Ahmad Rahman Songip

TL;DR: Water hyacinth was introduced as an ornamental crop in many countries more than a century ago, due to its attractive appearance and aesthetical value in the environment as discussed by the authors. Unfortunately, the flowers developed into invasive species due to their adaptability for a wide range of fresh water ecosystems and their interference with human activities.

TL;DR: In this article, several solid acid catalysts such as HY, rare earth metal-exchanged Y-type (REY), and HZSM-5 zeolites and silica-alumina were used for catalytic reforming of heavy oil produced by pyrolysis of waste polyethylene, to yield gasoline.

TL;DR: Water hyacinth has great effect on waste water purification efficiency in continuous system and nutrient removal was successfully achieved and water quality has been improved from class III and IV to class II.

TL;DR: In this article, the authors provide an overview and analysis of the policies, challenges and strategies to issues related to municipal waste management (MWM) in Malaysia, which is a challenging task in recent years due to population growth, industrialisation and an increase in quantity and variation in the types of waste generated.

TL;DR: In this paper, the potential use of crushed cockle shells (Anadara granosa) for treating polluted river water in the fabricated column model was investigated along with the determination of the optimum amount of A. granosa used in the fabrication process based on results obtained from the series of jar test experiments performed during the study.