Question

biochemical processes in plants explain ​

Answer 1

Answer:

plants r pressing in the roots be

Answer 2

Answer:

your answer is here buddy......

#biochemical process_

6 Metal Bioaccumulation and Biotransformation by Bacteria

Biochemical processes such as bioleaching involving Thiobacillus spp. bacteria and Aspergillus niger, fungus, biosorption of low concentrations of metals in water by algal or bacterial cells, bio-oxidation or bioreduction of metal accumulation by Bacillus subtilis and sulfate-reducing bacteria and biomethylation of metals such as arsenic, cadmium, mercury, or lead, have shown some promises and could be used for soil sediment treatments (Mulligan et al., 2001). Bacillus circulans and Bacillus megaterium reported to bioaccumulate 34.5 and 32.0 mg/g Cr, respectively, during 24 h (Srinath et al., 2002). Similarly, soil bacterium B. subtilis was reported to grow and reduce chromate at concentrations ranging from 0.1 to 1 mM K2CrO4 (Garbisu et al., 1998). Faisal et al. (2005) reported that Bacillus cereus S-6 completely reduced Cr(VI), and Oscillatoria intermedium CrT-1 reduced Cr(VI) by 98% and 70%, respectively, after 96 h from the inoculated medium. Viti et al. (2003) reported Corynebacterium hoagii from a chromium-polluted soil capable of catalyzing the reduction of Cr(VI) to Cr(III), a less toxic and less water-soluble form of chromium and suggested this approach permitted selection of some bacterial strains, which could be used for bioremediation of Cr(VI)-polluted environments. Megharaj et al. (2003) found Arthrobacter sp. could reduce Cr(VI) up to 50 μg/mL, whereas Bacillus sp. did not able to reduce Cr(VI) beyond 20 μg/mL and demonstrated Arthrobacter sp. has a great potential for bioremediation of Cr(VI)-containing waste. Lee et al. (2006) isolated indigenous bacteria from black, clay-like sediments from the area of the pigment manufacturing factories in Dongducheon city, Korea, contaminated by metals and found that enriched bacterial consortium reduced more than 99% of dissolved Cr(VI) in 96 h from the onset of the experiments under anaerobic condition suggested these indigenous bacteria may play a role in the treatment of Cr(VI)-contaminated sediments. Branco et al. (2004) reported Ochrobactrum strain 5bVl1 resists high Cr(VI) concentrations and has a high Cr(VI)-reducing ability, making it valuable to all in bioremediation. Quan et al. (2006) presented direct detoxification of chromium slag by using microorganisms and showed a bacterial consortium can efficiently accelerated Cr(VI) leaching rate and removal.

Processing Technologies

Marc J. Rogoff PhD, in Solid Waste Recycling and Processing (Second Edition), 2014

Biochemical

The biochemical process is based on breaking down the cellulosic part of the organic fraction of the waste stream. This would include certain foods (e.g., vegetables, fruits), paper products, and yard vegetation. Biosolids can also be added as a waste material. All other materials in the waste stream should be removed prior to the process.

In the process, following drying and shredding of the waste, the prepared waste stream is mixed with water and sulfuric acid in a closed reactor vessel. This causes a reaction that in conjunction with common bacteria already in the waste breaks down the material into sugar compounds and a by-product known as lignin. There are some companies that are testing natural enzymes, instead of the strong acid chemical, to initiate thisreaction.