Rainwater Quality Disparities Across Malaysian Peninsula Sites

Authors

  • Md. Helal Uddin 1) Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional (UNITEN), Kajang 43000, Selangor, Malaysia 2) Department of Mechanical Engineering, Collage of Engineering, Universiti of Tenaga Nasional, Jalan-Ikram, UNITEN, 43000, Kajang, Selangor, Malaysia
  • Md. Rokonuzzaman Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional (UNITEN), Kajang 43000, Selangor, Malaysia
  • Mohammad Nur-E-Alam Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional (UNITEN), Kajang 43000, Selangor, Malaysia
  • Manzoore Elahi M. Soudagar 3) Faculty of Engineering, Lishui University, 323000, Lishui, Zhejiang, People’s Republic of China 4) Department of Mechanical Engineering and University Centre for Research & Development, Chandigarh University, Mohali 140413, Punjab, India
  • Hassan bin Mohamed 1) Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional (UNITEN), Kajang 43000, Selangor, Malaysia 2) Department of Mechanical Engineering, Collage of Engineering, Universiti of Tenaga Nasional, Jalan-Ikram, UNITEN, 43000, Kajang, Selangor, Malaysia
  • Nowshad Amin Department of Electrical and Electronic Engineering, Faculty of Engineering, American International University-Bangladesh, 408/1, Kuratoli, Dhaka 1229, Bangladesh

DOI:

https://doi.org/10.13052/jgeu0975-1416.1223

Keywords:

Rainwater harvesting, rainwater quality, raw water, sustainable water resource, pollutant-free rainwater

Abstract

This research describes the physicochemical quality of harvested rainwater at four distinct locations in Peninsula Malaysia. The evaluation of rainwater quality across different geographic areas aims to provide valuable insights into potential variations and trends in rainwater quality to reduce water demand globally. This analysis is conducted to determine seven properties, namely ammoniacal nitrogen, biochemical oxygen demand (BOD5), chemical oxygen demand (COD), dissolved oxygen (DO), pH, total dissolved solids (TDS), and turbidity. The results demonstrate that the quality of harvested rainwater meets the raw water quality standards set by the World Health Organization (WHO) and the National Water Quality Standards for Malaysia (NWQSM), indicating good quality rainwater in Malaysia. However, the COD for rainwater in all locations exceeded the limit, with a range of 14.1 to 29.7 mg/L, while the maximum limit for COD set by WHO is 10 mg/L, and according to NWQSM standards, it is 10–100 mg/L. The average pH of the collected rainwater is acidic ranged from 4.7 to 5.56. BOD5 for the collected rainwater is excellent; however, L2 has a slightly higher BOD5 at 6.5 mg/L, whereas the recommended limit by WHO is 6 mg/L, and the NWQSM standard suggests a range of 1–12 mg/L, with a standard limit of 5–7 mg/L. Nevertheless, DO levels ranged from 7.71 to 7.76 mg/L, indicating an ambient gas concentration in the rainwater. The collected rainwater can be used for portable purposes, gardening, smart farming, and toilet flushing.

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Published

2024-08-12

How to Cite

Uddin, M. H., Md. Rokonuzzaman, Nur-E-Alam, M., Soudagar, M. E. M., Mohamed, H. bin, & Amin, N. (2024). Rainwater Quality Disparities Across Malaysian Peninsula Sites. Journal of Graphic Era University, 12(02), 223–242. https://doi.org/10.13052/jgeu0975-1416.1223

Issue

2024: Vol 12 Iss 2

Section

Articles