Evaluation of sewage sludge incineration ash as a potential land reclamation material

Lin, Wenlin Yvonne; Ng, Wei Cheng; Wong, Belinda Shu Ee; Teo, Serena Lay‐Ming; SIVANANTHAN, GAYATHIRI D/O; Baeg, Gyeong Hun; Ok, Yong Sik; Wang, Chi-Hwa

doi:10.1016/j.jhazmat.2018.05.047

Cited by 53 publications

(11 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The impact of salinity on the BRs of HMs was minimum except the BRs of Cd showed a negative correlation with salinity.The BR of Cd in CM-amended soils showed a correlation with SOM (r = 0.976 ** ), pH (r = -0.967 ** ), and salinity (r = -0.897 ** ). There was no correlation between the BR of Cu and Ni with SOM, pH, and salinity.The BRs of Zn positively correlated with pH, and the BR of Mn and Zn negatively correlated with salinity.For the mixed data from three OAs, the BRs of HMs were generally positively correlated with SOM and negatively correlated with pH and salinity, except the BR of Ni was not correlated with any soil parameters.DiscussionSoil propertiesPrevious studies con rmed that the application of CMR(Ma et al, 2019), SS(Eid et al, 2019b;Lin et al, 2018), and CM (Watanabe et al, 2019) signi cantly increased SOM, which was consistent with the current study. Increased SOM is an important index of soil fertility.…”

supporting

confidence: 91%

Long-term Impact of Organic Amendments on the Bioavailability of Heavy Metals in Mudflat Soil and Their Uptake by Maize

Bai

et al. 2021

Preprint

View full text Add to dashboard Cite

Organic amendments (OAs) can be a sustainable and effective method for mudflat soil improvement. A long-term field experiment was conducted to investigate the potential of OA application to mudflat soil improvement. We measured the pH, soil organic matter (SOM), salinity, maize growth, and heavy metal (HM) accumulation in OA-amended soils and maize tissues 23 months after three OAs, sewage sludge (SS), Chinese medical residue (CMR), and cattle manure (CM), were applied at the application rates of 0, 30, 75, 150, and 300 t ha-1. OA application significantly increased the SOM and decreased the salinity of mudflat soils. Additionally, CMR and CM application decreased soil pH. The maize biomass and HM contents in soil and maize increased after OA application. The bioavailability and bioconcentration of HMs were generally in the sequence of SS>CMR>CM. The average bioavailability ratios of HMs were in the order of Cd>Zn>Cu>Mn>Ni. The bioconcentration of Zn and Cd by maize was highest, followed by Mn, Cu, and Ni. SOM, pH, and salinity were the important factors regulating soil available HMs and, subsequently, HM accumulation in maize. Among the three OAs, SS is most effective in decreasing soil salinity and increasing the SOM, bioavailability and bioconcentration of HMs. On the other hand, CM was the best OA because it promoted significant maize growth yet maintained low HM contamination risk.

show abstract

supporting

confidence: 91%

Long-term Impact of Organic Amendments on the Bioavailability of Heavy Metals in Mudflat Soil and Their Uptake by Maize

Bai

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Meanwhile, sewage sludge contains inorganics (CaO, SiO 2 , Al 2 O 3 , Fe 2 O 3 , MgO) and other components of cement. [4][5][6] Therefore, considering the technical difficulties of sewage sludge treatment and the soaring price of fossil fuels and cement raw meal, the co-processing of sewage sludge in cement kilns has gained extensive attention in recent years, [7][8][9] and has been considered a cost-effective and environment-friendly route for energy recovery and sludge disposal. [10][11][12] The production of cement consumes large quantity of original materials (clay, limestone, and fuel), which produces lots of air pollutants such as particles, SO 2 and NO X .…”

Section: Introductionmentioning

confidence: 99%

Mechanistic study on NO reduction by sludge reburning in a pilot scale cement precalciner with different CO₂ concentrations

et al. 2019

View full text Add to dashboard Cite

An experimental study on the effects of CO 2 concentration on the release of reducing gases and the NO reduction efficiency by sludge reburning was carried out in a pilot scale cement precalciner. The results indicate that sludge reburning shows an ideal NO reduction activity. The best NO reduction efficiency of 54% is reached when the CO 2 concentration is 25 vol%. Characteristic analysis of the sludge shows that the main types of reducing gases generated by sludge reburning are HCN, NH 3 , CO and CH 4 . Among them, CO 2 concentration plays a crucial role in the release of HCN, CO and CH 4 . The mechanistic study indicates that NO reduction is dominated by homogeneous reduction during the sludge reburning process, in particular the reducing gases of CO and NH 3 have significant influences on the NO reduction. Meanwhile, the effect of CO 2 concentration on NO reduction is mainly due to the difference in CO release. The results of the present study not only provide insight into the mechanism of NO reduction by sludge reburning, but could also contribute to the development of NO X removal technology in the cement industry.

show abstract

“…At the same time, viruses, bacteria and organic matter will be removed after thermal treatment. [16,17] As a matter of fact, ceramic sintering has become one of the most e cient way to stabilize poisonous heavy metals. Previous studies have reported the utilization of sewage sludge incineration residues as precursor for zinc stabilization at high temperature.…”

Section: Introductionmentioning

confidence: 99%

Cadmium Stabilization by Sewage Sludge Incineration Ash

Lyu¹,

Meng²,

Tang³

et al. 2020

Preprint

View full text Add to dashboard Cite

Cadmium (Cd), as a common ingredient in the production process of nickel cadmium batteries, can lead to functional disorder in kidneys, liver, lungs, cardiovascular, immune and reproductive systems. Previous studies have shown that cadmium can be stabilized in ceramic systems using clay as precursor, but the excessive exploitation of nonrenewable clay resources has caused great concerns. Hence, it is essential to find alternatives to substitute nonrenewable clay minerals. Sewage sludge incineration residues, with oxides of aluminum and silicon as major component, have attracted much attention because of the potential resource utilization. In this study, CdO and CdNO 3 was used to simulate cadmium-bearing industrial waste, and the stabilization of cadmium was achieved in ceramic matrix provided by the residues of sewage sludge incineration. Through a 2-hour sintering procedure at temperatures ranging from 800°C to 1000°C, cadmium was found to be incorporated into CdAl 2 Si 2 O 8 . The leachability of cadmium significantly declined in sintered samples when extracted in acidic environment. Meanwhile, samples that were pressed into pellets showed better cadmium stabilization efficiency, compared with powder samples. Therefore, this study suggests a promising technique to stabilize cadmium by the utilization of sewage sludge incineration residues as ceramic precursors. The success implementation of current study will further reduce the environmental burden caused by the release of heavy metals from industrial waste. Moreover, the recycling of sewage sludge incineration residues can be realized, and a waste-to-resource strategy is expected.

show abstract

Evaluation of sewage sludge incineration ash as a potential land reclamation material

Cited by 53 publications

References 51 publications

Long-term Impact of Organic Amendments on the Bioavailability of Heavy Metals in Mudflat Soil and Their Uptake by Maize

Long-term Impact of Organic Amendments on the Bioavailability of Heavy Metals in Mudflat Soil and Their Uptake by Maize

Mechanistic study on NO reduction by sludge reburning in a pilot scale cement precalciner with different CO₂ concentrations

Cadmium Stabilization by Sewage Sludge Incineration Ash

Contact Info

Product

Resources

About

Evaluation of sewage sludge incineration ash as a potential land reclamation material

Cited by 53 publications

References 51 publications

Long-term Impact of Organic Amendments on the Bioavailability of Heavy Metals in Mudflat Soil and Their Uptake by Maize

Long-term Impact of Organic Amendments on the Bioavailability of Heavy Metals in Mudflat Soil and Their Uptake by Maize

Mechanistic study on NO reduction by sludge reburning in a pilot scale cement precalciner with different CO2 concentrations

Cadmium Stabilization by Sewage Sludge Incineration Ash

Contact Info

Product

Resources

About

Mechanistic study on NO reduction by sludge reburning in a pilot scale cement precalciner with different CO₂ concentrations