Acid mine drainage prediction using acid-base accounting method at mine sites in Pahang

Tuan Rusli Mohamed, . and Wan Zuhairi Wan Yaacob, . (2009) Acid mine drainage prediction using acid-base accounting method at mine sites in Pahang. [Proceedings Paper]

Acid mine drainage AMD is a weathering product via oxidation and hydrolysis processes of sulphide minerals for example pyrite FeS2 arsenopyriteFeAsS and chalcopyrite CuSFeS4 producing high acidity water with elevated concentration of toxic heavy metals. Acid mine drainage is a common problem associated with mining activities in Malaysia but yet still receiving too little attention from researchers and mining operators. This paper will highlight some interesting findings of a research conducted very recently on AMD phenomena in several active and abandoned mines in Pahang. Acid-Base accounting method was used to determine the contribution of parent rock materials and mineral ore bodies in the production of AMD. In-situ water quality parameters were firstly measured on site such as temperature pH electrical conductivity. total dissolved solid TDS and dissolved oxygen DO. A total of 19 water samples an d 28 rock samples were collected and analysed in this study The results revealed that pH as the main AMD indicator are very low in most of the study locations with the pH values ranging from 2.6 -4.4. Most of the mine water analysed showed high concentration of heavy metals such as copper Cu iron Fe manganese Mn zinc Zn arsenic As and cadmium Cd. Acid formation prediction based on Acid-Base Calculation revealed that mines of Sg. Lembing Bukit Botol Pekan Mining and Kg. Aur have higher acid generation potential. All of these locations showed very low neutralisation potential NP values as compared to acid production potential APP values with the ratio made between them in a range of 0.06 to 0.72. The study also successfully identify the source rock ofa cid generation in these mines such as from mine tailings in Sg Lembing massive sulphide deposits in Bukit Botol. tuffaceous rock in association with secondary mineralization in Pekan Mining and tuffaceous silt stone with high quantity of pyrite in Kg. Aur Bukit /bam.

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Abstract

Acid mine drainage AMD is a weathering product via oxidation and hydrolysis processes of sulphide minerals for example pyrite FeS2 arsenopyriteFeAsS and chalcopyrite CuSFeS4 producing high acidity water with elevated concentration of toxic heavy metals. Acid mine drainage is a common problem associated with mining activities in Malaysia but yet still receiving too little attention from researchers and mining operators. This paper will highlight some interesting findings of a research conducted very recently on AMD phenomena in several active and abandoned mines in Pahang. Acid-Base accounting method was used to determine the contribution of parent rock materials and mineral ore bodies in the production of AMD. In-situ water quality parameters were firstly measured on site such as temperature pH electrical conductivity. total dissolved solid TDS and dissolved oxygen DO. A total of 19 water samples an d 28 rock samples were collected and analysed in this study The results revealed that pH as the main AMD indicator are very low in most of the study locations with the pH values ranging from 2.6 -4.4. Most of the mine water analysed showed high concentration of heavy metals such as copper Cu iron Fe manganese Mn zinc Zn arsenic As and cadmium Cd. Acid formation prediction based on Acid-Base Calculation revealed that mines of Sg. Lembing Bukit Botol Pekan Mining and Kg. Aur have higher acid generation potential. All of these locations showed very low neutralisation potential NP values as compared to acid production potential APP values with the ratio made between them in a range of 0.06 to 0.72. The study also successfully identify the source rock ofa cid generation in these mines such as from mine tailings in Sg Lembing massive sulphide deposits in Bukit Botol. tuffaceous rock in association with secondary mineralization in Pekan Mining and tuffaceous silt stone with high quantity of pyrite in Kg. Aur Bukit /bam.

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. mal QE 351 M664 2009 Call Number
AGROVOC Term:	Drainage systems
AGROVOC Term:	Oxidation
AGROVOC Term:	Hydrolysis
AGROVOC Term:	Acidity
AGROVOC Term:	Toxicity
AGROVOC Term:	Heavy metals
AGROVOC Term:	mining
AGROVOC Term:	Mineralization
AGROVOC Term:	Silting
AGROVOC Term:	Pyrites
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/12179

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