Affiliation:
1. Vilnius Gediminas Technical University, Vilnius, Lithuania
Abstract
Treatment and recycling of sludge waste have developed into a research focus in recent years. Today, nutrient recovery from wastewater and sludge has received much attention from regulators, academia, industry, and the general public. Institutions and governments around the globe are now seeking innovation to implement a “circular economy” for sewage sludge usage. The development of cost-effective and environmentally friendly disposal processes is necessary to meet political demands. In developing countries, common approaches to the treatment such as incineration and landfilling, cause unwanted secondary pollution. The study aims to determine sewage sludge biochar’s physical and chemical properties and its preparation for wastewater treatment. The chosen chemical properties of sewage sludge biochar were electrical conductivity (EC), total organic carbon (%) content, physical properties were volatile solids, ash content, and also conducted phosphorus leaching experiment. It was determined that by increasing the pyrolysis temperature, the electrical conductivity (from 665 µS/cm to 277 µS/cm) and total organic carbon (from 29.03% to 17.25%) measurements decreased. By increasing the pyrolysis temperature, the ash content (from 50.07% to 69.45%), and volatile solids (from 53.61% to 74.55%) measurements increased.
Publisher
Vilnius Gediminas Technical University
Reference18 articles.
1. Aplinkos apsaugos agentūra. (2019). https://aaa.lrv.lt/
2. Calculator Tool for Determining Greenhouse Gas Emissions for Biosolids Processing and End Use
3. Review of sewage sludge management: standards, regulations and analytical methods
4. Advantages and disadvantages of techniques used for wastewater treatment
5. Ellen MacArthur Foundation. (2015). Towards a circular economy: Business rationale for an accelerated transition. https://ellenmacarthurfoundation.org/towards-a-circular-economy-business-rationale-for-an-accelerated-transition