How to use ethereumjs-wallet with web3

“Returned error: unknown account”
const account = web3.eth.accounts.privateKeyToAccount(privateKey);
const amountAdj = (amount * 10 ** contractDecimal).toFixed(0)
const recipientAddr = web3.utils.toChecksumAddress(payee)
const senderAddr = web3.utils.toChecksumAddress(sender)
const boolResult = await contract.methods.transfer(
.send({from: senderAddr, gas: 2000000})
privateKey: pk,
address: addr





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