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Sri Purwati
Balai Besar Pulp dan Kertas, Bandung
Education

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EFEKTIVITAS APLIKASI ENZIM DALAM SISTEM LUMPUR AKTIF PADA PENGOLAHAN AIR LIMBAH PULP DAN KERTAS (NZYME APPLICATION’S EFFECTIVITY ACTIVED SLUDGE SYSTEM OF PULP AND PAPER’S MILL WASTEWATER TREATMENT) Syamsudin .; Sri Purwati; Andri Taufick Rizaludin
JURNAL SELULOSA Vol 43, No 02 (2008): BERITA SELULOSA
Publisher : Center for Pulp and Paper

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5016.477 KB) | DOI: 10.25269/jsel.v43i02.156

Abstract

Oil spill can contaminate the environment as a consequence of activities related to crud oil exploration, oil refinery, transportation, pipeline leaking, and industrial process. This research related with the characteristics of coir dust as oil sorbent material to remove all from water. Hydrophobycity is an important parameter that determines the effectiveness of the oil sorbent. Some treatments were done in this research to increase tho hydrophobycity of coir dust. Moreover, these treatments were expected to improve oil sorption capacity of coir dust. They are heating and acetylation process. The result showed both of heating and acetylation could increase hydrophobycity and oil sorption capacity onto coir dust.Keywords: coir dust, hydrophobic, oil sorption capacity, sorbent, lignocelluloseINTISARI Tumpahan minyak dapat mencemari lingkungan sebagai konsekuensi dari aktivitas-aktivitas eksplorasi minyak bumi, penghilangan minyak, kecelakaan transportasi, kebocoran pipa, dan proses industri. Penelitian ini berhubungan dengan karakteristik coir dust sebagai bahan penyerap (sorben) minyak untuk menyisihkan cemaran minyak dalam air. Hidrofobisitas (sifat tidak suka air) merupakan parameter penting yang menentukan efektivutas sorben tersebut. Pada penelitian ini dilakukan beberapa perlakuan, baik secara fisik maupun kimia untuk meningkatkan hidrofobisitas coir dust. Perlakuan-perlakuan yang dimaksud adalah pemanasan dan proses asetilasi. Hasil penelitian menunjukan bahwa proses pemanasan dan asetilasi dapat meningkatkan hidrofobisitas dan kapasitas penyerapan minyak pada coir dust.Kata kunci: coir dust, hidrofobik, kapasitas penyerapan minyak, sorben, lignoselulosa.
SOLIDIFIKASI DEINKING SLUDGE DAN FLY ASH BATU BARA UNTUK PEMENUHAN PERSYARATAN PENIMBUNAN DI LANDFILL Krisna Adhitya Wardhana; Sri Purwati; Saepulloh ,; Toni Rachmanto
JURNAL SELULOSA Vol 1, No 02 (2011): JURNAL SELULOSA
Publisher : Center for Pulp and Paper

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (499.54 KB) | DOI: 10.25269/jsel.v1i02.25

Abstract

Deinking sludge and coal fly ash are classified as hazardous wastes that have to be treated before disposed in landfill. Solidification is an alternative treatment to prevent hazardous materials release to the environment. The research was conducted to find solidification combination formula of deinking sludge and coal fly ash that pass compressive strength test (>10ton/m2) and paint filter test so it can be disposed to landfill. The concretes were made from cement and aggregate (50% deinking sludge and 50% fly ash) on range combination 1:11 - 1:20. In addition, based on pozzolanic characteristic of fly ash, concretes without cement was made. The results showed that solidification products with combination 1:11 - 1:20 have compressive strength that exceed the regulation and passed paint filter test. Combination of 50% deinking sludge and 50% coal fly ash without portland cement addition had compressive strength that met requirement for landfill disposal.Key words : deinking sludge, fly ash, solidification, landfill ABSTRAKDeinking sludge dan fly ash batubara termasuk kedalam kategori limbah B-3 yang harus diolah terlebih dahulu sebelum ditimbun di landfill. Proses solidifikasi adalah salah satu pengolahan untuk mencegah tersebarnya kandungan limbah B-3 ke lingkungan. Tujuan dari penelitian ini adalah menentukan formulasi solidifikasi kombinasi deinking sludge dengan fly ash batubara yang memenuhi persyaratan kuat tekan (> 10 ton/m2) dan uji paint filter sehingga dapat ditimbun di landfill. Penelitian ini dilakukan dengan variasi perbandingan semen terhadap agregat (50% fly ash dan 50% deinking sludge) mulai dari 1:11 sampai dengan 1:20 dan juga dilakukan perlakuan agregat tanpa semen. Hasil penelitian menunjukkan bahwa komposisi 1:11 s/d 1:20 memiliki nilai kuat tekan yang jauh melebihi persyaratan dan lolos uji paint filter. Sedangkan hasil dari perlakuan tanpa semen menunjukkan bahwa kombinasi 50% deinking sludge dan 50% fly ash batubara telah memiliki nilai kuat tekan yang cukup besar dan memenuhi persyaratan penimbunan di landfill.Kata kunci : deinking sludge, fly ash batubara, solidifikasi, landfill 
PENINGKATAN EFEKTIVITAS PENGOLAHAN AIR LIMBAH PROSES PEMUTIHAN PULP DENGAN REAKTOR UP-FLOW ANAEROBIC SLUDGE BLANKET (UASB) DAN LUMPUR AKTIF TERMOBILISASI (INCREASING THE EFFECTIVITY PULP BLEACHING PROCESS EFFLUENT TREATMENT BY UP-FLOW ANAEROBIC SLUDGE BLANKET (UASB) AND MOBILIZED ACTIVATED SLUDGE REACTORS) Yusup Setiawan; Sri Purwati; Rina S Soetopo; Kristaufan Joko Pramono
JURNAL SELULOSA Vol 43, No 02 (2008): BERITA SELULOSA
Publisher : Center for Pulp and Paper

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4733.273 KB) | DOI: 10.25269/jsel.v43i02.155

Abstract

Treatment of pulp bleaching effluent using upflow anaerobic sludge blanket (UASB) and suspended carrier Biofilm (SCB) system have been carried out. Upflow Anaerobic Sludge Blanket (UASB) and suspended carrier Biofilm (SCB) reactors were run on the Hydraulic Retention Time (HRT) of 12 hours, respectively. Micronutrient solution containing some traces elements was added into feed wastewater of UASB reactor to accelerate the growth of granular sludge. Sludge characteristics of UASB and activated sludge reactors were observed and analyzed. Settling rate of granular sludge in UASB reactors was also mesured. Effluent of UASB reactor was treated further in Suspended Carrier Biofilm (SCB) reactor.Concentration of COD, TSS and AOX parameters both influent and effluent of UASB reactor as well as suspended carrier biofilm (SCB) reactor were analyzed. Result revealed that UASB reactor run on the Hydraulic Retention Time (HRT) of 12 hours could remove COD up to 90%, TSS up to 91% and AOX up to 84%. Addition of micronutrient solution has accelerated the growth of granular sludge. Dark-brownesh color of granular sludge with the diameter of 1-4 mm having settling rate of 70-120 m/hr has been formed. SCB reactor as post treatment could remove COD of 85%, TSS of 73% and AOX of 76%. Sequential UASB and SCB reactor could increase the effectivity of pulp and paper mill wastewater treatment with the removal of dissolved and suspended organic pollutant more than 94%.Key words: AOX, COD, activated sludge, granular sludge, UASB.INTISARI Pengolahan air limbah proses pemutihan pulp dengan system Upflow Anaerobic Sludge Blanket (UASB) dan lumpur aktif termobilisasi telah dilakukan. Reaktor (UASB) dan lumpur aktif termobilisasi masin-masing dioperasikan pada waktu tinggal 12 jam. Larutan micronnutrisi yang mengandung ion-ion logam dalam jumlah sedikit ditambahkan ke dalam umpan reactor UASB untuk mempercepat pertumbuhan lumpur granul. Karakteristik lumpur reaktor UASB diamati dan dianalisa. Kecepatan pengendapan lumpur granul juga diukur. Efluen reactor UASB diolah lebih lanjut dalam reactor lumpur aktif termobilisasi. Parameter COD, TSS dan Adsorbable Organic Halies (AOX) menunjukan bahwa pada waktu tinggal 12 jam, reaktor UASB dapat mereduksi COD 90%, TSS 91% dan AOX 84%. Penambahan larutan mikronutrisi berpengaruh signifikan terhadap pertumbuhan mikroganisme dalam membentukan lumpur granul. Lumpur granul yang terbentuk berdiameter 1-4 mm berwarna hitam kecoklatan memiliki kesepatan 70-120 m/jam. Pengolahan lanjutan dengan sistem lumpur aktif termobilisasi masing-masing dapat mereproduksi COD 85%, TSS 73% dan AOX 76%. Sistem pengolahan air limbah gabungan rector UASB dan lumpur aktif termobilisasi dapat meningkatkan efektifitas pengolahan air limbah industri pulp dan kertas dengan reduksi pencemar organik terlarut dan tersuspesi lebih besar dari 94%.Kata kunci : AOX, COD, lumpur aktif, lumpur granul, UASB 
Co-Authors Andri Taufick Rizaludin Krisna Adhitya Wardhana Kristaufan Joko Pramono Rina S Soetopo Saepulloh , Syamsudin . Toni Rachmanto Yusup Setiawan