Quality assessment of compost prepared with municipal solid waste

Abstract

Abstract:One way that helps maintain the sustainability of agro-ecosystems land is the application of compost from municipal solid waste as fertilizer, because it can recover the nutrients contained in them, minimizing the negative impact on the environment. Composting as a method for preparing organic fertilizers and amendments is economically and ecologically sound and may well represent an acceptable solution for disposing of municipal solid waste. In the present work, the quality of compost is studied made from municipal solid waste; the content of mineral nutrients: potassium, calcium, magnesium, sodium, zinc, manganese, cupper, iron, nickel, chromium and lead has been investigated. The objective was to evaluate the changes in mineral nutrient concentration during the composting process. The compost was prepared in a pilot-plant using the turning-pile system. Temperature was used as a monitoring parameter to follow the composting progress, which underwent the typical trend of municipal solid waste composting mixtures. The results showed a similar evolution on the content of mineral nutrients of the mixture of municipal solid waste. This evolution originated in a mature compost (end sample) with an adequate content of mineral elements and physical-chemical characteristics for its use in agriculture. So, the use of compost of municipal solid waste represents an important tool for fertilization requirements for its use in agriculture.

Bioaccumulation of chemical elements in vegetables as influenced by application frequency of municipal solid waste compost

“…2009;Jodar et al 2017), which aligned with the present study. Increases in some of the chemical elements such as K, Fe and Mn in the fallow soil compared to no-compost soil can be attributed to regenerative capacity of the fallow soil while the low concentration of soil N, Ca and Mg in the soil pool could be due to less mineralization in the fallow soil(Neilson and Calderon 2011).…”

“…The chemical elements in the MSW compost noticeably enhanced the essential macro-elements and both essential and non-essential trace elements concentrations in the applied soil. A wide range in chemical composition of MSW compost have been reported (Warman et al 2009;Jodar et al 2017) like our compost, and this can be ascribed to the diversity in chemical composition of the municipal solid waste compostable materials. The varied chemical elements altered the chemical composition of the soils to an extent that was dependent on the frequency of application i.e., annual versus biennial.…”

“…The difference between the no-compost and the fallow soils was mainly due to significant differences in concentrations of Pb, Sr and Rb. Compost contains varied and complex chemical compounds and myriad of microbial populations and biochemical activities (Jodar et al 2017). As such, it is expected that the different frequencies of MSW compost application will result in varied biophysicochemical activities in the soil.…”

“…The elemental composition of compost feedstock determines the chemical properties of the final compost and its impact on soil properties (Jodar et al 2017). It was recently shown that the source of compost i.e., seafood waste, kitchen or MSW determined the chemical composition of compost (Abbey et al 2018), while the frequency of MSW compost application significantly influence plant metabolome and lipidome (Abbey et al 2021).…”

Soil hydrophysical properties as affected by solid waste compost amendments: seasonal and short-term effects in an Ultisol

“…Municipal solid waste compost (MSWC) has been successfully used for agriculture in many countries (Ex: Grau et al, 2017;Leogrande et al, 2016). The MSWC have shown compa-rable physio-chemical characteristics to other composts derived from different agro-industrial by-products (Jodar et al, 2017). Application of MSWC is known to improve soil C storage (Peltre et al, 2017), availability of water and nutrient to the crops grown (Martínez-Blanco et al, 2013 and references therein), microbial biomass carbon, dehydrogenase activity values (Fernandez et al, 2007), and plant growth and fruit production characteristics (Leogrande, et al, 2016).…”