Bunrith Seng

B2G Engineering Co. Ltd

Similar to other cities in developing countries, the waste management has always been a major societal issue for Phnom Penh. The monthly amount of disposed waste at the landfill more than doubled in the past decade owing to factors such as population growth, economic growth, changes in industrial structure and of people’s lifestyle. While Phnom Pen...

Organic solid waste composting is a complex process that involves many coupled physical, chemical and biological mechanisms. To understand this complexity and to ease in planning, design and management of the composting plant, mathematical model for simulation is usually applied. The aim of this paper is to develop a mathematical model of organic s...

Characterization of anthracene metabolites produced by Armillaria sp. F022 was performed in the enzymatic system. The fungal culture was conducted in 100-mL Erlenmeyer flask containing mineral salt broth medium (20 mL) and incubated at 120 rpm for 5-30 days. The culture broth was then centrifuged at 10,000 rpm for 45 min to obtain the extract. Addi...

This paper presents insight into the benefits of organic waste recycling through composting over landfill, in terms of landfill life extension, compost product, and mitigation of greenhouse gases (GHGs). Future waste generation from 2003 to 2020 was forecast, and five scenarios of organic waste recycling in the municipality of Phnom Penh (MPP), Cam...

This paper presents a mathematical model of vertical water movement and a performance evaluation of the model in static pile composting operated with neither air supply nor turning. The vertical moisture content (MC) model was developed with consideration of evaporation (internal and external evaporation), diffusion (liquid and vapour diffusion) an...

The main source of water options in most urban and rural areas for Samarinda was well (ground) water. Samarinda is a developing city and most highly populated located in the East Borneo province of Indonesia. Meanwhile, the location and characteristic of land in Samarinda was swampy areas with organic substances concentration (KMnO4) and high turbi...

This paper presents an insight into benefits of organic waste recycling through composting over landfill on municipal solid waste management in Phnom Penh, in terms of greenhouse gases (GHGs) mitigation. Future waste generation from 2003 to 2020 was forecasted and four scenarios of organic waste recycling were carried out. Organic wastefood and ga...

This paper presents an overview of municipal solid waste management (MSWM) for both technical and regulatory arrangements in the municipality of Phnom Penh (MPP), Cambodia. Problems with the current MSWM are identified, and challenges and recommendations for future improvement are also given in this paper. MPP is a small city with a total area of a...

Waste activated sludge (WAS) requires a long digestion time because of a rate-limiting hydrolysis step - the first phase of anaerobic digestion. Pretreatment of WAS facilitates the hydrolysis step and improves the digestibility. This study examined the effects of ultrasonic, chemical, and combined chemical-ultrasonic pretreatments on WAS disintegra...