Irma Suraya 08 0405 001
Universitas Sumatera Utara
DAFTAR PUSTAKA
Agitya. 2008. Biohidrogen sebagai Bahan Bakar Masa Depan. http://www.bioinsideblogspot.com. Diakses pada 20 Februari 2012.
Amend JP, Shock EL. 2001. Energetics of overall metabolic reactions of thermophilic and hyperthermophilic Archaea and Bacteria. Fems
Microbiology Reviews 25(2):175-243.
Anizar. 2008. Keselamatan dan Kesehatan Kerja di Industri. Departemen Teknik Industri Fakultas Teknik Universitas Sumatera Utara. Medan.
Asada Y and Mijake Y. 1999. Photobiological Hydrogen Production. Journal of Bioscience and Bioengineering 88:1-6.s
Aryati, Dyan, Audra Ayu O. dan, Vincensia. 2010. Biogas Production Using Anaerobic Biodigester From Cassava Starch Effluent With Ruminant
Bacteria As Bicatalyst. Tugas Akhir S1, Jurusan Teknik Kimia UNDIP.
Bank Mandiri. 2012. Suku Bunga Dasar Kredit (Prime Lending Rate) PT Bank Mandiri (Persero) Tbk. http://www.bankmandiri.co.id/...pdf/. Tanggal akses
4 juni 2012.
Bapedal SUMUT. 2008. Laporan Akhir Bidang Pengendalian Pencemaran Lingkungan.
Barnes, Matthew. 2004. LZ-129, Hindenburg. The Great Zeppelins. http://www.ciderpresspottery.com/ZLA/greatzeps/german/Hindenburg.html. Bej,Barnali, R K Basu dan S N Ash. Kinetic studies on acid catalysed hydrolisi of
starch. Journal of Scientific & Industrial Research. Vol.67, April
2008.p.295-298.
Benemann J. 1996. Hydrogen Biotechnology: Progress and Prospect. Nature Biotechnology 14:1101-1103.
Benemann J. and Hallenbeck PC,.2002. Biological hydrogen production; fundamentals and limiting processes. Int J Hydrogen Energy.
Bernasconi. 1995. Teknologi Kimia. Jakarta : Pradnya Paramita.
Block, Matthias. 2004. Hydrogen as Tracer Gas for Leak Detection. 16th WCNDT
Irma Suraya 08 0405 001
Universitas Sumatera Utara
Brownell, L.E. dan Young E.H. 1959. Process Equipment Design. New Delhi. Wiley Eastern Ltd.
Busby RL. 2005. Hydrogen and Fuel Cells: A Comprehensive Guide. 1st edition. Penn Well Corporation, Tulsa, U.S.page 445.
Caldicellulosiruptor saccharolyticus and Thermotoga elfii. International Journal of Hydrogen Energy 27(11-12):1391-1398.
Chang J-S,Lee K-S, Lin P-J. 2002. Biohydogen production with fixed-bed bioreaktor, Int J Hydrogen Energy. 27 : p. 167-174.
Chong, Mei Ling and Sabaratnam, Vikineswary and Shirai, Yoshihito dan Hassan,
Mohd Ali. 2009. Biohydrogen Production by Clostridium butyricum from Palm Oil Mill Effluent. International Journal of Hydrogen Energy 34:p.
764-771.
Chen CC, Lin CY, Chang JS. 2001. Kinetics of hydrogen production with continuous anaerobic cultures utilizing sucrose as the limiting substrate. Applied
Microbiology and Biotechnology 57(1-2):56-64.
Chemistry Operations. 2003. Hydrogen. Los Alamos National Laboratory.
Considine, Douglas M. 1985. Instruments and Controls Handbook. 3rd Edition. USA: McGraw – Hill, Inc.
Craven SE. 1988. Increased Sporulation of Clostridium-Perfringens in a Medium Prepared with the Prereduced Anaerobically Sterilized Technique or with
Carbon-Dioxide or Carbonate. Journal of Food Protection 51(9):700-706.
Culp, R. R.; Wesner, G. M.; Culp, G. L. (1978) Handbook of Advanced Wastewater Treatment. Van Nostrand Reinhold: New York.
Das D,Veziroglu TN. 2001. Hydrogen production by biological processes: a survey of literatur. International Journal of Hydrogen Energy 26:13-28.
Dawei,Liu. Biohydrogen Production by Dark Fermentation from Organic Wastes and Residues. Thesis Department of Enviromental Engineering. Technical
University of Denmark. 2008.
Ditjen PPHP. Pedoman Pengelolaan Limbah Industri Kelapa Sawit. Subdit Pengelolaan Lingkungan Direktorat Pengelolaan Hasil Pertanian.
Irma Suraya 08 0405 001
Universitas Sumatera Utara
Degremont., 1991, Water Treatment Handbook. Sixth Edition. France : Lavoisier Publishing.
Dunn, C. William. 2005. Fundamentals of Industrial Instrumentation and Process Control. McGraw-Hill Companies, Inc.
Durgutlu, Ahmet. 2003. Experimental investigation of the effect of hydrogen in argon as a shielding gas on TIG welding of austenitic stainless steel.
ScienceDirect (Ankara, Turkey: Gazi University) 25 (1): 19–23.
Dong GX, Wu BR, Zhu L, Du J. 2007. Microstructure and electrochemical properties of low-temperature hydrogen storage alloy used in Ni/MH
batteries. Transactions of Nonferrous Metals Society of China.
Egon Wildermuth, Hans Stark, Gabriele Friedrich, Franz Ludwig Ebenhöch, Brigitte Kühborth, Jack Silver, Rafael Rituper. 2005. Iron Compounds. in Ullmann’s Encyclopedia of Industrial Chemistry Wiley-VCH, Wienheim,
Emsley, John. 2001. Oxygen. Nature's Building Blocks: An A-Z Guide to the Elements. Oxford, England, UK: Oxford University Press. pp. 297–304. ISBN 0-19-850340-7.
Rohm dan hass. Engineering Manual for The Amberlite Ion Exchange Resins. Philadelphia,PA.p.22.
European Union.Report from the Commission on Dietary Food Additive Intake (PDF). http://ec.europa.eu/food/fs/sfp/addit_flavor/flav15_en.pdf.
Foglia D., Ljunggren M., Wukovits W., Friedl A., Zacchi G., Urbaniec K. And Markowski M., 2010a, Integration Studies on a Two-Stage Fermentation Process for the Production of Biohydrogen. Journal of Cleaner Production.
Foglia D., Wukovits W., Friedl A., Ljunggren M., Zacchi G., Urbaniec K. And Markowski M. 2010b. Effects of feedstock on the process integration of biohydrogen production. Chemical Engineering Transactions. 1153-1158.
Foglia D., Wukovits W., Friedl A., Ljunggren M., Zacchi G., Urbaniec K. And Markowski M.. 2011. Effects of feedstock on the process integration of biohydrogen production. Clean Technologies and Environmental Policies Journal.
Irma Suraya 08 0405 001
Universitas Sumatera Utara
Geankoplis, Christie J. 2003. Transport Processes and Separation Process Principles (Includes Unit Operations). Edisi ke-4. New Jersey : Prentice Hall.
G. Wilkinson.1963. Ferrocene. Org. Synth.; Coll. Vol. 4: 473
Hawkes FR, Dinsdale R, Hawkes DL, Hussy I. 2002. Sustainable fermentative hydrogen production: challenges for process optimisation. International
Journal of Hydrogen Energy 27(11-12):1339-1347.
Hawkes FR, Hussy I, Kyazze G, Dinsdale R, Hawkes DL. 2007. Continuous dark fermentative hydrogen production by mesophilic microflora: Principles and
progress. International Journal of Hydrogen Energy 32(2):172-184.
Hallenbeck PC. 2005. Fundamentals of the fermentative production of hydrogen. Water Science and Technology 52(1-2):21-29.
Hallenbeck PC, Ghosh D. 2009. Advances in fermentative biohydrogen production: the way forward?. Trends Biotechnol.
Han SK, Shin HS. 2004. Biohydrogen production by anaerobic fermentation of food waste. International Journal of Hydrogen Energy 29(6):569-577.
Hardy, Walter N. 2003. From H2 to cryogenic H masers to HiTc superconductors: An unlikely but rewarding path. Physica C: Superconductivity. Vancouver,
Canada: University of British Columbia. 388–389: 1–6.
H.Barutu. 2011. Kajian Debit Aliran Sungai dan Sedimen Melayang serta Arahan Penggunaan Lahan pada Tiga Outlet Sub DAS di Kawasan Hulu DAS
Padang. Repository USU.
H.Koku. I.Eroglu, U. Gunduz, M.Yucel, L.Turker. 2002. Aspects of the metabolism of hydrogen production by Rhodobacter capsulatus. Int. J.Hydr.Energy.,27 :
1315-1329.
H. Schultz, G. Bauer, E. Schachl, F. Hagedorn, P. Schmittinger. 2005. Potassium Compounds. in Ullmann’s Encyclopedia of Industrial Chemistry. Wiley-VCH, Weinheim.
Hoffman P. 2002. Tomorrow’s Energy: Hydrogen, Fuel Cells, and The Prospects for A Cleaner Planet. The MIT Press, London, U.K. page : 289.
Irma Suraya 08 0405 001
Universitas Sumatera Utara
http://www.mahler-ags.com/hydrogen/index.htm. Diakses pada 20 Februari 2012. http://www.h2carblog.com/.2009. Diakses pada 2 September 2012.
Huang CY, Patel BK, Mah RA, Baresi L. 1998. Caldicellulosiruptor owensensis sp.nov., an anaerobic, extremely thermophilic, xylanolytic bacterium.
International Journal of Systematic Bacteriology 48:91-97.
ICIS Pricing. 2011. Chemical. http://www.icis.com/. Diakses tanggal 1 September 2012
Indramurti inc.2012. Product. http://kornkers.en.busytrade.com/. Diakses tanggal 1 September 2012
Jones DT, Woods DR. 1986. Acetone-Butanol Fermentation Revisited. Microbiological Reviews 50(4):484-524.
Kee Lam and Keat Teong Lee. Renewable and sustainable bioenergies production from palm oil mill effluent (POME) : Win-win strategies toward better
environmental protection. Biotechnology Advances 29. 2011. p. 124-141.
Kadar Z, De Vrijek T, van Noorden GE, Budde MAW, Szengyel Z, Reczey K, Claassen PAM. 2004. Yields from glucose, xylose, and paper sludge hydrolysate during hydrogen production by the extreme thermophile
Caldicellulosiruptor saccharolyticus. Applied Biochemistry and Biotechnology 113-16:497-508.
Kawamura. 1991. An Integrated Calculation of Wastewater Engineering. New York : John Wiley&Sons Inc.
Kim IS, Hwang MH, Jang NJ, Hyun SH, Lee ST. 2004. Effect of low pH on the activity of hydrogen utilizing methanogen in bio-hydrogen process.
International Journal of Hydrogen Energy 29(11):1133-1140.
Kern, Donald Q. 1965. Process Heat Transfer. Singapore : McGraw Hill Book Company.
Kloeppel J, Rogerson S. The Hydrogen Economy. Electronics World & Wireless World 97(1666):1991.p.668-671.
Irma Suraya 08 0405 001
Universitas Sumatera Utara
Koskinen, Perttu. 2008. The Development and Microbiology of Bioprocesses for the Production of Hydrogen and Ethanol by Dark Fermentation. Tampere
University of Technology. Publication 751.
Kotay, S.M., Das, D. 2010. Microbial hydrogen production from sewage sludge bio-augmented with a constructed microbial consortium. Int. J. Hydrogen
Energy, 35, 10653-59.
Lay JJ, Fan KS, Chang J, Ku CH. 2003. Influence of chemical nature of organic wastes on their conversion to hydrogen by heat-shock digested sludge.
International Journal of Hydrogen Energy 28(12):1361-1367.
Lee MJ, Zinder SH. 1988. Hydrogen Partial Pressures in a Thermophilic Acetate-Oxidizing Methanogenic Coculture. Applied and Environmental Microbiology.54(6):1457-1461.
Lee YJ, Miyahara T, Noike T. 2001. Effect of iron concentration on hydrogen fermentation. Bioresource Technology 80(3):227-231.
Leiby, S.M. 1994.Options for Refinery Hydrogen. SRI Report No. 212. Menlo Park, CA.
Levin DB, Pitt L, Love M. 2004. Biohydrogen production: prospects and limitations to practical application. International Journal of Hydrogen Energy
29(2):173-185.
Liang T-M. 2003. Application of membrane separation on anaerobic hydrogen producing process. Phd Thesis Department of environmental engineering,
national Cheng Kung University.
Lide, D. R., ed. 2005. CRC Handbook of Chemistry and Physics. 86th ed. Boca Raton (FL): CRC Press. p. 4-80. ISBN 0-8493-0486-5
Lin CY, Lay CH. 2004. Carbon/nitrogen-ratio effect on fermentative hydrogen production by mixed microflora. International Journal of Hydrogen
Energy.29(1):41-45.
Liu DW, Liu DP, Zeng RJ, Angelidaki I. 2006. Hydrogen and methane production from household solid waste in the two-stage fermentation process. Water
Research 40(11):2230-2236.
Irma Suraya 08 0405 001
Universitas Sumatera Utara
of organic household solid waste under extreme-thermophilic temperature
(70°C). Biotechnology and Bioengineering Accepted.
Li C and Fang HHP. 2007. Fermentative Hydrogen Production from Wastewater and Solid Wastes by Mixed Cultures. Critical Reviews in Enviromental Science and Technology 37:1-39.
Madura, Jeff. 2000. Introduction to Business.2nd Edition. USA: South-Western College Publishing.
Mahajoeno E. Limbah Pabrik Kelapa Sawit dibuat untuk Energi Terbarukan. http://www.alpensteel.com. Diakses pada 15 Juni 2011.
Mahreni dan Adi Ilcham. Pengembangan Teknologi Bersih Berbasis Hidrogen menggunakan Sumber Daya Alam Indonesia. Teknik Kimia. Universitas
Pembangunan Nasional.2011.
Mahyudin dan Koesnandar. 2006. Biohydrogen Production : Prospects and Limitations To Practical Application. Akta Kimindo Vol.1 No.2 April 2006.
p.73-78.
McCabe, Warren L,. Julian C. Smith, dan Peter Harriot. 1999. Unit Operations of Chemical Engineering. Edisi ke-5. Singapore : McGraw-Hill Book Co.
Mann, M.1995. Technical and Economic Assessment of Producing Hydrogen by Reforming Syngas from the Battelle Indirectly Heated biomass Gasifier.
Golden, Colorado : National Renewable Energy Laboratoy. NREL Report. Mizuno O, Dinsdale R, Hawkes FR, Hawkes DL, Noike T. 2000. Enhancement of
hydrogen production from glucose by nitrogen gas sparging. Bioresource
Technology 73(1):59-65.
Merck Millipore. 2012. Product. http://www.merckmillipore.com/. Diakses pada 28 Juni 2012.
Metcalf dan Eddy. 1991. Wastewater Engineering Treatment, Disposal, Reuse. New Delhi: McGraw-Hill Book Company.
Menteri Tenaga Kerja dan Transmigrasi Republik Indonesia. 2004. Waktu kerja lembur dan Upah Kerja Lembur.
Irma Suraya 08 0405 001
Universitas Sumatera Utara
MSDS certified lye. MSDS Sodium Hydroxide. 2008. http://www.certified-lye.com/MSDS-Lye.pdf. Diakses pada 28 Mei 2012.
MSDS Sciencelab, 2008. MSDS Sodium Chloride. http://www.sciencelab.com/msds. Diakses pada 11 Juli 2012.
MSDS Sciencelab, 2010. MSDS Sodium Phosphate.
http://www.sciencelab.com/msds. Diakses pada 28 Mei 2012.
MSDS Sciencelab, 2010. MSDS Magnesium Chloride Hexahydrate. http://www.sciencelab.com/msds. Diakses pada 15 Juni 2012.
MSDS Sciencelab, 2010. MSDS Potassium Carbonate. http://www.sciencelab.com/msds. Diakses pada 11 Juli 2012.
MSDS Sciencelab, 2012. MSDS Water. http://www.sciencelab.com/msds. Diakses pada 11 Juli 2012.
Naibaho, P.M.1966. Teknologi Pengolahan Kelapa Sawit. Medan: Pusat Penelitian. Nath K, Kumar A, Das D. 2006. Effect of some environmental parameters on
fermentative hydrogen production by Enterobacter cloacae DM11. Canadian
Journal of Microbiology 52(6):525-532.
Nakashimada Y, Nakae K, Nishio N. 1999. Inhibitory effect of acetic acid on growth of hyperthermophilic archaeon Pyrococcus furiosus. Journal of Bioscience
and Bioengineering 87(2):155-160.
Nalco. 1988. The Nalco Water Handbook. 2nd Edition. New York: McGraw-Hill Book Company.
Novaviro, 2010. Design, Supply, Fabrication, Installation, Testing and Commissioning Of A POME Biogas-Capture Anaerobic Digester System.
Novaviro Technology Sdn Bhd.
Oh YK, Kim SH, Kim MS, Park S. 2004. Thermophilic biohydrogen production from glucose with trickling biofilter. Biotechnology And Bioengineering
88(6):690-698.
Okamoto M, Miyahara T, Mizuno O, Noike T. 2000. Biological hydrogen potential of materials characteristic of the organic fraction of municipal solid wastes.
Water Science and Technology 41(3):25-32.
Irma Suraya 08 0405 001
Universitas Sumatera Utara
P.Atkins dan J.de Paula. 2006. Physical Chemistry, 8th edn. p.1000.
Peters, M.S, Klaus D. Timmerhaus dan Ronald E. West. 2004. Plant Design and Economics for Chemical Engineer. 5th Edition. International Edition. Singapura : McGraw – Hill.
Perry, Robert H. Dan Dow W. Green. 1999. Chemical Engineering Handbook. 7th edtion. New York : McGraw-Hill Book Company.
PT. Brataco Chemical (Bratachem). 2011. Price Product List. Jakarta.
PT. Tahoma Mandiri. 2012. Katalog Produk. http://tohoma.indonetwork.co.id/prod. Diakses pada 28 Juni 2012.
PT. Pertamina, 2012. http://www.pertamina.com. Diakses tanggal 1 September 2012. PT. Prudential Life Indonesia, 2012. Prufast – Start Training : Product Knowledge. Rahman. Biogas Sumber Energi Alternatif. http://www.energi.lipi.go.id. 2005.
Diakses pada 15 Juni 2011.
Reina.2011. Proses Produksi. http://herdhianies413.blogspot.com/2011/02/pkn-bab-iv.html. Diakses 3 Juli 2012.
Reith JH, Wijffels RH, Barten H, editors. 2003. Status and perspectives of biological methane and hydrogen production. Dutch Biological Hydrogen Foundation;
103–23.
Reklaitis,G.V. 1983. Introduction to Material and Energy Balance. New York: McGraw-Hill Book Company.
Rusjdi, Muhammad. 2004. PPN dan PPnBM : Pajak Pertambahan Nilai dan Pajak Atas Barang Mewah. Jakarta: PT. Indeks Gramedia.
Rusjdi, Muhammad. 2004. PPh Pajak Penghasilan. Jakarta: PT. Indeks Gramedia. Romagnoli, Jose A. dan Ahmet Palazoglu. 2012. Introduction to Process Control.
New York : Marcel Dekker/CR.
Sahlstrom L. 2003. A review of survival of pathogenic bacteria in organic waste used in biogas plants. Bioresource Technology 87(2):161-166.
Santoso, Urip. 2009. Produksi Biogas Melalui Pemanfaatan Limbah Cair Pabrik Minyak Kelapa Sawit dengan Digester Anaerob. http://www.uwityangyoyo.
Irma Suraya 08 0405 001
Universitas Sumatera Utara
Senafati dan Amalia Yolanda. 2011. Pengaruh Pengembalian Lumpur (Recycle Sludge) terhadap Fermentasi Limbah Cair Kelapa Sawit. Departemen Teknik
Kimia, USU.
Schroder C, Selig M, Schonheit P. 1994. Glucose Fermentation to Acetate, Co2 and H-2 in the Anaerobic Hyperthermophilic Eubacterium Thermotoga-Maritima
-Involvement of the Embden-Meyerhof Pathway. Archives of Microbiology.161(6):460-470.
Siagian, Sondang P. 1992. Fungsi-fungsi Manajerial. Jakarta : Offset Radar Jaya. Siregar, Parpen. 2009. Produksi Biogas Melalui Pemanfaatan Limbah Cair Pabrik
Minyak Kelapa Sawit dengan Digester Anaerob.
Sirossiris.2010. Biohidrogen. http://lordbroken.wordpress.com. Diakses pada 15 Februari 2012.
Smith, J.M., H.C. Van Ness dan M.M. Abbott. 2005. Introduction to Chemical Engineering Thermodynamic. 7th Edition. McGraw – Hill Book Company. New York.
Sompong O-Thong, Poonsuk Prasertsan, Nugul Intrasungkha, Sridu Dhamwichukorn and Nils-Kare Birkeland. 2007. Improvement of Biohydrogen production and treatment efficiency on palm oil mill effluent with nutrient supplementation at
thermophilic condition using anaerobic sequencing batch reactor. Enzyme
and Microbial Technology 41. Page 583-590.
Speece, R.E. 1996. Anaerobic Biotechnology for Industrial Wastewaters.: Archae Press. USA.
Special Weld. Atomic Hydrogen Welding.
http://www.specialwelds.com/underwater-welding/atomic-hydrogen welding.htm.
Stoody Industrial & Welding Supply, Inc., 2012. Carbon Dioxide CO2 - Data / Prices. www.stoodyind.com/Catalogs/. Diakses pada 10 September 2012.
Sutarto. 2002. Dasar-dasar Organisasi. Yogyakarta : Gajah Mada University Press. Syafawati Ahmad Kamal, Jamaliah Md Jahim, Nurina Anuar, Osman Hassan, Wan
Irma Suraya 08 0405 001
Universitas Sumatera Utara
Production by a Local Isolate Clostridium butyricum. Internasional Journal
on advanced Science Information Technology. Vol 2 No.4. ISSN 2088-5534 Tanisho S, Kuromoto M, Kadokura N. 1998. Effect of CO2 removal on hydrogen
production by fermentation. International Journal of Hydrogen Energy.23(7):559-563.
Tamagnini P, Axelsson R, Lindberg P, Oxelfelt F, Wunschiers R, Lindblad P. 2002. Hydrogenases and hydrogen metabolism of cyanobacteria. Microbiology and
Molecular Biology Reviews 66(1)
Temudo MF, Kleerebezem R, van Loosdrecht M. 2007. Influence of the pH on (open) mixed culture fermentation of glucose: A chemostat study.
Biotechnology and Bioengineering 98(1):69-79.
Toko Kimia Indonesia. 2012. Daftar Produk. http://www.tokokimiaindonesia.com/. Diakses pada 28 Juni 2012.
Twigg, Martyn V. 1989. Catalyst Handbook. 2nd edition.Wolfe Publishing Ltd. London.
Ulrich, Gael D., 1984. A Guide to Chemical Engeneering Prosses Design and Economics. New York : John Wiley and Sons.
Vanacova S, Rasoloson D, Razga J, Hrdy I, Kulda J, Tachezy J. 2001. Iron-induced changes in pyruvate metabolism of Tritrichomonas foetus and involvement of
iron in expression of hydrogenosomal proteins. Microbiology-Uk 147:53-62.
Valdez-Vazquez I, Rios-Leal E, Esparza-Garcia F, Cecchi F, Poggi-Varaldo HA. 2005. Semi-continuous solid substrate anaerobic reactors for H-2 production from organic waste: Mesophilic versus thermophilic regime. International
Journal of Hydrogen Energy 30(13-14):1383-1391.
Van den Bosch, P. L. F, Van Beusekom, O. C, Buisman, C. J. N.; Janssen, A. J. H. 2007. Sulfide oxidation at haloalkaline conditions in a fed-batch bioreactor. Biotechnology and Bioengineering 97. Page 1053 - 1063.
Van Ginkel S, Logan BE. 2005. Inhibition of biohydrogen production by undissociated acetic and butyric acids. Environmental Science & Technology
39(23):9351-9356.
Irma Suraya 08 0405 001
Universitas Sumatera Utara
Operated in The Thermophilic Temperature Range. International Journal of Hydrogen Energy 27: 1141-1147.
Van Niel EWJ, Budde MAW, de Haas GG, van der Wal FJ, Claasen PAM, Stams AJM. 2002. Distinctive properties of high hydrogen producing extreme thermophiles, Caldicellulosiruptor saccharolyticus and Thermotoga elfii.
International Journal of Hydrogen Energy 27(11-12):1391-1398.
Van Niel EWJ, Claassen PAM, Stams AJM. 2003. Substrate and product inhibition of hydrogen production by the extreme thermophile, Caldicellulosiruptor
saccharolyticus. Biotechnology and Bioengineering 81(3):255-262.
Walas, Stanley M. 1988. Chemical Process Equipment – Selection and Design. Boston : Reed Publishing.
Walas, Stanley M., 1990. Chemical Proses Equipment. Departement of Chemical and Petroleum Engineering. University of Kansas .
Waluyo. 2000. Perubahan Perundang-undangan Perpajakan Era Reformasi. Jakarta: Penerbit Salemba Empat.
Wiberg, Egon; Wiberg, Nils; Holleman, Arnold Frederick. 2001. Inorganic chemistry. Academic Press. p. 240. ISBN 0123526515.
Yolanda. 2011. Pra Rancangan Pabrik Pembuatan Gas Hidrogen dari Biogas Hasil Fermentasi Limbah Cair Kelapa Sawit dengan Proses Steam Methane
Reforming dengan kapasitas 1.151,094 ton/tahun. Tugas Akhir Departemen
Teknik Kimia.USU.
Yokoyama H, Moriya N, Ohmori H, Waki M, Ogino A, Tanaka Y. 2007. Community analysis of hydrogen-producing extreme thermophilic anaerobic microflora
enriched from cow manure with five substrates. Applied Microbiology and
Biotechnology 77(1):213-222.
Yoshimassa, Tomiuchi. 2010. Current Strategy of Metawater on Methane Fermentation of Palm Oil Plant Wastewater. Metawater Co.,Ltd.
