Assessment of biowaste composting process for industrial support tool development through macro data approach

Abstract

This study aims to assess composting efficiency and quality of compost through the study of the parameters of the Catalan Waste Agency (ARC) data-base by developing indicators useful for industrial sector. The study includes 17 composting plants for an 8-years period (2010)(2011)(2012)(2013)(2014)(2015)(2016)(2017), the quantities of materials treated and generated in these plants: biowaste, yard trimmings, refuse and compost, as well as chemical characterization of compost: total organic matter, organic nitrogen, pH, electrical conductivity, self-heating test, pollutants and ammonium. Plant were sorted into 4 size classes depending on size capacity and into 4 technologies employed during thermophilic phase.Different indicators were developed related to improper fraction content, yard trimmings ratio, mass losses, compost production, refuse generation and plant saturation. The main results indicate that improper fraction is 10%, process losses 68%, refuse generated 25% and saturation 79%. Differences were observed in size and technology; for instance, smaller plants presented lower improper content, refuse and saturation and higher losses while plants with turned windrows during decomposition presented higher improper, yard trimmings ratio and plants with vessel technology showed lower losses and higher saturation. Also, the compost quality is higher if the plant saturation and improper fraction are below 90% and 7%, respectively. The indicators were useful to assess the process and were related to the compost quality obtained.

Reduction in the Emission Rate of Greenhouse Gases and the Increase in Crop Production by Using Compost on Marginal Land

“…The low N2O emissions in paddy fields treated with rice straw and cocoa pod husk compost were associated with declining populations of denitrifiers. In addition, compost fertilizer will inhibit the nitrification of NH4 + to NO2 -1 so that N2O [31] does not form. In addition, flooded soil conditions during the growth of plants create anaerobic soil conditions with a low Eh value that can reduce the content of NO3 -1 and increase NH4 + and its content, including the content of polyphenols in the soil [6].…”

Identifikasi Potensi Komoditi Perkebunan Rakyat Unggulan Untuk Mendukung Pembangunan Ekonomi Kabupaten Karo

“…Dengan teridentifikasikannya potensi kegiatan ekonomi daerah maka dapat disusun kebijakan pembangunan yang berlandaskan pada upaya meningkatkan pertumbuhan ekonomi (Rizani, 2017). Analisis secara keseluruhan akan mengetahui sektor basis perekonomian masa lalu dan kemudian dapat dipergunakan sebagai bahan atau dasar pertimbangan dalam membuat perencanaan pembangunan secara makro yang lebih baik di masa yang akan datang (Oktavia et al, 2015;Farrokhabadi and Babaei, 2019;Girón-Rojas et al, 2020).…”

Application of Optimization and Modeling for the Composting Process Enhancement

“…About 50% of the waste generated worldwide consists of organic matter, generally from food, human and animal waste, garden and wood products [2]. A significant portion of this waste ends up in landfills and, if not properly treated, can pose a significant threat to the environment and human health [3]. The main producers are the agriculture and food sectors.…”