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Journal : ASEAN Journal of Chemical Engineering

Production of Polyhvdroxyalkanoates from Synthetic Wastewater Using Sequencing Batch Reactors in On-Off Sequences Tjandra Setiadi; Herriyanto Ronny Sondjaja; Bambang Veriansyah
ASEAN Journal of Chemical Engineering Vol 4, No 1 (2004)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4288.881 KB) | DOI: 10.22146/ajche.50844

Abstract

The biosynthesis of polyhydroxyalkanoates (PHAs) using activated sludge as cultureorganism from tapioca synthetic wastewater has been studied in a 6L sequencing batch reactor (SBR). It was found that longer aeration time caused greater chemical oxygen demand (COD) reduction but did not achieve the maximum PHA-production rate. The application of on-off sequences, however, gave an acceptable PHA- productivity rate at 0.1033 gPHA L-1 h-1 and a high storage yield of up to 0.32 gPHNg biomass, although it caused a decrease in pH and affected sludge stability. The on-off variation also produced a higher valerate copolymer content, in the range of 16.44-22.48 % for Run 1 and of 13.09-14.09 % for Run 2, compared to the customary aerated-unaerated variations. The study indicates that the use of on-off SBR sequences may be suitable for obtaining high PHA-storage yields.
Co-Authors Abdul Aziz Abdul Haris Mulyadi Achmad Ali Syamsuriputra Adi Pancoro Agus Jatnika Effendi Al-Aziz, Rd. Habib R. M. T. Andi Trirakhmadi Ardiyan Harimawan Awalina Satya Bambang Veriansyah Bork Ilsemann Choerudin, Choerudin Cornelius Damar Hanung D Desiana Damir Brdjanovic Damir Brdjanovic David Rusdi Dennis Farina Nury Devianto, Hary Dewinka Anugeraheni Diah Meilany Diah Meilany Dian Shofinita Efri Mardawati Elis Sofianti Elis Sofianti Elis Sofianti ESMIRALDA Esmiralda EVELYN EVELYN Gadis Sri Haryani H Haryono Harimawan, Ardiyan Hendro Risdianto Hendro Risdianto Hendro Risdianto Hendro Risdianto Hendro Risdianto Hendro Risdianto Herriyanto Ronny Sondjaja I G B N Makertihartha I.G.B Ngurah Makertihartha Ibnu Maulana Hidayatullah Ilsemann, Bork Indrie Ratnasari Istiqomah, Noviani Arifina Khairul Hadi Burhan M.T.A.P. Kresnowati Made Tri Ari Penia Kresnowati Made Tri Ari Penia Kresnowati Martha Aznury Martha Aznury Mike Reich Mindriany Syafila Muhammad Zulfikar Luthfi Mukti, Rendy Prayatni Soewondo Prayatni Soewondo Pusparizkita, Yustina Metanoia Rd. Habib R. M. T. Al-Aziz Reich, Mike Ronald Osmond Rusdi, David Satya, Awalina Schmahl, Wolfgang Shofinita, Dian Sri H. Suhardi Sri Harjati Suhardi Sri Harjati Suhardi Sri Harjati Suhardi Sri Harjati Suhardi Sri Haryani, Gadis Suhendri Suhendri Suraya Suraya Tan Mellisa Tantra Tantra, Tan Mellisa Thye Yoke Pean Thye Yoke Pean Trimaharika Widarena Wardono Niloperbowo Wita Dewi Sondari Wolfgang Schmahl Yustina Metanoia Pusparizkita