Compost from Municipal Solid Wastes as a Source of Biochar for CO₂ Capture

Abstract

Increasing greenhouse gas emissions contributing to the global climate change are a major concern of environmental protection. Developing adsorbents from lowcost and renewable resources is an attractive strategy. On the other hand, the high capacity of production rates of municipal solid waste, besides high methane emissions, is the origin of some eco-systemic challenges. The combination of the two environmental problems is considered by introducing the compost from a mechanical biological treatment of municipal solid wastes as a low-cost source of adsorbent for CO 2 capture. The obtained compost was thermally and chemically activated and the CO 2 adsorption capacities of prepared samples were evaluated. Samples prepared sequentially with sulfuric acid and heated at 800°C and vice versa, respectively, had the highest uptake capacities and were comparable with commercial adsorbents.

Designing a simple volumetric apparatus for measuring gas adsorption equilibria and kinetics of sorption. Application and validation for CO2, CH4 and N2 adsorption in binder-free beads of 4A zeolite

“…Response surface methodology (RSM) as a combination of statistical and mathematical methods is a robust computing approach to experi-ments design, statistical analysis, optimization, and detecting the interaction effects [52,53]. The first step to develop a RSM model is finding the main independent variables of process as factors of the model, which are defined in three levels coded as − 1, 0 and + 1 [54,55].…”

“…here, y i , ŷi , and y represent the experimental results, estimated data, and the average of experimental values, respectively. Also, P and n are the numbers of predictors and experiments, respectively [52,57].…”

Applications of Biochar and Modified Biochar in Heavy Metal Contaminated Soil: A Descriptive Review

“…Industrial waste mainly includes organic wastes produced in industry and daily life such as sludge [21] and municipal solid waste [41]. Research on the preparation of biochar from industrial waste increased by 70% from 2010 to 2019.…”

Alternative Materials for the Enrichment of Biogas with Methane

“…Furthermore, one of the trends in science is the investigation of low-cost alternative adsorbents for different purposes [40], such as water cleaning from heavy metals [41,42], pharmaceuticals [43] or dyes [44]. Some applications of alternative adsorbents are targeted for gas purification, e.g., from mercury [45] and carbon dioxide capture [46], and also, eventually, for biogas purification [47,48]. Nevertheless, it is difficult to find publications on the use of waste tire pyrolysis char for gas separation.…”