Combining biochar and sewage sludge for immobilization of heavy metals in mining soils

Penido, Evanise Silva; Martins, Gabriel Caixeta; Mendes, Thiago Borges Matos; Melo, Leônidas Carrijo Azevedo; Guimarães, Iara do Rosário; Guilherme, Luiz Roberto Guimarães

doi:10.1016/j.ecoenv.2019.01.110

Cited by 164 publications

(53 citation statements)

References 40 publications

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“…The highest EC values were observed, with values reaching up to 2210 µs/cm when the collected volume was 2.0 L in the SSS treatment and up to 2818 µs/cm when the collected volume was 1.6 L in the USS treatment. The results were similar to that of Penido et al who demonstrated that the addition of sewage sludge represented an increase in EC values [40]. In the SSS treatment, the formation of phosphate precipitation with passivating agents such as rock phosphate and superphosphate made EC values lower than those in the USS treatment.…”

Section: Ph and Ec In The Leachatesupporting

confidence: 89%

Leaching Characteristics of Heavy Metals and Plant Nutrients in the Sewage Sludge Immobilized by Composite Phosphorus-Bearing Materials

Fang

Wang³

et al. 2019

IJERPH

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In order to evaluate the environmental risk caused by land application of sewage sludge, leaching characteristics of heavy metals and plant nutrients in the sewage sludge immobilized by composite phosphorus-bearing materials were investigated. Their cumulative release characteristics were confirmed. Furthermore, the first-order kinetics equation, modified Elovich equation, double-constant equation, and parabolic equation were used to explore dynamic models of release. Results showed that sewage sludge addition significantly increased electricity conductivity (EC) in leachates, and the concentrations of heavy metals (Cu, Cr, Zn) and plant nutrients (N, P, K) were also obviously increased. The highest concentrations of Cu, Cr, and Zn in the leachates were all below the limit values of the fourth level in the Chinese national standard for groundwater quality (GB/T14848-2017). The immobilization of composite phosphorus-bearing materials reduced the release of Cu and Cr, while increased that of Zn. The fitting results of modified Elovich model and double-constant model were in good agreement with the leaching process of heavy metals and plant nutrients, indicating their release process in soil under simulated leaching conditions was not a simple first-order reaction, but a complex heterogeneous diffusion process controlled by multifactor.

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Section: Ph and Ec In The Leachatesupporting

confidence: 89%

Leaching Characteristics of Heavy Metals and Plant Nutrients in the Sewage Sludge Immobilized by Composite Phosphorus-Bearing Materials

Fang

Wang³

et al. 2019

IJERPH

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“…Both DC-F1 and biochar decreased Hg uptake in lettuce shoots, the most effective among all treatment combinations. Penido et al (2019) studied the effect of sewage sludge-derived biochar (SSB), wood charcoal powder (hereafter named wood biochar -WB) and/or raw sewage ANNUAL LITERATURE REVIEW sludge (SS) on the bioavailability of Cd, Pb and Zn in mining soils. Individual and combined biochar application with SS lowered the bioavailability of tested heavy meals and enhanced the germination rate, germination %, height (cm), and dry weight of tested plants.…”

Section: Physical Treatmentmentioning

confidence: 99%

Hazardous wastes treatment technologies

Shih

et al. 2020

Water Environment Research

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“…Compared to the limestone and organic sorbents effects, biochar can be a sustainable alternative for the alleviation of soil acidity and metal toxicity. Therefore, the biochar amendment appears to be a novel approach for aluminum detoxification in acidic soils (Qian et al, 2013) and remediation of soils contaminated by trace elements (Penido et al, 2019;Li et al, 2017). In addition to the effects on the immobilization of toxic metals, biochars are sources of nutrients for plants (Table 1) and high levels of zinc present in some biochars may decrease the cadmium uptake by plants through inhibition mechanisms (Rizwan et al, 2016).…”

Section: A B Cmentioning

confidence: 99%

“…To solve the problem of both aluminum toxicity and the disposal of organic waste in the environment, an alternative is the use of biochar as a soil conditioner (Penido et al, 2019). The transformation of sewage sludge into biochar eliminates pathogenic microorganisms, significantly reduces the volume of waste, and incorporates a more recalcitrant carbon source into the soil (Paz-Ferreiro, Nieto, Mendez, Askeland, & Gasco, 2018).…”

Section: Introductionmentioning

confidence: 99%

Alleviation of aluminum and cadmium toxicity by biochar and its potential toxicity to sorghum

Almeida

Santos

Pandey

et al. 2020

SCA

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Highlights:Use of biochar to mitigate soils contaminated by trace elements. Pyrolysis as an alternative to sewage sludge disposal in the environment. Some mechanisms involved in the alleviation of soil acidity by biochar. A rapid and simple test to assess biochar toxicity. Biochar as a strong and effective sorbent for aluminum and cadmium. AbstractBiochar has been used as an alternative in organic wastes management and to alleviate trace elements toxicity. The aim of this research was to use a rapid and simple test to detect the potential toxic effects of biochar and its ability to alleviate aluminum and cadmium toxicity to seeds and seedlings of Sorghum bicolor L. Two experiments were carried out in Petri dishes with two different biochars where sorghum seeds were exposed to aluminum (experiment 1) and cadmium (experiment 2) solutions. The experimental designs were completely randomized, with five doses of aluminum or cadmium in aqueous solution (0, 0.5, 1, 2, and 4 mmol/L of Al or Cd), combined with or without the addition of 0.25 g of biochar from sugarcane bagasse or from sewage sludge. Compared to treatments without biochar, in the treatments with biochar, higher seed germination rate and growth of sorghum seedlings were obtained. Moreover, the biochars were not toxic to sorghum and they decreased the toxicity of aluminum and cadmium, mainly the biochar from sewage sludge that presented higher pH and greater occurrence of functional groups in its particles. ResumoO biochar tem sido utilizado como uma alternativa para o manejo de resíduos orgânicos e na remedição da toxidez por elementos traços. Objetivou-se com essa pesquisa usar um teste rápido e simples para detectar os potenciais efeitos tóxicos do biochar e sua capacidade de minimizar a toxidez por alumínio e cádmio para sementes e plântulas de Sorghum bicolor L. Conduziu-se dois experimentos em placas de Semina: Ciências Agrárias, Londrina, v. 41, n. 1, p. 95-108, jan./fev. 2020 Almeida, J. B. et al.Petri com dois diferentes biochars onde as sementes de sorgo foram expostas às soluções de alumínio (experimento 1) e cádmio (experimento 2). Os delineamentos experimentais foram inteiramente casualizados, com cinco doses de alumínio ou cádmio na solução aquosa (0, 0,5, 1, 2 e 4 mmol L-1 de Al ou Cd), combinados com ou sem a adição de 0,25g de biochar de bagaço de cana-de-açúcar (BB) ou de lodo de esgoto (BS). Nos tratamentos com biochar, obtém-se maior percentagem de germinação de sementes e crescimento de plântulas de sorgo em relação a ausência de biochar. Além disso, os biochars não são tóxicos para o sorgo e minimizam a toxicidade por alumínio e cádmio, principalmente o BS que apresenta maior pH e maior ocorrência de grupos funcionais em suas partículas. Palavras-chave: Sorghum bicolor. Elementos traços. Acidez do solo. Pirólise. Resíduos orgânicos.

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Combining biochar and sewage sludge for immobilization of heavy metals in mining soils

Cited by 164 publications

References 40 publications

Leaching Characteristics of Heavy Metals and Plant Nutrients in the Sewage Sludge Immobilized by Composite Phosphorus-Bearing Materials

Leaching Characteristics of Heavy Metals and Plant Nutrients in the Sewage Sludge Immobilized by Composite Phosphorus-Bearing Materials

Hazardous wastes treatment technologies

Alleviation of aluminum and cadmium toxicity by biochar and its potential toxicity to sorghum

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