The Use of Liquid Waste of Tofu Industry for Biogas Production Using an Anaerobic Digester

Soeprijanto Soeprijanto, Vicky Aditia Tristanto, Moch Revandra, Ervina Rosanita Rohmah, Harits Eka Febrianto


The liquid waste of tofu industry is a component which is disposed of into the environment can cause foul odour, disease, water pollution. The liquid waste of the tofu industry contains high organic ingredients, in the form of protein, carbohydrates, and fat. Protein compounds have the largest amount. Therefore, the waste        can be processed as alternative biogas energy. This aims of the study were to determine how to process tofu     industrial waste water using an anaerobic digester to produce biogas. Biogas production includes three stages. Phase I was to prepare a set of a biogas digester. Stage II was mixing tofu liquid waste and cow dung with a weight ratio of 1:1 and entering it into the digester then analyzing the raw material in the form of COD. Stage III was a continuous fermentation process in a 60-day digester where the variables used were HRT 30 and 20 days of operation. Analysis of raw material for tofu waste in the form of COD was 7,546 mg         O2/l. The results showed that an average volume of biogas produced was 1,815 ml/day for HRT of 30 days, followed by the biogas production of 2,750 ml/day for HRT of 20 days, respectively.


cow dung; biogas; anaerobic digester; tofu liquid waste.


APHA, AWWA and WPCF. Standard methods for the examination of water and wastewater, 19th Ed. American Public Health Association. Washington D.C. 1995.

Budy Rahmat, Tedi Hartoyo and Yaya Sunarya. Biogas production from tofu liquid waste on treated agricultural wastes. American Journal of Agricultural and Biological Sciences 2014; 9 (2): 226-231.

Charles W., Walker L. and Cord-Ruwisch R. Effect of pre-aeration and inoculum on the start-up of batch thermophilic anaerobic digestion of municipal solid waste. Bioresour. Technol. 2009; 100: 2329–2335.

Lastella G., Testa C., Cornacchia G., Notornicola M., Voltasio F. and Sharma V. K. Anaerbic digestion of semi-solid organic waste: biogas production and its purification. Energy Conserv. Manage 2002; 43: 63–75.

Lata K., Rajeshwari K. V., Pant D. C. and Kishore V. V. N. Volatile fatty acid production during anaerobic mesophilic digestion of tea and vegetable market wastes. W. J. Microbiol. Biotechnol. 2002; 18: 589–592.

M. Faisal M, Asri Gani1, Farid Mulana and Hiroyuki Daimon. Effect of organic loading on production of methane from tofu wastewater treated by thermophilic stirred anaerobic reactor. RASAYAN J. Chem. 2016; 9(2): 133 – 138.

Park C., Lee C., Kim S., Chen Y. and Chase H.A. Upgrading of anaerobic digestion by incorporating two different hydrolysis processes. J. Biosci. Bioeng. 2005; 100: 164–167.

Soeprijanto. Teknologi Biogas Sebagai Energi Terbarukan. ITS PRESS, Surabaya, 2019.

Soeprijanto, Tantowi Ismail, Murtina Dwi Lastuti and Bernadeta Niken. Treatment of vinasse from alcohol industrty wastewater into biogas using upflow anaerobic sludge blanket (UASB) bioreactor. Jurnal Purifikasi. 2010; 11(1): 11 – 20.


  • There are currently no refbacks.