Sericin-derived activated carbon-loaded alginate bead: An effective and recyclable natural polymer-based adsorbent for methylene blue removal

Bioadsorption of methyl orange and methylene blue contained in water using as bioadsorbent natural brushite (nDCPD)

“…This main that the balance is carried out without limitations of the formation of the monolayer and surface of nDCPD is highly heterogeneous allowing to have different adsorption heats scattered throughout the s urface making it more efficient to remove the dyes. This result is consistent with the reported in the literature for different bioadsorbent s (Kyzas et al, 2017;Kwak et al, 2018;Guo et al, 2014;Zhang et al, 2019;Uddin & Baig, 2019;Cao et al, 2018;Rahman, Akter, & Abedin, 2013;Do-Nascimiento et al, 2014;Tabrizi & Yavari, 2015;Uyar, Kaygusuz, & Erim, 2016;Li et al, 2016;Zong, Li, Tian, Lin, & Lu, 2018;Mudyawabikwa, Mungondori, Tichagwa, & Katwire, 2017;Cheng et al, 2015;Raval, Shah, & Shah, 2016;Shakoor & Nasar, 2017;Mashkoor & Nasar, 2020b;Bulgariu et al, 2019;Kadhom, Albayati, Alalwan, & Al-Furaiji, 2020), but there are other reports where it is mentioned that the best model are Langmuir and SIPS (Qian, Luo, Wang, Guo, & Li, 2018;Mounia et al, 2018;He et al, 2019;Shakoor & Nasar, 2016;Sun et al, 2019;Ma et al, 2018;Islam, Ahmed, Khanday, Asif, & Hameed, 2017;Yang & Guan, 2018;Lv et al, 2019; Marques In general, both models have been reported as the most suitable for adsorption of dyes and already depends on the criteria used to choose the best. The value of n<1 for all temperatures implies that the adsorption on the surface of the bioadsorbent is a physical and favorable process, this was corroborated by Shakoor and Nasar (2017).…”

“…Therefore, it confirms what was found in the study in balance, in addition to mentioning that the process is feasible. To choose the best fit, the R 2 and Δq criteria (Table 5) were used, obtaining for the MB case the best model that fits is PSO, indicating t hat the adsorption of the dye on the surface of nDCPD needs two active sites, according to the published in various jobs this is the best model for the adsorption of MB with different adsorbents (Kwak et al, 2018;Uddin & Baig, 2019;Varaprasad et al, 2018;Liu et al, 2019;Zong et al, 2018;Mudyawabikwa et al, 2017;Jaseela et al, 2019;Uddin & Nasar, 2020;Mashkoor & Nasar, 2020a;Pessôa et al, 2019;Bulgariu et al, 2019), while for MO (Table 6) the most appropriate fit is the PFO model involves that only need an one active site to capture the dye, in this case, has been mentioned that the best model for this dye is P FO model (Mounia et al, 2018;Yang & Guan, 2018;Lima et al, 2015), it…”

“…Governments seek a responsible use of water by the industries such as ceramics, clothing, photography, paintings, and others such as food, pharmaceutical, textile, etc. (Pargoletti et al, 2019;Holkar et al, 2019;Pavithra, Kumar, Jaikumar, & Rajan, 2019;Kwak, Hong, Lee, & Jin, 2018). These industries use both synthetic and vegetable dyes for skin processing and prints, etc., however, after the dying process, around 80 % of these dyes lose remain in the dye bath making coloured effluent (Panneerselvam, Arul, Warrier, Asokan, & Dong, 2019), which is discharged into the drain along with wastewater where most cases have no treatment which causes great pollution in lakes and rivers that are the main source of drinking water for the population.…”

“…Dyes are toxic compounds and can harm aquatic animals (Bhatia, Sharma, Singh, & Kanwar, 2017;Guo, Li, Liu, & Lv, 2014;Zhang, Wua, & Cha, 2019). Moreover, they can prevent light from being in contact with plants causing photosynthesis and other biochemical processes to be directly affected can lead to the decreased oxygen concentration in water (Bulgariu et al, 2019;Kwak et al, 2018;Guo et al, 2014;Wang, Zhou, Jiang, & Sun, 2008). In the case of methylene blue (MB) particles have an aromatic heterocyclic structure and is a cationic dye, it can have serious consequences for human living beings whether contact or intake can cause headache, gastritis, diarrhea among other diseases related to the digestive system (Nayak & Pal, 2017;Altintig, Altundag, Tuzen, & Sari, 2017).…”

Evaluation of Equilibrium Isotherms and Kinetic Parameters for the Adsorption of Methyl Orange Dye onto Blue Green Algal Biomass

“…Researchers have successfully employed adsorbents like activated carbon prepared from agricultural wastes [14], activated globe Artichoke leaves [15], cresson (Lepidium sativum) seeds [16], alginate/sericin composite beads [17] and biomaterials like chitin, chitosan, yeast, fungi and bacteria [9] in order to concentrate and remove dyes from solutions. However, these low cost adsorbents have low adsorption capacities.…”