TOC, TKN and C/N ratio fractionation of organic wastes under elevated temperature regime by using hydrothermal approach

Kamaruddin, Mohamad Anuar; Halid, N. F. H. M.; Yusoff, Mohd Suffian; Zainol, M. R. R. M. A.; Alrozi, Rasyidah

doi:10.1063/1.5118091

Cited by 2 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The TKN was analyzed using the Kjeldahl method [30]. The C/N ratio of the organic feed was determined by dividing the TOC by the TKN [31].…”

Section: Laboratory Analysismentioning

confidence: 99%

Organic Waste for Bioelectricity Generation in Microbial Fuel Cells: Effects of Feed Physicochemical Characteristics

Parwate,

Xue,

Koottatep

et al. 2024

Processes

View full text Add to dashboard Cite

Food waste (FW), piggery waste (PW), and activated sludge (AS) were investigated as potential organic feeds for bioelectricity generation in laboratory-scale microbial fuel cells (MFCs). The MFCs fed by FW gained the highest maximum power density at 7.25 W/m3, followed by those fed by PW at 3.86 W/m3 and AS at 1.54 W/m3. The tCOD removal in the FW-, PW-, and AS-MFCs reached 76.9%, 63.9%, and 55.22%, respectively, within a 30-day retention time. Food waste, which resulted in the highest power density and tCOD removal, was selected for a series of following tests to investigate the effects of some physicochemical properties of organic feed on the performance of MFCs. The effect of feed particle size was tested with three controlled size ranges (i.e., 3, 1, and <1 mm) in MFCs. A smaller feed particle size provided a higher power density of 7.25 W/m3 and a tCOD removal of 76.9% compared to the MFCs fed with organic waste with a larger particle size. An increment in feed moisture from 70% to 90% improved the maximum power density from 7.2 to 8.5 W/m3, with a 17.5% enhancement, and improved the tCOD removal from 75.8% to 83.3%, with a 10.0% enhancement. A moderate C/N ratio of approximately 30/1 maximized the power density and COD removal (7.25 W/m3 and 81.73%) in the MFCs compared to C/N ratios of 20/1 (4.0 W/m3 and 64.14%) and 45/1 (4.38 W/m3 and 71.34%).

show abstract

“…The TKN was analyzed using the Kjeldahl method [30]. The C/N ratio of the organic feed was determined by dividing the TOC by the TKN [31].…”

Section: Laboratory Analysismentioning

confidence: 99%

Organic Waste for Bioelectricity Generation in Microbial Fuel Cells: Effects of Feed Physicochemical Characteristics

Parwate,

Xue,

Koottatep

et al. 2024

Processes

View full text Add to dashboard Cite

show abstract

“…The TOC is a direct and reliable indicator that has been widely used to characterize organic pollution in water bodies and sediments [38] because of its potential hazards to humans [39], which means the VOCs are related to the river pollution in the Huangshui River. TOC can come from food waste [40] and released oils [41] and metals, such as Cu, Cr, Al, and Ni [42,43], which are related to pollution by humans. In addition, NO 2 − -N is often produced by sewage discharge, including vast amounts of agriculture and the breeding of cattle and sheep [44].…”

Section: Impact Of Environmental Factors On Vocsmentioning

confidence: 99%

Human Activities Aggravate VOC Pollution in the Huangshui River of the Tibetan Plateau

Yang

Deng

et al. 2022

Sustainability

View full text Add to dashboard Cite

Many xenobiotic compounds can threaten human health and natural ecosystems. The ability to predict the level of human activities and identify major impact factors is crucial for the design of pollutant risk-reduction plans. In this study, a total of 25 volatile organic compounds (VOCs) including eight alkenes, six alkanes, and eleven aromatics were identified at 11 monitoring locations along the Huangshui River of the Tibetan Plateau. GC-MS analysis was applied to detect the concentrations of the VOCs. The results showed that the alkene, alkane, and aromatic concentrations in the sediment were significantly higher than in the water in all seasons (p < 0.001). The VOC concentrations in summer were significantly higher than in spring and winter (p < 0.01). In addition, several VOCs were found to surpass the national standard, i.e., bromoform reached 312.43 μg/L in water during the summer (the national standard is 100 μg/L), carbon tetrachloride was 209.58 μg/L (the national standard is 2 μg/L), and vinyl chloride was 10.99 μg/L (the national standard is 5 μg/L), which were all related to human activities. Principal component analysis (PCA) was used to comprehensively evaluate the water quality and the VOCs. The total organic carbon (TOC) was found to be responsible for the presence of the VOCs in the river, accounting for 77.93%, 81.97%, and 82.13% of the total variance in the datasets in spring, summer, and winter, respectively.

show abstract

TOC, TKN and C/N ratio fractionation of organic wastes under elevated temperature regime by using hydrothermal approach

Cited by 2 publications

References 11 publications

Organic Waste for Bioelectricity Generation in Microbial Fuel Cells: Effects of Feed Physicochemical Characteristics

Organic Waste for Bioelectricity Generation in Microbial Fuel Cells: Effects of Feed Physicochemical Characteristics

Human Activities Aggravate VOC Pollution in the Huangshui River of the Tibetan Plateau

Contact Info

Product

Resources

About