Chromium adsorption on surface activated biochar made from tannery liming sludge: A waste-to-wealth approach

Hashem, Md. Abul; Payel, Sofia; Mim, Sadia; Hasan, Md. Anik; Nur‐A‐Tomal, Md. Shahruk; Rahman, Md. Aminur; Sarker, Majher I.

doi:10.1016/j.wse.2022.09.001

Cited by 18 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Chromium is present in trivalent and hexavalent forms in the aqueous solution [2, 3]. The World Health Organization allowed certain permissible limit for the element, i.e., 0.1 mg·L -1 in the case of surface water, whereas in the case of drinking water, it should be 0.05 mg·L -1 [4].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Adsorptive Removal of Chromium (VI) from Aqueous Solution on Using Aged Refuse: Resource Recovery and Environmental Applications

Manimekalai

Sivanesan

Kumar

2023

Adsorption Science & Technology

View full text Add to dashboard Cite

“Aged refuse” corresponds to municipal solid waste material dumped in land, for several years. This solid waste material is chosen as an adsorbent for the current study since it is available abundantly in the state of Tamil Nadu, India, and has not been used for any other applications. The current study was conducted to get rid of the element chromium (VI) from wastewater by using the adsorption process. The aged refuse was analytically tested through various processes such as BET, TGA, XRD, SEM, and FTIR to determine the surface morphology, functional groups, thermal stability, nature of the crystalline, and surface area. The researchers conducted the batch adsorption study to validate the influence exerted by different sorts of adsorption parameters like contact time (10-100 min), initial concentration of the pollutant (50 mg·L-1 to 250 mg·L-1), pH (1-7), and the dosage of the adsorbent (0.5 g·L-1-3.0 g·L-1). In the current study, the researchers achieved the maximum adsorption capacity of 195.54 mg·g-1. From the kinetic results, it can be understood that the pseudo-first-order model was the most suitable kinetic model. Further, the study outcomes confirm that the Langmuir isotherm model is the best fit by isotherm studies which indicate the monolayer adsorption process. This study indicated that the aged refuse can be potentially used in removing Cr (VI) from water environment under standard optimized conditions.

show abstract

Section: Introductionmentioning

confidence: 99%

Enhanced Adsorptive Removal of Chromium (VI) from Aqueous Solution on Using Aged Refuse: Resource Recovery and Environmental Applications

Manimekalai

Sivanesan

Kumar

2023

Adsorption Science & Technology

View full text Add to dashboard Cite

show abstract

“…Pyrolysis temperatures increased substantially, causing the iron species to change significantly, which were namely from a high valent state to a low valent state, and finally even a zero valent state: Fe 2 O 3 → Fe 3 O 4 → FeO → Fe(0) [18,19]. Meanwhile, some studies showed that the pyrolysis temperature of biochar could affect Cr(VI) removal [20][21][22]. Despite this, the influence of iron-rich biochar in reducing Cr(VI) was not clearly identified, particularly at different pyrolysis temperatures when the species of indigenous iron in the iron-rich sludge changed accordingly.…”

Section: Introductionmentioning

confidence: 99%

Reduction of Cr(VI) by Synergistic Effects of Iron-Rich Biochar and Pseudomonas aeruginosa

Wang

Xiao

et al. 2023

Water

View full text Add to dashboard Cite

In view of the poisonous nature of Cr(VI), it is of great significance to explore an effective and environmentally friendly method to remove Cr(VI). The potential synergistic effects of Cr(VI) reduction by iron-rich biochar and Pseudomonas aeruginosa (PA) were systematically explored in this study. Significantly, in association with PA, the biochar produced by pyrolyzing iron-rich sludge at 300 °C (Fe-300) was more efficient at reducing Cr(VI) than that pyrolyzed at 800 °C (Fe-800), and the performance was always better than biochar or PA alone. For instance, upon an incubation for 20 days, the Cr(VI) removal efficiencies in the groups Cr + Fe-300 + PA, Cr + Fe-800 + PA, Cr + Fe-300, Cr + Fe-800 and Cr + PA were 80%, 19%, 51%, 0% and 35%, respectively. Through further analyses of phosphorus (P) and iron species as well as the cell extraction components of PA, the high Cr(VI) efficiency in Fe-300 + PA was mainly attributed to two aspects: (1) more P (mainly in the form of ortho phosphorus) was released from Fe-300 by PA compared to that from Fe-800, and the released P may react with Fe(II), Fe(III), Cr(VI) and Cr(III) ions to form precipitation; (2) cytoplasmic and periplasmic proteins as well as membrane proteins extracted from PA further helped to reduce Cr(VI). A novel approach for reducing Cr(VI) may be proposed by using the potential synergistic effects of iron-rich biochar and PA from this study.

show abstract

“…Muitos métodos físico-químicos têm sido propostos para a remoção do cromo em águas, incluindo a filtração por membranas, precipitação química, eletrocoagulação, troca iônica, diálise e eletrodiálise (DEH-GHANI et al, 2016;HASHEM et al, 2022). Contudo, todos apresentam limitações associadas geralmente à eficácia, ao custo e à geração de poluentes secundários (HASHEM et al, 2022). Em contraste, a adsorção é um método que vem ganhando notoriedade devido à simplicidade, baixo custo e eficácia que apresenta.…”

Section: Introductionunclassified

Aplicação da casca de arroz como adsorvente para remoção de cromo hexavalente de soluções aquosas

Gamboa

Ries

Gasparin

et al. 2022

R. Eletr. Cient. da Uergs

View full text Add to dashboard Cite

O presente estudo propõe o emprego da casca de arroz, sem (CA) e com pré-tratamento ácido (CAH+), como adsorvente de baixo custo na remoção de Cr(VI) em soluções aquosas. Caracterizações morfológicas, químicas e estruturais realizadas para ambos os adsorventes revelaram considerável grau de heterogeneidade superficial, tendência à amorficidade, baixa área superficial e presença de grupamentos característicos de sílica. Os ensaios de adsorção avaliaram a influência da dosagem de adsorvente, pH, concentração inicial de Cr(VI) e tempo de interação. Os parâmetros de adsorção otimizados foram: dosagem de adsorvente (5 g.L-1), pH (1,0), concentração inicial de cromo (5 mg.L-1) e tempo de interação (60 min). Os dados experimentais se ajustaram melhor à isoterma de Freundlich e ao modelo cinético de pseudo-segunda ordem, para ambos os adsorventes. Observou-se que ambos foram capazes de remover Cr(VI), entretanto, a CAH+ apresentou resultados superiores em todos os ensaios realizados. A capacidade de adsorção máxima de Cr(VI) encontrada para a casca de arroz sem pré-tratamento foi de 2,27 mg.g-1 e, para a casca de arroz com pré-tratamento, foi de 5,19 mg.g-1. Os resultados obtidos sugerem que a casca de arroz, sem e com pré-tratamento, pode ser empregada como adsorvente alternativo aos adsorventes convencionalmente empregados, sendo eficiente, acessível e de baixo custo para a remoção de Cr(VI) em soluções aquosas. Palavras-chave: Casca de arroz; cromo hexavalente; adsorção; materiais lignocelulósicos. Abstract Application of rice husks as adsorbent for the removal of hexavalent chromium from aqueous solutions The present study proposes the use of rice husks, without (CA) and with acidic pretreatment (CAH+), as a low-cost adsorbent for the removal of Cr(VI) in aqueous solutions. Morphological, chemical, and structural characterizations performed for both adsorbents revealed a considerable degree of surface heterogeneity, a tendency toward amorphousness, low surface area, and the presence of characteristic silica clusters. In the adsorption experiments the influence of adsorbent dosage, pH, initial Cr(VI) concentration and interaction time was investigated. The optimized adsorption parameters were: adsorbent dosage (5 g.L-1), pH (1.0), initial chromium concentration (5 mg.L-1) and interaction time (60 min). The experimental data better fitted the Freundlich isotherm and the pseudo-second order kinetic model for both adsorbents. It was found that both were able to remove Cr(VI), but CAH+ showed superior results in all tests performed. The maximum adsorption capacity of Cr(VI) was 2.27 mg.g-1 in rice husks without pretreatment and 5.19 mg.g-1 in rice husks with pretreatment. The obtained results indicate that rice husks, without and with pretreatment can be used as an alternative adsorbent, as they are efficient, accessible and cost-effective for the removal of Cr(VI) in aqueous solutions. Keywords: Rice husk; hexavalent chromium; adsorption; lignocellulosic materials. Resumen Aplicación de cascarilla de arroz como adsorbente para la remoción de cromo hexavalente de soluciones acuosas El presente estudio propone el uso de cascarilla de arroz, sin (CA) y con pretratamiento ácido (CAH+), como adsorbente de bajo costo para la remoción de Cr(VI) en soluciones acuosas. Las caracterizaciones morfológicas, químicas y estructurales realizadas para ambos adsorbentes revelaron un grado considerable de heterogeneidad superficial, tendencia a la amorfización, baja área superficial y presencia de agregados de sílice característicos. Los ensayos de adsorción evaluaron la influencia de la dosis de adsorbente, el pH, la concentración inicial de Cr(VI) y el tiempo de interacción. Los parámetros de adsorción optimizados fueron: dosis de adsorbente (5 g.L-1), pH (1.0), concentración inicial de cromo (5 mg.L-1) y tiempo de interacción (60 min). Los datos experimentales se ajustan mejor a la isoterma de Freundlich y al modelo cinético de pseudo segundo orden, para ambos adsorbentes. Se observó que ambos fueron capaces de remover Cr(VI), sin embargo, CAH+ mostró resultados superiores en todas las pruebas realizadas. La máxima capacidad de adsorción de Cr(VI) encontrada para cascarilla de arroz sin pretratamiento fue de 2,27 mg.g-1 y para cascarilla de arroz con pretratamiento fue de 5,19 mg.g-1. Los resultados obtenidos sugieren que la cascarilla de arroz, sin y con pretratamiento, puede ser utilizada como adsorbente alternativo a los adsorbentes convencionales, siendo eficiente, accesible y de bajo costo para la remoción de Cr(VI) en soluciones acuosas. Palabras clave: Cáscara de arroz; cromo hexavalente; adsorción; materiales lignocelulósicos.

show abstract

Chromium adsorption on surface activated biochar made from tannery liming sludge: A waste-to-wealth approach

Cited by 18 publications

References 39 publications

Enhanced Adsorptive Removal of Chromium (VI) from Aqueous Solution on Using Aged Refuse: Resource Recovery and Environmental Applications

Enhanced Adsorptive Removal of Chromium (VI) from Aqueous Solution on Using Aged Refuse: Resource Recovery and Environmental Applications

Reduction of Cr(VI) by Synergistic Effects of Iron-Rich Biochar and Pseudomonas aeruginosa

Aplicação da casca de arroz como adsorvente para remoção de cromo hexavalente de soluções aquosas

Contact Info

Product

Resources

About