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Adsorption of Organic Dyes on Non-conventional and Inexpensive Adsorbent

Salman Zafar, Inam ur Rahman, Aziz Khan
Journal of Ongoing Chemical Research · 2019 · DOI 10.5281/zenodo.3229034
Token #142
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Token#142 of SciMatic Articles (ERC-1155), fixed supply 1,000,000
Contract0x0E596B4bb924937aA35D9b342A90347ed6F05eF8
Mint transaction0xea2c676a2400ca11448fa2692a682f283bdb9260c035cb869367dc3731ad69fd · block 12096775
Minted2026-10-01 17:07 UTC
Hash on chain0x0afaab6778008cba22ce0b9224739a51696830e406f6c0b2c27ef9f0ba8121e7
SHA-256 of the record0x0afaab6778008cba22ce0b9224739a51696830e406f6c0b2c27ef9f0ba8121e7
Article today Matches the anchored record.

Allocation at minting

HolderWalletMintedHolds now
SciMatic (10%) 0xc35709AB…277732 100,000 100,000
Salman Zafar 0xe7e8c490…C4d033 300,000 300,000
Inam ur Rahman 0x5f65c575…f28d50 300,000 300,000
Aziz Khan 0xe55c8211…32f4B6 300,000 300,000

The anchored record

Canonical JSON (keys sorted, no spaces, UTF-8). Its SHA-256 is the hash on chain.

{"abstract":"Studies were conducted for the adsorption of textile organic dyes on sawdust of Olea ferruginea. The results revealed that sawdust of Olea ferruginea has fairly high adsorption capacity for textile dyes (VAT Black-4, VAT Blue-20, VAT Green-9, VAT Orange-3RT, VAT Pink-R, VAT Purple-3G, and VAT Red-F3B), collected from local market. Various parameters, such as the amount of adsorbent, reuse of the adsorbent and pH were studied to assess the adsorption capacity of the sawdust. The percent adsorption recorded on 1.0 g of adsorbent were 51% (Black-4), 94% (Blue-20), 75% (Green-9), 85% (Orange-3RT), 81% (Pink-R), 94% (Purple-3G), and 93% (Red-F3B). The results on 2.0 g of adsorbent were found to be 62% (Black-4), 94% (Blue-20), 34% (Green-9), 70% (Orange-3RT), 87% (Pink-R), 74% (Purple-3G), and 82% (Red-F3B). The adsorbent was reused to check its efficacy after being used once and the percent adsorptions of 18.5% (Black), 3.3% (Blue), 40.9% (Green), 30% (Orange), 61.5% (Pink), 26.9% (Purple), and 66.6% (Red) were recorded. The effect of pH was also studied by varying the pH from 2 to 10. Results revealed that pH also has a profound effect on the adsorption capacity of various dyes.","abstract_source":"original","authors":["Salman Zafar","Inam ur Rahman","Aziz Khan"],"date":"2019","doi":"10.5281/zenodo.3229034","id":142,"issue":1,"journal":{"issn":"2651-4338","name":"Journal of Ongoing Chemical Research"},"pdf_sha256":"feb8574768bff3d1c92de5618e07038a90856a1165df66738b89d59bca80b2ea","schema":"scimatic-article/1","title":"Adsorption of Organic Dyes on Non-conventional and Inexpensive Adsorbent","volume":4}

Check it yourself

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printf '%s' "$(curl -s https://scimatic.org/nft/articles/142.json | jq -r .canonical_record)" | sha256sum

2. The hash stored on chain (contentHash(142)):

curl -s https://rpc.scimatic.net -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_call","params":[{"to":"0x0E596B4bb924937aA35D9b342A90347ed6F05eF8","data":"0xf3e0c290000000000000000000000000000000000000000000000000000000000000008e"},"latest"]}'

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