Distribution of heavy metals in sediments and their bioaccumulation on benthic macroinvertebrates in a tropical Brazilian watershed

Schwantes, Daniel; Gonçalves, Affonso Celso; Manfrin, Jéssica; Campagnolo, Marcelo Ângelo; Zimmermann, Juliano; Conradi, Élio; Bertoldo, Danieli Cristina

doi:10.1016/j.ecoleng.2021.106194

Cited by 21 publications

(5 citation statements)

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“…Makrozoobentos merupakan salah satu organisme akuatik yang berperan penting dalam rantai makanan. Makrozoobentos biasanya hidup di bagian dasar atau sedimen perairan, dan mendapat makanan dari lingkungan sekitar dengan tipe makan berupa filter, scraper, predator dan deposit feeder (Schwantes et al, 2021). Pengaruh limbah penambangan emas yang masuk pada badan perairan akan mempengaruhi kehidupan makrozoobentos baik berupa kondisi fisiologis, komposisi dan keanekaragaman bentos secara longitudinal dari hulu sampai ke hilir sungai.…”

Section: Pendahuluanunclassified

“…Makrozoobentos dari kelompok Gastropoda hidup dengan cara menempel pada substrat perairan dan mendapat makanan dari sedimen. Kondisi perairan yang tercemar Hg dan terakumulasi pada sedimen menyebabkan masuk ke dalam jaringan tubuh Gastropoda (Schwantes et al, 2021). Partikel tercemar dari penambangan emas dapat berupa flok yang terakumulasi pada sedimen perairan dan akan dapat terserap oleh makrozoobentos atau organisme filter-feeder.…”

Section: Hasil Dan Pembahasanunclassified

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Analisis Longitudinal Struktur Komunitas Makrozoobentos yang Tercemar Limbah Pertambangan Emas Skala Kecil di Sungai Cikondang, Jawa Barat

Fadilah,

Nurmala,

Dewi K.P.

et al. 2023

JPPL

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Small-scale gold mining activities are still mostly carried out in various regions in Indonesia. The use of mercury (Hg) in the process of extracting gold from sediments can be a source of pollution for aquatic ecosystems and organisms. The aim of this study was to analyze the macrozoobenthos community structure in the Cikondang River which was affected by Hg pollution due to small-scale gold mining. Sampling was carried out by survey method at 5 sampling points along the Cikondang River from upstream to downstream. Water quality parameters measured include temperature, transparency, current velocity, pH, Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD). Hg concentrations in sediments and macrozoobenthos were measured using automatic mercury analyzer. The results showed that the concentration of Hg in sediments in the Cikondang River ranged from 0.63–52.48 mg/kg and the accumulation of Hg in macrozoobenthos ranged from 0.97 to 0.98. The macrozoobenthos diversity index was 1.50-2.17 and the dominance index was 0.16-0.30. The most group of macrozoobenthos found was from the Gastropod class, followed by the Insecta and Malacostraca classes. Macrozoobenthos in the Cikondang River were only found in the downstream of the river, at Sampling Points 4 and 5 only. This showed that Hg pollution in the Cikondang river is highly toxic, caused macrozoobenthos was not found at Sampling Point 1, 2 and 3.

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Section: Pendahuluanunclassified

Section: Hasil Dan Pembahasanunclassified

Analisis Longitudinal Struktur Komunitas Makrozoobentos yang Tercemar Limbah Pertambangan Emas Skala Kecil di Sungai Cikondang, Jawa Barat

Fadilah,

Nurmala,

Dewi K.P.

et al. 2023

JPPL

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“…43 With these results, adsorption isotherms were constructed and evaluated using the linear and nonlinear mathematical models of Langmuir, 44 Freundlich, 45 Dubinin and Radushkevich (D-R), 46 Sips 47 and Temkin and Pyzhev. 48 Adsorption and desorption efficiencies were obtained by stirring 200 mg of adsorbent in 50 mL of Cd 2+ solution with 10 different Cd 2+ concentrations (5,20,40,60,80,100,120,140,160 and 200 mg L −1 ). Each solution was adjusted to pH 5.0 and stirred for 40 min at 200 rpm and 25 °C.…”

Section: + Adsorption Studiesmentioning

confidence: 99%

“…3 The increasing pollution levels in the environment, especially in developing countries, increase the importance of aiming for better water quality management. 4,5 Therefore, researchers all over the world seek to develop low-cost and environmentally friendly technologies for treating polluted waters 1,[6][7][8] to avoid costly adsorption technologies, such as commercial activated carbon (AC). 9 In this sense, biochar derived from agro-industrial residues has proven to be an effective alternative for removing some of the most hazardous water contaminants, adding value to the byproducts of agro-industry.…”

Section: Introductionmentioning

confidence: 99%

Canola meal‐derived activated biochar treated with NaOH and CO₂ as an effective tool for Cd removal

Gonçalves

Schwantes

Braccini

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: This research assessed the capacity for Cd 2+ removal from water using canola meal-based adsorbents: canola meal chemically activated with 1 mol L -1 NaOH and pyrolyzed for 1 h at 500 °C (CAC) and the second product obtained with a similar process but with a second pyrolysis at 750 °C in CO 2 flow (CAC-CO 2 ). The materials were characterized by their chemical composition and thermal stability and using Fourier transform infrared spectroscopy, pH at point of zero charge (pH PZC ) and scanning electron microscopy. Hydroxyl and carboxyl are the most likely surface functional groups responsible for adsorption. RESULTS:The obtained pH PZC values were 10.83 for CAC and 9.84 for CAC-CO 2 . Both materials presented heterogeneous surfaces with many cavities, which increased their respective surface specific area 23 000-and 540 000-fold compared to canola meal biomass. Our best results were obtained using 4.0 g L −1 of adsorbent, at pH 7.0, with an equilibrium time of 40 and 60 min for CAC and CAC-CO 2 , respectively. The most likely mechanism predominantly involved in Cd adsorption is physical, according to Temkin nonlinear parameters, thermodynamics parameters and excellent recovery rates (67.8%).CONCLUSIONS: The use of canola meal as a feedstock for activated biochar production is an attractive and new possibility for producing a competitive adsorbent.

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“…This last statement has especial importance regarding water treatment technologies. In the last decades, industrialization, agriculture, and expanding urbanization have increased the pressure on fresh water bodies, causing high levels of pollutants, in many cases of contamination with metals [3,4], pesticides [5][6][7], organic matter [8,9], and their environmental impacts on sediments, benthic organisms, humans, i.e., the trophic chain as a whole [7,[10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Effective Cd2+ removal from water using novel micro-mesoporous activated carbons obtained from tobacco: CCD approach, optimization, kinetic, and isotherm studies

Manfrin

Gonçalves

Schwantes

et al. 2021

J Environ Health Sci Engineer

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Purpose This research aimed to develop activated carbons from tobacco by double (thermal-physical) and triple activations (thermal-chemical-physical) for high-efficiency removal of Cd 2+ . Methods The adsorbents were characterized by their chemical composition, point of zero charge (pH PZC ), SEM, FT-IR, BET, and BJH. The subsequent adsorption studies were conducted: optimal conditions (CCD on adsorbent dose versus pH of Cd 2+ solution), kinetics, equilibrium, thermodynamics, and desorption studies. ResultsThe activated carbons have irregular and heterogeneous morphology, surface functional groups COO-, C-O, C-O-C, C=O and O-H, pH PZC of 11.11 and 10.86, and enhanced SSA (especially for CT NaOH + CO 2 = 103.40 g m −2 ). The optimal conditions for Cd 2+ adsorption occur using 4.0 g L −1 , pH from 3.0 to 7.0, with most of the Cd 2+ adsorbed in the first 10-20 min. The goodness of the fit found for pseudo-first order, pseudo-second order, intraparticle diffusion, Langmuir, Freundlich, Dubinin-Radushkevich, Sips, and Temkin suggest the occurrence of Cd 2+ chemisorption and physisorption in mono and multilayers. The values of ∆G° < 0 kJ mol −1 indicate that the observed phenomena are energetically favorable and spontaneous; the values of ∆H° < 0 and the effective desorption rates (58.52% and 44.64%) suggest that the adsorption of Cd 2+ is ruled mainly (but not only) by physical interactions. Conclusion Our excellent results on Cd 2+ removal allow us to state that tobacco use as a raw material for adsorbent development is a renewable and eco-friendly technique, allowing the production of highly effective activated carbons and providing an adequate destination for this waste. KeywordsAlternative adsorbents • Cadmium removal • CCD approach • Advanced water treatment • Nicotiana tabacum • Cigarettes * Daniel Schwantes

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Distribution of heavy metals in sediments and their bioaccumulation on benthic macroinvertebrates in a tropical Brazilian watershed

Cited by 21 publications

References 50 publications

Analisis Longitudinal Struktur Komunitas Makrozoobentos yang Tercemar Limbah Pertambangan Emas Skala Kecil di Sungai Cikondang, Jawa Barat

Analisis Longitudinal Struktur Komunitas Makrozoobentos yang Tercemar Limbah Pertambangan Emas Skala Kecil di Sungai Cikondang, Jawa Barat

Canola meal‐derived activated biochar treated with NaOH and CO₂ as an effective tool for Cd removal

Effective Cd2+ removal from water using novel micro-mesoporous activated carbons obtained from tobacco: CCD approach, optimization, kinetic, and isotherm studies

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Distribution of heavy metals in sediments and their bioaccumulation on benthic macroinvertebrates in a tropical Brazilian watershed

Cited by 21 publications

References 50 publications

Analisis Longitudinal Struktur Komunitas Makrozoobentos yang Tercemar Limbah Pertambangan Emas Skala Kecil di Sungai Cikondang, Jawa Barat

Analisis Longitudinal Struktur Komunitas Makrozoobentos yang Tercemar Limbah Pertambangan Emas Skala Kecil di Sungai Cikondang, Jawa Barat

Canola meal‐derived activated biochar treated with NaOH and CO2 as an effective tool for Cd removal

Effective Cd2+ removal from water using novel micro-mesoporous activated carbons obtained from tobacco: CCD approach, optimization, kinetic, and isotherm studies

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Product

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About

Canola meal‐derived activated biochar treated with NaOH and CO₂ as an effective tool for Cd removal