Leaching behavior of mineral processing waste: Comparison of batch and column investigations

Al-Abed, Souhail R.; Jegadeesan, Gautham B.; Purandare, Jaydeep; Allen, D.V.

doi:10.1016/j.jhazmat.2007.09.063

Cited by 53 publications

(27 citation statements)

References 23 publications

(53 reference statements)

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“…Moreover, it can be found that the release profiles of heavy metals were as a function of initial pH and the released amounts of the heavy metals increased with decreasing initial pH value. The results were consistent with other similar studies [25,30]. In an acidic environment, the release of heavy metals occurred mainly due to acid attack [30].…”

Section: Released Amounts Of Heavy Metals Under Different Initial Ph supporting

confidence: 93%

“…The results were consistent with other similar studies [25,30]. In an acidic environment, the release of heavy metals occurred mainly due to acid attack [30]. In the study area, the pH of rain is less than 5.0.…”

Section: Released Amounts Of Heavy Metals Under Different Initial Ph supporting

confidence: 93%

“…The column experiment method has the advantage of simulating a long-term release process and finding temporal variations of heavy metal release from solid materials compared with the batch experiment method. However, the column method is complex and expensive [30]. In recent years, some researchers have indicated that the low-cost and simple batch experiment method can substitute the column experiment method in studying the release of heavy metals from mining tailings [30].…”

Section: Introductionmentioning

confidence: 99%

“…However, the column method is complex and expensive [30]. In recent years, some researchers have indicated that the low-cost and simple batch experiment method can substitute the column experiment method in studying the release of heavy metals from mining tailings [30]. In this case, the batch experiment method can be used to rapidly find the release information of heavy metals of tailings in a mine area where the release information is missing, if the control of the heavy metals pollutions is urgently to be performed.…”

Section: Introductionmentioning

confidence: 99%

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Release of Heavy Metals from the Pyrite Tailings of Huangjiagou Pyrite Mine: Batch Experiments

et al. 2016

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Abstract:To provide the basic information about the release of heavy metals from the pyrite tailings of Huangjiagou pyrite mine, the pyrite tailings were investigated through a series of batch experiments under different initial pH of extractant, temperature, liquid-solid (LS) ratio, and soaking time conditions. Moreover, calcium carbonate was added in the pyrite tailings to determine the reduction effect on the release of heavy metals. The results show that Fe, Cr, Cu, Mn, Zn, and Ni were the major heavy metals in the pyrite tailings. Low initial pH and high LS ratio significantly promoted Fe, Cu, Mn, Ni, and Zn release, and high temperature significantly promoted Fe, Cu, Mn, and Ni release. Only small amounts of Cr were detected at low LS ratios. With the increase of soaking time, the released amount of Fe, Cu, Mn, Ni, and Zn increased to the maximum value within 48 h, respectively. After adding calcium carbonate, the released amounts of Fe, Cu, and Zn reduced at least 70.80% within 48 h soaking time. The results indicate that summer and the early soaking stage are the main phases for the release of heavy metals from the pyrite tailings. In the pyrite tailings, Cr is difficult to release. Adding calcium carbonate can effectively reduce the release of Fe, Cu, and Zn.

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Section: Released Amounts Of Heavy Metals Under Different Initial Ph supporting

confidence: 93%

Section: Released Amounts Of Heavy Metals Under Different Initial Ph supporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Release of Heavy Metals from the Pyrite Tailings of Huangjiagou Pyrite Mine: Batch Experiments

et al. 2016

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“…The specific objective was to determine the dynamics of leachate chemistry, indicated by acidity, salinity, common toxic elements and labile C, in neutral Cu-Au tailings with and without woodchips or biochar amendment under laboratory leaching conditions over 20 weeks. Column leaching has been used as a routine approach for assessing the geochemistry and toxicity of porous materials for many years [21][22][23], and it was particularly useful for mine wastes as supposed to better simulate field conditions than the batch methods [24][25][26][27]. Despite the significant deviation in leachate chemistry among replicate columns over time [23,28], column leaching was still thought to be a valuable approach to assess the medium-to long-term dynamics of mine tailings' toxicity and hydrogeochemistry.…”

Section: Introductionmentioning

confidence: 99%

Dynamics in leachate chemistry of Cu-Au tailings in response to biochar and woodchip amendments: a column leaching study

You

Huang

et al. 2013

Environ Sci Eur

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Background: Phytostabilization has been advocated as a promising approach to reduce mine tailings' adverse effects to surrounding environment. With many years of efforts in both laboratory and field trials, organic amendments are found to be essential in tailing revegetation. Yet, the associate geochemical dynamics caused by different amendments has rarely been examined. As reactive minerals are usually rich in tailings, geochemical changes induced by amendments would influence seepage management and revegetation strategies. The present study aimed to investigate geochemical dynamics in Cu-Au tailing leachate, in response to amendments with biochar produced from hardwood timber at high charring temperature or woodchips of mixed native tree species in a column leaching experiment under laboratory conditions. Results: Results showed that the Cu-Au tailings tested in this study were relatively stable after natural weathering, with little resilience of peak salinity, stable pH and low levels of metals in leachate against the six cycles of leaching over 20 weeks. In comparison with the control without any amendments, biochar treatment did not cause any substantial changes in most examined properties of leachate, except for the reduction in dissolved organic C and NO 2

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Optimizing acid leaching of copper from the wastewater treatment sludge of a printed circuit board industry using factorial experimental design

Thawornchaisit

Juthaisong

Parsongjeen

et al. 2019

J Mater Cycles Waste Manag

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Leaching behavior of mineral processing waste: Comparison of batch and column investigations

Cited by 53 publications

References 23 publications

Release of Heavy Metals from the Pyrite Tailings of Huangjiagou Pyrite Mine: Batch Experiments

Release of Heavy Metals from the Pyrite Tailings of Huangjiagou Pyrite Mine: Batch Experiments

Dynamics in leachate chemistry of Cu-Au tailings in response to biochar and woodchip amendments: a column leaching study

Optimizing acid leaching of copper from the wastewater treatment sludge of a printed circuit board industry using factorial experimental design

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