Bioremediation of Congo red dye in immobilized batch and continuous packed bed bioreactor by Brevibacillus parabrevis using coconut shell bio-char

Talha, Abu; Goswami, Mandavi; Giri, Balendu Shekher; Sharma, Anjaney; Nath, Birendra; Singh, Ram Sharan

doi:10.1016/j.biortech.2017.12.081

Cited by 144 publications

(42 citation statements)

References 30 publications

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“…Coconut shell was the predominantly used part for the removal of dyes from the waste water. There are three ways to modify the coconut shell prior to the removal of dyes, namely activated carbon [39][40][41][42][43], acid or base treatment [44,45], and as immobilizer for the bacteria [46]. Table 1 summarizes the physical parameters, adsorption kinetic and equilibrium isotherm of the modified coconut shell.…”

Section: Coconut Shellmentioning

confidence: 99%

Bioremediation of dyes using coconut parts via adsorption: a review

Chong

Tam

2020

SN Appl. Sci.

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Coconut (Cocos nucifera) is a palm tree belonging to the Arecaceae family that possesses a thousand and one uses. Each part of the tree has it's uses and can be made into products. Also, various parts of the coconut tree have been utilized to remove various types of dyes from water and waste water via chemical, physical and biological methods. Adsorption is one of the widely used physical methods over their counterparts owing to cost efficiency and ease in handling. The key parameters for the adsorption process are the initial concentration of adsorbate, dosage of adsorbent, the pH and contact time. Additionally, the kinetic parameters, equilibrium isotherm and thermodynamics of the adsorption of dyes on the adsorbent were explored.

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Section: Coconut Shellmentioning

confidence: 99%

Bioremediation of dyes using coconut parts via adsorption: a review

Chong

Tam

2020

SN Appl. Sci.

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“…Firstly, bacteria adsorption capacity of BC relies on the large specific surface area and the pore structure of BC [12]. Generally, a large specific surface area and a rich pore structure could enhance the adsorption capacity of biochar, which may not only help bacteria adsorb to the surface of BC, but also increase the chance of contact between bacteria and NH 4 + -N [12,32]. Therefore, the NaOH-and NaOH+Mg 2+ -modified BCs with the large specific surface area (2.99 and 3.56 times of original BC) facilitated the adsorption of bacteria more readily than the original, HNO 3 -and Mg 2+ -modified BCs.…”

Section: Microbe Amount Adhering To the Surfaces Of Original And Modimentioning

confidence: 99%

“…Zhang et al [11] demonstrated that the immobilization of Corynebacterium variabile HRJ4 with wood chips BC showed higher degradation of total petroleum hydrocarbons up to 78.9% after 7-d incubation as compared to the free bacteria. Abu Talha et al [12] found that the degradation of Congo red dye of coconut shell BC-based immobilization body was significantly higher than that of free cells. The result was mainly due to the large specific surface area of coconut shell BC, which dramatically increased the contact area between dye and microbes and the active site on the BC, which can help the microbes to capture the contaminant in bulk solution.…”

Section: Introductionmentioning

confidence: 99%

Ammonium removal efficiency of biochar-based heterotrophic nitrifying bacteria immobilization body in water solution

Wang

Ren

Qiao

et al. 2020

Environmental Engineering Research

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In order to explore the performance of biochar-based microbial immobilization body in ammonium removal from water and potential mechanisms, a strain of heterotrophic nitrifying bacteria (HNB) was isolated from activated sludge, and the biochemical and molecular biological identification of HNB was carried out. Moreover, HNO3-, Mg2+-, NaOH-, and NaOH+Mg2+-modified rice husk-derived biochars were prepared. Then all the five kinds of biochars, including the original biochar, were used as carriers of HNB to remove NH4+-N from water. Results showed that HNB was classified as Pseudomonas, and the 72-h NH4+-N removal ratio of the free bacteria reached 80.24%. Compared with biochar itself, biochar-based HNB immobilization body showed a much stronger ability to remove NH4+-N, especially for NaOH- and NaOH+Mg2+-modified biochars. At the initial NH4+-N concentration of 100 mg/L and biochar addition dose of 10 g/L, NH4+-N removal ratio of NaOH- and NaOH+Mg2+-modified biochar-based HNB immobilization bodies reached 57.78% and 58.35% after 5 h, and reached 88.66% and 90.93% after 48 h respectively, which were obviously higher than the original, HNO3- and Mg2+-modified biochar-based HNB immobilization bodies. The phenomenon resulted from significantly higher bacteria adsorption ability of NaOH- and NaOH+Mg2+-modified biochars, which reached 773.75 and 941.17 nmol P/g biochar, respectively.

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“…It is an inorganic carrier with a long use time, low price, good thermodynamic stability, and high mechanical strength. It is an ideal microbial immobilization carrier and has been widely used in the treatment of industrial wastewater and organic waste gas [30,31]. The immobilized-microorganism technique (IMT) could considerably enhance the removal of polycyclic aromatic hydrocarbons (PAHs) by using biochar as carriers [32].…”

Section: Introductionmentioning

confidence: 99%

Effect of Cornstalk Biochar Immobilized Bacteria on Ammonia Reduction in Laying Hen Manure Composting

et al. 2020

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NH3 emission has become one of the key factors for aerobic composting of animal manure. It has been reported that adding microbial agents during aerobic composting can reduce NH3 emissions. However, environmental factors have a considerable influence on the activity and stability of the microbial agent. Therefore, this study used cornstalk biochar as carriers to find out the better biological immobilization method to examine the mitigation ability and mechanism of NH3 production from laying hen manure composting. The results from different immobilized methods showed that NH3 was reduced by 12.43%, 5.53%, 14.57%, and 22.61% in the cornstalk biochar group, free load bacteria group, mixed load bacteria group, and separate load bacteria group, respectively. Under the simulated composting condition, NH3 production was 46.52, 38.14, 39.08, and 30.81 g in the treatment of the control, mixed bacteria, cornstalk biochar, and cornstalk biochar separate load immobilized mixed bacteria, respectively. The cornstalk biochar separate load immobilized mixed bacteria treatment significantly reduced NH3 emission compared with the other treatments (p < 0.05). Compared with the control, adding cornstalk biochar immobilized mixed bacteria significantly decreased the electrical conductivity, water-soluble carbon, total nitrogen loss, and concentration of ammonium nitrogen (p < 0.05), and significantly increased the seed germination rate, total number of microorganisms, and relative abundance of lactic acid bacteria throughout the composting process (p < 0.05). Therefore, the reason for the low NH3 emission might be due not only to the adsorption of the cornstalk biochar but also because of the role of complex bacteria, which increases the relative abundance of lactic acid bacteria and promotes the acid production of lactic acid bacteria to reduce NH3 emissions. This result revealed the potential of using biological immobilization technology to reduce NH3 emissions during laying hen manure composting.

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Bioremediation of Congo red dye in immobilized batch and continuous packed bed bioreactor by Brevibacillus parabrevis using coconut shell bio-char

Cited by 144 publications

References 30 publications

Bioremediation of dyes using coconut parts via adsorption: a review

Bioremediation of dyes using coconut parts via adsorption: a review

Ammonium removal efficiency of biochar-based heterotrophic nitrifying bacteria immobilization body in water solution

Effect of Cornstalk Biochar Immobilized Bacteria on Ammonia Reduction in Laying Hen Manure Composting

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