Potential and characterization biogas from tofu liquid waste with addition cow dung and effective microorganisms 4 as biocatalyst

Nurjuwita, Wideawati; Sasongko, Ashadi; Hartanto, Tan Jeremy; Purwanto, Mochammad

doi:10.1016/j.matpr.2021.02.025

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…The T50K50 and T60K40 treatments produced a suitable pH for biogas formation, namely a pH close to 7 so that biogas formation was faster. There are various kinds of bacteria in cow manure that act as decomposers, such as hydrolytic bacteria, acetogenic bacteria, and matanogenic bacteria (Nurjuwita et al, 2021). All of these bacteria play an important role as decomposers in the degradation of organic matter to produce biogas.…”

Section: Table 5 Total Production Of Biogasmentioning

confidence: 99%

Biogas Production from Tofu Liquid Waste with Cow Manure Mixture

Sudarto

Salundik²,

Soenarno³

2023

JTEP-L

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Biogas is a mixture of several gases produced from the process of overhauling organic materials by microorganisms in a state without air or anaerobically. This study aims to analyze the production and quality of biogas produced from tofu liquid waste with a mixture of cow dung. The study was conducted with 4 treatments, namely 80% liquid waste tofu and water + 20% cow dung (T80K20), 70% liquid waste tofu and water + 70% cow dung (T70K30), 60% liquid waste tofu and water + 40% dung cattle (T60K40), and 50% tofu liquid waste and water + 50% cow dung (T50K50). Each was replicated 3 times with data analysis using a completely randomized design (CRD). The highest methane gas production in the T50K50 treatment was 64,986.97 ml and the highest methane gas content in the T50K50 treatment was 43% in the sixth week. Keywords:Anaerob,Carbon dioxide,Methane,Gas production.

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Section: Table 5 Total Production Of Biogasmentioning

confidence: 99%

Biogas Production from Tofu Liquid Waste with Cow Manure Mixture

Sudarto

Salundik²,

Soenarno³

2023

JTEP-L

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“…The amount of liquid waste produced by the tofu manufacturing industry is proportional to the use of water in its processing. The amount of water demand and the amount of liquid waste produced is reported to be 45 and 43.5 liters, respectively, for each kilogram of soybean raw material [2]. In general, the tofu industry generates biodegradable wastewater containing suspended, colloidal, and dissolved organic matter in high concentrations and low pH (3)(4)(5), which is the main characteristic of this liquid waste [3].…”

Section: Introductionmentioning

confidence: 99%

“…Parameters that are not following the quality standards are pH, COD, TSS, TDS, and total nitrogen [8]. However, tofu liquid waste has utilization, such as being used as an alternative medium for the growth of Chlorella vulgaris [9], and used as a biogas product with an anaerobic process [2,10,11]. Therefore, liquid waste from the tofu industry has to be monitored.…”

Section: Introductionmentioning

confidence: 99%

Effect of storage time on in-situ parameters and total nitrogen analysis results of tofu liquid waste samples

Fitria,

Ainiyah,

Hamidah

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Field parameter measurement is usually constrained by time management, causing measurement delays and, therefore, different results between field parameters and the actual environmental conditions. Tofu liquid waste contains a low pH (3–5) and suspended, colloidal, and dissolved organics matter at high concentrations; the latter might change rapidly and also cause changes to other parameters. Tofu liquid waste from a tofu factory outlet was used in this study. The field parameters in this study included pH, total dissolved solids (TDS), and electrical conductivity (EC) by storage time variation of 15, 20, 25, and 30 minutes. The total nitrogen was analyzed by the Kjeldahl method with a storage time variation of 2, 4, 6, and 8 days. The measurement of pH found no significant difference (sig > 0.05) up to 30 minutes of storage time, while EC and TDS significantly differed within 20 minutes. The total nitrogen was stable up to the second day of storage time at a storage temperature of 4–8 °C without preservatives. In water quality monitoring, the results of water samples analysis should be as close as possible to their values in the environment. This research shows that field parameters’ results can change quickly if the sample handling and analysis time are not by procedures, especially for EC and TDS. In addition, this study also shows that without giving H2SO4, the value of total nitrogen in tofu liquid waste samples decreased significantly after the second day of storage at 4–8 °C.

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