Impacts of ultrasound on selective leaching recovery of heavy metals from metal-containing waste sludge

Recently waste material pollution is a critical issue in every developing country. The factors such as increasing of growing population, daily and industrial activities will lead to these phenomena. These issues give an idea to use waste as a construction material that will give minimum impact towards the environment. Many researchers have been studied on waste material such as organic waste, sludge, fly ash, rice husk and processed waste tea into fired clay brick. In this study, the investigate on the incorporating of cigarette butts (CBs) was conducted. During this study, different percentages of CBs (0%, 2.5% and 5.0%) were added into fired clay brick. Meanwhile, different heating rates were applied during the firing stage, which are 1°C/min, 3°C/min and 5°C/min respectively. All samples were fired up to 1050°C. Leaching tests were carried out to investigate the possibility of heavy metals leached from the manufactured brick. The results demonstrated that, in terms of physical and mechanical properties, CB Brick (2.5%) at 1°C/min improved the most and leached low heavy metals. For IAQ test, CB Brick (2.5%) fired at 1°C/min is acceptable to be used as building materials since it complied with ICOP-IAQ.

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Influence of Sulfur Concentration on Bioleaching of Heavy Metals from Industrial Waste Sludge

Water Environment Research ◽

10.2175/106143010x12609736966720 ◽

2010 ◽

Vol 82 (11) ◽

pp. 2219-2228 ◽

Cited By ~ 1

Author(s):

Yen-Hui Lin ◽

Mu-Ling Juan ◽

Hau-Liang Huang ◽

Hui-Ying Tsai ◽

Pearl Hsui-Ping Lin

Keyword(s):

Heavy Metals ◽

Industrial Waste ◽

Sulfur Concentration ◽

Waste Sludge

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Impact of Brewery Waste Sludge on Sorghum (Sorghum bicolor L. Moench) Productivity and Soil Fertility in Harari Regional State, Eastern Ethiopia

Turkish Journal of Agriculture - Food Science and Technology ◽

10.24925/turjaf.v5i4.366-372.1058 ◽

2017 ◽

Vol 5 (4) ◽

pp. 366 ◽

Cited By ~ 1

Author(s):

Nano Alemu Daba ◽

Abduletif Ahmed ◽

Muktar Mohammed

Keyword(s):

Heavy Metals ◽

Soil Fertility ◽

Block Design ◽

Mineral Fertilizer ◽

High Concentration ◽

Eastern Ethiopia ◽

Waste Sludge ◽

Regional State ◽

The Impact ◽

Sludge Application

The study was conducted on farmers' field in sofi district of Harari Regional State during 2013/2014 main cropping season, eastern Ethiopia, to investigate the impact of brewery sludge on sorghum production and soil fertility. The treatments comprised seven levels of brewery sludges (0, 2.5, 5.0, 7.5, 10.0, 12.5 and 15.0 t ha-1) and NP inorganic fertilizer at recommended rate, arranged in randomized complete block design with four replications. Application of brewery sludge at 15 t ha-1 significantly increased the yield and biomass yield of sorghum by 79 and 85% over control and by 57 and 67% over NP application, respectively. There was no effect of brewery sludge application on heavy metals concentrations in soil after crop harvest, compared to international standard tolerable level. Co and Se levels were high in the control as well as in the soils treated with brewery sludge indicating the already high concentration of these heavy metals in the soils of the area. Plots, which received higher brewery sludge application, resulted in decreased or less percentage of grain nitrogen content showing the independence of grain protein content on lower brewery sludge level. The nitrogen uptake by sorghum grain, straw and the total was maximum (52.68, 44.25 and 79.03 kg ha-1, respectively) with the application of brewery waste sludge at 10 and 15 t ha-1 which were significantly higher than the other brewery sludge and NP mineral fertilizer applications.

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Transformation and Migration of Heavy Metals by Aquatic Worms in Wastewater Treatment

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.573-574.526 ◽

2012 ◽

Vol 573-574 ◽

pp. 526-533

Author(s):

Wei Fei Huang ◽

Ying Gang Shu ◽

Lu Cai ◽

Sheng Liang Si

Keyword(s):

Heavy Metals ◽

Wastewater Treatment ◽

Activated Sludge ◽

Environmental Risk ◽

Sludge Reduction ◽

Excess Sludge ◽

Safe Disposal ◽

Waste Sludge ◽

And Migration ◽

Sludge Settleability

L. hoffmeisteri was inoculated in reactor to investigate the effects on waste sludge and wastewater to reduce excess sludge and reduce the environmental risk of heavy metals in sludge and effluent in this study. The result showed a gravimetric sludge reduction of 53.8% and modification in the texture of the sludge. The residual form of heavy metals (As, Cd, Cr, Cu, Ni, Pb and Zn) was increased, which reduced the risk of the phytoaccumulation. An evident concentration of heavy metals in worm faece and a bioaccumulation of heavy metals in aquatic worms were also observed. Activated sludge is reduced significantly, sludge settleability is improved and the bioavailability of heavy metals in waste sludge is minimized, which are beneficial to wastewater treatment and safe disposal of waste sludge.

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Bioleaching for extracting heavy metals from electronic waste sludge

Industrial and Municipal Sludge ◽

10.1016/b978-0-12-815907-1.00023-4 ◽

2019 ◽

pp. 525-551 ◽

Cited By ~ 1

Author(s):

Jianfeng Bai ◽

Gu Weihua ◽

Liao Changzhong ◽

Yuan Wenyi ◽

Zhang Chenglong ◽

...

Keyword(s):

Heavy Metals ◽

Electronic Waste ◽

Waste Sludge

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A study on selective leaching of heavy metals vs. iron from fly ash

Journal of Material Cycles and Waste Management ◽

10.1007/s10163-019-00858-w ◽

2019 ◽

Vol 21 (4) ◽

pp. 1004-1013 ◽

Cited By ~ 4

Author(s):

Heini Elomaa ◽

Sipi Seisko ◽

Jenna Lehtola ◽

Mari Lundström

Keyword(s):

Heavy Metals ◽

Fly Ash ◽

Selective Leaching

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A two-step leaching method designed based on chemical fraction distribution of the heavy metals for selective leaching of Cd, Zn, Cu, and Pb from metallurgical sludge

Environmental Science and Pollution Research ◽

10.1007/s11356-017-0471-7 ◽

2017 ◽

Vol 25 (2) ◽

pp. 1752-1765 ◽

Cited By ~ 3

Author(s):

Fen Wang ◽

Junxia Yu ◽

Wanli Xiong ◽

Yuanlai Xu ◽

Ru-an Chi

Keyword(s):

Heavy Metals ◽

Selective Leaching ◽

Chemical Fraction ◽

Fraction Distribution

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Heavy metal removal from MSS fly ash by thermal and chlorination treatments

Scientific Reports ◽

10.1038/srep17270 ◽

2015 ◽

Vol 5 (1) ◽

Cited By ~ 12

Author(s):

Jingyong Liu ◽

Jiacong Chen ◽

Limao Huang

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Fly Ash ◽

Evaporation Rate ◽

Metal Removal ◽

Removal Rate ◽

Heavy Metal Removal ◽

Efficient Removal ◽

Waste Sludge ◽

Cu And Zn

Abstract The thermal behavior of heavy metals in the co-incineration of municipal solid waste-sludge incinerator fly ash (MSS fly ash) was studied using a laboratory-scale tube furnace. The results indicate that without the addition of chlorinating agents, temperature was an important parameter and had significantly influenced on heavy metal removal, whereas the residence time had a weak effect. Between 900 and 1000 °C for 60 to 300 min, heavy metals reacted with chloride-inherent in the fly ash and approximately 80 to 89% of Pb, 48% to 56% of Cd, 27% to 36% of Zn and 6% to 24% of Cu were removed. After the adding chlorinating agents, the evaporation rate of the heavy metals improved dramatically, where the evaporation rates of Cu and Zn were larger than that of Pb and Cd. As the amount of added chlorinating agents increased, the removal rate of heavy metals increased. However, the effect of the type of chlorinating agent on the chlorination of heavy metals differed considerably, where NaCl had the weakest effect on the removal rate of Cu, Cd and Zn. In terms of resource recovery and decontamination, MgCl2 and CaCl2 are the best choices due to their efficient removal of Zn.

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