Zawawi Daud ¹, Mahmoud Hijab Abubakar ¹, Aeslina Abdul Kadir ¹, AbAziz Abdul Latiff ¹, Halizah Awang ², Azhar Abdul Halim ³, Aminaton Marto ⁴

Affiliations
1 Team of Research in Integrated Solid Waste Management (TRISM), Faculty of Civil and Environment Engineering, UniversitiTun Hussein Onn Malaysia, Johor, MY
2 Faculty of Technical and Vocational Education, Universiti Tun Hussein Onn Malaysia, Johor, MY
3 School of Environmental and Natural Resources Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Selangor, MY
4 Faculty of Civil Engineering, Universiti Teknologi Malaysia, Johor, MY

Abstract

Background/Objectives: Landfills generate leachate having an elevated concentration of contaminants and hazardous to health and the ecosystem. Feldspar and zeolite mixture was investigated for minimizing COD and ammonia from the leachate. Methods/Statistical Analysis: All adsorbent media were sieved to a particle size between 2.00 and 3.35 mm. The optimum shaking speed, mixing ratio, and pH were determined. Raw leachate Sample used in the study was collected from the influent of the detention pond at the SimpangRenggam Municipal landfill in Johor (Malaysia). Findings: Results of the leachate characteristics indicated a non-biodegradable leachate with a high concentration of COD (1763 mg/L), ammonia nitrogen (573 mg/L) and BOD5/COD ratio (0.09). The optimum condition for shaking speed was 150 rpm, the optimum mix ratio of zeolite and feldspar was 20:20, and the optimum pH was 6–6.5. Applications/Improvements: The mixed media produced encouraging results for leachate treatment. It will significantly be applicable in reducing zeolite usage conventionally and consequently decreasing the operational cost in leachate treatments.

Keywords

Ammonia, COD, Feldspar, Leachate, Optimization, Zeolite.

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Aeslina Abdul Kadir ¹, Mohd IkhmalHaqeem Hassan ¹, Noor Amira Sarani ¹, Ahmad Shayuti Abdul Rahim ¹, Nasuha Ismail ¹

Affiliations
1 Department of Water and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, MY

Abstract

Background/Objectives: Industrial waste is defined as waste generated by industrial processes, and one of these types of industrial waste are quarry dust. Currently, stockpiles approximately 60,000 tons of waste within the quarry compound and this amount has become bigger and create space problems. The criteria of the waste are very fine dust and formed from the process of producing premix using drum mix and dryer process. Therefore, this research focused on utilizing this waste in brick manufacturing as an alternative disposal method to the quarry dust as well as complies with the environmental regulations. Methods/Statistical Analysis and Findings: This research has established that the 30% of quarry dust brick improved most properties if appropriately designed and prepared during brick manufacturing. By taking into account the effects of quarry dust to the environment, it found that incorporation of 30% quarry dust into fired clay bricks leached less heavy metal during the leachability test and complied with USEPA, EPAV, and WHO standard. Application/Improvements: The comprehensive experimental testing in this research measured the possibility of incorporating quarry dust into clay bricks. Therefore, these results indicate that incorporation of quarry dust in fired clay bricks could minimize the potential of quarry dust environmentalproblems.

Keywords

Fired Clay Brick, Heavy Metal, Leachability, Quarry Dust

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