Relationships between organic carbon and total organic matter in municipal solid wastes and city refuse composts

Jiménez, Emeterio Iglesias; García, Víctor Pérez

doi:10.1016/0960-8524(92)90012-m

Cited by 81 publications

(17 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Studies in Europe on fresh organic MSW have revealed that the average total organic carbon remains relatively stable, around 43-44 wt.%, despite the heterogeneity of the organic matter content (Baky & Eriksson, 2003;Iglesias Jimenez & Perez Garcia, 1992), suggesting that the variation of this parameter in the fine fractions from LFM depends strongly on the treatment of the MSW before disposal and the conditions at the landfill site.…”

Section: Moisture and Organic Contentmentioning

confidence: 99%

Characterization of Fine Fractions From Landfill Mining: A Review of Previous Investigations

2018

View full text Add to dashboard Cite

Several landfill mining (LFM) studies have been carried out in recent years all around the world. From these studies qualitative and quantitative information regarding the composition and characteristics of the different fractions excavated from landfills has been obtained. This information comprises data from various landfill sites around the globe from which useful correlations for future LFM projects can be identified. Of particular interest to this paper is the information regarding the fine fractions, which represent to this day a crucial obstacle in the implementation of LFM and enhanced landfill mining (ELFM). The fine fractions make up a considerable portion of the total amount of waste disposed of in landfills. Depending on the particle size chosen as upper limit to define the fines fraction, the portion of this fraction can be as high as 40-80 wt.% of the total excavated waste. These fractions consist of decomposed organic substances, e.g. humic substances, partly weathered mineral waste, e.g. sand, brick fragments, concrete, but also of fine metal particles, especially non-ferrous metals, and still a significant amount of plastics, paper and other calorific fractions. However, although calorific fractions might be used for energy recovery and inorganic fractions for material (especially metal) recovery, current LFM studies are discarding the fine fraction due to lacking or too expensive processing routes. Therefore, it is of critical interest to LFM and ELFM projects to reduce the particle size down to which the excavated material can be processed. This paper, which was elaborated within the framework of the EU Training Network for Resource Recovery through Enhanced Landfill Mining -NEW-MINE, aims to review the obtained data from different LFM studies from municipal solid waste (MSW) landfills, concerning the fines fraction, in order to identify key aspects to be taken into consideration while designing the processing approach in future LFM and ELFM investigations.

show abstract

Section: Moisture and Organic Contentmentioning

confidence: 99%

Characterization of Fine Fractions From Landfill Mining: A Review of Previous Investigations

2018

View full text Add to dashboard Cite

show abstract

“…Although a C/N ratio below 20 is suggested as indicative of acceptable maturity in the final product, and a ratio of 15 or even less is preferable (Iglesias Jiménez and Perez Garcia, 1989;Raut et al, 2008), the C/N ratio cannot be used as an indicator of the state of maturation of these composts because of the variation and the low initial C/N of composting material (<20). The periodic monitoring of C/N ratio during composting in conjunction with other parameters such as temperature can be a good indicator for OM degradation and reliable factor for compost stability and maturity evaluation (Iglesias Jiménez and Pérez García, 1992;Wichuk and McCartney, 2010). An increase of C/N ratio occurred during the thermophilic phase for runs 3, 6, 12 and 15 after the primary decrease which can be attributed to NH 3 volatilization (Hutchinson and Griffin, 2008).…”

Section: Resultsmentioning

confidence: 99%

Design of experiment (DOE) based screening of factors affecting municipal solid waste (MSW) composting

et al. 2016

View full text Add to dashboard Cite

“…Nitrogen content was determined with the modified total Kjeldahl nitrogen (TKN) method (UNE 77318:2001). Several compost maturity ratios were also computed, namely: C/N, the humification ratio (HR = TEC/TOC) and humification index (HI = HA/TOC) [31]. Compost extracts were immediately stored under cold conditions for spectroscopic analysis.…”

Section: Methodsmentioning

confidence: 99%

Wastewater Biosolid Composting Optimization Based on UV-VNIR Spectroscopy Monitoring

Temporal-Lara

Melendez-Pastor

Gómez

et al. 2016

Sensors

View full text Add to dashboard Cite

Conventional wastewater treatment generates large amounts of organic matter–rich sludge that requires adequate treatment to avoid public health and environmental problems. The mixture of wastewater sludge and some bulking agents produces a biosolid to be composted at adequate composting facilities. The composting process is chemically and microbiologically complex and requires an adequate aeration of the biosolid (e.g., with a turner machine) for proper maturation of the compost. Adequate (near) real-time monitoring of the compost maturity process is highly difficult and the operation of composting facilities is not as automatized as other industrial processes. Spectroscopic analysis of compost samples has been successfully employed for compost maturity assessment but the preparation of the solid compost samples is difficult and time-consuming. This manuscript presents a methodology based on a combination of a less time-consuming compost sample preparation and ultraviolet, visible and short-wave near-infrared spectroscopy. Spectroscopic measurements were performed with liquid compost extract instead of solid compost samples. Partial least square (PLS) models were developed to quantify chemical fractions commonly employed for compost maturity assessment. Effective regression models were obtained for total organic matter (residual predictive deviation—RPD = 2.68), humification ratio (RPD = 2.23), total exchangeable carbon (RPD = 2.07) and total organic carbon (RPD = 1.66) with a modular and cost-effective visible and near infrared (VNIR) spectroradiometer. This combination of a less time-consuming compost sample preparation with a versatile sensor system provides an easy-to-implement, efficient and cost-effective protocol for compost maturity assessment and near-real-time monitoring.

show abstract

Relationships between organic carbon and total organic matter in municipal solid wastes and city refuse composts

Cited by 81 publications

References 13 publications

Characterization of Fine Fractions From Landfill Mining: A Review of Previous Investigations

Characterization of Fine Fractions From Landfill Mining: A Review of Previous Investigations

Design of experiment (DOE) based screening of factors affecting municipal solid waste (MSW) composting

Wastewater Biosolid Composting Optimization Based on UV-VNIR Spectroscopy Monitoring

Contact Info

Product

Resources

About