Biotreatment potential of co-contaminants hexavalent chromium and polychlorinated biphenyls in industrial wastewater: Individual and simultaneous prospects

Yasir, Muhammad; Siddique, Muhammad Tariq; Shabbir, Zunera; Ullah, Habib; Riaz, Luqman; Nisa, Waqar-Un; Rahman, Shafeeq Ur; Shah, Anis Ali

doi:10.1016/j.scitotenv.2021.146345

Cited by 23 publications

(6 citation statements)

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“…Previous studies have intensively discussed humans’ interaction with their surroundings and the influence of anthropogenic activities on the physical environment, either air, water, or soil ( Ukaogo et al., 2020 ; Ur Rahman et al., 2021b ). Anthropogenic activities including industrialization, burning fossil fuels, wastewater disposal, excessive chemical fertilizers, transportation, and urbanization negatively affect the environment by polluting the soil and the environment ( Hussain et al., 2021 ; Kuppala, 2021 ; Yasir et al., 2021 ). Air pollution is one of the major public health threats worldwide, causing approximately 9 million casualties each year ( Manisalidis et al., 2020 ).…”

Section: Introductionmentioning

confidence: 99%

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Assessing the effects of limestone dust and lead pollution on the ecophysiology of some selected urban tree species

et al. 2023

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Soil and air pollution caused by heavy metals and limestone dust are prevalent in urban environments and they are an alarming threat to the environment and humans. This study was designed to investigate the changes in morphological and physiological traits of three urban tree species seedlings (Bombax ceiba, Conocarpus lancifolius, and Eucalyptus camaldulensis) under the individual as well as synergetic effects of heavy metal lead (Pb) and limestone dust toxicities. The tree species were grown under controlled environmental conditions with nine treatments consisting of three levels of dust (0, 10, and 20 g) and three levels of Pb contaminated water irrigation (0, 5, and 10 mg L−1). The results depicted that the growth was maximum in T1 and minimum in T9 for all selected tree species. B. ceiba performed better under the same levels of Pb and limestone dust pollution as compared with the other two tree species. The B. ceiba tree species proved to be the most tolerant to Pb and limestone pollution by efficiently demolishing oxidative bursts by triggering SOD, POD, CAT, and proline contents under different levels of lead and dust pollution. The photosynthetic rate, stomatal conductance, evapotranspiration rate, and transpiration rate were negatively influenced in all three tree species in response to different levels of lead and dust applications. The photosynthetic rate was 1.7%, 3.1%, 7.0%, 11.03%, 16.2%, 23.8%, 24.8%, and 30.7%, and the stomatal conductance was 5%, 10.5%, 23.5%, 40%, 50.01%, 61.5%, 75%, and 90.9%, greater in T2, T3, T4, T5, T6, T7, T8, and T9 plants of B. ceiba, respectively, as compared to T1. Based on the findings, among these three tree species, B. ceiba is strongly recommended for planting in heavy metal and limestone dust-polluted areas followed by E. camaldulensis and C. lancifolius due to their better performance and efficient dust and heavy metal-scavenging capability.

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Section: Introductionmentioning

confidence: 99%

“…It is well known that air pollution causes adverse health effects ( Tolinggi et al., 2014 ; Yasir et al., 2021 ). Limestone, calcareous sedimentary rock in nature, is considered as one of the most versatile minerals globally and used as raw material in various construction industries ( Chaulya, 2003 ).…”

Section: Introductionmentioning

confidence: 99%

Assessing the effects of limestone dust and lead pollution on the ecophysiology of some selected urban tree species

et al. 2023

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“…Chromium is typically present as hexavalent and trivalent species, although the environmental impact associated with chromium presence would vary depending on the species: while hexavalent is highly toxic, bioaccumulable and persistent in nature, even at low concentrations, the trivalent one shows less cytotoxicity [ 4 ]. The environmental effects of hexavalent chromium spillage would be present for years without adequate prevention due to its low biodegradability, adsorption onto the soil and the rapid uptake by plant cells [ 5 ]. Industrial wastewaters are the main sources of hexavalent chromium, including effluents from tanning, electroplating, wood preservation, cement, paint, stainless steel and metallurgical industries [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Hexavalent Chromium Removal from Industrial Wastewater by Adsorption and Reduction onto Cationic Cellulose Nanocrystals

et al. 2022

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Cationic cellulose nanocrystals (CCNC) are lignocellulosic bio-nanomaterials that present large, specific areas rich with active surface cationic groups. This study shows the adsorption removal of hexavalent chromium (Cr(VI)) from industrial wastewaters by the CCNC. The CCNC were synthetized through periodate oxidation and Girard’s reagent-T cationization. The high value of CCNCs cationic groups and anionic demand reveal probable nanocrystal-Cr(VI) attraction. Adsorption was performed with synthetic Cr(VI) water at different pH, dosage, Cr(VI) concentration and temperature. Fast removal of Cr(VI) was found while operating at pH 3 and 100 mg·L−1 of dosage. Nevertheless, a first slower complete removal of chromium was achieved by a lower CCNC dosage (40 mg·L−1). Cr(VI) was fully converted by CCNC into less-toxic trivalent species, kept mainly attached to the material surface. The maximum adsorption capacity was 44 mg·g−1. Two mechanisms were found for low chromium concentrations (Pseudo-first and pseudo-second kinetic models and continuous growth multi-step intraparticle) and for high concentrations (Elovich model and sequential fast growth-plateau-slow growth intraparticle steps). The Sips model was the best-fitting isotherm. Isotherm thermodynamic analysis indicated a dominant physical sorption. The Arrhenius equation revealed an activation energy between physical and chemical adsorption. CCNC application at selected conditions in industrial wastewater achieved a legal discharge limit of 40 min.

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“…The efficiency of each technology depends on soil properties and pollutant characteristics as well as economic criteria and time 15 . In many cases metals and organic pollutants co-exist in the soil 16 – 21 . Particularly, co-contamination with Cr and PCBs can be due to effluents from different industries 21 .…”

Section: Introductionmentioning

confidence: 99%

“…In many cases metals and organic pollutants co-exist in the soil 16 – 21 . Particularly, co-contamination with Cr and PCBs can be due to effluents from different industries 21 . The remediation of co-contaminated soils is often more complicated due to the interactions among pollutants including changes of solubility, speciation and bioavailability, competition for the binding sites of adsorbents and inhibition of microbial metabolism which can conduct to synergistic and antagonistic effects on the remediation results 22 .…”

Section: Introductionmentioning

confidence: 99%

Iron nanoparticles to recover a co-contaminated soil with Cr and PCBs

Gil-Díaz¹,

Pérez

Alonso³

et al. 2022

Sci Rep

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Little attention has been given to the development of remediation strategies for soils polluted with mixture of pollution (metal(loid)s and organic compounds). The present study evaluates the effectiveness of different types of commercial iron nanoparticles (nanoscale zero valent iron (nZVI), bimetallic nZVI-Pd, and nano-magnetite (nFe3O4)), for the remediation of an industrial soil co-contaminated with Cr and PCBs. Soil samples were mixed with nZVI, nZVI-Pd, or nFe3O4 at doses selected according to their reactivity with PCBs, homogenized, saturated with water and incubated at controlled conditions for 15, 45 and 70 days. For each sampling time, PCBs and chromium were analyzed in aqueous and soil fractions. Cr(VI) and Cr leachability (TCLP test) were determined in the soil samples. The treatment with the three types of iron nanoparticles showed significant reduction in Cr concentration in aqueous extracts at the three sampling times (> 98%), compared to the control samples. The leachability of Cr in treated soil samples also decreased and was stable throughout the experiment. Results suggested that nZVI and nZVI-Pd immobilized Cr through adsorption of Cr(VI) on the shell and reduction to Cr(III). The mechanism of interaction of nFe3O4 and Cr(VI) included adsorption and reduction although its reducing character was lower than those of ZVI nanoparticles. PCBs significantly decreased in soil samples (up to 68%), after 15 days of treatment with the three types of nanoparticles. However, nFe3O4 evidenced reversible adsorption of PCBs after 45 days. In general, nZVI-Pd reduced PCB concentration in soil faster than nZVI. Control soils showed a similar reduction in PCBs concentration as those obtained with nZVI and nZVI-Pd after a longer time (45 days). This is likely due to natural bioremediation, although it was not effective for Cr remediation. Results suggest that the addition of nZVI or nZVI-Pd and pseudo-anaerobic conditions could be used for the recovery of soil co-contaminated with Cr and PCBs.

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Biotreatment potential of co-contaminants hexavalent chromium and polychlorinated biphenyls in industrial wastewater: Individual and simultaneous prospects

Cited by 23 publications

References 131 publications

Assessing the effects of limestone dust and lead pollution on the ecophysiology of some selected urban tree species

Assessing the effects of limestone dust and lead pollution on the ecophysiology of some selected urban tree species

Hexavalent Chromium Removal from Industrial Wastewater by Adsorption and Reduction onto Cationic Cellulose Nanocrystals

Iron nanoparticles to recover a co-contaminated soil with Cr and PCBs

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