Widya Hary Cahyati
DSDoni Saputra
Doni Saputra
Biocomposite from pyrolisis result of rice husk and banana peels was prepared and utilized as an ibuprofen drug delivery system

20 March 2017 in Materials Science Forum
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Journal Article
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WRWara Dyah Pita Rengga
Wara Dyah Pita Rengga
SWSri Wahyuni
Sri Wahyuni
AFAgung Feinnudin
Agung Feinnudin
The performance of nanosilver loaded bamboo-based activated carbon as an adsorbent used for the adsorptive removal of formaldehyde in the air. The size porous of the active carbon is predominantly on the size of mesoporous and microporous. Adsorption tests have been evaluated in laboratory scale fixed-bed column, at different temperatures and initial formaldehyde concentration. In order to investigate is both equilibrium and thermodynamic aspects. The experimental data was fitted with Langmuir model and fit well with the adsorption capacity of 91-110 mg/g. The increase in temperature reduces the adsorption capacity. The thermodynamic parameters show that the values of ∆Go obtained to confirm the feasibility of activated carbon effective sorbents of formaldehyde. The formaldehyde adsorption process is exothermic and adsorbent has a good affinity to formaldehyde.

7 December 2014 in Bulletin of Chemical Reaction Engineering & Catalysis
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Journal Article
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WRWara Dyah Pita Rengga
Wara Dyah Pita Rengga
PHPrima Astuti Handayani
Prima Astuti Handayani
SKSri Kadarwati
Sri Kadarwati
AFAgung Feinnudin
Agung Feinnudin
Reaction kinetics of catalytic cracking of rubber seed oil to liquid fuels has been investigated. The reac-tion was performed with sulfuric acid as catalyst at temperatures of 350-450 oC and the ratio of oil-catalyst of 0-2 wt.% for 30-90 minutes. Kinetics was studied using the model of 6-lump parameters. The parameters were rubber seed oil, gasoline, kerosene, diesel, gas, and coke. Analysis of experimen-tal data using regression models to obtain reaction rate constants. Activation energies and pre-exponential factors were then calculated based on the Arrhenius equation. The simulation result illus-trated that the six-lump kinetic model can well predict the product yields of rubber seed oil catalytic cracking. The product has high selectivity for gasoline fraction as liquid fuel and the smallest amount of coke. The constant indicates that secondary reactions occurred in diesel products compared to gaso-line and kerosene. The predicted results indicate that catalytic cracking of rubber seed oil had better be conducted at 450 oC for 90 minutes using 0.5 wt.% catalyst. © 2015 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0)

25 May 2017 in Jurnal Rekayasa Kimia & Lingkungan
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WRWara Dyah Pita Rengga
Wara Dyah Pita Rengga
WHWidya Prita Hapsari
Widya Prita Hapsari
DADwi Wahyu Ardianto
Dwi Wahyu Ardianto
AbstrakNanoteknologi pada pembuatan material difungsikan untuk membuat kemampuan terhadapa katalis dan antibakteri semakin meningkat dan mengurangi jumlah sediaan logam. Nanopartikel tembaga salah satu nanopartikel yang berperan sebagai katalis dan anti bakteri yang digunakan di bidang non-pangan dan kesehatan karena Tembaga termasuk logam yang stabil namun beracun. Perkusor yang digunakan adalah CuNO3. Ekstrak bunga cengkeh sebagai bioredukto didapat dari ekstraksi serbuk bunga cengkeh dengan aquades yang dilakukan suhu 80oC selama 30 menit. Nanopartikel tembaga dibuat melalui prinsip kimia hijau dengan metode reduksi. Volume larutan bioreduktor dan prekursor dicampur dengan rasio 1 : 1; 1 : 2; 1 : 3; dan 1 : 4. Hasil nanopartikel tembaga berwarna coklat kehijauan dan dikarakterisasi untuk mendapatkan nanopartikel tembaga dengan ukuran nanopartikel terkecil dan distribusi ukuran yang lebih homogen dan jenis nanopartikel yang didapat. Analisi yang digunakan adalah GCMS untuk mengetahui kadar eugenol dalam ekstrak bunga cengkeh, XRD untuk menentukan jenis nanopartikel tembaga, dan TEM untuk mengetahui ukuran nanopartikel tembaga. Nanopartikel tembaga yang didapat dari sintesis adalah serbuk berwarna coklat kehijauan. Bioreduktor ekstrak bunga cengkeh mengandung eugenol sebesar 79,41% yang berperan sebagai reduktor. Nanopartikel tembaga yang diperoleh adalah nanopartirkel kembaga Cuo dengan bentuk kristal Face Centered Cubic. Ukuran nanopartikel tembaga mencapai 10,39 pada rasio 1 : 1 merupakan ukuran terkecil dibandingkan rasio 1 : 2, 1 : 3, dan 1 : 4. Ukuran tersebut terdistribusi ukuran partikel .